Waterway conversion device

Abstract

The utility model discloses a waterway conversion device, which is used for connecting a control valve of water treatment equipment, a first water filtering device and a second water filtering device, and comprises a first waterway converter, a second waterway converter, a third waterway converter and a fourth waterway converter, the second water path converter is connected through a connecting pipe; the lower part of the second waterway converter is connected with a second water filtering device. The waterway conversion device disclosed by the utility model can be simultaneously suitable for double-tank water treatment equipment including a water purifier, a water softener and the like, and other pipeline switch configurations are not needed; according to the water softener applying the waterway conversion device, the equipment performance is improved while the equipment height space is saved, and the material and process cost can be saved. The waterway conversion device disclosed by the utility model is simple and convenient in process and strong in manufacturability, the production efficiency is effectively improved, and higher economic benefits are generated.

Description

Technical Field

[0001] The utility model relates to the field of water treatment, in particular to a water path conversion device for a water purifier or water softener of a water treatment device. Background Art

[0002] A water purifier, also known as a water purification machine or water quality purifier, is a water treatment device that deeply filters and purifies water quality according to the usage requirements of water. Generally, the water purifier mentioned usually refers to a small purifier for household use. Its technical core is to purify the water quality through a filter element device and filter out harmful substances in the water quality.

[0003] A water softener mainly removes calcium and magnesium ions in water through ion exchange resin to reduce the water quality hardness. There are obvious differences in taste and feel between softened water and tap water. A household water softening device applies ion exchange technology to exchange functional ions on the resin with calcium and magnesium ions in water, thereby adsorbing excess calcium and magnesium ions in water and achieving the purpose of removing water scale (calcium carbonate or magnesium carbonate).

[0004] With the development of technology, existing water purifiers / water softeners have gradually emerged to achieve sufficient supply of purified water / softened water, avoid the situation of insufficient supply of purified water / softened water, and improve the user experience.

[0005] Therefore, there is an urgent need for a device that can be applied to a water purifier / water softener with a dual filter tank system to achieve water path conversion between different filter tanks. Summary of the Utility Model

[0006] A series of simplified concepts are introduced in the summary of the utility model. These simplified concepts are all simplified from the prior art in this field and will be further described in detail in the specific implementation section. The summary of the utility model does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0007] The technical problem to be solved by the utility model is to provide a water path conversion device that can be used for a water purifier / water softener with a dual filter tank system to achieve water path conversion between different filter tanks.

[0008] To solve the above technical problem, the water path conversion device provided by the utility model is used to connect a control valve, a first water filtration device, and a second water filtration device of a water treatment device, and includes:

[0009] A first water path converter 3, the upper part of which is connected to the control valve of the water treatment device through a connecting nut 1 and a hoop assembly 2, the lower part of which is connected to the first water filtration device, and it is connected to a second water path converter 4 through a connecting pipe 6;

[0010] The second waterway converter 4, whose lower part is connected to the second water filtering device.

[0011] Preferably, further improve the waterway conversion device. The first waterway converter 3 includes:

[0012] A first central tube 3-1, which penetrates the waterway converter main body along the axis of the waterway converter main body. A first opening 3-2 is formed in its upper outer part, a second opening 3-3 is formed in its lower outer part, a first interface 3-4 is formed on the right side of its middle part, and a second interface 3-5 is formed on the left side of its middle part;

[0013] A first waterway converter first card slot 3-4-1 is formed at the first interface 3-4;

[0014] A first waterway converter second card slot 3-5-1 is formed at the second interface 3-5;

[0015] A first sealing surface 3-4-2 is formed at the first interface 3-4;

[0016] A second sealing surface 3-5-2 is formed at the second interface 3-5;

[0017] A first external thread 3-6 is arranged outside the second opening 3-3;

[0018] A first U-shaped groove 3-7 is arranged on the peripheral edge of the upper part of the external thread 3-6, and its opening is downward;

[0019] Wherein, the first opening 3-2 is communicated with the first interface 3-4, and the second opening 3-3 is communicated with the second interface 3-5.

[0020] Preferably, further improve the waterway conversion device. The second waterway converter 4 includes:

[0021] A second central tube 4-1, which extends downward along the axis of the waterway converter main body. A third opening 4-2 is formed on the outer side of its lower part, a third interface 4-3 is formed on its left side, and a fourth interface 4-4 is formed on its right side;

[0022] A third card slot 4-3-1 is formed at the third interface 4-3;

[0023] A fourth card slot 4-4-1 is formed at the fourth interface 4-4;

[0024] A second external thread 4-5 is formed on the outer side of the third opening 4-2;

[0025] A second U-shaped groove 4-6 is formed on the upper part of the second external thread 4-5, and its opening is downward.

[0026] Preferably, further improve the waterway conversion device. The connecting nut 1 has an internal thread 1-1 formed therein, a sealing plane 1-2 provided at its upper end, a plurality of first grooves 1-3 formed at the edge of the upper end, and a second groove 1-4 opened at the lower edge.

[0027] Preferably, further improve the waterway conversion device. The hoop assembly 2 includes: a left hoop 2-1, a right hoop 2-2, and a pin 2-3;

[0028] One end of the left hoop is provided with a first buckle 2-1-1, the other end forms a first clamping groove 2-1-2 of the hoop assembly, a first pin hole 2-1-3 is formed in the first clamping groove 2-1-2 of the hoop assembly, and a third U-shaped groove 2-1-4 is formed in the inner side wall of the left hoop;

[0029] One end of the right hoop is provided with a second buckle 2-2-1, the other end is provided with a second clamping groove 2-2-2 of the hoop assembly, a second pin hole 2-2-3 is formed on the second buckle 2-2-1, and a fourth U-shaped groove 2-2-4 is formed in the inner side wall of the right hoop;

[0030] Wherein, the first buckle 2-1-1 and the second clamping groove 2-2-2 of the hoop assembly cooperate to form a fixation, and the first clamping groove 2-1-2 of the hoop assembly and the second buckle 2-2-1 are fixed by a pin 2-3.

[0031] Preferably, further improve the waterway conversion device. The connecting pipe 6 is connected with connectors 5 at both ends. The connecting pipe 6 and the connectors 5 are fixed by hot melting connection and are respectively connected to the first waterway converter 3 and the second waterway converter 4;

[0032] The connector 5 includes: a central pipe 5-1 formed along its axis, at least one third groove 5-2 formed at one end of its outer ring, and a fourth groove 5-3 formed on the outer ring towards the middle of the axis at the position of the third groove 5-2;

[0033] The pins 7-1 of the four clamps 7 are respectively inserted into the grooves corresponding to and aligned with the fourth groove 5-3, the first clamping groove 3-4-1 of the first waterway converter, the second clamping groove 3-5-1 of the first waterway converter, the third clamping groove 4-3-1, and the fourth clamping groove 4-4-1;

[0034] The O-ring seals 8 are respectively arranged in the third grooves 5-2.

[0035] Preferably, further improve the waterway conversion device. The water treatment equipment applied includes a water purifier or a water softener.

[0036] The assembly process of the present utility model is as follows;

[0037] Put the corresponding O-ring seals onto the third groove 5-2 of the joint 5 respectively, cut a connecting pipe 6 of appropriate length, and connect the two ends of the connecting pipe 6 to the central pipe 5-1 of the joint 5 by hot melting;

[0038] Insert the two ends of the third groove 5-2 of the component assembled by the above joint 5, O-ring seal, and connecting pipe 6 into the first interface 3-4 on the right side of the water path converter 3 and the third interface 4-3 on the left side of the water path converter 4 respectively. Insert the two ends of the third groove 5-2 of the component assembled by the joint 5, O-ring seal, and connecting pipe 6 into the second interface 3-5 on the left side of the water path converter 3 and the fourth interface 4-4 on the right side of the water path converter 4 respectively. Align the fourth groove 5-3 of the joint 5 with the first slot 3-4-1 of the first water path converter, the second slot 3-5-1 of the first water path converter, the third slot 4-3-1, and the fourth slot 4-4-1 of the water path converter 4;

[0039] Insert the pins 7-1 of the four clamps 7 into the slots where the fourth groove 5-3 is aligned with the first slot 3-4-1 of the first water path converter, the second slot 3-5-1 of the first water path converter, the third slot 4-3-1, and the fourth slot 4-4-1 in sequence. The assembly of the joint 5, O-ring seal, and connecting pipe 6 is completed with the water path converters 3 and 4;

[0040] Put the corresponding seals 8 into the first U-shaped groove 3-7 of the water path converter 3 and the second U-shaped groove 4-6 of the water path converter 4 respectively. Put the corresponding seal 8 into the second groove 1-4 of the connecting nut 1. Sleeve the end of the second groove 1-4 of the connecting nut 1 with the seal 8 installed into the upper first opening 3-2 of the water path converter 3, so that the edge of the sealing surface 1-2 of the connecting nut 1 is flush with the outer edge of the upper opening 3-2 of the water path converter 3;

[0041] Align the first buckle 2-1-1, the first slot 2-1-2 of the clamp assembly, and the first pin hole 2-1-3 of the left clamp 2-1 with the second slot 2-2-2 of the clamp assembly, the second buckle 2-2-1, and the second pin hole 2-2-3 of the right clamp respectively. Place the third U-shaped groove 2-1-4 of the left clamp 2-1 and the fourth U-shaped groove 2-2-4 of the right clamp 2-2 opposite to each other, and sleeve them onto the edge of the sealing surface 1-2 of the flush connecting nut 1 and the outer edge of the upper opening 3-2 of the water path converter 3. Then insert the pin 2-3 into the aligned first pin hole 2-1-3 and second pin hole 2-2-3, and the water path conversion device is assembled. As Figure 7 Align the external thread interface of the corresponding control valve with the internal thread in the connecting nut 1 in the water path conversion device. Align the O-ring in the upper U-shaped groove of the external thread of the control valve with the sealing plane 1-2 on the connecting nut 1, and tighten the thread to complete the assembly of the control valve;

[0042] Insert the corresponding water distributor (central pipe) into the tank through the mouth of the softening resin tank (filter media tank). Select the appropriate filter media type and quantity according to needs and insert them into the tank through the mouth of the softening resin tank (filter media tank). Expose the mouth of the water distributor (central pipe). Align the mouths of the softening resin tank (filter media tank) containing the water distributor (central pipe) and filter media with the sealing rings in the first U-shaped grooves 3-7 and U-shaped groove 4-6 of the water path converters 3 and 4 respectively. Align the mouths of the water distributors (central pipes) exposed at the mouths of the softening resin tanks (filter media tanks) with the lower parts of the central pipes 3-1 and 4-1 of the water path converters 3 and 4 respectively. Tighten the softening resin tank (filter media tank). For the water purification machine device, after the above process, the assembly is completed, as Figure 11 shown;

[0043] For the water softener device, after the above process, it is also necessary to assemble the corresponding salt tank and salt valve at the salt suction interface of the control valve; as Figure 12 shown.

[0044] Correspondingly, the water treatment process flow of the water purification machine is service, backwashing, and flushing;

[0045] Correspondingly, the water treatment process flow of the water softener is service, salt suction, backwashing, flushing, and water replenishment.

[0046] The present utility model can at least achieve the following technical effects;

[0047] 1. The water path conversion device of the present utility model is connected to the control valve by a hoop clamping method, with a 360° adjustable position and fast and efficient connection;

[0048] 2. The water path conversion device of the present utility model is connected to the control valve by a hoop clamping method, without tool installation and maintenance, saving time and effort;

[0049] 3. The water path conversion device of the present utility model is connected to the control valve by a hoop clamping method, with a stable connection and effectively preventing water leakage;

[0050] 4. The water path conversion device of the present utility model can be simultaneously applied to double-tank water treatment equipment, including water purification machines, water softeners, etc. and others, without other pipeline switch configurations;

[0051] 5. The water softener applying the water path conversion device of the present utility model saves equipment height space while improving equipment performance;

[0052] 6. The water softener applying the water path conversion device of the present utility model saves materials and process costs;

[0053] 7. The water path conversion device of the present utility model has a simple process, strong manufacturability, effectively improves production efficiency, and generates high economic benefits. Description of the Drawings

[0054] The accompanying drawings of the present utility model are intended to show the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the present utility model, supplementing the descriptions in the specification. However, the accompanying drawings of the present utility model are schematic diagrams not drawn to scale, and thus may not be able to accurately reflect the precise structures or performance characteristics of any given embodiment. The accompanying drawings of the present utility model should not be construed as limiting or restricting the scope of the numerical values or properties covered by the exemplary embodiments according to the present utility model. The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0055] Figure 1 It is a schematic cross-sectional view of the overall structure of the present utility model.

[0056] Figure 2 It is a schematic structural view of the first waterway converter embodiment of the present utility model Figure 1 .

[0057] Figure 3 It is a schematic structural view of the first waterway converter embodiment of the present utility model Figure 2 .

[0058] Figure 4 It is a schematic structural view of the second waterway converter embodiment of the present utility model Figure 1 .

[0059] Figure 5 It is a schematic structural view of the second waterway converter embodiment of the present utility model Figure 2 .

[0060] Figure 6 It is a schematic structural view of the connection nut embodiment of the present utility model.

[0061] Figure 7 It is a schematic structural view of the hoop assembly embodiment of the present utility model Figure 1 .

[0062] Figure 8 It is a schematic structural view of the hoop assembly embodiment of the present utility model Figure 2 .

[0063] Figure 9 It is a schematic structural view of the joint embodiment of the present utility model.

[0064] Figure 10 It is a schematic structural view of the clamp of the present utility model.

[0065] Figure 11 It is a schematic structural view of the present utility model installed in a water purifier.

[0066] Figure 12 It is a schematic structural view of the present utility model installed in a water softener.

[0067] Description of the reference numerals

[0068] Connecting nut 1

[0069] Internal thread 1-1

[0070] Sealing plane 1-2

[0071] First groove 1-3

[0072] Second groove 1-4

[0073] Hoop assembly 2

[0074] Left hoop 2-1

[0075] First buckle 2-1-1

[0076] First card slot of the hoop assembly 2-1-2

[0077] First pin hole 2-1-3

[0078] Third U-shaped groove 2-1-4

[0079] Right hoop 2-2

[0080] Second buckle 2-2-1

[0081] Second card slot of the hoop assembly 2-2-2

[0082] Second pin hole 2-2-3

[0083] Fourth U-shaped groove 2-2-4

[0084] Pin 2-3

[0085] First water path converter 3

[0086] First central tube 3-1

[0087] First opening 3-2

[0088] Second opening 3-3

[0089] First interface 3-4

[0090] First card slot of the first water path converter 3-4-1

[0091] First sealing surface 3-4-2

[0092] Second interface 3-5;

[0093] Second card slot of the first water path converter 3-5-1

[0094] Second sealing surface 3-5-2

[0095] First external thread 3-6

[0096] The first U-shaped groove 3-7

[0097] The second water path converter 4

[0098] The second central pipe 4-1

[0099] The third opening 4-2

[0100] The third interface 4-3

[0101] The third card slot 4-3-1

[0102] The fourth interface 4-4

[0103] The fourth card slot 4-4-1

[0104] The second external thread 4-5

[0105] The second U-shaped groove 4-6

[0106] The connector 5

[0107] The central pipe 5-1

[0108] The third groove 5-2

[0109] The fourth groove 5-3

[0110] The connecting pipe 6

[0111] The clamp 7

[0112] The bolt 7-1

[0113] The O-ring 8

[0114] The water purifier control valve 9

[0115] The water purifier sewage outlet 10

[0116] The water purifier water outlet 11

[0117] The water purifier water inlet 12

[0118] The first water filtration device of the water purifier 13

[0119] The second water filtration device of the water purifier 14

[0120] The water softener sewage outlet 15

[0121] The water softener water outlet 16

[0122] The water softener water inlet 17

[0123] The first water filtration device of the water softener 18

[0124] The second water filtration device of the water softener 19

[0125] The water softener salt box 20. Detailed implementation manners

[0126] The following describes the implementation manners of the present utility model through specific embodiments. Those skilled in the art can fully understand other advantages and technical effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation manners. The details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without departing from the overall design concept of the utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present utility model can be implemented in many different forms and should not be construed as being limited only to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present utility model complete and thorough, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art. It should be understood that when an element is referred to as being "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or there can be an intermediate element. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference numerals always represent the same elements.

[0127] The first embodiment;

[0128] Referring to Figure 1 as shown, the present utility model provides a water path conversion device, which is used to connect a control valve, a first water filtration device and a second water filtration device of a water treatment device. The water treatment device includes a water purifier or a water softener, and includes:

[0129] A first water path converter 3, the upper part of which is connected to the control valve of the water treatment device through a connection nut 1 and a hoop assembly 2, the lower part of which is connected to the first water filtration device, and which is connected to a second water path converter 4 through a connecting pipe 6;

[0130] A second water path converter 4, the lower part of which is connected to the second water filtration device.

[0131] In addition, it should also be understood that although the terms "first", "second", etc. can be used here to describe different elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the exemplary embodiments of the present utility model, the first element, component, region, layer or part discussed below can also be referred to as the second element, component, region, layer or part.

[0132] The second embodiment;

[0133] Reference Figure 2 Combined with Figure 3 As shown, the present utility model provides a first water path converter 3 that can be used in the above-mentioned first embodiment, which includes:

[0134] A first central tube 3-1, which penetrates through the main body of the water path converter along the axis of the water path converter main body, has a first opening 3-2 formed at its upper outer part, a second opening 3-3 formed at its lower outer part, a first interface 3-4 formed at the right side of its middle part, and a second interface 3-5 formed at the left side of its middle part;

[0135] A first card slot 3-4-1 of the first water path converter is formed at the first interface 3-4;

[0136] A second card slot 3-5-1 of the first water path converter is formed at the second interface 3-5;

[0137] A first sealing surface 3-4-2 is formed at the first interface 3-4;

[0138] A second sealing surface 3-5-2 is formed at the second interface 3-5;

[0139] A first external thread 3-6 is provided outside the second opening 3-3;

[0140] A first U-shaped groove 3-7 is provided on the peripheral edge of the upper part of the external thread 3-6, and its opening is downward;

[0141] Among them, the first opening 3-2 is communicated with the first interface 3-4, and the second opening 3-3 is communicated with the second interface 3-5.

[0142] Third embodiment;

[0143] Reference Figure 4 Combined with Figure 5 As shown, the present utility model provides a second water path converter 4 that can be used in the above-mentioned first embodiment, including:

[0144] A second central tube 4-1, which extends downward along the axis of the water path converter main body, has a third opening 4-2 formed at its lower outer part, a third interface 4-3 formed at its left side, and a fourth interface 4-4 formed at its right side;

[0145] A third card slot 4-3-1 is formed at the third interface 4-3;

[0146] A fourth card slot 4-4-1 is formed at the fourth interface 4-4;

[0147] A second external thread 4-5 is formed outside the third opening 4-2;

[0148] A second U-shaped groove 4-6 is formed at the upper part of the second external thread 4-5, and its opening is downward.

[0149] Fourth Embodiment;

[0150] Reference Figure 6 As shown, the present utility model provides a connecting nut 1 that can be used in the above-mentioned first to third embodiments. An internal thread 1-1 is formed inside it, a sealing plane 1-2 is provided at its upper end, a plurality of first grooves 1-3 are formed at the edge of the upper end, and a second groove 1-4 is opened at the lower edge.

[0151] Fifth Embodiment;

[0152] Reference Figure 7 and Figure 8 As shown, the present utility model provides a hoop assembly 2 that can be used in the above-mentioned first to third embodiments, including: a left hoop 2-1, a right hoop 2-2, and a pin 2-3;

[0153] One end of the left hoop is provided with a first buckle 2-1-1, the other end forms a first card slot 2-1-2 of the hoop assembly, a first pin hole 2-1-3 is formed in the first card slot 2-1-2 of the hoop assembly, and a third U-shaped groove 2-1-4 is formed in the inner side wall of the left hoop;

[0154] One end of the right hoop is provided with a second buckle 2-2-1, the other end is provided with a second card slot 2-2-2 of the hoop assembly, a second pin hole 2-2-3 is formed on the second buckle 2-2-1, and a fourth U-shaped groove 2-2-4 is formed in the inner side wall of the right hoop;

[0155] Among them, the first buckle 2-1-1 and the second card slot 2-2-2 of the hoop assembly cooperate to form a fixed assembly, and the first card slot 2-1-2 of the hoop assembly and the second buckle 2-2-1 form a fixed assembly through the pin 2-3.

[0156] Sixth Embodiment;

[0157] The present utility model provides a connecting pipe 6 that can be used in the above-mentioned first to third embodiments. Both ends of the connecting pipe 6 are connected with connectors 5, and are respectively connected to the connecting pipe 6 of the first water path converter 3 and the second water path converter 4;

[0158] Reference Figure 9 As shown, the connector 5 includes: a central pipe 5-1 formed along its axis, at least one third groove 5-2 is formed at one end of its outer circle, and a fourth groove 5-3 is formed on the outer circle towards the middle of the axis at the position of the third groove 5-2;

[0159] Reference Figure 10As shown, the clamp 7 has a bolt 7-1, and the bolts 7-1 of the four clamps 7 are respectively inserted into the slots where the fourth groove 5-3 is aligned with the first card slot 3-4-1, the second card slot 3-5-1, the third card slot 4-3-1 and the fourth card slot 4-4-1 of the first water path converter;

[0160] The O-ring seals 8 are respectively arranged in the third grooves 5-2.

[0161] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will also be understood that terms such as those defined in a general dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not in an idealized or overly formal sense, unless expressly defined herein.

[0162] The above has described the present utility model in detail through specific embodiments and examples, but these do not constitute a limitation to the present utility model. Without departing from the principle of the present utility model, those skilled in the art can also make many deformations and improvements, which should also be regarded as the protection scope of the present utility model.

Claims

1. A waterway conversion device, which is used to connect a control valve, a first water filter device and a second water filter device of a water treatment equipment, characterized in that: include: A first water circuit converter (3), the upper part of which is connected to a control valve of a water treatment device via a connecting nut (1) and a clamp assembly (2), the lower part of which is connected to a first water filter device, and the lower part of which is connected to a second water circuit converter (4) via a connecting pipe (6); The second water path converter (4) has a lower portion connected to a second water filtering device.

2. The waterway conversion device according to claim 1, characterized in that: The first water circuit converter (3) comprises: A first central tube (3-1) passes through the water circuit converter body along the axis of the water circuit converter body, a first opening (3-2) is formed on the outer upper portion thereof, a second opening (3-3) is formed on the outer lower portion thereof, a first interface (3-4) is formed on the right side of the middle portion thereof, and a second interface (3-5) is formed on the left side of the middle portion thereof; A first card slot (3-4-1) of the first water channel converter is formed at the first interface (3-4); A second card slot (3-5-1) of the first water channel converter is formed at the second interface (3-5); A first sealing surface (3-4-2) is formed at the first interface (3-4); A second sealing surface (3-5-2) is formed at the second interface (3-5); The second opening (3-3) is provided with a first external thread (3-6) on the outside; A first U-shaped groove (3-7) is arranged on the upper periphery of the external thread (3-6), and its opening is downward; The first opening (3-2) is in communication with the first interface (3-4), and the second opening (3-3) is in communication with the second interface (3-5).

3. The waterway conversion device according to claim 1, characterized in that: The second water circuit converter (4) comprises: A second central tube (4-1) is downwardly directed along the axis of the water circuit converter body, a third opening (4-2) is formed on the outer side of the lower portion, a third interface (4-3) is formed on the left side, and a fourth interface (4-4) is formed on the right side; A third card slot (4-3-1) is formed at the third interface (4-3); A fourth card slot (4-4-1) is formed at the fourth interface (4-4); A second external thread (4-5) formed outside the third opening (4-2); The second U-shaped groove (4-6) is formed on the upper part of the second external thread (4-5) and its opening faces downward.

4. The waterway conversion device according to claim 1, characterized in that: The connecting nut (1) has an internal thread (1-1) formed therein, a sealing plane (1-2) is arranged at the upper end thereof, a plurality of first grooves (1-3) are formed at the edge of the upper end, and a second groove (1-4) is provided at the lower end.

5. The waterway conversion device according to claim 1, characterized in that: The clamp assembly (2) comprises: a left clamp (2-1), a right clamp (2-2) and a bayonet (2-3); A first buckle (2-1-1) is provided at one end of the left clamping hoop, a first clamping groove (2-1-2) of the clamping hoop assembly is formed at the other end, a first bayonet hole (2-1-3) is formed in the first clamping groove (2-1-2) of the clamping hoop assembly, and a third U-shaped groove (2-1-4) is formed on the inner side wall of the left clamping hoop; A second buckle (2-2-1) is provided at one end of the right clamp, and a second clamping groove (2-2-2) of the clamp assembly is provided at the other end; a second bayonet hole (2-2-3) is formed on the second buckle (2-2-1); and a fourth U-shaped groove (2-2-4) is formed on the inner side wall of the right clamp; The first buckle (2-1-1) and the second clamping groove (2-2-2) of the clamp assembly cooperate to form a fixed assembly, and the first clamping groove (2-1-2) of the clamp assembly and the second buckle (2-2-1) form a fixed assembly through a bayonet (2-3).

6. The waterway conversion device according to claim 1, characterized in that: Both ends of the connecting pipe (6) are connected with joints (5), which are respectively connected to the first water path converter (3) and the second water path converter (4); The joint (5) comprises: a central pipe (5-1) formed along its axis, at least one third groove (5-2) formed at one end of its outer ring, and a fourth groove (5-3) formed at the position of the third groove (5-2) toward the middle of the axis on the outer ring; The latch pins (7-1) of the four clamps (7) are respectively inserted into the fourth groove (5-3) and the correspondingly aligned grooves of the first clamping groove (3-4-1) of the first waterway converter, the second clamping groove (3-5-1) of the first waterway converter, the third clamping groove (4-3-1) and the fourth clamping groove (4-4-1); O-type sealing rings (8) are respectively arranged in the third grooves (5-2).

7. The waterway conversion device according to any one of claims 1 to 6, characterized in that: The water treatment equipment used includes water purifiers or water softeners.

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