Pipeline assembly of water tank, and water tank

Abstract

The present application discloses a pipeline assembly of a water tank, and a water tank. A flow channel communicated with an inner cavity of the water tank is formed in a water tank connector; the inner wall of one end of the flow channel comprises an enameled area and an unenameled area which are distributed in an axial direction; an end of a connecting connector extends into the water tank connector and is threadedly connected to at least part of the unenameled area; and an anti-rust member separately abuts against the connecting connector and the inner wall of the flow channel to separate the inner cavity from at least part of the unenameled area.

Description

Water tank piping components and water tank

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202322226863.8, application date August 17, 2023, and name “Pipeline assembly and water tank for water tank”, and claims the priority of the above Chinese patent application. The entire content of the above Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the technical field of water tanks, and in particular to a water tank pipeline assembly and a water tank. Background Art

[0004] In the related art, the pipe assembly of the water tank includes a water tank joint and a connecting joint. After the water tank joint is enameled, there are some un-enamelled areas. After the water tank joint and the connecting joint are connected, the steel in the un-enamelled area is exposed to the air. After the water tank is flushed, the un-enamelled area will rust and corrode during long-term operation, which reduces the service life of the pipe assembly and may even produce rusty water, affecting the normal use of the water tank.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a pipe assembly for a water tank that can reduce the contact between the unenamelled area and water, thereby reducing the problem of rust and corrosion in the unenamelled area.

[0007] According to the pipe assembly of the water tank according to the embodiment of the present application, it includes: a water tank joint, a flow channel connected to the inner cavity of the water tank is formed in the water tank joint, the inner wall of one end of the flow channel includes an enameled area and an un-enamelled area distributed along the axial direction, and the un-enamelled area is located at the end of the enameled area away from the inner cavity; a connecting joint, the end of the connecting joint extends into the water tank joint and is threadedly connected to at least a portion of the un-enamelled area; and a rust-proof part, the rust-proof part respectively abuts against the connecting joint and the inner wall of the flow channel to separate the inner cavity and at least a portion of the un-enamelled area.

[0008] According to the pipe assembly of the water tank in the embodiment of the present application, rust-proof parts are provided to separate at least part of the inner cavity and the unenamelled area, thereby reducing the water flowing into the unenamelled area. In this way, the contact between the unenamelled area and water can be reduced to reduce the problem of rust and corrosion in the unenamelled area. In this way, the service life of the pipe assembly can be improved, and the generation of rust can be reduced, thereby ensuring the normal use of the water tank.

[0009] According to the pipe assembly of the water tank in some embodiments of the present application, the rust-proof part is interference fit with the inner wall of the flow channel.

[0010] According to the pipe assembly of the water tank in some embodiments of the present application, the rust-proof part is constructed as an annular part, the rust-proof part is slidably fitted with the inner wall of the flow channel, and the outer peripheral wall of the rust-proof part is suitable for abutting against at least part of the un-enamelled area.

[0011] According to the pipe assembly of the water tank in some embodiments of the present application, the rust-proof part abuts against the connecting joint, and an escape space is formed in the rust-proof part, and the escape space is used to connect the flow channel and the connecting joint.

[0012] According to the pipe assembly of the water tank in some embodiments of the present application, the outer peripheral wall of the rust-proof part is provided with a plurality of annular protrusions, and the annular protrusions are against at least a portion of the un-enamelled area.

[0013] According to the pipe assembly of the water tank in some embodiments of the present application, the rust-proof part is constructed as a sealing ring, which is sleeved on the connecting joint and abuts against at least a portion of the un-enamelled area.

[0014] According to the pipe assembly of the water tank in some embodiments of the present application, the inner wall of the flow channel is provided with an internal thread for cooperating with the thread of the connecting joint, and an avoidance slope is provided at the connection between the internal thread and the unenamelled area.

[0015] According to the pipe assembly of the water tank in some embodiments of the present application, in the axial direction of the flow passage, the radial dimension of the flow passage at the avoidance slope gradually increases.

[0016] According to the pipe assembly of the water tank in some embodiments of the present application, the maximum radial dimension of the rust-proof part is smaller than the minimum radial dimension of the flow passage at the internal thread.

[0017] The application also proposes a water tank.

[0018] A water tank according to an embodiment of the present application includes: the pipe assembly of the water tank described in any one of the above embodiments.

[0019] The advantages of the water tank and the pipe assembly of the water tank described above over the prior art are the same and will not be repeated here.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] FIG1 is a schematic diagram of the exploded structure of a pipe assembly of a water tank according to some embodiments of the present application;

[0023] FIG2 is a schematic diagram of the anti-rust ring shown in FIG1 ;

[0024] FIG3 is a schematic diagram of a pipe assembly of a water tank according to other embodiments of the present application;

[0025] FIG4 is a cross-sectional view of the AA portion of FIG3 ;

[0026] FIG5 is a schematic diagram of the connection joint in FIG3 ;

[0027] FIG6 is an enlarged view of point B in FIG4 ;

[0028] FIG7 is a cross-sectional view of CC in FIG5;

[0029] FIG8 is an enlarged view of point D in FIG7 .

[0030] Reference numerals:

[0031] Water tank 1000;

[0032] Pipeline assembly 100;

[0033] Water tank connector 10, TP valve connector 10a, flow passage 11;

[0034] Enameled area 111, unenamelled area 112, internal thread 113, avoidance slope 114;

[0035] Connecting joint 20, TP valve 20a, water pipe adapter 20b, external thread 21, annular groove 22, inclined protrusion 23;

[0036] Anti-rust part 30, anti-rust ring 30a, sealing ring 30b, avoidance space 31, annular protrusion 32. DETAILED DESCRIPTION

[0037] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0038] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0039] The following describes a pipe assembly 100 of a water tank according to an embodiment of the present application with reference to FIG1 to FIG8 .

[0040] As shown in FIG. 1 and FIG. 3 , a water tank pipe assembly 100 according to an embodiment of the present application includes: a water tank joint 10 , a connecting joint 20 and an anti-rust part 30 .

[0041] As shown in Figure 3, a flow channel 11 communicating with the inner cavity of the water tank is formed in the water tank joint 10. The inner wall of one end of the flow channel 11 includes an enameled area 111 and an unenamelled area 112 distributed along the axial direction X. The unenamelled area 112 is located at the end of the enameled area 111 away from the inner cavity. The end of the connecting joint 20 extends into the water tank joint 10 and is threadedly connected to at least a portion of the unenamelled area 112. The rust-proof part 30 respectively abuts against the inner walls of the connecting joint 20 and the flow channel 11 to separate the inner cavity from at least a portion of the unenamelled area 112.

[0042] In this way, the contact between the unenamelled area 112 and water can be reduced, thereby reducing the problem of rust and corrosion in the unenamelled area 112. In this way, the service life of the pipeline assembly 100 can be improved, and the generation of rust can be reduced, thereby ensuring the normal use of the water tank.

[0043] For example, as shown in FIG. 1 and FIG. 3 , the pipe assembly 100 includes a water tank joint 10 , a connecting joint 20 and a rust-proof member 30 .

[0044] The water tank joint 10 is installed on the water tank. An overflow channel 11 is formed in the water tank joint 10. The overflow channel 11 is connected to the inner cavity of the water tank. For example, the water tank joint 10 can be an inlet joint or an outlet joint. External water can enter the water tank through the inlet joint, or water in the water tank can flow out through the outlet joint. In this way, water inflow or outflow of the water tank can be achieved.

[0045] Among them, the inner wall of one end of the flow channel 11 includes an enameled area 111 and an unenamelled area 112 distributed along the axial direction X, and the unenamelled area 112 is located at the end of the enameled area 111 away from the inner cavity. Among them, as shown in Figure 1, "axial direction X" refers to the axial direction X of the water tank joint 10, that is, the flow direction of water in the flow channel 11.

[0046] In some embodiments, the connection joint 20 may be a water pipe adapter 20 b or a water pipe adapter valve. The end of the connection joint 20 extends into the water tank joint 10 and is threadedly connected to the un-enamelled area 112 .

[0047] For example, as shown in Figure 3, at least part of the unenamel area 112 is provided with an internal thread 113, and the end of the connecting joint 20 extending into the water tank joint 10 is provided with an external thread 21. The end of the connecting joint 20 extends into the water tank joint 10 so that the internal thread 113 and the external thread 21 are threadedly matched to achieve communication between the water tank joint 10 and the connecting joint 20. In this way, it is convenient to achieve communication between the water tank joint 10 and the external waterway through the water pipe adapter 20b to reduce the difficulty of communication, or to achieve on-off control of the water tank joint 10 and the external pipeline through the water pipe adapter valve.

[0048] In some other embodiments, the water tank connector 10 can also be constructed as a TP valve connector 10a, and the connecting connector 20 can be constructed as a TP valve 20a adapted to the TP valve connector 10a. The setting method is the same as described above and will not be repeated here.

[0049] It should be noted that, in the related art, in order to ensure the stable assembly of the water tank joint 10 and the connecting joint 20, the axial X length of the internal thread 113 is usually greater than the axial X length of the external thread 21, and the water tank joint 10 is usually an enameled joint, that is, enamel powder is provided on the steel surface of the water tank joint 10 to form an enameled area 111 (such as the area shown in Figure 3) to protect the internal steel. However, due to the setting of the internal thread 113, the internal thread 113 and the surrounding area cannot be covered with enamel powder, that is, the area is formed into an unenamelled area 112 (such as the area shown in Figure 3).

[0050] Thus, during actual assembly, when the end of the connecting joint 20 extends into the water tank joint 10 and is threadedly connected to at least a portion of the unenamelled area 112, part of the unenamelled area 112 may not be completely covered due to improper assembly or excessive axial X length of the internal thread 113. As a result, when liquid, such as water, flows in the flow channel 11, the water will flow through the surface of the unenamelled area 112. This will cause the water to directly contact the steel of the water tank joint 10, thereby causing rust and corrosion problems, leading to its damage, reducing the service life of the pipe assembly 100, and even generating rusty water, affecting the normal use of the water tank.

[0051] In the present application, a rust-proof member 30 is provided, which abuts against the connecting joint 20 and the water tank joint 10 respectively to separate the inner cavity from the unenamelled area 112. In this way, when water flows in the flow channel 11, the rust-proof member 30 can block part of the water from flowing into the unenamelled area 112, that is, the water can only come into contact with the enameled area 111, but almost cannot come into contact with the unenamelled area 112, thereby reducing the problem of rust and corrosion in the unenamelled area 112. In this way, the service life of the pipe assembly 100 can be improved, and the generation of rust can be reduced, thereby ensuring the normal use of the water tank.

[0052] It should be noted that "the rust-proof part 30 respectively abuts against the inner walls of the connecting joint 20 and the overflow channel 11 to separate the inner cavity and at least part of the unenamelled area 112" includes the rust-proof part 30 abutting against the enameled area 111, so that the water in the overflow channel 11 cannot flow to the unenamelled area 112, thereby preventing the unenamelled area 112 from contacting with water, thereby avoiding the problem of rust and corrosion in the unenamelled area 112.

[0053] Alternatively, the rust-proof part 30 is against the un-enamelled area 112 . In this case, a small amount of water may contact the un-enamelled area 112 , but the amount is within the allowable error range.

[0054] Alternatively, the rust-proof member 30 abuts against both the enameled area 111 and the unenamelled area 112. In this way, water in the flow channel 11 cannot flow into the unenamelled area 112, thereby preventing the unenamelled area 112 from contacting water and thus preventing rust and corrosion in the unenamelled area 112.

[0055] According to the pipe assembly 100 of the water tank in the embodiment of the present application, a rust-proof part 30 is provided to separate the enameled area 111 and the unenamelled area 112, so that water in the flow channel 11 cannot flow to the unenamelled area 112. In this way, the contact between the unenamelled area 112 and water can be reduced, so as to reduce the problem of rust and corrosion in the unenamelled area 112. In this way, the service life of the pipe assembly 100 can be improved, and the generation of rust can be reduced, thereby ensuring the normal use of the water tank.

[0056] In some embodiments, the rust-proof member 30 is interference-fitted with the inner wall of the flow channel 11 .

[0057] Therefore, by setting an interference fit between the rust-proof part 30 and the inner wall of the flow channel 11, the rust-proof part 30 and the inner wall of the flow channel 11 are more tightly fitted, so that the rust-proof part 30 can better separate the enameled area 111 and the un-enamelled area 112 to prevent water from flowing through the enameled area 111 to the un-enamelled area 112, thereby enhancing the rust-proof effect of the rust-proof part 30 on the pipeline assembly 100.

[0058] 1 and 2 , the rust preventer 30 is configured as an annular member 30 a , which slides with the inner wall of the flow channel 11 , and the outer peripheral wall of the rust preventer 30 is adapted to abut against at least a portion of the unenamelled area 112 .

[0059] Therefore, by constructing the rust-proof part 30 as a ring-shaped part 30a, the rust-proof part 30 can be directly slidably assembled in the flow channel 11 during actual assembly, thereby reducing the difficulty of setting the rust-proof part 30 and facilitating the flexible selection of the rust-proof part 30 according to actual assembly requirements. At the same time, the setting of the rust-proof part 30 will not affect the original water tank joint 10 and the connecting joint 20, which is conducive to reducing production costs.

[0060] At the same time, the outer peripheral wall of the rust-proof part 30 offsets at least part of the unenamelled area 112. In this way, in the radial direction Y of the flow channel 11, the rust-proof part 30 can shield at least part of the unenamelled area 112, thereby realizing the spacing setting of at least part of the enameled area 111 and the unenamelled area 112, so as to reduce the problem of rust and corrosion in the unenamelled area 112, thereby improving the service life of the pipeline assembly 100 and reducing the generation of rust, thereby ensuring the normal use of the water tank.

[0061] For example, during actual assembly, one end of the rust-proof part 30 can be first extended into the flow channel 11, and the assembly direction is parallel to the axial direction X of the water tank joint 10. Then, when one end of the connecting joint 20 is extended into the flow channel 11 by threaded connection, the connecting joint 20 will gradually push the rust-proof part 30 to slide along the axial direction X of the flow channel 11. Since the outer peripheral wall of the rust-proof part 30 and the inner wall of the flow channel 11 have an interference fit, the rust-proof part 30 cannot slide relative to the inner wall of the flow channel 11 without external force, thereby avoiding the problem of over-assembly of the rust-proof part 30 during assembly (the rust-proof part 30 slides to the enameled area 111 and cannot completely cover the un-enamelled area 112). After the connecting joint 20 is assembled in place, one end of the axial direction X of the rust-proof part 30 (the end away from the inner cavity of the water tank) abuts against the connecting joint 20, and the outer peripheral wall of the rust-proof part 30 abuts against the un-enamelled area 112.

[0062] As a result, the assembly of the rust-proof member 30 can be coordinated with the assembly of the connecting joint 20 and the water tank joint 10, thereby simplifying the assembly steps of the rust-proof member 30 and reducing the difficulty of assembly.

[0063] In some embodiments, one axial X end of the rust-proof part 30 (the end away from the inner cavity of the water tank) is against the connecting joint 20, and as shown in Figure 2, an avoidance space 31 is formed in the rust-proof part 30, and the avoidance space 31 is used to connect the flow channel 11 and the connecting joint 20.

[0064] Therefore, by providing the avoidance space 31 , the portion of the flow passage 11 corresponding to the enamel area 111 can be connected to the connecting joint 20 , thereby ensuring that water can flow normally and avoiding blockage of the flow passage 11 .

[0065] In some embodiments, as shown in FIG. 2 , a plurality of annular protrusions 32 are provided on the outer peripheral wall of the rust preventer 30 , and the annular protrusions 32 abut against at least a portion of the un-enamelled area 112 .

[0066] Therefore, by providing a plurality of annular protrusions 32 on the outer peripheral wall of the rust preventer 30, and the plurality of annular protrusions 32 can be spaced apart and distributed along the axial direction X of the rust preventer 30 (the extension direction of the flow channel 11, that is, the axial direction X of the water tank joint 10), wherein the annular protrusion 32 closest to the inner cavity of the water tank among the plurality of annular protrusions 32 can be abutted against the connection between the enameled area 111 and the unenamelled area 112. In this way, the plurality of annular protrusions 32 can sequentially separate the enameled area 111 and the unenamelled area 112 in the axial direction X of the water tank joint 10 to enhance the rust prevention effect.

[0067] In some other embodiments, as shown in FIG2 , the outer peripheral wall of the rust preventer 30 is provided with a plurality of annular protrusions 32 , and the plurality of annular protrusions 32 can be distributed at intervals along the axial direction X of the rust preventer 30 (the extension direction of the flow channel 11 , i.e., the axial direction X of the water tank joint 10 ), wherein the annular protrusion 32 closest to the inner cavity of the water tank among the plurality of annular protrusions 32 can be abutted against the enameled area 111 to separate the enameled area 111 from the un-enamelled area 112 , and can also achieve the same effect as the above embodiment, which will not be repeated here.

[0068] In some embodiments, as shown in FIG. 4 , the rust-proof member 30 is configured as a sealing ring 30 b , which is sleeved on the connection joint 20 and abuts against at least a portion of the un-enamelled area 112 .

[0069] It can be understood that the radial Y inner ring portion of the sealing ring 30b abuts against the connecting joint 20, and the radial Y outer ring portion of the sealing ring 30b abuts against the inner wall of the flow channel 11 (the connection between the enameled area 111 and the unenamelled area 112).

[0070] Therefore, by constructing the rust-proof part 30 as a sealing ring 30b, and the sealing ring 30b is sleeved on the connecting joint 20 and abuts against the connection between the enameled area 111 and the unenamelled area 112, on the one hand, it can play a role in separating the enameled area 111 and the unenamelled area 112 to reduce rusting of the unenamelled area 112, and on the other hand, it can enhance the connection sealing between the water tank joint 10 and the connecting joint 20.

[0071] For example, as shown in Figures 5, 7 and 8, an annular groove 22 can be provided on the outer peripheral wall of the connecting joint 20, and the sealing ring 30b is sleeved in the annular groove 22, and a portion of the sealing ring 30b extends from the sealing groove and abuts against the inner wall of the flow channel 11. In this way, the connection stability between the sealing ring 30b and the connecting joint 20 can be enhanced to prevent the sealing ring 30b from falling off the connecting joint 20.

[0072] The sealing ring 30b may be made of rubber, plastic, or other materials, which are not limited here.

[0073] In some embodiments, as shown in FIG. 4 and FIG. 6 , the inner wall of the flow channel 11 is provided with an internal thread 113 for threaded engagement with the connecting joint 20 , and an avoidance slope 114 is provided at the connection between the internal thread 113 and the unenamelled area 112 .

[0074] Therefore, by providing the avoidance slope 114 to avoid the sealing ring 30b, the difficulty of assembling the sealing ring 30b is reduced.

[0075] For example, during actual assembly, the sealing ring 30b can be first put on the connecting joint 20, and then the connecting joint 20 and the water tank joint 10 can be assembled. It should be noted that the radial dimension of the part of the inner wall of the flow channel 11 where the internal thread 113 is provided is larger than the radial dimension of the enamel area 111, thereby avoiding interference between the internal thread 113 and the sealing ring 30b during actual assembly.

[0076] The avoidance slope 114 is provided. For example, the avoidance slope 114 can extend obliquely relative to the axial direction X of the water tank joint 10. In this way, when the sealing ring 30b contacts the avoidance slope 114, the avoidance slope 114 can play a certain guiding role for the sealing ring 30b. When the sealing ring 30b contacts the avoidance slope 114, the extrusion force of the sealing ring 30b on the avoidance slope 114 is perpendicular to the avoidance slope 114. The avoidance slope 114 can extend obliquely relative to the axial direction X of the water tank joint 10. In this way, the extrusion force of the sealing ring 30b on the avoidance slope 114 is not perpendicular to the axial direction X of the water tank joint 10. This makes it easier to assemble the sealing ring 30b.

[0077] In some embodiments, as shown in FIG. 4 and FIG. 6 , in the axial direction of the flow passage 11 , the radial dimension of the flow passage 11 at the avoidance slope 114 gradually increases.

[0078] As a result, the radial dimension of the flow channel 11 at the end where the avoidance slope 114 is away from the unenamel area 112 is larger, while the radial dimension of the flow channel 11 at the end where the avoidance slope 114 is close to the unenamel area 112 is smaller. In this way, the avoidance slope 114 can better avoid the sealing ring 30b, and at the same time, it can guide the sealing ring 30b to reduce the difficulty of assembling the sealing ring 30b.

[0079] In some embodiments, as shown in FIG. 5 , an end of the external thread 21 close to the inner cavity of the water tank is provided with an inclined protrusion 23 , which extends obliquely along the axial direction X of the water tank connector 10 relative to the radial direction Y of the water tank connector 10 .

[0080] Among them, the inclined protrusion 23 can be annular, and as shown in Figure 7, on the radial Y section of the water tank, the angle between the inclined surfaces of the inclined protrusion 23 on the side close to the inner cavity of the water tank is 90 degrees. Of course, it can also be other angles, which is not limited here.

[0081] Therefore, by providing the inclined protrusion 23, when the end of the connecting joint 20 extends into the water tank joint 10, the outermost end of the connecting joint 20 is prevented from interfering with the internal thread 113 of the water tank joint 10, so as to reduce the difficulty of assembly.

[0082] In some embodiments, as shown in FIG. 4 , the maximum radial dimension of the rust preventer 30 is smaller than the minimum radial dimension of the flow passage 11 at the internal thread 113 .

[0083] Therefore, by setting the maximum radial dimension of the rust preventer 30 to be smaller than the minimum radial dimension of the flow channel 11 at the internal thread 113 , it is possible to avoid interference between the internal thread 113 and the rust preventer 30 and scratching the rust preventer 30 .

[0084] The application also proposes a water tank.

[0085] The water tank according to an embodiment of the present application includes: the pipe assembly 100 of the water tank according to any one of the above embodiments.

[0086] It should be noted that the water tank described in any of the above embodiments may be an enamel water tank or other water tanks, which is not limited here.

[0087] According to the water tank of the embodiment of the present application, its pipe assembly 100 is provided with a rust-proof part 30 to separate the enameled area 111 and the unenamelled area 112, so that the water in the flow channel 11 cannot flow to the unenamelled area 112. In this way, the unenamelled area 112 can be prevented from contacting with water to avoid the problem of rust and corrosion in the unenamelled area 112. In this way, the service life of the pipe assembly 100 can be improved, and the generation of rust can be avoided, thereby ensuring the normal use of the water tank.

[0088] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0090] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0091] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0093] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pipe assembly for a water tank, wherein: include: A water tank joint, wherein a flow passage communicating with the inner cavity of the water tank is formed in the water tank joint, wherein an inner wall at one end of the flow passage comprises an enameled area and an un-enamelled area distributed along the axial direction, wherein the un-enamelled area is located at an end of the enameled area away from the inner cavity; a connecting joint, an end of which extends into the water tank joint and is threadedly connected to at least a portion of the unenamelled area; The rust-proof part is respectively against the inner wall of the connecting joint and the flow passage to separate the inner cavity from at least part of the un-enamelled area.

2. The water tank pipe assembly according to claim 1, wherein: The rust-proof part is interference-fitted with the inner wall of the flow passage.

3. The water tank pipe assembly according to claim 1 or 2, wherein: The rust-proof member is configured as an annular member, the rust-proof member is slidably matched with the inner wall of the flow passage, and the outer peripheral wall of the rust-proof member is adapted to abut against at least a portion of the un-enamelled area.

4. The water tank pipe assembly according to claim 3, wherein: The rust-proof part abuts against the connecting joint, and an escape space is formed in the rust-proof part, and the escape space is used to connect the flow passage and the connecting joint.

5. The water tank pipe assembly according to claim 3 or 4, wherein: The outer peripheral wall of the rust-proof part is provided with a plurality of annular protrusions, and the annular protrusions abut against at least a part of the un-enamelled area.

6. The water tank pipe assembly according to claim 1, wherein: The rust-proof part is configured as a sealing ring, which is sleeved on the connecting joint and abuts against at least a portion of the un-enamelled area.

7. The pipe assembly of a water tank according to any one of claims 1 to 5, wherein: The inner wall of the flow passage is provided with an internal thread for cooperating with the thread of the connecting joint, and an avoidance slope is provided at the connection between the internal thread and the un-enamelled area.

8. The water tank pipe assembly according to claim 7, wherein: In the axial direction of the flow passage, the radial dimension of the flow passage at the avoidance slope gradually increases.

9. The water tank pipe assembly according to claim 7 or 8, wherein: The maximum radial dimension of the rust-proof part is smaller than the minimum radial dimension of the flow passage at the internal thread.

10. A water tank, wherein: include: A pipe assembly for a water tank according to any one of claims 1 to 9.

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