Insertion pipe joint and water tank applying same

Abstract

The invention discloses a cannula connector and a water tank with the cannula connector, the cannula connector comprises a main body, the main body is provided with a flow channel, a pipe cavity and an inserting part, the pipe cavity is communicated with the flow channel, and the pipe cavity penetrates through the inserting part; a groove is formed in the outer wall of the connecting pipe in the circumferential direction, and the connecting pipe can be inserted into the pipe cavity and communicate with the flow channel. The two locking pieces can be installed in the inserting part in a relative sliding mode, each locking piece is provided with a clamping part, a sleeving space which can be expanded or shrunk along with relative movement of the two locking pieces is defined between the two clamping parts, and the sleeving space is located on the inserting path of the connecting pipe relative to the pipe cavity; the sleeving space is configured in a manner that the clamping part is clamped in the groove when the sleeving space is reduced and the clamping part leaves the groove when the sleeving space is expanded; an elastic piece is arranged between the main body and each locking piece, and the elastic piece applies an elastic acting force to the locking pieces, wherein the elastic acting force enables the sleeving space to tend to be shrunk; the overall structure is simple, quick assembly and disassembly can be achieved, and use is convenient, stable and reliable.

Description

Technical Field

[0001] The invention relates to a pipe joint device, in particular to a pipe joint and a water tank using the same. Background Art

[0002] When connecting pipes to pipes or pipes to valves, the safety and reliability of the pipelines are very important. Pipe thread connections are usually used at the joints, but now with the increase in labor costs, pipe thread connections are very time-consuming and labor-intensive. Sometimes the installation space is small and it is not easy to operate, especially for the assembly and disassembly of large quantities of products on the production line. Pipe thread connections seriously affect the operating efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a spigot connector.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] The present invention also provides a water tank having the above-mentioned spigot joint.

[0006] The intubation connector according to the first aspect of the present invention comprises:

[0007] A main body, wherein a flow channel, a lumen and a plug-in portion are provided on the main body, wherein the lumen is communicated with the flow channel and the lumen runs through the plug-in portion;

[0008] A connecting pipe, wherein a groove is formed on the outer wall of the connecting pipe in the circumferential direction, and the connecting pipe can be inserted into the lumen and communicated with the flow channel;

[0009] A locking member, wherein two locking members are relatively slidably mounted in the plug-in portion, the locking member having a clamping portion, a sleeve space that expands or contracts as the two locking members move relative to each other is defined between the two clamping portions, the sleeve space being located on the insertion path of the tube relative to the lumen, and the sleeve space being configured such that when the clamping portion is contracted, the clamping portion can be clamped into the groove, and when the clamping portion is expanded, the clamping portion can leave the groove;

[0010] An elastic member is installed between the main body and each of the locking members, and the elastic member applies an elastic force to the locking members so that the sleeve space tends to shrink.

[0011] The intubation connector according to the embodiment of the present invention has at least the following beneficial effects: the overall structure is simple, quick assembly and disassembly can be achieved, and the use is convenient, stable and reliable.

[0012] According to some embodiments of the present invention, the clamping portion has a clamping surface in an arc shape, the clamping surfaces of two clamping portions are arranged to face each other, and the sleeve space is defined between the two clamping surfaces.

[0013] According to some embodiments of the present invention, the movement direction of the locking element relative to the main body is a first direction, and the locking element also includes cantilevers arranged on both sides of the clamping portion and extending in the same direction as the first direction, and sliding grooves are opened on the inner walls on both sides of the plug-in portion along the first direction, and the cantilevers are slidably connected in the sliding grooves in a one-to-one matching manner.

[0014] According to some embodiments of the present invention, the direction in which the connecting tube is inserted into the lumen is the second direction, the slide groove includes a first slide groove and a second slide groove, and the inner walls on both sides of the connecting part are provided with the first slide groove and the second slide groove distributed along the second direction, and the cantilevers on both sides of one of the locking elements are correspondingly slidably connected in the first slide grooves on both sides, and the cantilevers on both sides of the other locking element are correspondingly slidably connected in the second slide grooves on both sides, and the cantilevers of the two locking elements are staggered in the first direction.

[0015] According to some embodiments of the present invention, the clamping portion is a semi-cylindrical structure with a semicircular radial cross section, the axial direction of the clamping portion is consistent with the direction in which the connecting pipe is inserted into the flow channel, and the two ends of the two clamping portions in the second direction are flush.

[0016] According to some embodiments of the present invention, a hook is provided at one end of the cantilever away from the clamping portion, and the hook is located outside the slide groove along the first direction. When the locking element moves toward the outside of the plug-in portion, the two clamping portions approach each other and move until the hook abuts against the outside of the end of the slide groove.

[0017] According to some embodiments of the present invention, a first limit platform is provided on opposite sides of the two cantilevers on the same lock component, and a second limit platform is provided on both sides of the clamping portion, and when the lock component moves toward the inner direction of the plug-in portion, the two clamping portions can move away from the first limit platform on one of the lock components and abut against the second limit platform on the other lock component.

[0018] According to some embodiments of the present invention, the connecting pipe has a first end, the connecting pipe is inserted into the tube cavity from the first end, and the circumferential outer wall of the first end is configured as a tapered guide surface, and the outer diameter of the tapered guide surface gradually decreases from the tube cavity toward the flow channel.

[0019] According to some embodiments of the present invention, a plurality of sealing rings are installed on the outer wall of the connecting pipe between the groove and the first end, and the sealing rings abut against the wall of the lumen.

[0020] A water tank according to an embodiment of the second aspect of the present invention comprises a spigot connector.

[0021] The water tank according to the embodiment of the present invention has at least the following beneficial effects: when installing, the water tank and the external water pipe can be connected by simply inserting the connecting pipe into the pipe cavity. When disassembling, the connecting pipe and the main body can be separated, and the assembly and disassembly are very convenient.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a schematic diagram of the structure of the intubation joint;

[0025] Figure 2 yes Figure 1 Schematic diagram of structural decomposition;

[0026] Figure 3 It is a schematic diagram of the structure of the subject;

[0027] Figure 4 It is a schematic diagram of the structure of the lock;

[0028] Figure 5 It is a schematic diagram of the structure of the takeover;

[0029] Figure 6 It is a schematic diagram of the internal structure when the pipe joint is not inserted into the pipe joint, viewed from above;

[0030] Figure 7 It is a schematic diagram of the internal structure of the pipe joint in the main view in one of the use states;

[0031] Figure 8 yes Figure 1 Schematic diagram of the internal structure in the main viewing direction.

[0032] Figure numerals: main body 100; flow channel 110; tube cavity 120; plug-in portion 130; slide groove 140; first slide groove 141; second slide groove 142; connecting pipe 200; groove 210; first end 220; cone guide surface 221; sealing ring 230; locking member 300; clamping portion 310; clamping surface 311; cantilever 320; hook 321; first limit platform 330; second limit platform 340; sleeve space 400; elastic member 500. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, 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 invention, and should not be construed as limiting the present invention.

[0034] The present invention relates to a pipe joint, comprising a main body 100, a pipe 200, a locking element 300 and an elastic element 500.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the main body 100 is provided with a flow channel 110, a tube cavity 120 and a plug-in part 130. In the direction shown in the figure, a tube body extends from the lower part of the main body 100, and the interior of the tube body constitutes the flow channel 110. The tube body can be a straight tube, a curved tube, etc. The tube cavity 120 is opened at the upper part of the main body 100, and the lower end of the tube cavity 120 is connected to the upper end of the flow channel 110. The shape of the tube cavity 120 is adapted to the shape of the connecting pipe 200. The connecting pipe 200 is inserted into the tube cavity 120 from top to bottom, and the tube cavity 120 accommodates a part of the tube body of the connecting pipe 200. The plug-in part 130 is arranged from left to right on the main body 100. The interior of the plug-in part 130 is hollow, and is used to install the lock 300. The tube cavity 120 runs through the plug-in part 130. The outer wall of the connecting pipe 200 is provided with a groove 210, and the groove 210 is annularly concave along the circumference of the connecting pipe 200. When the tube 200 is inserted into the lumen 120, the position of the groove 210 in the lumen 120 is aligned with the plug-in portion 130. Two locking members 300 are respectively inserted and installed into the plug-in portion 130 from the left and right sides of the main body 100. The two locking members 300 slide relatively in the plug-in portion 130. The locking members 300 have a clamping portion 310. A sleeve space 400 is defined between the clamping portions 310 of the two locking members 300. The sleeve space 400 is located on the insertion path of the tube 200 relative to the lumen 120, that is, after the cannula is inserted into the lumen 120, the cannula passes through the sleeve space 400. The sleeve space 400 changes with the relative movement of the two locking members 300. Exemplarily, it can be configured that when the two locks 300 are relatively close, the two clamping parts 310 are also relatively close, so that the sleeve space 400 is reduced; when the two locks 300 are relatively far away, the two clamping parts 310 are also relatively far away, so that the sleeve space 400 is expanded. It can also be configured that when the two locks 300 are relatively close, the two clamping parts 310 are relatively far away, so that the sleeve space 400 is expanded; when the two locks 300 are relatively far away, the two clamping parts 310 are relatively close, so that the sleeve space 400 is reduced. In this embodiment, one lock 300 is inserted into the plug-in part 130 from left to right, and the other lock 300 is inserted into the plug-in part 130 from right to left, and the two locks 300 are distributed left and right. The clamping part 310 of the left lock 300 is located on the right side of the clamping part 310 of the right lock 300, and the two plug-in parts 130 are staggered. When the two locks 300 are relatively close, that is, the left lock 300 moves to the right and drives its clamping part 310 to move to the right, and the right lock 300 moves to the left and drives its clamping part 310 to move to the left, the two clamping parts 310 are relatively far away, and the sleeve space 400 is expanded. When the two locks 300 are relatively far away, that is, the left lock 300 moves to the left and drives its clamping part 310 to move to the left, and the right lock 300 moves to the right and drives its clamping part 310 to move to the right, the two clamping parts 310 are relatively close, and the sleeve space 400 is reduced. The elastic member 500 is installed between the main body 100 and the lock 300.Each locking member 300 can be connected to a corresponding elastic member 500. The elastic member 500 can be a spring or the like. The elastic member 500 uses the main body 100 as a support and exerts an elastic force on the locking member 300, which drives the two locking members 300 to move relative to each other in the direction of shrinking the sleeve space 400. Initially, the connecting pipe 200 is not inserted into the lumen 120. Under the action of the elastic member 500, the sleeve space 400 of the two locking members 300 is shrunk to the minimum. For example. Figure 7 As shown, when the pipe 200 needs to be installed, the two locking members 300 are pressed, the elastic member 500 is elastically deformed, the sleeve space 400 is enlarged, and then the pipe 200 is inserted into the lumen 120. Figure 8 As shown, the two locking members 300 are released, and the sleeve space 400 is reduced under the elastic force of the elastic member 500, and the two clamping parts 310 are clamped into the groove 210 of the connecting pipe 200. The connecting pipe 200 is clamped and locked by the two clamping parts 310, and the connecting pipe 200 is limited to be axially disengaged from the lumen 120. The connecting pipe 200 is connected with the flow channel 110. When the connecting pipe 200 needs to be removed from the main body 100, the two locking members 300 need to be pressed at the same time, so that the two clamping parts 310 are disengaged from the groove 210, and the axial limit of the connecting pipe 200 is cancelled. If one of the locking members 300 is moved, the connecting pipe 200 still cannot be removed from the lumen 120 under the limiting action of the clamping part 310 of the other locking member 300, thereby avoiding the risk of releasing the lock of the connecting pipe 200 due to accidental touch. The overall structure of the intubation joint is simple, and can achieve rapid assembly and disassembly. It is easy to use and stable and reliable.

[0036] The present invention also relates to a water tank, which uses the cannula joint in any embodiment. The cannula 200 can be pre-installed at the bottom of the water tank, and the flow channel 110 on the main body 100 is connected to the external water pipe. When installing, the cannula 200 only needs to be inserted into the tube cavity 120 to connect the water tank and the external water pipe. When disassembling, the cannula 200 and the main body 100 only need to be separated, and the assembly and disassembly is very convenient.

[0037] In one embodiment, the clamping portion 310 has a clamping surface 311, and the clamping surface 311 is in an arc shape. The clamping surfaces 311 of the two clamping portions 310 are arranged opposite to each other, that is, one of the clamping surfaces 311 faces the other clamping surface 311. A sleeve space 400 is defined between the two clamping surfaces 311. The arc of the clamping surface 311 matches the arc of the groove 210. After the clamping portion 310 is clamped into the groove 210, the clamping surface 311 can be attached to the groove wall of the groove 210, increasing the contact area between the clamping portion 310 and the groove 210. When the two clamping portions 310 are clamped to the pipe 200, the sides of the two clamping surfaces 311 can be abutted against each other, so that the shape formed by the sleeve space 400 is a hollow cylinder adapted to the groove 210, and the two clamping portions 310 fully surround the pipe section where the groove 210 of the pipe 200 is located.

[0038] Based on the above embodiments, Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the moving direction of the lock 300 relative to the main body 100 is defined as the first direction, and the first direction is the left-right direction in the illustrated direction. The lock 300 is also provided with two cantilevers 320. The two cantilevers 320 extend in the same direction from the front and rear sides of the clamping portion 310 along the first direction, and the two cantilevers 320 are parallel to each other. Slide grooves 140 are provided on the front and rear inner walls of the plug-in portion 130 along the first direction. The cantilevers 320 are paired and slidably connected in the slide grooves 140 one by one. The movement of the lock 300 is guided by the cooperation of the cantilevers 320 and the slide grooves 140. Among them, the direction in which the pipe 200 is inserted into the lumen 120 is defined as the second direction, and the second direction is the up-down direction in the illustrated direction. The slide grooves 140 include a first slide groove 141 and a second slide groove 142. The front and rear inner walls of the plug-in portion 130 are both provided with a first slide groove 141 and a second slide groove 142. The first slide groove 141 and the second slide groove 142 on the same side wall are distributed up and down along the second direction. The two cantilevers 320 of one of the locks 300 are correspondingly slidably connected to the first slide grooves 141 on both sides. The two cantilevers 320 of the other lock 300 are correspondingly slidably connected to the second slide grooves 142 on both sides. That is, the cantilevers 320 between the two locks 300 are distributed up and down. The cantilevers 320 of the two locks 300 are staggered in the first direction, and at this time, the two clamping parts 310 are mutually misaligned in the left and right positions, that is, the clamping part 310 of the left lock 300 is located on the right side of the clamping part 310 of the right lock 300. In this way, space occupation in the first direction can be saved, and after the pipe 200 is installed, the two locks 300 can be restricted by the pipe 200 from being disengaged to the outside of the plug-in part 130 respectively.

[0039] Furthermore, the clamping portion 310 is a semi-cylindrical structure with a semicircular ring shape in radial cross section. The axial direction of the clamping portion 310 is consistent with the direction in which the connecting pipe 200 is inserted into the flow channel 110. That is, the axial direction of the clamping portion 310 is in the second direction. The upper and lower ends of the two clamping portions 310 in the second direction are flush. After the clamping portion 310 is clamped to the groove 210, when the connecting pipe 200 is pressed downward relative to the lumen 120, the tops of the two clamping portions 310 can support the connecting pipe 200.

[0040] Further, a hook 321 is provided at one end of the cantilever 320 away from the clamping portion 310. The hook 321 is located outside the slide groove 140 along the first direction. Taking the lock member 300 located on the left side of the figure as an example, the cantilever 320 of the lock member 300 extends rightward from the clamping portion 310. The hook 321 is provided at the right end of the cantilever 320. After the cantilever 320 is slidably connected to the corresponding slide groove 140 along the first direction, the hook 321 is located on the right side of the right end of the slide groove 140. When the lock member 300 on the left side moves to the left outside the plug-in portion 130, the hook 321 gradually approaches the right end of the slide groove 140 until the hook 321 abuts against the right end of the slide groove 140, so as to restrict the lock member 300 on the left side from continuing to move to the left and escaping from the plug-in portion 130. The same is true for the locking element 300 on the right side. The corresponding hook 321 limits the rightward movement of the locking element 300 to prevent it from slipping out of the plug-in portion 130 to the right.

[0041] Among them, Figure 4 and Figure 6 As shown, first limit platforms 330 are provided on opposite sides of two cantilevers 320 on the same lock 300. The first limit platform 330 protrudes from the inner side of the cantilever 320 toward the direction of the other cantilever 320. Second limit platforms 340 are provided on both sides of the clamping portion 310. When the lock 300 moves toward the inner direction of the plug-in portion 130, the two clamping portions 310 can move away from each other until the first limit platform 330 on one of the locks 300 abuts against the second limit platform 340 on the other lock 300. That is, the two locks 300 approach each other, and the sleeve space 400 gradually expands to unlock the pipe 200. Through the mutual abutment between the first limit platform 330 and the second limit platform between the two locks 300, the travel of the flow lock 300 moving into the clamping portion 310 is limited.

[0042] In one embodiment, if Figure 5 , Figure 7 and Figure 8As shown, one end of the connecting pipe 200 is defined as the first end 220. The connecting pipe 200 is inserted into the tubular cavity 120 from the first end 220. The circumferential outer wall of the first end 220 is set as a tapered guide surface 221, and the outer diameter of the tapered guide surface 221 gradually decreases from the tubular cavity 120 to the flow channel 110. When the connecting pipe 200 is not inserted into the tubular cavity 120, the two locking parts 300 are close to the minimum position under the action of the elastic member 500. At this time, the sleeve space 400 is smaller than the maximum outer diameter of the first end 220 and larger than the minimum outer diameter of the first end 220. The first end 220 is inserted into the lumen 120, and the conical guide surface 221 of the first end 220 abuts against the top of the sleeve space 400 at this time. The first end 220 continues to move along the second direction, and the conical guide surface 221 pushes the two clamping parts 310 apart along the first direction. The conical guide surface 221 passes through the sleeve space 400 until the groove 210 is aligned with the sleeve space 400. The two locking members 300 are automatically reset under the action of the elastic member 500, and the clamping part 310 is clamped into the groove 210. In this way, the locking member 300 does not need to be manipulated during the insertion of the pipe 200 into the lumen 120, and the installation is more convenient.

[0043] Furthermore, a plurality of sealing rings 230 are installed on the outer wall of the connecting pipe 200 between the groove 210 and the first end 220. The sealing rings 230 abut against the wall of the lumen 120 to prevent liquid from leaking out from between the connecting pipe 200 and the lumen 120.

[0044] In the description of the present invention, 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" 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 invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description of reference terms such as "some specific embodiments" 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 invention. In this specification, the schematic representation of the above terms does 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.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pipe joint, characterized in that: include: A main body (100), wherein the main body (100) is provided with a flow channel (110), a lumen (120) and an inserting portion (130), wherein the lumen (120) is in communication with the flow channel (110), and the lumen (120) runs through the inserting portion (130); A connecting pipe (200), wherein a groove (210) is formed on an outer wall of the connecting pipe (200) in a circumferential direction, and the connecting pipe (200) can be inserted into the tube cavity (120) and communicate with the flow channel (110); a locking member (300), wherein two locking members (300) are relatively slidably mounted in the plug-in portion (130), wherein the locking member (300) has a clamping portion (310), and a sleeve space (400) is defined between the two clamping portions (310) and expands or contracts as the two locking members (300) move relative to each other, wherein the sleeve space (400) is located on an insertion path of the connecting pipe (200) relative to the lumen (120), and wherein the sleeve space (400) is configured such that when the clamping portion (310) is contracted, the clamping portion (310) can be clamped into the groove (210), and when the clamping portion (310) is expanded, the clamping portion (310) can leave the groove (210); An elastic member (500) is installed between the main body (100) and each of the locking members (300), and the elastic member (500) applies an elastic force to the locking members (300) so that the sleeve space (400) tends to shrink.

2. The pipe connector according to claim 1, characterized in that: The clamping portion (310) has a clamping surface (311) in the form of an arc, the clamping surfaces (311) of the two clamping portions (310) are arranged facing each other, and the sleeve space (400) is defined between the two clamping surfaces (311).

3. The pipe connector according to claim 1 or 2, characterized in that: The movement direction of the locking element (300) relative to the main body (100) is a first direction. The locking element (300) further comprises cantilevers (320) arranged on both sides of the clamping portion (310) and extending in the same direction along the first direction. Slide grooves (140) are provided on the inner walls on both sides of the plug-in portion (130) along the first direction. The cantilevers (320) are slidably connected in the slide grooves (140) in a one-to-one matching manner.

4. The pipe connector according to claim 3, characterized in that: The direction in which the connecting pipe (200) is inserted into the lumen (120) is the second direction, the slide groove (140) includes a first slide groove (141) and a second slide groove (142), and the inner walls on both sides of the plug-in portion (130) are provided with the first slide groove (141) and the second slide groove (142) distributed along the second direction, the cantilevers (320) on both sides of one of the locking elements (300) are correspondingly slidably connected in the first slide grooves (141) on both sides, and the cantilevers (320) on both sides of the other locking element (300) are correspondingly slidably connected in the second slide grooves (142) on both sides, and the cantilevers (320) of the two locking elements (300) are staggered in the first direction.

5. The pipe connector according to claim 4, characterized in that: The clamping portion (310) is a semi-cylindrical structure with a semi-circular ring shape in radial cross section; the axial direction of the clamping portion (310) is consistent with the direction in which the connecting pipe (200) is inserted into the flow channel (110); and the two ends of the two clamping portions (310) in the second direction are flush.

6. The pipe connector according to claim 3, characterized in that: A hook (321) is provided at one end of the cantilever (320) away from the clamping portion (310), and the hook (321) is located outside the slide groove (140) along the first direction. When the locking element (300) moves toward the outside of the plug-in portion (130), the two clamping portions (310) are relatively close to each other and move until the hook (321) abuts against the outside of the end of the slide groove (140).

7. The pipe connector according to claim 6, characterized in that: A first limit platform (330) is provided on opposite sides of the two cantilevers (320) on the same locking element (300), and a second limit platform (340) is provided on both sides of the clamping portion (310). When the locking element (300) moves toward the inner direction of the plug-in portion (130), the two clamping portions (310) can move away from each other until the first limit platform (330) on one of the locking elements (300) and the second limit platform (340) on the other locking element (300) abut against each other.

8. The pipe connector according to claim 1, characterized in that: The connecting pipe (200) has a first end (220), and the connecting pipe (200) is inserted into the tube cavity (120) from the first end (220). The circumferential outer wall of the first end (220) is configured as a tapered guide surface (221), and the outer diameter of the tapered guide surface (221) gradually decreases from the tube cavity (120) toward the flow channel (110).

9. The pipe connector according to claim 8, characterized in that: A plurality of sealing rings (230) are installed on the outer wall of the connecting pipe (200) between the groove (210) and the first end (220), and the sealing rings (230) abut against the cavity wall of the tube cavity (120).

10. A water tank, characterized in that: A pipe connector comprising the pipe connector according to any one of claims 1 to 9.

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