Water supply and drainage box for washing machine

By designing multiple mounting hole groups and a stable connection structure, the problem of the single installation method for the washing machine's water supply and drainage box was solved, enabling applicability to various drainage pipeline layouts and stable connection of the angle valve, thus improving the flexibility and stability of installation.

WO2025251347A1PCT designated stage Publication Date: 2025-12-11YUHUAN JINQUAN COPPER CO LTD
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Patent Information

Application Number
PCT/CN2024/099831
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-04
Filing Date
2024-06-18
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

The existing washing machine water supply and drainage box has only one installation method, which makes it difficult for users to adjust the arrangement order of cold water supply pipes, hot water supply pipes and drainage pipes according to the actual installation environment, thus limiting its applicability.

Method used

Design a washing machine water supply and drainage box with at least two sets of mounting holes. Each set of mounting holes has a different arrangement of assembly holes and drain holes. Through the design of connectors and covers, a stable connection and convenient replacement of angle valves can be achieved, supporting multiple installation methods.

Benefits of technology

The installation applicability of the water supply and drainage box has been improved, which can meet the needs of users for various drainage pipeline distributions. The angle valve connection is stable, reducing the risk of loosening and making it more widely applicable.

✦ Generated by Eureka AI based on patent content.

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Abstract

A water supply and drainage box for a washing machine, belonging to the technical field of pipe accessories. The key points of the technical solution thereof are: comprising a box body, the box body being internally provided with a mounting cavity, and the inner wall of the mounting cavity being provided with at least two mounting hole groups; each mounting hole group comprises a first assembly hole, a second assembly hole and a drainage hole, and the arrangement sequence of the first assembly hole, the second assembly hole and the drainage hole differs across each mounting hole group; the first assembly hole is used for mounting a first angle valve, the second assembly hole is used for mounting a second angle valve, and the drainage hole is used for drainage. The present water supply and drainage box has at least two mounting hole groups of different arrangement modes, and each mounting hole group can be used for mounting a first angle valve, a second angle valve and a drainage pipe of a washing machine, such that users can select corresponding mounting hole groups according to actual needs, and the remaining mounting hole groups require no user intervention. The water supply and drainage box is suitable for mounting in two or three arrangement modes, thereby satisfying most user requirements for distribution of water supply pipes and water drainage pipes, and offering better mounting adaptability.
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Description

A laundry machine water supply and drain box TECHNICAL FIELD

[0001] The utility model belongs to pipeline accessory technical field, especially relate to a laundry machine water supply and drain box. BACKGROUND

[0002] The water supply pipeline and the drain pipeline of the sink, the wash basin and the laundry machine are usually connected to the wall through the water supply and drain box for user management and maintenance.

[0003] The plumbing drain assembly disclosed in the US patent with the publication number US9534363B2 comprises a plumbing drain box, a Y-shaped connector and an air inlet valve. The plumbing drain box has a rear wall and four side walls extending outward from the rear wall to form a cavity, and is used to be embedded in the wall. The side walls of the plumbing drain box are provided with a drain outlet and two water inlets, and the drain outlet is located between the two water inlets and is connected to the drain pipe. The Y-shaped connector is arranged in the drain outlet, and the air inlet valve is arranged on the Y-shaped connector. Two water valves are arranged in the two water inlets, and the two water valves are connected to the cold water supply pipe and the hot water supply pipe respectively, so that the two water valves can independently control the supply of cold water and hot water to the washing machine. The discharge pipe of the washing machine is inserted into the Y-shaped connector, and the sewage in the washing machine can be discharged through the drain outlet.

[0004] However, the positions of the drain outlet and the two water inlets of the above-mentioned plumbing drain box (equivalent to the water supply and drain box) are fixed, and the user cannot adjust them, so that the user can only install the corresponding cold water supply pipe, hot water supply pipe and drain pipe according to the positions of the three openings, and the installation method is unique. If the user needs to change the arrangement order of the cold water supply pipe, the hot water supply pipe and the drain pipe according to the actual installation environment, for example, installs the drain pipe on the side and locates one of the cold water supply pipe and the hot water supply pipe in the middle, so that when the cold water supply pipe and the hot water supply pipe are adjacent, the above-mentioned water supply and drain box cannot meet the installation needs of the user, and its application range is limited. The above-mentioned water supply and drain box cannot meet the installation needs of most users. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in the prior art, and provides a laundry machine water supply and drain box.

[0006] The above-mentioned technical purpose of the utility model can be realized through the following technical scheme.

[0007] A laundry machine water supply and drainage box, comprising a box body, the box body has a mounting cavity, the inner wall of the mounting cavity is provided with at least two groups of mounting hole groups, each group of mounting hole groups comprises assembly hole one, assembly hole two and drainage hole, and the arrangement sequence of assembly hole one, assembly hole two and drainage hole of each group of mounting hole groups is different; the assembly hole one is used for installing the angle valve one, the assembly hole two is used for installing the angle valve two, and the drainage hole is used for drainage.

[0008] In the above water supply and drainage box, each group of mounting hole groups occupies one inner wall of the mounting cavity.

[0009] In the above water supply and drainage box, the assembly hole one is detachably connected with a connector one, the connector one has a through hole one and a limiting groove one which are communicated, the through hole one is used for inserting the angle valve one, and the limiting groove one can circumferentially limit the protruding part one of the angle valve one; the assembly hole two is detachably connected with a connector two, the connector two has a through hole two and a limiting groove two which are communicated, the through hole two is used for inserting the angle valve two, and the limiting groove two can circumferentially limit the protruding part two of the angle valve two; the drainage hole is detachably connected with a cover.

[0010] In the above water supply and drainage box, the end of the connector one in the mounting cavity has a flange one and a convex rib one, the end of the connector two in the mounting cavity has a flange two and a convex rib two, and the flange one and the flange two can abut against the inner wall of the mounting cavity; the cover is provided with a convex rib three at the end of the mounting cavity.

[0011] In the above water supply and drainage box, the angle valve one is connected with a lock cap one, the lock cap one cooperates with the protruding part one to axially limit the angle valve one, the end of the connector one outside the mounting cavity is provided with a groove one, and the groove one can accommodate the lock cap one; the angle valve two is connected with a lock cap two, the lock cap two cooperates with the protruding part two to axially limit the angle valve two, and the end of the connector two outside the mounting cavity is provided with a groove two, and the groove two can accommodate the lock cap two.

[0012] In the above water supply and drainage box, two inner spiral pieces one are arranged in the assembly hole one, and the outer wall of the connector one is provided with outer spiral pieces one which can be screwed with the inner spiral pieces one; two inner spiral pieces two are arranged in the assembly hole two, and the outer wall of the connector two is provided with outer spiral pieces two which can be screwed with the inner spiral pieces two.

[0013] In the above water supply and drainage box, an inner spiral piece three is arranged in the drainage hole, and the outer wall of the cover is provided with outer spiral pieces three which can be screwed with the inner spiral piece three.

[0014] In the water supply and drainage box, the outer wall of the joint one is provided with a triangular protrusion one close to the flange one, and the end of the inner spiral piece one is provided with a positioning groove one, and after the inner spiral piece one is screwed with the outer spiral piece one, the triangular protrusion one is matched with the positioning groove one to limit the joint one in the circumferential direction.

[0015] In the water supply and drainage box, the outer wall of the joint one is provided with a triangular protrusion one close to the flange one, and the end of the inner spiral piece one is provided with a positioning groove one, and after the inner spiral piece one is screwed with the outer spiral piece one, the triangular protrusion one is matched with the positioning groove one to limit the joint one in the circumferential direction.

[0016] In the water supply and drainage box, the outer wall of the joint one is provided with a triangular protrusion one close to the flange one, and the end of the inner spiral piece one is provided with a positioning groove one, and after the inner spiral piece one is screwed with the outer spiral piece one, the triangular protrusion one is matched with the positioning groove one to limit the joint one in the circumferential direction.

[0017] In the water supply and drainage box, the outer wall of the joint one is provided with a triangular protrusion one close to the flange one, and the end of the inner spiral piece one is provided with a positioning groove one, and after the inner spiral piece one is screwed with the outer spiral piece one, the triangular protrusion one is matched with the positioning groove one to limit the joint one in the circumferential direction.

[0018] The water supply and drainage box of the washing machine has at least two mounting hole groups, the arrangement modes of the assembly holes one, the assembly holes two and the drainage holes of each mounting hole group are different, and each mounting hole group can be used for mounting the angle valve one, the angle valve two and the washing machine discharge pipe, the user can embed the box body into the wall according to actual needs, so that the angle valve one, the angle valve two and the washing machine discharge pipe are mounted in the mounting hole group, and the remaining mounting hole groups do not need user intervention.

[0019] In addition, the angle valve one can be connected into the assembly hole one of different mounting hole groups through the joint one, the angle valve two can be connected into the assembly hole two of different mounting hole groups through the joint two, the angle valve one and the angle valve two are convenient to replace, and the drainage hole not in use is covered by the cover; furthermore, the joint one is further limited by the triangular protrusion one and the positioning groove one, so that the joint one is more stable in the assembly hole one, correspondingly, after the triangular protrusion two is clamped into the positioning groove two, the joint two is more stable in the assembly hole two, and the joint one and the joint two are not prone to loosening, even if the user opens and closes the angle valve one and the angle valve two for many times. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a partial exploded schematic view of the embodiment;

[0021] Fig. 2 is a structural schematic view of the box body;

[0022] Fig. 3 is a structural schematic diagram of the first joint;

[0023] Fig. 4 is a structural schematic diagram of the second joint;

[0024] Fig. 5 is an exploded structural schematic diagram of the first angle valve and the first joint;

[0025] Fig. 6 is a sectional view of the second angle valve and the second joint after assembly;

[0026] Fig. 7 is a schematic diagram of the external structure of an embodiment;

[0027] Fig. 8 is a sectional view of Fig. 7;

[0028] Fig. 9 is a schematic diagram of the external structure of an embodiment;

[0029] Fig. 10 is a sectional view of Fig. 9;

[0030] Fig. 11 is a schematic diagram of the external structure of an embodiment.

[0031] Reference signs: 1, first angle valve; 11, first protruding part; 12, first locking cap; 2, second angle valve; 21, second protruding part; 22, second locking cap;

[0032] 100, box body; 110, extension pipe; 120, lug;

[0033] 200, mounting cavity; 210, face plate; 211, clearance hole;

[0034] 300, mounting hole group; 310, first assembly hole; 311, first inner helical fin; 312, first positioning groove; 320, second assembly hole; 321, second inner helical fin; 322, second positioning groove; 330, drainage hole; 331, third inner helical fin;

[0035] 400, first joint; 410, first through hole; 420, first limiting groove; 430, first flange; 440, first protruding rib; 450, first groove; 460, first outer helical fin; 470, first triangular protruding block; 480, first stop block;

[0036] 500, second joint; 510, second through hole; 520, second limiting groove; 530, second flange; 540, second protruding rib; 550, second groove; 560, second outer helical fin; 570, second triangular protruding block; 580, second stop block;

[0037] 600, cover; 610, third flange; 620, third protruding rib; 630, third outer helical fin. DETAILED DESCRIPTION

[0038] The utility model discloses the specific embodiment of the utility model is as follows, and further description of the technical scheme of the utility model is made in connection with the drawings, but the utility model is not limited to these embodiments.

[0039] A laundry machine water supply and drainage box, as shown in FIG. 1-FIG. 11, comprising a box body 100, the box body 100 has an installation cavity 200, the inner wall of the installation cavity 200 is provided with at least two groups of installation hole groups 300, each installation hole group 300 at least includes assembly hole one 310, assembly hole two 320, drainage hole 330, and the assembly hole one 310, the assembly hole two 320, the drainage hole 330 of each installation hole group 300 has different arrangement sequence, for example: as shown in FIG. 1-FIG. 2, the drainage hole 330 of one installation hole group 300 is arranged between the assembly hole one 310 and the assembly hole two 320, then the drainage hole 330 of another installation hole group 300 is arranged on the left side, so that the assembly hole one 310 and the assembly hole two 320 are arranged side by side on the right side, or the drainage hole 330 is arranged on the right side, so that the assembly hole one 310 and the assembly hole two 320 are arranged side by side on the left side.

[0040] The assembly hole one 310 is used for installing the angle valve one 1, the assembly hole two 320 is used for installing the angle valve two 2, the drainage hole 330 is used for installing the water tank, wash basin or the discharge pipe of the washing machine and is used for draining water, the angle valve one 1 and the angle valve two 2 are all prior art, and specifically can adopt a waterproof hammer angle valve. Each installation hole group 300 occupies one inner wall of the installation cavity 200, and the assembly hole one 310, the assembly hole two 320 and the drainage hole 330 of each installation hole group 300 are distributed at intervals. In some embodiments, the installation hole group 300 is provided with two groups, and the two installation hole groups 300 are distributed on two opposite inner walls in the installation cavity 200.

[0041] As shown in FIG. 1-FIG. 9, the assembly hole one 310 is detachably connected with a connector one 400, the connector one 400 has a through hole one 410 and a limiting groove one 420 in communication, the through hole one 410 is used for inserting the angle valve one 1, and the limiting groove one 420 is matched with the protruding part one 11 of the angle valve one 1 and can limit the protruding part one 11 circumferentially; the assembly hole two 320 is detachably connected with a connector two 500, the connector two 500 has a through hole two 510 and a limiting groove two 520 in communication, the through hole two 510 is used for inserting the angle valve two 2, and the limiting groove two 520 is matched with the protruding part two 21 of the angle valve two 2 and can limit the protruding part two 21 circumferentially; the drainage hole 330 is detachably connected with a cover 600, and the cover 600 can cover the drainage hole 330.

[0042] Specifically, the end of the joint one 400 located in the mounting cavity 200 has a flange one 430 and a convex rib one 440, the end of the joint two 500 located in the mounting cavity 200 has a flange two 530 and a convex rib two 540, and the end of the cover 600 located in the mounting cavity 200 is provided with a flange three 610 and a convex rib three 620; the flange one 430, the flange two 530 and the flange three 610 can abut against the inner wall of the mounting cavity 200, and the convex rib one 440, the convex rib two 540 and the convex rib three 620 can be gripped by the user's fingers; the user can drive the convex rib one 440 and the joint one 400 to rotate as a whole by exerting force on the convex rib one 440 with the fingers, drive the joint two 500 to rotate by rotating the convex rib two 540, and correspondingly, drive the cover 600 to rotate by rotating the convex rib three 620.

[0043] The lower end of the angle valve one 1 is connected with a cap one 12, which cooperates with the convex part one 11 to clamp the angle valve one 1 on the joint one 400, thereby achieving axial positioning of the angle valve one 1; the end of the joint one 400 located outside the mounting cavity 200 is provided with a groove one 450 for accommodating the cap one 12; the lower end of the angle valve two 2 is connected with a cap two 22, which cooperates with the convex part two 21 to clamp the angle valve two 2 on the joint two 500, thereby achieving axial positioning of the angle valve two 2; the end of the joint two 500 located outside the mounting cavity 200 is provided with a groove two 550 for accommodating the cap two 22. The angle valve one 1, the joint one 400 and the cap one 12 can be connected as a whole and connected to different assembly holes one 310, and the angle valve two 2, the joint two 500 and the cap two 22 can be connected as a whole and connected to different assembly holes two 320. As another option, the angle valve one 1 can be screwed into the through hole one 410, and the angle valve two 2 can be screwed into the through hole two 510, thereby omitting the cap one 12 and the cap two 22.

[0044] As shown in FIGS. 1-7, two inner spiral pieces one 311 are circumferentially spaced apart in the assembly hole one 310, the two inner spiral pieces one 311 are not connected and have a gap therebetween, and the outer wall of the joint one 400 is provided with an outer spiral piece one 460 that can be screwed with the inner spiral piece one 311; two inner spiral pieces two 321 are circumferentially spaced apart in the assembly hole two 320, the two inner spiral pieces two 321 are not connected and have a gap therebetween, and the outer wall of the joint two 500 is provided with an outer spiral piece two 560 that can be screwed with the inner spiral piece two 321.

[0045] An inner spiral piece three 331 is arranged in the drain hole 330, and an outer spiral piece three 630 is arranged on the outer wall of the cover 600, which can be screwed with the inner spiral piece three 331. As an option, the joint one 400, the joint two 500 and the cover 600 can be connected by clamping.

[0046] As shown in FIG. 1-7, further, the joint one 400 is provided with a triangular lug one 470 near the outer wall of the flange one 430, each inner spiral piece one 311 is provided with a positioning slot one 312 near the end of the mounting cavity 200, after the inner spiral piece one 311 is screwed with the outer spiral piece one 460, the triangular lug one 470 is clamped into the positioning slot one 312 and limits the joint one 400 circumferentially, so that the joint one 400 cannot continue to be screwed into or out of the assembly hole one 310, to prevent the joint one 400 from loosening in the assembly hole one 310, only by increasing the force applied to the joint one 400 and rotating in the opposite direction, the triangular lug one 470 can be screwed out of the positioning slot one 312, and then the joint one 400 can be normally screwed out of the assembly hole one 310. The joint two 500 is provided with a triangular lug two 570 near the outer wall of the flange two 530, each inner spiral piece two 321 is provided with a positioning slot two 322 near the end of the mounting cavity 200, after the inner spiral piece two 321 is screwed with the outer spiral piece two 560, the triangular lug two 570 is clamped into the positioning slot two 322 and limits the joint two 500 circumferentially, so that the joint two 500 cannot continue to be screwed into or out of the assembly hole two 320, to prevent the joint two 500 from loosening in the assembly hole two 320, only by increasing the force applied to the joint two 500 and rotating in the opposite direction, the triangular lug two 570 can be screwed out of the positioning slot two 322, and then the joint two 500 can be normally screwed out of the assembly hole two 320.

[0047] The outer wall of the joint one 400 is provided with a stop block one 480 near the triangular lug one 470, after the triangular lug one 470 enters the positioning slot one 312, the stop block one 480 abuts against the end of the inner spiral piece one 311, to further improve the stability of the joint one 400; the outer wall of the joint two 500 is provided with a stop block two 580 near the triangular lug two 570, after the triangular lug two 570 enters the positioning slot two 322, the stop block two 580 abuts against the end of the inner spiral piece two 321, to further improve the stability of the joint two 500.

[0048] In some embodiments, the assembly hole one 310 and the assembly hole two 320 have the same structure, the joint one 400 and the joint two 500 also have the same structure, and the joint one 400 and the joint two 500 can be used interchangeably.

[0049] The outer wall of the box body 100 has an extension pipe 110 communicating with a drainage hole 330, and the drainage hole 330 is perpendicular to the ground.

[0050] As shown in FIG. 2 and FIG. 7, the outer side of the box body 100 is provided with a plurality of lugs 120, which are used for mounting the box body 100 in a wall or a support; the opening of the mounting cavity 200 is clamped with a panel 210, and the panel 210 has a clearance hole 211 communicating with the mounting cavity 200.

[0051] The working principle of the utility model is as follows:

[0052] According to the user's usage habits or actual installation conditions, the corresponding installation hole group 300 (such as the installation hole group 300 in which the drain hole 330 is located between the assembly hole one 310 and the assembly hole two 320) is selected, as shown in FIG. 7 and FIG. 8, the installation direction of the box body 100 is adjusted, so that the selected installation hole group 300 is directed towards the ground, that is, the selected assembly hole one 310, assembly hole two 320 and drain hole 330 are all close to the ground.

[0053] The angle valve one 1, the joint one 400 and the cap one 12 are connected into an integral component and screwed into the assembly hole one 310 through the joint one 400 until the triangular protrusion one 470 enters the positioning groove one 312, and then a water supply pipe (such as a cold water pipe) is connected to the lower end of the angle valve one 1;

[0054] Similarly, the angle valve two 2, the joint two 500 and the cap two 22 are connected into an integral component and screwed into the assembly hole two 320 through the joint two 500 until the triangular protrusion two 570 enters the positioning groove two 322, and then another water supply pipe (such as a hot water pipe) is used to supply water to the angle valve two 2;

[0055] After the cover 600 in the drain hole 330 is unscrewed, the washing machine discharge pipe is inserted into the drain hole 330, and the installation of the water supply and drainage box is realized.

[0056] Since the washing machine water supply and drainage box has two or more installation hole groups 300, the arrangement of the assembly hole one 310, the assembly hole two 320 and the drain hole 330 of each installation hole group 300 is different, the user can choose more installation methods, and the application range is wide. It should be noted that the washing machine water supply and drainage box can also be used with a sink or a washbasin.

[0057] The specific embodiments described herein are merely illustrative of the spirit of the present application; those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims. Best mode for carrying out the present application

[0058] Enter the best mode for carrying out the present application description paragraph here. Embodiment of the present application

[0059] Enter the embodiment description paragraph of the present application here. Industrial applicability

[0060] Enter the industrial applicability description paragraph here. Free content of the sequence listing

[0061] Insert sequence listing free text description paragraph here.

Claims

1. A laundry machine water supply and drain box, characterized by: The utility model provides a box body (100) including, the box body (100) has the installation cavity (200) in, the inner wall of installation cavity (200) is opened at least two groups of mounting hole group (300), each mounting hole group (300) includes assembly hole one (310), assembly hole two (320), drain hole (330), and the assembly hole one (310), assembly hole two (320), drain hole (330) of each mounting hole group (300) are arranged in sequence not same, the assembly hole one (310) is used for the installation of angle valve one (1), the assembly hole two (320) is used for the installation of angle valve two (2), and the drain hole (330) is used for drainage.

2. The water supply and drainage box according to claim 1, characterized in that: Each mounting hole group (300) occupies an inner wall of the installation cavity (200).

3. The water supply and drainage box according to claim 1, characterized in that: The assembly hole one (310) is detachably connected with connector one (400), the connector one (400) has the through hole one (410) of intercommunication, the limiting groove one (420), the through hole one (410) is used for the insertion of the angle valve one (1), the limiting groove one (420) can be circumferentially limited to the convex part one (11) of the angle valve one (1), the assembly hole two (320) is detachably connected with connector two (500), the connector two (500) has the through hole two (510) of intercommunication, the limiting groove two (520), the through hole two (510) is used for the insertion of the angle valve two (2), the limiting groove two (520) can be circumferentially limited to the convex part two (21) of the angle valve two (2), the drain hole (330) is detachably connected with the cover (600).

4. The water supply and drainage box according to claim 3, characterized in that: The end of the connector one (400) in the installation cavity (200) has the flange one (430), the convex rib one (440), the end of the connector two (500) in the installation cavity (200) has the flange two (530), the convex rib two (540), and the flange one (430), the flange two (530) can be abutted with the inner wall of the installation cavity (200), the cover (600) is located at the end of the installation cavity (200) and is provided with the convex rib three (620).

5. The water supply and drainage box according to claim 3, characterized in that: The angle valve one (1) is connected with the lock cap one (12), the lock cap one (12) is matched with the convex part one (11) and is axially limited to the angle valve one (1), the end of the connector one (400) outside the installation cavity (200) is provided with the recess one (450), and the recess one (450) can accommodate the lock cap one (12), the angle valve two (2) is connected with the lock cap two (22), the lock cap two (22) is matched with the convex part two (21) and is axially limited to the angle valve two (2), the end of the connector two (500) outside the installation cavity (200) is provided with the recess two (550), and the recess two (550) can accommodate the lock cap two (22).

6. The water supply and drainage box according to claim 4, characterized in that: Two inner screw pieces one (311) are arranged in the assembly hole one (310) at intervals, and the outer wall of the connector one (400) is provided with outer screw pieces one (460) capable of being screwed with the inner screw pieces one (311).

7. The water supply and drainage box according to claim 4, characterized in that: An inner screw piece three (331) is arranged in the drain hole (330), and the outer wall of the cover (600) is provided with outer screw pieces three (630) capable of being screwed with the inner screw piece three (331).

8. The water supply and drainage box according to claim 6, characterized in that: The outer wall of the connector one (400) near the flange one (430) is provided with a triangular protrusion one (470), and the end of the inner screw piece one (311) is provided with a positioning groove one (312). After the inner screw piece one (311) is screwed with the outer screw piece one (460), the triangular protrusion one (470) cooperates with the positioning groove one (312) to limit the connector one (400) in the circumferential direction. The outer wall of the connector two (500) near the flange two (530) is provided with a triangular protrusion two (570), and the end of the inner screw piece two (321) is provided with a positioning groove two (322). After the inner screw piece two (321) is screwed with the outer screw piece two (560), the triangular protrusion two (570) cooperates with the positioning groove two (322) to limit the connector two (500) in the circumferential direction.

9. The water supply and drainage box according to claim 8, characterized in that: The outer wall of the connector one (400) is provided with a stop block one (480) near the triangular protrusion one (470). After the triangular protrusion one (470) enters the positioning groove one (312), the stop block one (480) abuts against the end of the inner screw piece one (311). The outer wall of the connector two (500) is provided with a stop block two (580) near the triangular protrusion two (570). After the triangular protrusion two (570) enters the positioning groove two (322), the stop block two (580) abuts against the end of the inner screw piece two (321).

10. The water supply and drainage box according to any one of claims 1-9, characterized in that: The outer wall of the box body (100) has an extension tube (110) communicating with the drain hole (330).

Citation Information

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