Angle valve for water supply and drainage box of washing machine

Abstract

The utility model discloses an angle valve for a water supply and drainage box of a washing machine, which belongs to the technical field of pipeline fittings and is characterized by comprising a valve body, a water inlet and a water outlet are arranged on the valve body, a bulge is arranged outside the valve body, an installation cover is arranged outside the bulge, and the installation cover is used for connecting the valve body into the water supply and drainage box of the washing machine. The installation cover comprises a first cover plate and a second cover plate which are detachably connected, two buckles are arranged on the first cover plate, two limiting blocks matched with the two buckles are arranged on the second cover plate, the buckles and the limiting blocks can be matched to limit the first cover plate and the second cover plate, and the first cover plate and the second cover plate are matched to limit the protrusions. The angle valve and the mounting cover are low in assembly difficulty, rapid and efficient, no extra mounting tool is needed, the first cover plate and the second cover plate can completely limit the protrusions, the valve body cannot rotate or slide up and down relative to the mounting cover, and connection between the valve body and the mounting cover is firmer; the first cover plate and the second cover plate cannot be dislocated or shaken after being connected, and the mounting cover is more stable.

Description

Technical Field

[0001] This utility model belongs to the field of pipe fittings technology, and specifically relates to an angle valve for a washing machine water supply and drainage box. Background Technology

[0002] For some American residents, the water supply and drainage lines for sinks, washbasins, and washing machines in their homes are often connected to the wall via a water supply and drainage box (or outlet box) for user management and maintenance.

[0003] For example, the US patent with publication number US11674292B2 discloses a Modular plumbing box system and methods of mounting the same, which includes a supply box and a drain box. The supply box has two openings at the bottom, and each of the two openings is equipped with an angle valve. The two angle valves are used to control the supply of cold water and hot water to the washing machine, respectively. The inner wall of the drain box is provided with a drain outlet for the installation of the washing machine drain pipe.

[0004] US Patent No. 7270144B2 discloses a Universal washing machine outletbox, which specifically discloses that an opening in the inner wall of the outletbox is provided with a valve seat insert for inserting an angle valve. To ensure the installation stability of the angle valve in the valve seat insert, a nut is still installed below the valve seat insert to limit the angle valve, so that the nut and the protrusion on the angle valve cooperate to clamp the valve seat insert, thereby realizing the installation of the angle valve in the outletbox.

[0005] The above technical solution has at least the following drawbacks: Even with the valve seat insert screwed into the opening of the outlet box, a nut is still needed to limit the angle valve's vertical movement to prevent it from being pulled directly out of the valve seat insert. This installation method requires more components and manual rotation of the nut to connect it to the angle valve's threaded connection. Furthermore, since the user needs to turn the handwheel of the angle valve to open and close it, the nut is prone to loosening over time. This means the fit between the valve seat insert and the nut cannot fully limit the angle valve's circumferential movement, and the angle valve may rotate with the handwheel when the user turns it. Therefore, the assembly method of this valve seat insert and angle valve still needs improvement. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an angle valve for the water supply and drainage box of a washing machine. The technical problem to be solved by this utility model is: how to optimize the installation of the angle valve in the water supply and drainage box.

[0007] The above-mentioned technical objectives of this utility model can be achieved through the following technical solutions:

[0008] An angle valve for a washing machine's water supply and drainage box includes a valve body with an inlet and an outlet. A protrusion is located on the outside of the valve body, and a mounting cover is provided on the outside of the protrusion. The mounting cover connects the valve body to the washing machine's water supply and drainage box. The mounting cover includes a detachably connected cover plate one and a cover plate two. The cover plate one has two snap fasteners, and the cover plate two has two limiting blocks adapted to the snap fasteners. The snap fasteners and the limiting blocks cooperate to limit the cover plate one and the cover plate two, and the cover plate one and the cover plate two also cooperate to limit the protrusion.

[0009] The above technical solution involves two parts: Cover Plate 1 and Cover Plate 2. These parts are engaged with a locking block to form a single unit. Cover Plate 1 and Cover Plate 2 are held in place by the protrusion, making the mounting cover and valve body a single, integrated component. Compared to existing technologies, this angle valve and mounting cover assembly method is quick and requires no additional installation tools. Furthermore, Cover Plate 1 and Cover Plate 2 limit the protrusion, preventing the valve body from rotating or sliding relative to the mounting cover. The connection between the two is more secure. After assembly, the mounting cover and valve body can be installed as a single unit into the washing machine's water supply and drainage box, making installation easier for workers.

[0010] In the aforementioned angle valve, cover plate one has a groove one, and cover plate two has a groove two. The sidewalls of groove one and groove two are adapted to the external shape of the protrusion. After cover plate one and cover plate two are combined, they are clamped onto the protrusion, and groove one and groove two cooperate to limit the protrusion. The outer wall of the protrusion and its upper and lower sides are surrounded by groove one and groove two, so that the mounting cover cannot rotate or slide up and down relative to the valve body, thereby achieving complete limiting between the mounting cover and the valve body, and preventing loosening between the two.

[0011] In the aforementioned angle valve, at least one positioning groove is provided on the side of the first cover plate, and a positioning post adapted to the positioning groove is provided on the second cover plate. The positioning post is inserted into the positioning groove and limits the positioning of the first and second cover plates. During the engagement of the first and second cover plates, the positioning post is inserted into the positioning groove to further guide the engagement of the first and second cover plates, and can effectively prevent misalignment or shaking after the first and second cover plates are connected, ensuring the stability of the connection.

[0012] In the aforementioned angle valve, at least two raised ribs are distributed circumferentially on the outer wall of the positioning pin. The positioning pin abuts against the wall of the positioning groove through these raised ribs. The contact between the positioning pin and the positioning groove via the raised ribs reduces the machining accuracy of the positioning pin and the positioning groove. As long as the raised ribs maintain an interference fit with the positioning groove, wobbling after the first and second cover plates are connected can be prevented.

[0013] In the aforementioned angle valve, the lower end of cover plate one has a semi-ring one, and the lower end of cover plate two has a semi-ring two. The inner sides of both semi-ring one and semi-ring two can abut against the outer wall of the valve body. After cover plate one and cover plate two are combined into a complete mounting cover, the inner sides of semi-ring one and semi-ring two abut against the outer wall of the valve body, further preventing the valve body from swaying in the left-right and front-back directions within the mounting cover, thus improving the stability between the mounting cover and the valve body.

[0014] In the aforementioned angle valve, a third semi-ring is provided on the outer side of the first semi-ring, and a fourth semi-ring is provided on the outer side of the second semi-ring. A rib is provided between the first and third semi-rings, and a rib is provided between the second and fourth semi-rings. A wedge is provided on the outer wall of the third semi-ring, and a wedge is provided on the outer wall of the fourth semi-ring. Rib one enhances the structural strength between the first and third semi-rings, and correspondingly, rib two enhances the structural strength between the second and fourth semi-rings. Wedges one and two are used to rotate and engage with the washing machine's water supply and drainage box.

[0015] In the aforementioned angle valve, the valve body also has an installation port connecting the inlet and outlet. A water hammer eliminator is installed within the installation port. The water hammer eliminator includes a connector, a sleeve, and a piston. The connector is located within the installation port, and the lower end of the sleeve is connected to the connector, which connects the lower end of the sleeve to the interior of the valve body. The upper end of the sleeve is sealed by an end cap, and a sealing gasket seals the end cap and the interior of the sleeve. The piston is slidably disposed within the sleeve, and a buffer is provided between the piston and the sealing gasket. Water hammer generated inside the valve body acts directly on the piston, forcing it to slide. The buffer provides cushioning for the piston, thereby eliminating the damage of water hammer to the valve body and ensuring its service life. Furthermore, the sealing gasket seals any gaps that may exist between the end cap and the sleeve, maintaining the long-term airtightness of the sleeve and ensuring the service life of the water hammer eliminator.

[0016] In the aforementioned angle valve, a ball core is rotatably mounted within the valve body, and a valve stem is mounted on the ball core. The outer end of the valve stem passes through the valve body and is connected to a handle. An identification card is detachably attached to the handle, and this identification card is used to mark the type of medium within the valve body. The rotation of the ball core is controlled by the handle, thereby controlling the opening and closing of the angle valve. Users can distinguish the types of media within different valve bodies using the identification card, facilitating user identification and operation. If the installer installs the angle valve on the wrong water supply line, causing the type of medium within the valve body to not correspond to the identification card, simply remove the identification card and replace it with one corresponding to the type of medium within the valve body; there is no need to disassemble and reassemble the angle valve.

[0017] In the aforementioned angle valve, the handle has a connected assembly groove and an assembly hole. The wall of the assembly hole has a protrusion. The assembly groove is for filling the identification card. The inner side of the identification card has a locking foot with a hook. After the locking foot is inserted into the assembly hole, the hook engages with the protrusion and limits the positioning of the identification card. Similarly, after the locking foot is inserted into the assembly hole, the hook engages with the protrusion and limits the identification card within the assembly groove, thus assembling the identification card.

[0018] In the aforementioned angle valve, the outer wall of the identification card is flush with the outer wall of the handle. A notch is provided on the side of the handle near the identification card, allowing a tool or user's fingernail to be inserted. The flush design of the identification card with the handle ensures a seamless integration between the two, preventing the card from easily detaching. The card can be easily removed by inserting a tool or user's fingernail into the notch, making installation and removal convenient.

[0019] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0020] 1. This angle valve and mounting cover are easy to assemble, quick, and efficient, requiring no additional installation tools. Cover plate one and cover plate two completely limit the protrusion, preventing the valve body from rotating or sliding relative to the mounting cover. This results in a more secure connection between the valve body and the mounting cover. After assembly, the mounting cover and valve body can be installed as a single unit into the washing machine's water supply and drainage box, making installation easier. Furthermore, after cover plate one and cover plate two are connected, the mounting cover will not misalign or wobble, ensuring a more stable connection. The mounting cover can also be used directly with existing angle valves. Since the mounting cover does not need to be fitted onto the protrusion from the bottom of the valve body, even if the diameter of the bottom of the valve body is larger than the outer diameter of the valve body, it will not affect the assembly between cover plate one and cover plate two and the valve body, thus broadening the applicability of the mounting cover.

[0021] 2. Water hammer generated inside the valve body is eliminated by the water hammer eliminator. The sealing gasket can seal any gaps that may exist between the end cover and the sleeve. The inside of the sleeve can maintain long-term airtightness, while ensuring the service life of the valve body and the water hammer eliminator.

[0022] 3. The identification card allows users to accurately distinguish the type of medium supplied in the valve body. The identification card is also detachable. Even if the worker installs the angle valve on the wrong water supply pipe, making the identification card unable to correspond to the type of medium in the valve body, it is only necessary to replace it with the correct identification card. This can effectively make up for the impact on the user's daily operation caused by the worker's misinstallation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of an embodiment;

[0024] Figure 2 for Figure 1A schematic diagram of the exploded structure;

[0025] Figure 3 This is a cross-sectional view of the valve body;

[0026] Figure 4 This is a structural schematic diagram of cover plate one;

[0027] Figure 5 This is a schematic diagram of the structure of cover plate two;

[0028] Figure 6 Exploded view of the structure for mounting the cover;

[0029] Figure 7 for Figure 6 A schematic diagram of the assembled structure;

[0030] Figure 8 This is one of the cross-sectional schematic diagrams of the embodiment;

[0031] Figure 9 This is a second cross-sectional view of an embodiment;

[0032] Figure 10 This is a partial cross-sectional schematic diagram of an embodiment;

[0033] Figure 11 This is a cross-sectional view of the handle;

[0034] Figure 12 This is an exploded view of the handle and the identification card.

[0035] Figure 13 A cross-sectional schematic diagram of a water hammer eliminator;

[0036] Figure 14 This is a schematic diagram of the assembly of the valve body and the washing machine's water supply and drainage box.

[0037] Attached label: 1. Washing machine water supply and drainage box;

[0038] 100. Valve body; 110. Inlet; 120. Outlet; 130. Mounting port; 140. Protrusion; 150. Ball core; 160. Valve stem; 170. Handle; 171. Assembly groove; 172. Assembly hole; 1721. Protrusion; 173. Notch;

[0039] 200. Install the cover;

[0040] 300. Cover plate 1; 310. Buckle; 320. Groove 1; 330. Positioning groove; 340. Half ring 1; 350. Half ring 3; 351. Wedge 1; 360. Rib 1; 370. Flange;

[0041] 400. Cover plate two; 410. Limiting block; 420. Groove two; 430. Positioning post; 431. Raised rib; 440. Half ring two; 450. Half ring four; 451. Wedge two; 460. Rib two;

[0042] 500. Water hammer eliminator; 510. Connector; 520. Sleeve; 521. End cap; 530. Piston; 540. Sealing gasket; 541. Receiving groove; 550. Buffer component;

[0043] 600. Identification card; 610. Clip foot; 611. Clip hook. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] An angle valve for the water inlet and outlet box of a washing machine, such as Figures 1-14 As shown, the device includes a valve body 100, which has an inlet 110, an outlet 120, and a mounting port 130. The mounting port 130 is connected to both the inlet 110 and the outlet 120. The valve body 100 has an angular protrusion 140 on its exterior. An installation cover 200 is provided on the exterior of the protrusion 140. The installation cover 200 is used to connect the valve body 100 to the washing machine's water supply and drainage box 1. The installation cover 200 includes a detachably connected cover plate 300 and a cover plate 400. The cover plate 300 has two snap fasteners 310, and the cover plate 400 has two limiting blocks 410 that are adapted to the two snap fasteners 310. The snap fasteners 310 and the limiting blocks 410 engage to combine the cover plate 300 and the cover plate 400 into a whole. The cover plate 300 and the cover plate 400 cooperate to limit the protrusion 140.

[0046] Specifically, cover plate 300 has a groove 320, and cover plate 400 has a groove 420. Grooves 320 and 420 are connected. The sidewalls of grooves 320 and 420 are adapted to the external shape of protrusion 140. After cover plate 300 and cover plate 400 are combined, they are clamped onto protrusion 140, and grooves 320 and 420 cooperate to limit protrusion 140 in the axial and circumferential directions. That is, both the upper and lower sides of protrusion 140 are tightly surrounded and fitted by grooves 320 and 420, and mounting cover 200 cannot rotate or slide in the vertical direction relative to protrusion 140, thereby achieving complete limitation of valve body 100 by mounting cover 200.

[0047] like Figures 1-9As shown, at least one positioning groove 330 is provided on the side of the first cover plate 300, and the second cover plate 400 is provided with positioning posts 430 that are adapted to the positioning grooves 330. The number of positioning posts 430 corresponds one-to-one with the number of positioning grooves 330. The positioning posts 430 are inserted into the positioning grooves 330 and limit the positioning of the first cover plate 300 and the second cover plate 400, thereby preventing misalignment after the first cover plate 300 and the second cover plate 400 are connected, ensuring a more stable engagement between the buckle 310 and the limiting block 410, and improving the stability of the first cover plate 300 and the second cover plate 400 after connection.

[0048] The outer wall of the positioning post 430 has at least two raised ribs 431 distributed circumferentially. The length direction of the raised ribs 431 is the same as the length direction of the positioning post 430. After the positioning post 430 is inserted into the positioning groove 330, the positioning post 430 abuts against the groove wall of the positioning groove 330 through the raised ribs 431 to ensure that the raised ribs 431 and the positioning groove 330 achieve an interference fit, so as to avoid shaking or loosening after the cover plate 1 300 and cover plate 2 400 are connected.

[0049] The lower end of cover plate 300 has a semi-ring 340, and the lower end of cover plate 400 has a semi-ring 440. The semi-ring 340 and the semi-ring 440 can cooperate to form a complete ring. The inner walls of the semi-ring 340 and the semi-ring 440 can abut against the outer wall of valve body 100, further preventing the mounting cover 200 from shaking relative to valve body 100.

[0050] A semi-ring 350 is provided on the outer side of semi-ring 1 340, and a semi-ring 450 is provided on the outer side of semi-ring 2 440. A rib 360 is provided between semi-ring 1 340 and semi-ring 350, and a rib 460 is provided between semi-ring 2 440 and semi-ring 450. Rib 1 360 is used to increase the structural strength of cover plate 1 300, and rib 2 460 is used to increase the structural strength of cover plate 2 400. Buckle 310 is located on semi-ring 350, and limit block 410 is located on semi-ring 450. A wedge 351 is provided on the outer wall of semi-ring 350, and a wedge 451 is provided on the outer wall of semi-ring 450. Both cover plate 300 and cover plate 400 have flanges 370 on their outer sides. The mounting cover 200 is connected to the washing machine water supply and drainage box 1 through wedge block 351 and wedge block 451. The two flanges 370 are pressed against the inner wall of the washing machine water supply and drainage box 1. That is, the flanges 370 cooperate with wedge block 351 and wedge block 451 to firmly connect the mounting cover 200 to the side wall of the washing machine water supply and drainage box 1, thereby realizing the connection between the mounting cover 200 and the washing machine water supply and drainage box 1.

[0051] like Figures 8-9 , Figure 13As shown, a water hammer eliminator 500 is installed in the installation port 130. The water hammer eliminator 500 includes a connector 510, a sleeve 520, and a piston 530. The connector 510 is installed in the installation port 130. The lower end of the sleeve 520 is connected to the connector 510, and the connector 510 connects the lower end of the sleeve 520 to the interior of the valve body 100. The upper end of the sleeve 520 is sealed by an end cap 521. The end cap 521 and the interior of the sleeve 520 are sealed by a sealing gasket 540. The top of the sealing gasket 540 has a receiving groove 541. The piston 530 is slidably installed in the lower end of the sleeve 520. A buffer 550 is provided between the piston 530 and the sealing gasket 540. The buffer 550 is made of gas. In some embodiments, the buffer 550 is a spring; there are occasional gaps between the end cap 521 and the sleeve 520 during welding, and the weld between the end cap 521 and the sleeve 520 is sealed by the sealing gasket 540, so that the inside of the sleeve 520 can maintain long-term airtightness.

[0052] A ball core 150 is rotatably installed inside the valve body 100. The ball core 150 is a three-way ball core, such as... Figure 8 , Figure 9 As shown, when the angle valve is in the open state, the ball core 150 connects the inlet 110, the outlet 120, and the connector 510. Figure 10 As shown, when the angle valve is in the closed state, the ball core 150 connects the outlet 120 and the connector 510, that is, the ball core 150 always maintains the connection between the outlet 120 and the inside of the water hammer eliminator 500.

[0053] like Figure 2 , Figures 8-10 As shown, a valve stem 160 is provided on the ball core 150. The outer end of the valve stem 160 passes through the valve body 100 and is connected to a handle 170. The handle 170 is used to drive the ball core 150 to rotate, thereby controlling the opening and closing of the angle valve. An identification card 600 is detachably connected to the handle 170. The identification card 600 is used to mark the type of medium inside the valve body 100. The identification card 600 distinguishes the type of water supplied by the corresponding angle valve through different colors. In this embodiment, the medium inside the valve body 100 is mainly cold water or hot water. The function of the identification card 600 is to distinguish whether the water supplied inside the valve body 100 is cold water or hot water, so that the user can accurately operate the corresponding angle valve.

[0054] The handle 170 has a connected mounting groove 171 and mounting hole 172. The mounting hole 172 has a protrusion 1721 on its wall. The protrusion 1721 can be annular. The mounting groove 171 is filled with the identification card 600. The inner side of the identification card 600 is provided with at least one locking foot 610 with elastic deformation performance. The locking foot 610 has a hook 611. After the locking foot 610 is inserted into the mounting hole 172, the hook 611 engages with the protrusion 1721 and limits the positioning of the identification card 600.

[0055] Furthermore, the identification card 600 is recessed into the assembly slot 171, and the outer wall of the identification card 600 is flush with the outer wall of the handle 170 to prevent the identification card 600 from protruding and affecting the user's operation of the handle 170. A notch 173 is reserved on the side of the handle 170 near the identification card 600. The notch 173 allows tools or the user's fingernail to be inserted, making it easy for the user to pry the identification card 600 out of the assembly slot 171.

[0056] The working principle of this utility model is as follows:

[0057] During assembly, attach cover plate 300 to the outer wall of valve body 100, allowing protrusion 140 to enter groove 320. Then align the positioning post 430 on cover plate 400 with positioning groove 330 and press cover plate 400 and cover plate 300 together firmly. The two clips 310 will accurately engage with the corresponding limiting blocks 410, and cover plate 300 and cover plate 400 can be clamped on protrusion 140. Alternatively, cover plate 300 and cover plate 400 can be swapped before assembly. At this point, the inner walls of semi-ring 340 and semi-ring 440 are pressed against the outer wall of valve body 100. The mounting cover 200 formed by cover plate 300 and cover plate 400 completely limits protrusion 140, allowing valve body 100 and mounting cover 200 to be installed as a single unit. The mounting cover 200 is then connected to the washing machine's water supply and drainage box 1 to install the diagonal valve.

[0058] Two angle valves are installed in the water supply and drainage box 1 of the washing machine, so that one angle valve supplies cold water and the other angle valve supplies hot water. The water supply type of the two angle valves is distinguished by the color of the identification card 600; for example, the blue identification card 600 corresponds to the valve body 100 that supplies cold water, and the red identification card 600 corresponds to the valve body 100 that supplies hot water.

[0059] If a worker mistakenly installs the valve body 100 with the blue identification card to the hot water pipe and the valve body 100 with the red identification card to the cold water pipe, the worker only needs to remove the blue and red identification cards from the handle 170 and then correctly reinstall the blue identification card onto the handle 170 of the angle valve connected to the cold water pipe and the red identification card onto the handle 170 of the angle valve connected to the hot water pipe. This ensures that the color of the identification card 600 corresponds to the type of water supplied to the angle valve, eliminating the need to disassemble and reassemble both angle valves. This mitigates the impact on the user's daily operation caused by the worker's mistaken installation.

[0060] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An angle valve for a washing machine's water supply and drainage box, comprising a valve body (100), wherein the valve body (100) has an inlet (110) and an outlet (120), characterized in that: The valve body (100) has a protrusion (140) on its outside. A mounting cover (200) is provided on the outside of the protrusion (140). The mounting cover (200) is used to connect the valve body (100) to the water supply and drainage box (1) of the washing machine. The mounting cover (200) includes a cover plate one (300) and a cover plate two (400) that can be detachably connected. The cover plate one (300) is provided with two buckles (310). The cover plate two (400) is provided with two limiting blocks (410) that are adapted to the two buckles (310). The buckles (310) and the limiting blocks (410) can cooperate to limit the cover plate one (300) and the cover plate two (400). The cover plate one (300) and the cover plate two (400) cooperate to limit the protrusion (140).

2. The angle valve for the washing machine water supply and drainage box (1) according to claim 1, characterized in that: The first cover plate (300) has a first groove (320) and the second cover plate (400) has a second groove (420). The sidewalls of the first groove (320) and the second groove (420) are adapted to the external shape of the protrusion (140). After the first cover plate (300) and the second cover plate (400) are combined, they are clamped on the protrusion (140), and the first groove (320) and the second groove (420) cooperate to limit the position of the protrusion (140).

3. The angle valve for the washing machine water supply and drainage box (1) according to claim 1, characterized in that: The cover plate one (300) has at least one positioning groove (330) on its side, and the cover plate two (400) has a positioning post (430) adapted to the positioning groove (330). The positioning post (430) is inserted into the positioning groove (330) and limits the position of the cover plate one (300) and the cover plate two (400).

4. The angle valve for the washing machine water supply and drainage box (1) according to claim 3, characterized in that: The outer wall of the positioning post (430) has at least two ribs (431) distributed circumferentially, and the positioning post (430) abuts against the groove wall of the positioning groove (330) through the ribs (431).

5. The angle valve for the washing machine water supply and drainage box (1) according to claim 1, characterized in that: The lower end of the cover plate one (300) has a semi-ring one (340), and the lower end of the cover plate two (400) has a semi-ring two (440). The inner sides of the semi-ring one (340) and the semi-ring two (440) can abut against the outer wall of the valve body (100).

6. The angle valve for the washing machine water supply and drainage box (1) according to claim 5, characterized in that: A third semi-ring (350) is provided on the outer side of the first semi-ring (340), and a fourth semi-ring (450) is provided on the outer side of the second semi-ring (440). A first rib (360) is provided between the first semi-ring (340) and the third semi-ring (350), and a second rib (460) is provided between the second semi-ring (440) and the fourth semi-ring (450). A wedge block (351) is provided on the outer wall of the third semi-ring (350), and a wedge block (451) is provided on the outer wall of the fourth semi-ring (450).

7. The angle valve for the washing machine water supply and drainage box (1) according to claim 1, characterized in that: The valve body (100) is also provided with an installation port (130) connecting the inlet (110) and the outlet (120). A water hammer eliminator (500) is provided in the installation port (130). The water hammer eliminator (500) includes a connector (510), a sleeve (520), and a piston (530). The connector (510) is located in the installation port (130), and the lower end of the sleeve (520) is connected to the connector (510). The connector (510) connects the lower end of the sleeve (520) to the inside of the valve body (100). The upper end of the sleeve (520) is sealed by the end cap (521). The end cap (521) and the inside of the sleeve (520) are sealed by the sealing gasket (540). The piston (530) is slidably disposed inside the sleeve (520). A buffer (550) is provided between the piston (530) and the sealing gasket (540).

8. The angle valve for the washing machine water supply and drainage box (1) according to any one of claims 1-7, characterized in that: A ball core (150) is rotatably disposed inside the valve body (100), and a valve stem (160) is disposed on the ball core (150). The outer end of the valve stem (160) passes through the valve body (100) and is connected to a handle (170). An identification card (600) is detachably connected to the handle (170), and the identification card (600) is used to mark the type of medium inside the valve body (100).

9. The angle valve for the washing machine water supply and drainage box (1) according to claim 8, characterized in that: The handle (170) has a connected mounting groove (171) and mounting hole (172). The mounting hole (172) has a protrusion (1721) on its wall. The mounting groove (171) is filled with the identification card (600). The inner side of the identification card (600) is provided with a locking foot (610). The locking foot (610) has a locking hook (611). After the locking foot (610) is inserted into the mounting hole (172), the locking hook (611) engages with the protrusion (1721) and limits the positioning of the identification card (600).

10. The angle valve for the washing machine water supply and drainage box (1) according to claim 9, characterized in that: The outer wall of the identification card (600) is flush with the outer wall of the handle (170). The handle (170) has a notch (173) on the side near the identification card (600) for inserting tools or user fingernails.

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