Angle valve of rotary washing machine

Abstract

The utility model discloses a rotary type washing machine angle valve which comprises a shell, the shell is provided with a water inlet end, the water inlet end is provided with an inner rotating core body, a rotating connecting sleeve and an outer protection pipe, and the rotating connecting sleeve is rotationally connected and sleeved outside the inner rotating core body. The end part of the first end of the inner rotating core body extends out of the first end of the rotating connecting sleeve, extends into the connecting pipe section and is in threaded connection with the connecting pipe section, and the second end of the rotating connecting sleeve and the inner rotating core body are provided with anti-falling structures; the inner side of the rotating connecting sleeve and the outer side of the inner rotating core body are provided with circumferential rotating positioning structures which enable the rotating connecting sleeve and the inner rotating core body to generate sound and position after relatively rotating by an angle, the rotating connecting sleeve is sleeved with the outer protection pipe, and the first end of the outer protection pipe extends to the connecting pipe section; the outer protective tube is detachably and fixedly connected with the rotary connecting sleeve, and an external thread structure is arranged on the outer side wall of the second end of the outer protective tube; compared with the prior art, the shell can be adjusted to a required angle only by rotating the shell.

Description

Technical Field

[0001] The utility model relates to the field of washing machine installation, in particular to a rotary washing machine angle valve. Background Art

[0002] A washing machine angle valve is a commonly used on-off valve, which plays a dual role of a valve and a connector. When connecting, the water inlet end of the valve body of the washing machine angle valve is connected to the water outlet of the water source outlet pipe reserved on the wall, and the water outlet end of the valve body of the washing machine angle valve is connected to the water inlet pipe of the washing machine. Water flows into the washing machine through the valve body for washing. When in use, the handle drives the valve core in the valve body to rotate, so as to cut off, conduct the water flow and control the water flow rate. The water inlet end of the valve body of the traditional washing machine angle valve is connected to the water source outlet pipe through a threaded connection method. However, during the installation process, if the threaded connection between the water inlet end of the valve body and the water source outlet pipe does not match, it is necessary to install with the cooperation of raw tape to make the washing machine angle valve perpendicular to the wall and stand upright on the wall. Sometimes, winding the raw tape many times still cannot make the water inlet end of the valve body cooperate with the water source outlet pipe, and the operation is time-consuming and laborious. Moreover, the installation location of the washing machine angle valve is often in a corner, and in such an environment, the installation space is complex and narrow. When using threaded connection, it is necessary to rotate the washing machine angle valve or use professional tools for installation, and the narrow space makes it difficult to rotate and install the washing machine angle valve flexibly.

[0003] In view of this, the inventor of this case conducted in-depth research on the problem, and thus this case was born. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotary washing machine angle valve to solve the problems that the existing washing machine angle valve needs to be installed with the cooperation of raw tape, resulting in time-consuming and laborious work and difficult flexible rotation and installation.

[0005] In order to achieve the purpose, the utility model adopts the following technical scheme:

[0006] A rotary washing machine angle valve, comprising a housing which has a water inlet end and a water outlet end. One end of the water inlet end facing away from the water outlet end has an external thread structure for screwing and installation; the water inlet end has a connecting pipe section integrally formed with the water outlet end and a detachable pipe body whose first end is screwed and sleeved on the connecting pipe section. The detachable pipe body has an inner rotating core body, a rotating connecting sleeve and an outer protection pipe. The rotating connecting sleeve is rotatably sleeved outside the inner rotating core body. The first end of the inner rotating core body extends outside the first end of the rotating connecting sleeve into the connecting pipe section and is screwed and connected with the connecting pipe section. A retaining structure for preventing the rotating connecting sleeve from slipping outwards along the second end of the inner rotating core body is provided between the second end of the rotating connecting sleeve and the inner rotating core body. And the second end of the rotating connecting sleeve is in sealing fit with the inner rotating core body. A circumferential rotation positioning structure is provided between the inner side of the rotating connecting sleeve and the outer side of the inner rotating core body, which can make a sound and position after the rotating connecting sleeve and the inner rotating core body rotate relative to each other by a certain angle. The outer protection pipe is sleeved outside the rotating connecting sleeve, and the first end of the outer protection pipe extends to the connecting pipe section. The outer protection pipe is detachably and fixedly connected with the rotating connecting sleeve, and the external thread structure is located on the outer side wall of the second end of the outer protection pipe. The second end of the rotating connecting sleeve is in sealing fit and connection with the outer protection pipe.

[0007] Both the rotating connecting sleeve and the inner rotating core body are hollow structures with both ends open. The inner rotating core body has a reduced-diameter section and an enlarged-diameter section at the first end of the reduced-diameter section. The reduced-diameter section extends into the rotating connecting sleeve, and the enlarged-diameter section is outside the first end of the rotating connecting sleeve. An external convex ring is convexly provided on the outer side wall of the enlarged-diameter section, and the external convex ring is clamped between the connecting pipe section and the rotating connecting sleeve. The enlarged-diameter section is screwed and fitted with the connecting pipe section.

[0008] A limiting groove in a closed annular structure is concavely provided at the end of the reduced-diameter section facing away from the enlarged-diameter section. A fitting groove communicating with the hollow cavity of the rotating connecting sleeve is concavely provided on the outer side wall of the rotating connecting sleeve corresponding to the range of the limiting groove. A limiting block is provided on the rotating connecting sleeve, which is embedded in the fitting groove and extends into the limiting groove. And the limiting block is in an arc structure. The limiting groove, the fitting groove and the limiting block constitute the retaining structure.

[0009] A first sealing groove is concavely provided on the outer side wall of the second end of the reduced-diameter section, and a first sealing ring protruding outside the first sealing groove is embedded in the first sealing groove.

[0010] A first positioning structure is provided on the outer side wall of the reduced-diameter section. A second positioning structure for limiting the inner rotating core body at an angle and aligning with the first positioning structure when the inner rotating core body rotates is provided on the inner side wall of the rotating connecting sleeve. The first positioning structure and the second positioning structure constitute the circumferential rotation positioning structure.

[0011] A positioning sleeve is embedded on the outer side wall of the first end of the reduced-diameter section, and a limiting structure for restricting the circumferential rotation of the positioning sleeve is provided on the reduced-diameter section and the positioning sleeve. A plurality of positioning grooves are concavely provided on one side of the positioning sleeve facing away from the enlarged-diameter section, and the positioning grooves are distributed at intervals and surrounded in the circumferential direction of the positioning sleeve. The positioning grooves are in an arc structure. An elastic reset rod is connected to the inner side wall of the rotating connection sleeve, which is arranged in alignment with one of the positioning grooves and partially extends into the positioning groove. The positioning groove is the first positioning structure, and the elastic reset rod is the second positioning structure.

[0012] The hollow chamber of the rotating connection sleeve has a reduced-diameter chamber and an enlarged-diameter chamber at the first end of the reduced-diameter chamber. The reduced-diameter section is within the range of the reduced-diameter chamber and the enlarged-diameter chamber. A stacking surface is formed between the inner side wall of the reduced-diameter chamber and the inner side wall of the enlarged-diameter chamber. The positioning sleeve is stacked on the stacking surface and is within the range of the enlarged-diameter chamber. A fixing groove for the elastic reset rod to extend into is concavely provided on the stacking surface. One end of the elastic reset rod is connected to the bottom of the fixing groove, and the other end of the elastic reset rod extends out of the fixing groove and into one of the positioning grooves.

[0013] The elastic reset rod has an elastic member and a clamping block. The elastic member is a compression spring. A connecting block protrudes from the bottom of the fixing groove. One end of the elastic spring is embedded on the connecting block, and the other end of the elastic member is fixedly connected to the clamping block. And the end of the clamping block facing the positioning groove is in a conical arc structure.

[0014] An inner positioning hole is concavely provided on the outer side wall of the rotating connection sleeve. A blocking piece for blocking the inner positioning hole is provided on the inner side wall of the rotating connection sleeve at a position corresponding to the inner positioning hole. An outer positioning hole is concavely provided on the outer side wall of the outer protection tube at a position corresponding to the positioning hole. The outer protection tube is connected to the rotating connection sleeve through a hollow bolt, and the hollow bolt is within the range of the outer positioning hole and the inner positioning hole.

[0015] A plurality of second sealing grooves extending in the circumferential direction of the rotating connection sleeve are concavely provided on the outer side wall of the second end of the rotating connection sleeve. A second sealing ring protruding out of the second sealing groove is hermetically fitted in the second sealing groove.

[0016] A rotary washing machine angle valve of the present utility model, during assembly, one end of the inner rotating core body extends into the rotating connection sleeve and makes the inner rotating core body in sealed cooperation with the rotating connection sleeve, and the inner rotating core body cannot be disengaged from the rotating connection sleeve through an anti-disengagement structure, that is, the inner rotating core body and the rotating connection sleeve are installed together, and then the other end of the inner rotating core body is screwed together with the connecting pipe section. The rotating connection sleeve extends into the outer protection pipe and is fixedly and sealingly connected together, that is, the connection between the entire dismountable pipe body and the shell is completed. Finally, the external thread structure of the outer protection pipe is installed. Rotate the shell, and the shell is screwed together with the inner rotating core body, driving the inner rotating core body to rotate. Rotate the shell to the required angle to complete the installation of the entire washing machine angle valve. Compared with the prior art, only the outer protection pipe needs to be screwed and installed through the external thread structure, and the installation is simple and convenient, saving time and effort. Rotate the shell, and the shell can drive the inner rotating core body to rotate through the circumferential rotation positioning structure so that the shell is at the required angle. There is no need to cooperate with raw material tape for installation. Even when adjusting the angle of the washing machine angle valve in a position with a narrow installation space, only rotate the shell to the required angle. The operation is simple and convenient, and it is relatively flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic assembly structure diagram of the present utility model.

[0018] Figure 2 It is a schematic structure diagram of the rotating connection sleeve of the present utility model.

[0019] Figure 3 It is a schematic structure diagram of the inner rotating core body of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to further explain the technical solution of the present utility model, it will be elaborated in detail below with reference to the drawings.

[0021] A rotary washing machine angle valve, as Figures 1-3 shown, includes a shell, the shell has a water inlet end and a water outlet end, and the end of the water inlet end facing away from the water outlet end has an external thread structure for screwing and installing. During application, a water source outlet pipe is reserved on the wall, and the shell is screwed on the water source outlet pipe through the external thread structure.

[0022] The water inlet end has a connecting pipe section 1 integrally formed with the water outlet end and a detachable pipe body whose first end is screwed and sleeved on the connecting pipe section 1. The detachable pipe body has an inner rotating core 2, a rotating connecting sleeve 3, and an outer protective pipe 4. The rotating connecting sleeve 3 is rotatably sleeved outside the inner rotating core 2. The first end of the inner rotating core 2 extends outside the first end of the rotating connecting sleeve 3 into the connecting pipe section 1 and is screwed and connected to the connecting pipe section 1. Specifically, both the rotating connecting sleeve 3 and the inner rotating core 2 are hollow structures with open ends at both ends. The inner rotating core 2 has a reduced-diameter section 21 and an enlarged-diameter section 22 at the first end of the reduced-diameter section 21. The reduced-diameter section 21 extends into the rotating connecting sleeve 3, and the enlarged-diameter section 22 is outside the first end of the rotating connecting sleeve 3. An outer convex ring 221 is convexly provided on the outer side wall of the enlarged-diameter section 22. The outer convex ring 221 is clamped between the connecting pipe section 1 and the rotating connecting sleeve 3. That is, a stepped surface 100 pressed against the first end face of the rotating connecting sleeve 3 is formed between the outer convex ring 221 and the reduced-diameter section 21, and a stepped plane 200 pressed against the end face of the connecting pipe section is formed between the outer convex ring 221 and the enlarged-diameter section 22. The enlarged-diameter section 22 is screwed and fitted with the connecting pipe section 1. That is, a first external thread is provided on the outer side wall of the enlarged-diameter section 22, and a first internal thread is provided on the inner side wall of the connecting pipe section 1. During application, the enlarged-diameter section 22 is aligned with the connecting pipe section 1. Under the cooperation of the first external thread and the first internal thread, the end of the enlarged-diameter section 22 is screwed into the connecting pipe section 1.

[0023] A anti-disengagement structure for preventing the rotating connecting sleeve 3 from disengaging outward along the second end of the inner rotating core 2 is provided at the second end of the rotating connecting sleeve 3 and on the inner rotating core 2. Specifically, a limiting groove 200 in a closed-ring structure is concavely provided at the end of the reduced-diameter section 21 facing away from the enlarged-diameter section 22. A fitting groove 300 communicating with the hollow chamber of the rotating connecting sleeve 3 is concavely provided on the outer side wall of the rotating connecting sleeve 3 within the range corresponding to the limiting groove 200. A limiting block (not shown in the figure) is provided on the rotating connecting sleeve 3 and is embedded in the fitting groove 300 and partially extends into the limiting groove 200. The limiting block is in an arc structure, and the outer diameter of the limiting block is less than or equal to the outer diameter of the rotating connecting sleeve 3. The limiting groove 200, the fitting groove 300, and the limiting block constitute the anti-disengagement structure. During application, the reduced-diameter section 21 of the inner rotating core 2 is extended into the rotating connecting sleeve 3, and the limiting groove on the reduced-diameter section 21 is arranged in alignment with the fitting groove on the rotating connecting sleeve 3. Then the limiting block is aligned with the fitting groove 300. The limiting block enters the fitting groove 300 and the inner end of the limiting block falls within the range of the limiting groove 200. At this time, the outer side wall of the limiting block is smoothly connected to the outer side wall of the rotating connecting sleeve 3. That is, even if the limiting block is partially stuck in the limiting groove 200, the reduced-diameter section 21 can rotate circumferentially while being unable to disengage from the rotating connecting sleeve 3.

[0024] The second end of the rotating connection sleeve 3 is in sealed cooperation with the inner rotating core 2; specifically, a first sealing groove is recessed on the outer side wall of the second end of the reduced-diameter section 21 of the inner rotating core 2. The first sealing groove is located between the enlarged-diameter section and the limiting block, and a first sealing ring 211 protruding outside the first sealing groove is embedded in the first sealing groove. During application, when the reduced-diameter section 21 extends into the rotating connection sleeve 3, through the cooperation of the first sealing groove and the first sealing ring 211, the outer side wall of the reduced-diameter section 21 is in sealed cooperation with the inner side wall of the rotating connection sleeve 3, so that when there is water flowing through the reduced-diameter section 21, it will not enter the rotating connection sleeve 3.

[0025] On the inner side of the rotating connection sleeve 3 and the outer side of the inner rotating core 2, there is a circumferential rotation positioning structure that makes a sound and positions after the rotating connection sleeve 3 and the inner rotating core 2 rotate relative to each other by a certain angle. That is, a first positioning structure is provided on the outer wall of the reduced-diameter section 21, and a second positioning structure is provided on the inner wall of the rotating connection sleeve 3 to limit the inner rotating core to a certain angle and align with the first positioning structure when the inner rotating core rotates. The first positioning structure and the second positioning structure constitute the circumferential rotation positioning structure. Specifically, a positioning sleeve 5 is embedded on the outer wall of the first end of the reduced-diameter section 21, and the reduced-diameter section 21 and the positioning sleeve 5 are provided with a limiting structure (not shown in the figure) that restricts the circumferential rotation of the positioning sleeve 5. That is, a convex block with a polygonal structure protrudes on the outer wall of the end of the reduced-diameter section 21 facing the enlarged-diameter section 22, and a polygonal groove matching the convex block is recessed on the side of the positioning sleeve facing the enlarged-diameter section 22. For example, if the convex block is a pentagonal block, the polygonal groove is a pentagonal groove matching the pentagonal block. The convex block and the polygonal groove constitute the limiting structure. On the side of the positioning sleeve 5 facing away from the enlarged-diameter section 22, a plurality of positioning grooves 400 are recessed and evenly spaced around the circumferential direction of the positioning sleeve 5. The positioning grooves 400 are in an arc structure. An elastic reset rod 6 is connected to the inner wall of the rotating connection sleeve 3 and is arranged opposite to one of the positioning grooves 400 and partially extends into the positioning groove 400. The positioning groove 400 is the first positioning structure, and the elastic reset rod 6 is the second positioning structure. That is, the rotating connection sleeve 3 is an injection-molded sleeve integrally formed. The hollow cavity of the rotating connection sleeve 3 has a reduced-diameter cavity and an enlarged-diameter cavity (not shown in the figure) at the first end of the reduced-diameter cavity. The reduced-diameter section 21 is within the range of the reduced-diameter cavity and the enlarged-diameter cavity. A laminated surface 500 is formed between the inner wall of the reduced-diameter cavity and the inner wall of the enlarged-diameter cavity. The positioning sleeve 5 is laminated on the laminated surface 500 and is within the range of the enlarged-diameter cavity. A fixing groove 600 for the elastic reset rod 6 to extend into is recessed on the laminated surface 500. One end of the elastic reset rod 6 is connected to the bottom of the fixing groove 600, and the other end of the elastic reset rod 6 extends out of the fixing groove 600 and extends into one of the positioning grooves 400. That is, the elastic reset rod 6 has an elastic member 61 and a clamping block 62. The elastic member 61 is a compression spring. A connecting block (not shown in the figure) protrudes from the bottom of the fixing groove 600. One end of the elastic spring is embedded on the connecting block, and the other end of the elastic member 61 is fixedly connected to the clamping block 62. That is, one end of the clamping block is clamped on the elastic spring, and the other end of the clamping block extends out of the elastic spring and is within one of the positioning grooves 400, and the end of the clamping block 62 facing the positioning groove 400 is in a tapered arc structure;During application, the clamping block is clamped on the elastic spring in advance, and the elastic spring is inserted into the fixing groove 600 and clamped on the connecting block. When the reduced-diameter section 21 of the inner rotating core 2 is inserted into the rotating connecting sleeve 3, the clamping block is aligned with a certain outer groove 400. Rotate the inner rotating core 2, and under the action of the compression spring, the clamping block moves along the circumferential direction of the positioning sleeve 5 and enters the next positioning groove 400. Rotate the inner rotating core 2 to the required angle. At the same time, under the action of the compression spring, when the clamping block enters from one positioning groove 400 into another positioning groove, a "click" sound will be emitted; furthermore, the conical arc structure of the clamping block 62 cooperates with the arc structure of the positioning groove, and when the clamping block rotates, the clamping block can more easily enter another positioning groove 400 and be positioned.

[0026] The outer protection tube 4 is sleeved outside the rotating connecting sleeve 3, and the first end of the outer protection tube 4 extends to the connecting pipe section 1. The outer protection tube 4 is detachably and fixedly connected to the rotating connecting sleeve 3, and the external thread structure is on the outer side wall of the second end of the outer protection tube 4; specifically, an inner positioning hole (not shown in the figure) is recessed on the outer side wall of the rotating connecting sleeve 3, and a blocking piece 31 for blocking the inner positioning hole is provided at the position corresponding to the inner positioning hole on the inner side wall of the rotating connecting sleeve 3. The outer protection tube 4 is a stainless steel tube, and an outer positioning hole 700 is recessed on the outer side wall of the outer protection tube 4 at the position corresponding to the positioning hole. The outer protection tube 4 is connected to the rotating connecting sleeve 3 through a hollow bolt, and the hollow bolt is within the range of the outer positioning hole 700 and the inner positioning hole. And a second external thread is provided on the outer side wall of the end of the outer protection tube 4 facing away from the connecting pipe section 1, and the second external thread is the above-mentioned external thread structure; during application, the outer protection tube 4 is screwed to the rotating connecting sleeve 3 through the inner and outer positioning holes 700, inner positioning and the hollow bolt. The outer protection tube 4 is screwed to the water source outlet pipe reserved on the wall through the second external thread. At this time, the inner rotating core 2 and the rotating connecting sleeve 3 are both inside the outer protection tube 4, and a part of the connecting pipe section 1 is within the range of one end of the outer protection tube 4. Since the outer protection tube 4 is connected to the rotating connecting sleeve 3, it can enable the inner rotating core to rotate circumferentially along the outer protection tube 4 and the rotating connecting sleeve 3, and at the same time, the outer protection tube 4 plays a protective role for the rotating connecting sleeve 3 and the inner rotating core 2; furthermore, the setting of the blocking piece 31 of the inner positioning hole can prevent moisture from entering the inner positioning hole, thereby protecting the hollow bolt.

[0027] The second end of the rotating connecting sleeve 3 is in sealed and mating connection with the outer protection tube 4; specifically, a plurality of second sealing grooves extending along the circumferential direction of the rotating connecting sleeve 3 are recessed on the outer side wall of the second end of the rotating connecting sleeve 3, and a second sealing ring protruding outside the second sealing groove is in sealed mating in the second sealing groove; during application, when the rotating connecting tube 3 extends into the outer protection tube 4, under the action of the second sealing groove and the second sealing ring, a sealed connection is formed between the outer side wall of the rotating connecting tube 3 and the inner side wall of the outer protection tube 4.

[0028] For the angle valve of a rotary washing machine of the present utility model, during assembly, first, the elastic reset rod 6 is inserted into the fixing groove 600 and fitted on the connecting block, the positioning sleeve is sleeved on the outer side wall of the inner rotating core 2, the first sealing groove of the inner rotating core 2 is sleeved with the first sealing ring, the reduced-diameter section 21 of the inner rotating core 2 extends into the rotating connecting sleeve 3, the stepped surface on the enlarged-diameter section 22 is stacked on the first end face of the rotating connecting sleeve 3, the positioning sleeve is stacked on the stacked surface, and the limiting block is inserted into the fitting groove 300 and the limiting groove 200 of the rotating connecting sleeve 3, so that the inner rotating core 2 cannot be laterally removed from the rotating connecting sleeve 3, that is, the inner rotating core 2 and the rotating connecting sleeve are installed together. At this time, one end of the elastic reset rod 6 facing the reduced-diameter section falls into a certain positioning groove 400 on the reduced-diameter section 21. Then, the enlarged-diameter section 22 and the connecting pipe section 1 are screwed together through the cooperation of the first external thread and the first internal thread. The second sealing ring is sleeved on the second sealing groove of the rotating connecting sleeve 3. The rotating connecting sleeve 3 extends into the outer protection tube 4 and the inner positioning hole on the rotating connecting sleeve 3 and the outer positioning hole 700 on the outer protection tube 4 are arranged in alignment. The hollow bolt extends into the inner positioning hole and the outer positioning hole and is screwed, thus completing the connection between the entire dismountable pipe body and the housing. Finally, the external thread structure of the outer protection tube 4 is screwed with the water source outlet pipe, the housing is rotated, and the housing is screwed with the inner rotating core, driving the inner rotating core to rotate. The clamping block 62 of the elastic reset rod 6 moves circumferentially along the positioning groove on the positioning sleeve and enters from one positioning groove into another positioning groove. Rotating the housing to the required angle completes the installation of the entire washing machine angle valve; compared with the prior art, only the outer protection tube 4 needs to be screwed and installed through the external thread structure, the installation is simple and convenient, time-saving and labor-saving. Rotating the housing, the housing can drive the inner rotating core to rotate through the circumferential rotation positioning structure so that the housing is at the required angle, and there is no need to cooperate with raw material tape for installation. Even when adjusting the angle of the washing machine angle valve in a position with a narrow installation space, only the housing needs to be rotated to the required angle, the operation is simple and convenient, and the use is relatively flexible.

[0029] The product form of the present utility model is not limited to the illustrations and embodiments of this case. Any person making appropriate changes or modifications with a similar idea should be regarded as not departing from the patent scope of the present utility model.

Claims

1. A rotary washing machine angle valve, comprising a housing, the housing having a water inlet end and a water outlet end, the end of the water inlet end facing away from the water outlet end having an external thread structure for screwing installation; characterized in that: The cam is configured to connect the first and second ends of the cams to the outer ends of the cams, and the cams are configured to connect the first and second ends of the cams to the outer ends of the cams, wherein the cams are configured to connect the first and second ends of the cams to the outer ends of the cams.

2. A rotary washing machine angle valve according to claim 1, characterized in that: The rotating connecting sleeve and the inner rotating core are both hollow structures with both ends open. The inner rotating core has a reduced diameter section and an expanded diameter section on the first end of the reduced diameter section. The reduced diameter section extends into the rotating connecting sleeve, and the expanded diameter section is outside the first end of the rotating connecting sleeve. An outer convex ring is convexly provided on the outer side wall of the expanded diameter section. The outer convex ring is clamped between the connecting pipe section and the rotating connecting sleeve, and the expanded diameter section is threadedly fitted with the connecting pipe section.

3. A rotary washing machine angle valve according to claim 2, characterized in that: A limiting groove in a closed ring structure is recessed on one end of the reduced diameter section facing away from the expanded diameter section, and an embedding groove communicating with the hollow chamber of the rotating connecting sleeve is recessed on the outer wall of the rotating connecting sleeve within the range corresponding to the limiting groove. A limiting block is provided on the rotating connecting sleeve, which is embedded in the embedding groove and extends into the limiting groove, and the limiting block is in an arc-shaped structure. The limiting groove, the embedding groove and the limiting block constitute the anti-slip structure.

4. A rotary washing machine angle valve according to claim 2, characterized in that: A first sealing groove is concavely formed on the outer side wall of the second end of the diameter-reducing section, and a first sealing ring protruding out of the first sealing groove is embedded in the first sealing groove.

5. A rotary washing machine angle valve according to claim 2, characterized in that: A first positioning structure is provided on the outer wall of the reduced diameter section, and a second positioning structure is provided on the inner wall of the rotating connecting sleeve to limit the inner rotating core at an angle and relative to the first positioning structure when the inner rotating core rotates. The first positioning structure and the second positioning structure constitute the circumferential rotation positioning structure.

6. A rotary washing machine angle valve according to claim 5, characterized in that: A positioning sleeve is embedded on the outer wall of the first end of the reduced diameter section, and the reduced diameter section and the positioning sleeve are provided with a limiting structure for limiting the circumferential rotation of the positioning sleeve. A plurality of positioning grooves are recessed on the side of the positioning sleeve facing away from the expanded diameter section and are distributed around the circumferential direction of the positioning sleeve at intervals, and the positioning grooves are arc-shaped structures. An elastic reset rod is connected to the inner side wall of the rotating connecting sleeve, which is arranged in alignment with one of the positioning grooves and partially extends into the positioning groove. The positioning groove is the first positioning structure, and the elastic reset rod is the second positioning structure.

7. A rotary washing machine angle valve according to claim 6, characterized in that: The hollow chamber of the rotating connecting sleeve comprises a reduced diameter chamber and an expanded diameter chamber located on the first end of the reduced diameter chamber, the reduced diameter section is within the range of the reduced diameter chamber and the expanded diameter chamber, a superimposed surface is formed between the inner side wall of the reduced diameter chamber and the inner side wall of the expanded diameter chamber, the positioning sleeve is superimposed on the superimposed surface and is within the range of the expanded diameter chamber, a fixing groove is recessed on the superimposed surface for the elastic reset rod to extend into, one end of the elastic reset rod is connected to the bottom of the fixing groove, and the other end of the elastic reset rod extends out of the fixing groove and extends into one of the positioning grooves.

8. A rotary washing machine angle valve according to claim 7, characterized in that: The elastic reset rod has an elastic part and a clamping block. The elastic part is a compression spring. A connecting block is convexly provided at the bottom of the fixed groove. One end of the elastic spring is embedded in the connecting block. The other end of the elastic part is fixedly connected to the clamping block, and the end of the clamping block facing the positioning groove is a conical arc structure.

9. A rotary washing machine angle valve according to claim 7, characterized in that: An inner positioning hole is recessed on the outer wall of the rotating connecting sleeve, a sealing piece for sealing the inner positioning hole is provided on the inner wall of the rotating connecting sleeve at a position corresponding to the inner positioning hole, an outer positioning hole is recessed on the outer wall of the outer protective tube at a position corresponding to the positioning hole, the outer protective tube is connected to the rotating connecting sleeve through a hollow bolt, and the hollow bolt is within the range of the outer positioning hole and the inner positioning hole.

10. A rotary washing machine angle valve according to claim 7, characterized in that: A plurality of second sealing grooves extending along the circumferential direction of the rotating connecting sleeve are recessed on the outer side wall of the second end of the rotating connecting sleeve, and a second sealing ring protruding out of the second sealing groove is sealingly fitted in the second sealing groove.

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