dispensing mechanism

Abstract

The application provides a dispensing mechanism, and relates to the technical field of washing. The dispensing mechanism comprises a main body and a valve body, the main body is provided with a first cavity, a first channel, a second cavity, a second channel, a third cavity and a third channel which are sequentially communicated, the valve body is configured to move between a first position and a second position of the main body and selectively seal the first channel and the second channel, the third cavity is further communicated with a fourth channel, and the dispensing mechanism has a first state and a second state, in the first state, the fourth channel is lower than the third channel, and at least part of the third cavity is lower than the fourth channel, in the second state, the fourth channel is higher than the third channel, and the medium in the third cavity can be discharged through the third channel. In the dispensing mechanism provided by the application, the combination of the position change of the channels in the two states and the action of the valve body can accurately control the flow paths of the washing substances in different stages, realize multi-stage dispensing control, and improve the accuracy of the detergent dispensing and the stability of the equipment operation.

Description

Technical Field

[0001] This application relates to the field of washing equipment technology, specifically to a dispensing mechanism. Background Technology

[0002] Detergent dispensers are increasingly used in laundry equipment. Their function is to deliver detergent to the washing area within a set time to complete the subsequent washing process. In related designs, different detergents are dispensed at different times. How to prevent leakage of other detergents during the dispensing process of the appropriate detergent is an urgent problem to be solved. Utility Model Content

[0003] This application provides a dispensing mechanism that can prevent leakage of other detergents during the dispensing of the corresponding detergent.

[0004] In some embodiments, the dispensing mechanism includes a body and a valve body. The body has a first cavity, a first channel, a second cavity, a second channel, a third cavity, and a third channel that are sequentially connected. The valve body is configured to reciprocate between a first position and a second position of the body. When the valve body is in the first position, the valve body seals the first channel to isolate the first cavity from the second cavity. When the valve body is in the second position, the valve body opens the first channel and seals the second channel to communicate between the first cavity and the second cavity, and isolates the second cavity from the third cavity.

[0005] The third cavity is also connected to a fourth channel. The dispensing mechanism has a first state and a second state. In the first state, the fourth channel is lower than the third channel, and at least part of the third cavity is lower than the fourth channel so that the third cavity can collect the medium flowing out of the second cavity after the valve body moves back and forth for the first time. In the second state, the fourth channel is higher than the third channel, and the medium in the third cavity can be discharged through the third channel.

[0006] In some embodiments, the main body further includes a fourth cavity, which is connected to the third channel so that the medium in the third cavity can enter the fourth cavity through the third channel.

[0007] In some embodiments, a backflow prevention structure is provided between the fourth cavity and the third cavity to prevent the medium in the fourth cavity from flowing back into the third cavity.

[0008] In some embodiments, the main body is further provided with a fifth cavity and a fifth channel, and the third cavity, the third channel, the fifth cavity, the fifth channel and the fourth cavity are connected in sequence. In the first state, the third channel is higher than the fifth channel.

[0009] In some embodiments, the anti-reverse structure includes an anti-reverse ball disposed in the fifth cavity. In the first state, the anti-reverse ball opens the fifth channel; in the second state, the anti-reverse ball blocks the fifth channel.

[0010] In some embodiments, the valve body includes a first sealing portion and a second sealing portion disposed between the first channel and the second channel. When the valve body is in the first position, the first sealing portion is embedded in the first channel, and when the valve body is in the second position, the second sealing portion covers the end of the second channel.

[0011] In some embodiments, the first channel and the second channel are coaxially arranged, and the valve body moves between the first position and the second position along the axial direction of the first channel.

[0012] In some embodiments, the main body is provided with a receiving slot for containing washing materials, and the dispensing mechanism further includes a cover and a linkage component. The cover is movably connected to the main body so that the cover can open or cover the receiving slot. The linkage component is disposed on the main body, and the cover and the valve body are respectively connected to the linkage component. When the valve body moves to the second position, the linkage component drives the cover to open the receiving slot.

[0013] In some embodiments, the linkage component includes a retainer configured to move between a third position and a fourth position of the body;

[0014] When the retainer is in the third position, the retainer can interfere with the cover to keep the cover in a state of covering the receiving groove;

[0015] When the retainer is in the fourth position, the cover and the retainer are disengaged so that the cover can open the receiving groove;

[0016] The retainer is linked to the valve body, and during the process of the valve body moving from the first position to the second position, the retainer moves from the third position to the fourth position.

[0017] In some embodiments, the linkage component further includes:

[0018] A first elastic element is disposed between the cover and the main body. The first elastic element is used to drive the cover to open the receiving groove after the interference with the retaining member is released.

[0019] The second elastic element is disposed between the retainer and the main body. When the valve body moves from the second position to the first position, the retainer is reset from the fourth position to the third position and held in the third position under the action of the second elastic element.

[0020] The washing substance provided in this embodiment is discharged through the third channel, thereby emptying the third cavity.

[0021] The dispensing mechanism provided in this application, by setting two states of channel position changes and valve body action combinations, can precisely control the flow path of detergent material at different stages, achieving multi-level dispensing control and improving the accuracy of detergent dispensing and the stability of equipment operation. Specifically, in the first state, the third chamber temporarily stores the detergent material during the first reciprocating motion of the valve body, preventing premature leakage of the detergent material in the first chamber; by changing the relative positions of the third and fourth channels in the first and second states, the orderly discharge of detergent material in the third chamber is achieved. This effectively avoids mixing and contamination of multi-component detergents during dispensing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the distribution mechanism from one perspective in some embodiments of this application;

[0024] Figure 2 yes Figure 1 A schematic cross-sectional view of the distribution mechanism at point AA in the first state in the embodiment;

[0025] Figure 3 yes Figure 1 A schematic cross-sectional view of the dispensing mechanism at point AA in the second state in the embodiment;

[0026] Figure 4 yes Figure 1 A schematic cross-sectional view of the distribution mechanism at BB in the first state in the embodiment;

[0027] Figure 5 yes Figure 1 A cross-sectional view of the distribution mechanism at CC in the embodiment;

[0028] Figure 6 yes Figure 1 A schematic diagram of the valve body in the distribution mechanism in the embodiment;

[0029] Figure 7 yes Figure 1 A partial structural diagram of the distribution mechanism in the embodiment;

[0030] Figure 8 yes Figure 1 A schematic diagram of the distribution mechanism from another perspective in the embodiment.

[0031] In the above attached figures:

[0032] 10. Main body; 11. First partition; 12. Second partition; 13. Front shell; 14. Rear shell; 101. First cavity; 102. Second cavity; 103. Third cavity; 104. Fourth cavity; 105. Fifth cavity; 106. First channel; 107. Second channel; 108. Third channel; 109. Fourth channel; 110. Fifth channel; 111. Receiving groove;

[0033] 20. Valve body; 21. First sealing part; 22. Second sealing part;

[0034] 30. Reverse-stopping structure; 31. Reverse-stopping ball;

[0035] 40. Cover;

[0036] 50. Linkage component; 51. Holding component; 52. First elastic component; 53. Second elastic component. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0038] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the distribution mechanism from one perspective in some embodiments of this application. Figure 2 yes Figure 1 A schematic cross-sectional view of the distribution mechanism at point AA in the first state in the embodiment. Figure 3 yes Figure 1 A schematic cross-sectional view of the distribution mechanism at point AA in the second state in the embodiment.

[0041] This application provides a dispensing mechanism suitable for washing equipment such as dishwashers, and configured to be installed on the wall of a corresponding washing tub. For example, in a dishwasher, the dishwasher door is pivotally connected to the machine body via a horizontal pivot to open and close the inner cavity. The wall of the washing tub may be defined by a structure disposed on the inner side of the door; the dispensing mechanism is fixed to this inner side of the door. During door rotation, the dispensing mechanism undergoes a posture change, resulting in a first state and a second state. In the first state, the dispensing mechanism is vertically positioned, and in the second state, the dispensing mechanism is horizontally positioned. The dispensing mechanism includes a main body 10 and a valve body 20.

[0042] Please combine Figure 4 , Figure 4 yes Figure 1 The embodiment shows a cross-sectional view of the dispensing mechanism at point BB in the first state. The main body 10 includes a first cavity 101, a first channel 106, a second cavity 102, a second channel 107, a third cavity 103, and a third channel 108, all connected sequentially. The first cavity 101, the second cavity 102, and the third cavity 103 can all contain washing substances, including but not limited to liquid rinse aid. The washing substances are pre-stored in the first cavity 101.

[0043] The main body 10 includes a front shell 13 and a rear shell 14, which together form various cavities. The front shell 13 and the rear shell 14 can be made of metal or plastic. The cavities and channels are formed by machining or injection molding. The cross-sectional shapes of the first channel 106, the second channel 107, and the third channel 108 can be circular, rectangular, or irregular.

[0044] The valve body 20 is configured to reciprocate between a first position and a second position of the main body 10. When the valve body 20 is in the first position, it seals the first channel 106 to isolate the first cavity 101 from the second cavity 102. When the valve body 20 is in the second position, it opens the first channel 106 and seals the second channel 107 to connect the first cavity 101 with the second cavity 102, while isolating the second cavity 102 from the third cavity 103. That is, when the valve body 20 is in the second position, the washing material in the first cavity 101 can enter the second cavity 102 through the first connecting hole. When the valve body 20 moves from the second position to the first position, the first cavity 101 stops supplying washing material to the second cavity 102, and simultaneously, the washing material in the second cavity 102 enters the third cavity 103 through the second channel 107. It is understood that the second chamber 102 can control the volume of the washing material delivered to the third chamber 103, thereby controlling the valve body 20 to move back and forth between the first position and the second position, so that the washing material can be quantitatively delivered to the third chamber 103.

[0045] Please see Figure 4 and Figure 5 , Figure 5 yes Figure 1 A cross-sectional view of the dispensing mechanism CC in the embodiment. The third cavity 103 is also connected to a fourth channel 109, through which the washing material in the third cavity 103 can flow out of the third cavity 103 along different paths via the third channel 108 or the fourth channel 109.

[0046] In the first state, the fourth channel 109 is lower than the third channel 108, and at least a portion of the third cavity 103 is lower than the fourth channel 109. It is important to note that the volume of the third cavity 103 below the fourth channel 109 is greater than or equal to the volume of the second cavity 102. The fact that at least a portion of the third cavity 103 is lower than the fourth channel 109 allows the third cavity 103 to collect the medium flowing out of the second cavity 102 after the valve body 20's first reciprocating movement; that is, some of the washing material entering the third cavity 103 can remain in the third cavity 103 under gravity. Thus, in the first state, when the washing material in the second cavity 102 is first transported to the third cavity 103, the third cavity 103 can temporarily store the washing material. When the washing material in the second cavity 102 is transported to the third cavity 103 for the second time, the washing material in the third cavity 103 preferentially overflows from the fourth channel 109 and is transported into the dishwasher's inner cavity.

[0047] In the second state, the fourth channel 109 is higher than the third channel 108, and the medium in the third cavity 103 can be discharged through the third channel 108. Optionally, when the dispensing mechanism is in the second state, the third channel 108 is located at the bottom of the third cavity 103, so that the washing material in the third cavity 103 can be discharged along the third channel 108 under the action of gravity, thereby emptying the third cavity 103.

[0048] Please see Figure 2 and Figure 4 In some embodiments, the main body 10 is provided with a receiving tank 111 for holding detergent, and the dispensing mechanism further includes a cover 40 and a linkage assembly 50. The receiving tank 111 is used to pre-store detergent, and the detergent pre-stored in the receiving tank 111 can be the same type of detergent or a different type of detergent than the detergent pre-stored in the first cavity 101. For example, the receiving tank 111 can store detergent such as dish soap tablets or dish soap powder, while the first cavity 101 can store rinse aid. The detergent in the receiving tank 111 needs to be added before the detergent in the first cavity 101.

[0049] The cover 40 is movably connected to the main body 10 so that the cover 40 can be opened or cover the receiving groove 111. The cover 40 can be slidably or rotatably connected to the main body 10, as long as it can realize the opening and closing of the receiving groove 111; this application embodiment does not make specific limitations. For example, the cover 40 can be along... Figure 2 The Y-direction shown slides on the main body 10.

[0050] A linkage component 50 is mounted on the main body 10. The cover 40 and valve body 20 are respectively connected to the linkage component 50. When the valve body 20 moves to the second position, the linkage component 50 drives the cover 40 to open the receiving slot 111. After the receiving slot 111 is opened, the detergent in the receiving slot 111 can be transported into the inner cavity of the dishwasher, realizing the dispensing of detergent in the receiving slot 111. By linking the valve body 20 and the cover 40 through the linkage component 50, no additional driving component is needed to make the valve body 20 and the cover 40 perform corresponding actions to realize the dispensing of detergent in the first cavity 101 and the receiving slot 111.

[0051] The specific process for dispensing detergent substances using the distribution mechanism provided in this application embodiment is as follows:

[0052] S10. Open the dishwasher door to allow the dispensing mechanism to rotate to the second state, and place the washing materials into the receiving slot 111 and the first cavity 101 respectively.

[0053] S20. Close the dishwasher door and keep the dispensing mechanism in the first state, and drive the valve body 20 to move from the first position to the second position. The cover 40 opens the receiving slot 111 under the action of the valve body 20, completing the dispensing of washing materials in the receiving slot 111. At the same time, part of the washing materials in the first cavity 101 enters the second cavity 102 through the first channel 106.

[0054] S30, the drive valve body 20 moves from the second position to the first position, and the washing material in the second chamber 102 is transported to the third chamber 103 through the second channel 107 and temporarily stored in the third chamber 103;

[0055] S40, drive the valve body 20 again to move from the first position to the second position, and then back to the first position, so that the remaining washing material in the first cavity 101 is further transported to the third cavity 103. At the same time, part of the washing material in the third cavity 103 is transported to the inner cavity of the dishwasher through the fourth channel 109, thus completing the addition of washing material in the first cavity 101.

[0056] S50. Following step S40, the valve body 20 is made to reciprocate between the first position and the second position until the number of dispensing attempts is exhausted.

[0057] S60. Open the dishwasher door to move the dispensing mechanism to the first state. The detergent residue in the third cavity 103 is discharged through the third channel 108, thereby emptying the third cavity 103.

[0058] Please see Figure 4The dispensing mechanism provided in this application, by setting two states of channel position changes and valve body 20 action combinations, can precisely control the flow path of detergent material at different stages, realize multi-level dispensing control, and improve the accuracy of detergent dispensing and the stability of equipment operation. Specifically, in the first state, the third chamber 103 temporarily stores the detergent material when the valve body 20 makes its first reciprocating motion, preventing premature leakage of the detergent material in the first chamber 101; by changing the relative positions of the third channel 108 and the fourth channel 109 in the first and second states, the orderly discharge of detergent material in the third chamber 103 is achieved. This effectively avoids mixing and contamination of multi-component detergents during dispensing.

[0059] Please see Figure 4 and Figure 5 In some embodiments, the main body 10 is further provided with a fourth cavity 104, which is connected to the third channel 108 so that the medium in the third cavity 103 can enter the fourth cavity 104 through the third channel 108. That is, when the dishwasher door is opened after the dishwasher has finished washing, the residual detergent in the third cavity 103 enters the fourth cavity 104 through the third channel 108, which is beneficial for the recovery of detergent in the third cavity 103.

[0060] To prevent the washing materials in the fourth cavity 104 from flowing back into the third cavity 103 when the dishwasher door is opened, i.e., when the dispensing mechanism is in the second state, a backflow prevention structure 30 is provided between the fourth cavity 104 and the third cavity 103. The backflow prevention structure 30 is used to prevent the medium in the fourth cavity 104 from flowing back into the third cavity 103.

[0061] Optionally, the check valve 30 can be a one-way valve provided on the third channel 108.

[0062] Optionally, the main body 10 is further provided with a fifth cavity 105 and a fifth channel 110. The third cavity 103, the third channel 108, the fifth cavity 105, the fifth channel 110 and the fourth cavity 104 are connected in sequence. In the first state, the third channel 108 is higher than the fifth channel 110.

[0063] By providing a fifth cavity 105 and a fifth channel 110 between the third cavity 103 and the fourth cavity 104, the path for the washing material in the third cavity 103 to enter the fourth cavity 104 can be extended. Furthermore, the fifth cavity 105 can serve as a temporary cavity, allowing residual washing material in the third cavity 103 to be temporarily stored, or allowing washed material recovered in the fourth cavity 104 to be temporarily stored, when the dispensing mechanism switches from the first state to the second state. When the dispensing mechanism returns from the second state to the first state, the temporarily stored washing material in the fifth cavity 105 can enter the fourth cavity 104 through the fifth channel 110 under the influence of gravity.

[0064] Furthermore, in the second state, the third channel 108 is lower than the fifth channel 110. In this way, the backflow of washing material in the fourth chamber 104 into the fifth chamber 105 in the second state can be reduced.

[0065] Please see Figure 4 In some embodiments, the anti-reverse structure 30 includes an anti-reverse ball 31 disposed in the fifth cavity 105. In a first state, the anti-reverse ball 31 opens the fifth channel 110; in a second state, the anti-reverse ball 31 blocks the fifth channel 110.

[0066] The check ball 31 can be made of stainless steel or ceramic, and its diameter must match the diameter of the fifth channel 110. In the first state, the check ball 31 can detach from the fifth channel 110 under gravity, making the fifth channel 110 conductive. In the second state, the check ball 31 falls back to the port of the fifth channel 110 by its own weight or spring force, forming a contact surface with the fifth channel 110 to achieve a seal, preventing washing substances in the fourth chamber 104 from entering the fifth chamber 105. The fifth channel 110 can be designed as a cylindrical or conical structure. The contact surface between the check ball 31 and the fifth channel 110 can be polished to improve sealing performance.

[0067] Please see Figure 4 and Figure 6 , Figure 6 yes Figure 1 A schematic diagram of the valve body in the dispensing mechanism in the embodiment. In some embodiments, the valve body 20 includes a first sealing part 21 and a second sealing part 22, which are disposed between the first channel 106 and the second channel 107. When the valve body 20 is in the first position, the first sealing part 21 is embedded in the first channel 106, and when the valve body 20 is in the second position, the second sealing part 22 covers the end of the second channel 107.

[0068] The first sealing part 21 and the second sealing part 22 are key structures for blocking or opening fluid channels. They can be made of elastic materials such as rubber, silicone, or polyurethane, or they can be made of metal with surface treatment to achieve a sealing effect. When the valve body 20 is in the first position, the first sealing part 21 is mechanically inserted into the first channel 106 to form a seal. In specific implementations, the first sealing part 21 and the second sealing part 22 can be connected to form an umbrella shape.

[0069] By setting the first sealing part 21 and the second sealing part 22 and coordinating the position switching of the valve body 20, it is possible to quantitatively dispense the detergent in the first cavity 101, and effectively prevent the rinse aid in the first cavity 101 from leaking and mixing with the detergent or dishwashing tablets when the detergent powder or dishwashing tablets are dispensed into the container 111, thus affecting the cleaning effect.

[0070] Please see Figure 5 and Figure 6 In some embodiments, the first channel 106 and the second channel 107 are coaxially arranged, and the valve body 20 moves between a first position and a second position along the axial direction of the first channel 106. Exemplarily, a first partition 11 and a second partition 12 are spaced apart within the main body 10, with the first channel 106 passing through the first partition 11 and the second channel 107 passing through the second partition 12. A first cavity 101 is located on the side of the first partition 11 opposite to the second partition 12, a second cavity 102 is located between the first partition 11 and the second partition 12, and a third cavity 103 is located on the side of the second partition 12 opposite to the first partition 11. A first sealing part 21 and a second sealing part 22 are located between the first partition 11 and the second partition 12, so that when the valve body 20 moves along the axial direction of the first channel 106, the first sealing part 21 can contact the first partition 11 and seal the first channel 106, and the second sealing part 22 can contact the second partition 12 and seal the second channel 107. The valve body 20 passes through the second channel 107 on the second partition 12. The second partition 12 provides support for the valve body 20, and the second channel 107 guides the movement of the valve body 20. The coaxial channel structure ensures that the valve body 20 maintains stable alignment during movement, reducing movement resistance and the risk of sealing leakage.

[0071] In some embodiments, the movement of the valve body 20 can be achieved by means of a cylinder, hydraulic cylinder, linear motor drive, cam mechanism, or electromagnetic drive. This application will only use electromagnetic drive as an example for specific description. Specifically, when energized, the valve body 20 moves from the first position to the second position; after de-energization, the valve body 20 returns from the second position to the first position.

[0072] Based on the linear design of the axial movement of the valve body 20, the drive structure of the valve body 20 is simplified, making the overall device more compact, while ensuring the accuracy and reliability of the valve body 20's operation.

[0073] Please see Figure 7 and Figure 8 , Figure 7 yes Figure 1 A partial structural diagram of the distribution mechanism in the embodiment. Figure 8 yes Figure 1 A schematic diagram of the distribution mechanism from another perspective in the embodiment.

[0074] In some embodiments, the cover 40 can slide linearly above the opening of the receiving groove 111 to cover or open the receiving groove 111. The linkage component 50 can be a structure such as a linkage mechanism, gear transmission, or elastic element. When the valve body 20 moves to the second position, the cover 40 is opened by mechanical linkage. Exemplarily, the linkage component 50 includes a retainer 51, which is configured to move between a third position and a fourth position of the body 10. When the retainer 51 is in the third position, the retainer 51 can interfere with the cover 40 to keep the cover 40 in a state of covering the receiving groove 111. When the retainer 51 is in the fourth position, the cover 40 and the retainer 51 are disengaged so that the cover 40 can open the receiving groove 111.

[0075] The retainer 51 is linked to the valve body 20. As the valve body 20 moves from the first position to the second position, the retainer 51 moves from the third position to the fourth position. Thus, when the valve body 20 moves to the second position, the cover 40 is automatically opened, allowing the washing material in the receiving tank 111 to be released in a timely manner, improving dispensing efficiency and ensuring safety during use.

[0076] For example, the retainer 51 is pivotally connected to the main body 10. One end of the retainer 51 is provided with a snap fastener, which can engage with the cover 40 to keep the cover 40 in the state of covering the receiving groove 111. The other end of the retainer 51 is in movable contact with the valve body 20. When the valve body 20 moves along the axial direction of the first channel 106 between the first position and the second position, the valve body 20 drives the retainer 51 to rotate between the third position and the fourth position.

[0077] Please continue reading Figure 7 and Figure 8 The linkage component 50 also includes a first elastic element 52 and a second elastic element 53. The first elastic element 52 is disposed between the cover 40 and the main body 10. The first elastic element 52 is used to drive the cover 40 to open the receiving groove 111 after the interference engagement with the retainer 51 is released. The first elastic element 52 provides a restoring force through elastic deformation. When the interference engagement between the retainer 51 and the cover 40 is released, the first elastic element 52 contracts or rebounds to push the cover 40 to move in the opening direction. For example, the first elastic element 52 includes a torsion spring. One leg of the torsion spring is rotatably connected to the main body 10, and the other leg of the torsion spring is rotatably connected to the cover 40. When the cover 40 moves from the second position to the first position, the torsion spring is compressed and deformed.

[0078] The second elastic element 53 is disposed between the retaining member 51 and the main body 10. When the valve body 20 moves from the second position to the first position, the retaining member 51 is reset from the fourth position to the third position under the action of the second elastic element 53 and remains in the third position. That is, the retaining member 51 has a tendency to remain in the third position due to the second elastic element 53, which acts between the main body 10 and the retaining member 51. The second elastic element 53 can be a tension spring or a compression spring.

[0079] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A distribution mechanism, characterized in that, include: The main body includes a first cavity, a first channel, a second cavity, a second channel, a third cavity, and a third channel that are connected in sequence. A valve body is configured to reciprocate between a first position and a second position of the main body. When the valve body is in the first position, the valve body seals the first channel to isolate the first cavity from the second cavity. When the valve body is in the second position, the valve body opens the first channel and seals the second channel to communicate between the first cavity and the second cavity, and isolates the second cavity from the third cavity. The third cavity is also connected to a fourth channel. The dispensing mechanism has a first state and a second state. In the first state, the fourth channel is lower than the third channel, and at least part of the third cavity is lower than the fourth channel so that the third cavity can collect the medium flowing out of the second cavity after the valve body moves back and forth for the first time. In the second state, the fourth channel is higher than the third channel, and the medium in the third cavity can be discharged through the third channel.

2. The distribution mechanism according to claim 1, characterized in that, The main body also includes a fourth cavity, which is connected to the third channel so that the medium in the third cavity can enter the fourth cavity through the third channel.

3. The distribution mechanism according to claim 2, characterized in that, A backflow prevention structure is provided between the fourth cavity and the third cavity to prevent the medium in the fourth cavity from flowing back into the third cavity.

4. The distribution mechanism according to claim 3, characterized in that, The main body also includes a fifth cavity and a fifth channel. The third cavity, the third channel, the fifth cavity, and the fifth channel are sequentially connected to the fourth cavity. In the first state, the third channel is higher than the fifth channel.

5. The distribution mechanism according to claim 4, characterized in that, The anti-reverse structure includes an anti-reverse ball disposed in the fifth cavity. In the first state, the anti-reverse ball opens the fifth channel. In the second state, the anti-reverse ball blocks the fifth channel.

6. The dispensing mechanism according to any one of claims 1-5, characterized in that, The valve body includes a first sealing part and a second sealing part, which are disposed between the first channel and the second channel. When the valve body is in the first position, the first sealing part is embedded in the first channel, and when the valve body is in the second position, the second sealing part covers the end of the second channel.

7. The distribution mechanism according to claim 6, characterized in that, The first channel and the second channel are coaxially arranged, and the valve body moves between the first position and the second position along the axial direction of the first channel.

8. The dispensing mechanism according to any one of claims 1-5, characterized in that, The main body is provided with a receiving tank for holding washing materials, and the dispensing mechanism further includes: A cover is movably connected to the body so that the cover can be opened or covered by the receiving groove; A linkage component is disposed on the main body. The cover and the valve body are respectively connected to the linkage component. When the valve body moves to the second position, the linkage component drives the cover to open the receiving groove.

9. The distribution mechanism according to claim 8, characterized in that, The linkage component includes a retainer configured to move between a third position and a fourth position of the body; When the retainer is in the third position, the retainer can interfere with the cover to keep the cover in a state of covering the receiving groove; When the retainer is in the fourth position, the cover and the retainer are disengaged so that the cover can open the receiving groove; The retainer is linked to the valve body, and during the process of the valve body moving from the first position to the second position, the retainer moves from the third position to the fourth position.

10. The distribution mechanism according to claim 9, characterized in that, The linkage component also includes: A first elastic element is disposed between the cover and the main body. The first elastic element is used to drive the cover to open the receiving groove after the interference with the retaining member is released. The second elastic element is disposed between the retainer and the main body. When the valve body moves from the second position to the first position, the retainer is reset from the fourth position to the third position and held in the third position under the action of the second elastic element.

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