Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body with a washing cavity, the front side of the box body is provided with an opening and a door body capable of opening and closing the opening, a bowl basket is arranged in the washing cavity, the bottom of the bowl basket is provided with a spraying arm and a water pipe which transversely extends to supply water to the spraying arm, and a consumable feeding box is arranged in the bowl basket. The bottom of the consumable feeding box is sunken upwards to form an assembly opening capable of being arranged on a water pipe in a crossing mode, the consumable feeding box is hollow to form a liquid storage cavity, and a distribution cavity is formed in the position, corresponding to the side wall of the assembly opening, of the bottom of the consumable feeding box. A first opening communicated with the liquid storage cavity is formed in the first end of the distribution cavity, a second opening communicated with a water pipe is formed in the second end of the distribution cavity, a consumable feeding opening is formed in the second opening, and a control structure capable of controlling the first opening, the second opening and the feeding opening to be opened or closed along with the change of water pressure is arranged in the distribution cavity. According to the utility model, the consumable feeding box is arranged in the bowl basket, so that the consumable can be conveniently taken, placed and supplemented into the bowl basket.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a washing machine used for washing tableware, fruits and vegetables. Background Art

[0002] As a common household appliance, dishwashers are increasingly used in our lives.

[0003] Dishwashers are generally equipped with a detergent dispenser for storing a certain amount of detergent and automatically distributing the amount of detergent. Most existing detergent dispensers are installed on the door of the dishwasher, and are generally driven by a motor to drive the impeller to rotate to distribute the detergent. In specific applications, the following shortcomings are generally present: (1) Due to the limitation of the door space, the size of the detergent dispenser can only be designed to be small, so that the volume of the detergent dispenser for storing detergent is small, so that the user needs to frequently add detergent to the detergent dispenser during the use of the dishwasher, which makes the operation of the user more cumbersome during the use of the dishwasher; (2) The motor drive structure is costly, and the noise generated during the rotation of the impeller is relatively loud, which seriously affects the user experience.

[0004] In order to solve the above problems, Chinese patent ZL 201410339180.6 "Detergent dispenser and dishwasher" discloses a structure in which the detergent delivery structure is arranged at the bottom of the washing chamber, which is convenient for increasing the volume, but still needs to be equipped with a special drive structure and transmission structure, which is complex in structure and high in cost.

[0005] Therefore, the structure and method for dispensing consumables such as detergent and rinse aid in the current dishwasher need to be further improved. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a cleaning machine which can use washing water pressure to quantitatively put consumables in view of the current status of the prior art. The putting mechanism has a simple structure and low cost, and can solve the problem of transmission noise.

[0007] The technical solution adopted by the utility model to solve the above technical problems is:

[0008] A cleaning machine comprises a box body with a washing chamber, the front side of the box body is provided with an opening and a door body capable of opening and closing the opening, a bowl basket is provided in the washing chamber, a spray arm and a water pipe extending laterally to supply water to the spray arm are provided at the bottom of the bowl basket, a consumables delivery box is provided in the bowl basket, the bottom of the consumables delivery box is recessed upward to form an assembly port that can be placed across the water pipe, the consumables delivery box is hollow inside to form a liquid storage chamber, the bottom of the consumables delivery box is provided with a distribution chamber at the side wall corresponding to the assembly port, the first end of the distribution chamber is provided with a first opening connected to the liquid storage chamber, the second end is provided with a second opening connected to the water pipe, and a consumables delivery port is formed at the second opening, and a control structure capable of controlling the opening and closing of the first opening, the second opening and the delivery port as the water pressure changes is provided in the distribution chamber.

[0009] The utility model arranges the consumables delivery box in the bowl basket, which is convenient for taking out and adding consumables therein, and is easy to use; the utility model realizes the quantitative acquisition of consumables and the flushing of the distribution cavity by controlling the pressure of washing water in the water pipe, which can not only improve the precision of quantitative delivery of consumables and maintain the cleanliness of the delivery place, but also the whole structure is realized by the water pressure of washing water without setting a separate driving mechanism and transmission mechanism, the structure is simple and reasonable, the cost is low, and the noise problem caused by the operation of the driving mechanism is eliminated.

[0010] Preferably, the bottom sides of the liquid storage cavity are formed with guide parts extending downward and surrounding the side of the assembly port, the distribution cavity is arranged inside the guide part, the first opening is arranged on the side wall of the guide part close to the distribution cavity, the distribution cavity is clamped between the guide part and the water pipe, and the second opening is arranged on the side wall of the distribution cavity close to the water pipe. The above structure facilitates the opening and closing of the first opening and the second opening.

[0011] Preferably, the water pipe side is provided with a water guide section extending toward the second opening, and the port diameter of the water guide section is smaller than the diameter of the second opening, so that the delivery port is formed between the second opening and the port of the water guide section. With the above structure, the delivery port is arranged around the second opening, and the delivery port can be opened when the second opening is opened, so as to facilitate the delivery of consumables.

[0012] Preferably, the first end of the control structure cooperates with the first opening to control the opening and closing of the first opening, the second end of the control structure cooperates with the water guiding section to control the opening and closing of the water guiding section port, and a matching portion that can control the opening and closing of the second opening is provided in the middle of the control structure.

[0013] Preferably, the control structure includes:

[0014] A push rod is constrained in the distribution chamber so as to be axially reciprocating along the second opening, wherein the first end of the push rod passes through the second opening and extends into the water guide section and is sealed with the water guide section, and a matching portion extending radially is arranged on the outer periphery of the push rod, and the matching portion matches with the inner edge of the second opening as the push rod moves, thereby realizing the opening and closing of the second opening, and the second end of the push rod is located in the distribution chamber;

[0015] A plug is disposed in the distribution chamber and can reciprocate with the push rod and move axially relative to the push rod, so as to cooperate with the first opening to control the opening and closing of the first opening; the push rod is provided with a channel penetrating along the axial direction, and the first end of the plug is provided with a valve stem passing through the channel and capable of realizing the opening and closing of the channel with the relative movement of the plug and the push rod;

[0016] A first elastic member, disposed in the distribution chamber, so that the push rod always tends to move toward the water pipe;

[0017] The second elastic member is arranged between the plug and the push rod, so that the plug always tends to move toward the first opening direction.

[0018] By adopting the above structure, it is convenient to put consumables through the consumables delivery box before cleaning. The water pressure in the water pipe can be controlled to be P1 first. When the pressure in the water pipe is less than or equal to P1, the control structure opens the first opening, closes the second opening, and closes the delivery port, so that the consumables flow from the liquid storage chamber into the distribution chamber; then the water pressure in the water pipe is controlled to be P2, P2>P1, and the control structure closes the first opening and opens the delivery port when the pressure in the water pipe is greater than or equal to P2. At this time, the liquid storage chamber and the distribution chamber are kept separated, and the consumables in the distribution chamber enter the washing chamber through the delivery port; then the first opening is closed, the delivery port is opened, and the second opening is opened, and the water in the water pipe enters the distribution chamber to rinse it and is discharged into the washing chamber through the delivery port; after the delivery is completed, the water pressure in the water pipe is adjusted back to P1.

[0019] Preferably, the push rod includes a first section and a second section extending from the water pipe to the distribution chamber, the diameter of the first section is larger than the diameter of the second section and the two are connected by a matching part, the second section is provided with an axial hole corresponding to the channel, the valve stem passes through the axial hole, the matching part, the channel and the end is limited by the outer port of the channel, the diameter of the channel is larger than the diameter of the valve stem, the valve stem and the axial hole are sealed, the inner hollow of the matching part forms a flow guide chamber, the side wall of the matching part is provided with a water guide port for connecting the flow guide chamber with the distribution chamber, and when the valve stem opens the outer port of the channel, a flushing path is formed between the water pipe, the channel, the flow guide chamber, the water guide port, the distribution chamber, the second opening and the delivery port. The above structure is adopted to achieve the purpose of thoroughly delivering the consumables and flushing the distribution chamber after the consumables are delivered, on the one hand, to keep the distribution chamber clean, and on the other hand, to improve the delivery accuracy of the consumables.

[0020] Preferably, the length of the matching portion in the axial direction is L1, the length of the first section in the axial direction is L2, the end edge of the water-conducting section is aligned with the outer edge of the second opening, and L2 = (2-3) L1. With the above structure, as the second opening is opened and closed, the sealed connection between the first section and the water pipe can always be maintained, avoiding the problem that the water in the water pipe does not enter the distribution chamber but is directly discharged through the delivery port.

[0021] Preferably, a first inclined surface is formed at the inner edge of the second opening, which is radially outward and inwardly inclined along the water flow direction, and a convex ring extending outward is formed at the edge of the inner end of the matching portion, and the convex ring is formed with a second inclined surface matching the first inclined surface. The above structure is adopted to improve the closing sealing performance of the second opening.

[0022] Preferably, the second end of the plug is formed with a conical surface that can cooperate with the first opening for sealing, the end of the second section extends outward to form a limit ring, and the plug is provided with a clamping ring that extends from the edge of the conical surface to the limit ring and forms a clamping limit with the limit ring. The above structure is conducive to achieving the reliability of opening and closing of the first opening, and at the same time, it is convenient to assemble the plug, the valve stem and the push rod together, and the three can achieve directional movement according to different water pressures.

[0023] Preferably, the collar and the conical surface enclose an assembly chamber, and the second elastic member is sleeved on the periphery of the valve stem and located in the assembly chamber. Such a structure is conducive to improving the assembly reliability of the second elastic member.

[0024] Preferably, the first elastic member is arranged in the distribution cavity and the first end thereof abuts against the first end surface of the distribution cavity corresponding to the periphery of the first opening, and the second end of the first elastic member abuts against the matching portion.

[0025] Compared with the prior art, the advantages of the utility model are: the utility model arranges the consumables delivery box in the bowl basket, which is convenient for taking and placing and replenishing consumables therein, and is easy to use; the utility model realizes the quantitative acquisition of consumables and the flushing of the distribution cavity by controlling the pressure of the washing water in the water pipe, which can not only improve the accuracy of the quantitative delivery of consumables and maintain the cleanliness of the delivery place, but also the whole structure is realized by the water pressure of the washing water without setting a separate driving mechanism and transmission mechanism, the structure is simple and reasonable, the cost is low, and the noise problem generated by the operation of the driving mechanism is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a diagram showing the coordination of the bowl basket, the consumables delivery box, and the spray arm in the embodiment of the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0028] Figure 3 for Figure 1 Cross-sectional view (not showing the status);

[0029] Figure 4 This is a state diagram of the water pressure being P1 before the consumables are put into the embodiment of the utility model ( Figure 3 Part A);

[0030] Figure 5 This is a state diagram of the water pressure being initially adjusted to P2 during the consumables delivery in the embodiment of the utility model;

[0031] Figure 6 This is a state diagram showing that the water pressure is stable at P2 during the delivery of consumables in an embodiment of the utility model. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] like Figures 1 to 6 As shown, the cleaning machine of this embodiment includes a box body (not shown) with a washing chamber, the front side of the box body is provided with an opening and a door body capable of opening and closing the opening, a bowl basket 1 is provided in the washing chamber, a spray arm 2 and a water pipe 3 extending laterally to supply water to the spray arm 2 are provided at the bottom of the bowl basket 1, a consumables delivery box 4 is provided in the bowl basket 1, the bottom of the consumables delivery box 4 is recessed upward to form an assembly port 401 capable of straddling the water pipe 3, the consumables delivery box 4 is hollow inside to form a liquid storage chamber 41, the bottom of the consumables delivery box 4 is provided with a distribution chamber 42 at the side wall corresponding to the assembly port 401, a first end of the distribution chamber 42 is provided with a first opening 421 communicating with the liquid storage chamber 41, a second end is provided with a second opening 422 communicating with the water pipe 3, and a consumables delivery port 10 is formed at the second opening 422, and a control structure 5 capable of controlling the opening and closing of the first opening 421, the second opening 422 and the delivery port 10 as the water pressure changes is provided in the distribution chamber 42.

[0034] Guide portions 411 extending downward and surrounding the side of the assembly port 401 are formed on both sides of the bottom of the liquid storage chamber 41, and the distribution chamber 42 is arranged on the inner side of the guide portion 411 (i.e., between the guide portion 411 and the side wall of the water pipe 3), the first opening 421 is opened on the side wall of the guide portion 411 close to the distribution chamber 42, the distribution chamber 42 is clamped between the guide portion 411 and the water pipe 3, and the second opening 422 is opened on the side wall of the distribution chamber 42 close to the water pipe 3. With the above structure, it is easy to realize the opening and closing of the first opening 421 and the second opening 422.

[0035] The side of the water pipe 3 is provided with a water guide section 31 extending toward the second opening 422, and the port diameter of the water guide section 31 is smaller than the diameter of the second opening 422, so that a delivery port 10 is formed between the second opening 422 and the port of the water guide section 31. With the above structure, the delivery port 10 is arranged around the second opening 422, and the delivery port 10 can be opened when the second opening 422 is opened, so that consumables can be delivered conveniently.

[0036] In this embodiment, the first end of the control structure 5 cooperates with the first opening 421 to control the opening and closing of the first opening 421, and the second end of the control structure 5 cooperates with the water guiding section 31 to control the opening and closing of the port of the water guiding section 31. The middle part of the control structure 5 is provided with a matching part 511 that can control the opening and closing of the second opening 422.

[0037] The control structure 5 includes a push rod 51, a plug 52, a first elastic member 53 and a second elastic member 54. The push rod 51 can be constrained in the distribution chamber 42 to move back and forth axially along the second opening 422. The first end of the push rod 51 passes through the second opening 422 and extends into the water guide section 31 and cooperates with the water guide section 31 to seal. The outer periphery of the push rod 51 is provided with a matching portion 511 extending in the radial direction. The matching portion 511 moves with the push rod 51 and cooperates with the inner edge of the second opening 411 to realize the opening and closing of the second opening 422. The second end of the push rod 51 is located in the distribution chamber 42; the plug 52 is provided in the distribution chamber 42 and can move with the push rod 5 The push rod 51 is configured to reciprocate and axially move relative to the push rod 51, so as to cooperate with the first opening 421 to control the opening and closing of the first opening 421; the push rod 51 is provided with a channel 512 penetrating along the axial direction, and the first end of the plug 52 is provided with a valve stem 521 passing through the channel 512 and being able to realize the opening and closing of the channel 512 with the relative movement of the plug 52 and the push rod 51; the first elastic member 53 is a spring, which is provided in the distribution chamber 42, so that the push rod 51 always tends to move toward the direction of the water pipe 3; the second elastic member 54 is a spring, which is provided between the plug 52 and the push rod 51, so that the plug 52 always tends to move toward the direction of the first opening 421.

[0038] By adopting the above structure, it is convenient to put consumables through the consumables putting box 4 before cleaning. The water pressure in the water pipe 3 can be controlled to be P1 first. When the pressure in the water pipe 3 is less than or equal to P1, the control structure 5 opens the first opening 421, closes the second opening 422, and closes the putting port 10, so that the consumables flow from the liquid storage chamber 41 into the distribution chamber 42; then the water pressure in the water pipe 3 is controlled to be P2, P2>P1, and the control structure 5 closes the first opening 421 and opens the putting port 10 when the pressure in the water pipe 3 is greater than or equal to P2. At this time, the liquid storage chamber 41 and the distribution chamber 42 remain separated, and the consumables in the distribution chamber 42 enter the washing chamber through the putting port 10; then the first opening 421 is closed, the putting port 10 is opened, and the second opening 422 is opened, and the water in the water pipe 3 enters the distribution chamber 42 to rinse it and then is discharged into the washing chamber through the putting port 10; after the putting is completed, the water pressure in the water pipe 3 is adjusted back to P1.

[0039] In this embodiment, the push rod 51 includes a first section 501 and a second section 502 extending from the water pipe 3 to the distribution chamber 42. The diameter of the first section 501 is greater than the diameter of the second section 502 and the two are connected by a matching portion 511. The second section 502 is provided with an axial hole 5021 corresponding to the channel 512. The valve stem 521 passes through the axial hole 5021, the matching portion 511, and the channel 512, and the end portion is matched with the outer port of the channel 512 for limiting. The diameter of the channel 512 is greater than The valve stem 521 has a diameter, the valve stem 521 and the shaft hole 5021 are sealed together, the interior of the matching part 511 is hollow to form a diversion cavity 5111, and the side wall of the matching part 511 is provided with a water guide port 5112 for connecting the diversion cavity 5111 with the distribution cavity 42. When the valve stem 521 opens the outer port of the channel 512, a flushing path is formed among the water pipe 3, the channel 512, the diversion cavity 5111, the water guide port 5112, the distribution cavity 42, the second opening 422, and the delivery port 10. The above structure is adopted to achieve the purpose of thoroughly delivering the consumables and flushing the distribution cavity 42 after the consumables are delivered. On the one hand, the distribution cavity 42 is kept clean, and on the other hand, the accuracy of consumable delivery is improved.

[0040] The length of the matching portion 511 in the axial direction is L1, the length of the first section 501 in the axial direction is L2, the end edge of the water guide section 31 is aligned with the outer edge of the second opening 422, and L2 = (2-3) L1. With the above structure, as the second opening 422 is opened and closed, the sealing connection between the first section 501 and the water pipe 3 can always be maintained, avoiding the problem that the water in the water pipe 3 does not enter the distribution chamber 42 but is directly discharged through the injection port 10.

[0041] The inner edge of the second opening 422 forms a first inclined surface 4221 which is inclined radially outward and inwardly along the water flow direction, and the edge of the inner end of the matching portion 511 forms a convex ring 5113 extending outward, and the convex ring 5113 is formed with a second inclined surface 5114 which matches the first inclined surface 4221. The above structure is adopted to improve the closing sealing performance of the second opening 422.

[0042] The second end of the plug 52 is formed with a conical surface 522 that can cooperate with the first opening 421 for sealing, the end of the second section 502 extends outward to form a limit ring 5021, and the plug 52 is provided with a clamping ring 523 that extends from the edge of the conical surface 522 to the limit ring 5021 and forms a clamping limit with the limit ring 5021. The above structure is conducive to achieving the reliability of opening and closing the first opening 421, and at the same time, it is convenient to assemble the plug 52, the valve stem 521 and the push rod 51 together, and the three can realize directional movement according to different water pressures.

[0043] The collar 523 and the conical surface 522 enclose an assembly chamber 524, and the second elastic member 54 is sleeved on the periphery of the valve stem 521 and is located in the assembly chamber 524. Such a structure is conducive to improving the assembly reliability of the second elastic member 54.

[0044] The first elastic member 53 is disposed in the distribution cavity 42 and a first end thereof abuts against a first end surface of the distribution cavity 42 corresponding to the periphery of the first opening 421 , and a second end of the first elastic member 53 abuts against the matching portion 511 .

[0045] In this embodiment, the consumables delivery box 4 is arranged in the bowl basket 1, which is convenient for taking out and adding consumables therein, and is easy to use; in this embodiment, the quantitative acquisition of consumables and the flushing of the distribution cavity are achieved by controlling the pressure of the washing water in the water pipe 3, which can not only improve the accuracy of the quantitative delivery of consumables and maintain the cleanliness of the delivery place, but also the entire structure is realized by the water pressure of the washing water without the need to set up a separate driving mechanism and transmission mechanism, the structure is simple and reasonable, the cost is low, and the noise problem generated by the operation of the driving mechanism is eliminated.

[0046] The spray arm 4 is arranged at the bottom of the bowl basket 3 and supplies water through a water pipe 5 extending horizontally from the back to the front. A concave water return area is arranged at the bottom of the box body 1, and a water pump mechanism is arranged in the water return area to draw water in the water return area into the water pipe 5. The lower end of the water pipe 5 is connected to the outlet end of the water pump mechanism, the lower part of the water pipe 5 extends upward close to the inner wall of the box body, and the upper part of the water pipe 5 bends forward and extends.

[0047] The consumables delivery box 4 can be made of transparent material, with a filling port and a cap provided on the top of the box body, so that the user can observe the remaining consumables in the box and add them in time.

[0048] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A washing machine, comprising a housing with a washing chamber, wherein a bowl basket (1) is arranged in the washing chamber, a spray arm (2) and a water pipe (3) extending laterally to supply water to the spray arm (2) are arranged at the bottom of the bowl basket (1), characterized in that: The bowl basket (1) is provided with a consumable material delivery box (4), the bottom of which is recessed upwards to form an assembly opening (401) that can be placed on the water pipe (3), the consumable material delivery box (4) is hollow inside to form a liquid storage chamber (41), the bottom of which is provided with a distribution chamber (42) at a side wall corresponding to the assembly opening (401), the first end of which is provided with a first opening (421) that is connected to the liquid storage chamber (41), the second end of which is provided with a second opening (422) that is connected to the water pipe (3), and a consumable material delivery opening (10) is formed at the second opening (422), and a control structure (5) that can control the opening and closing of the first opening (421), the second opening (422) and the delivery opening (10) according to changes in water pressure is provided in the distribution chamber (42).

2. The cleaning machine according to claim 1, characterized in that: The bottom sides of the liquid storage chamber (41) are formed with guide parts (411) extending downward and surrounding the side of the assembly port (401); the distribution chamber (42) is arranged on the inner side of the guide part (411); the first opening (421) is opened on the side wall of the guide part (411) close to the distribution chamber (42); the distribution chamber (42) is clamped between the guide part (411) and the water pipe (3); and the second opening (422) is opened on the side wall of the distribution chamber (42) close to the water pipe (3).

3. The cleaning machine according to claim 2, characterized in that: The water pipe (3) is provided with a water guide section (31) extending in the direction of the second opening (422) on the side thereof, and the port diameter of the water guide section (31) is smaller than the diameter of the second opening (422), so that the injection port (10) is formed between the second opening (422) and the port of the water guide section (31).

4. The cleaning machine according to claim 3, characterized in that: The first end of the control structure (5) cooperates with the first opening (421) to control the opening and closing of the first opening (421), the second end of the control structure (5) cooperates with the water guide section (31) to control the opening and closing of the port of the water guide section (31), and a matching portion (511) capable of controlling the opening and closing of the second opening (422) is provided in the middle of the control structure (5).

5. The cleaning machine according to claim 3, characterized in that: The control structure (5) includes A push rod (51) is constrained in the distribution chamber (42) so as to be axially reciprocating along the second opening (422); a first end of the push rod (51) passes through the second opening (422) and extends into the water guide section (31) and is sealed with the water guide section (31); a radially extending mating portion (511) is provided on the outer periphery of the push rod (51); the mating portion (511) moves with the push rod (51) and is mated with the inner edge of the second opening (422) to realize opening and closing of the second opening (422); and a second end of the push rod (51) is located in the distribution chamber (42); a plug (52) disposed in the distribution chamber (42) and capable of reciprocating with the push rod (51) and axially moving relative to the push rod (51) so as to cooperate with the first opening (421) to control the opening and closing of the first opening (421); the push rod (51) is provided with a channel (512) penetrating along the axial direction, and a valve stem (521) is provided at the first end of the plug (52) which passes through the channel (512) and can realize the opening and closing of the channel (512) with the relative movement of the plug (52) and the push rod (51); A first elastic member (53) is disposed in the distribution chamber (42) to ensure that the push rod (51) always has a tendency to move toward the water pipe (3); The second elastic member (54) is disposed between the plug (52) and the push rod (51) so as to ensure that the plug (52) always has a tendency to move toward the first opening (421).

6. The cleaning machine according to claim 5, characterized in that: The push rod (51) comprises a first section (501) and a second section (502) extending from the water pipe (3) to the distribution chamber (42); the diameter of the first section (501) is larger than the diameter of the second section (502) and the two are connected through a matching portion (511); the second section (502) is provided with an axial hole corresponding to the channel (512); the valve stem (521) passes through the axial hole, the matching portion (511) and the channel (512) and the end portion is matched with the outer end of the channel (512) to limit the position; the diameter of the channel (512) is larger than the diameter of the valve stem (521); The valve stem (521) and the shaft hole are sealed in cooperation, the interior of the cooperation portion (511) is hollow to form a flow guide cavity (5111), and the side wall of the cooperation portion (511) is provided with a water guide port (5112) for connecting the flow guide cavity (5111) and the distribution cavity (42). When the valve stem (521) opens the outer port of the channel (512), a flushing path is formed among the water pipe (3), the channel (512), the flow guide cavity (5111), the water guide port (5112), the distribution cavity (42), the second opening (422), and the delivery port (10).

7. The cleaning machine according to claim 6, characterized in that: The axial length of the matching portion (511) is L1, the axial length of the first section (501) is L2, the end edge of the water-conducting section (31) is aligned with the outer edge of the second opening (422), and L2 = (2-3) L1.

8. The cleaning machine according to claim 6, characterized in that: A first inclined surface (4221) is formed at the inner edge of the second opening (422) and is inclined radially outward and inward along the direction of water flow. The edge of the inner end of the matching portion (511) forms a convex ring extending outward, and the convex ring is formed with a second inclined surface (5114) that matches the first inclined surface (4221).

9. The cleaning machine according to claim 6, characterized in that: The second end of the plug (52) is formed with a conical surface that can cooperate with the first opening (421) for sealing, and the end of the second section (502) extends outward to form a limiting ring. The plug (52) is provided with a clamping ring that extends from the edge of the conical surface to the limiting ring and forms a clamping limit with the limiting ring.

10. The cleaning machine according to claim 9, characterized in that: An assembly chamber is enclosed between the clamping ring and the conical surface, and the second elastic member (54) is sleeved on the periphery of the valve stem (521) and is located in the assembly chamber.

11. The cleaning machine according to claim 5, characterized in that: The first elastic member (53) is arranged in the distribution cavity (42) and the first end thereof corresponds to the periphery of the first opening (421) and abuts against the first end surface of the distribution cavity (42), and the second end of the first elastic member (53) abuts against the matching portion (511).

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