EP4613927A1

EP4613927A1 - Detergent dispensing device and washing machine

Info

Publication number: EP4613927A1
Application number: EP23888033.0A
Authority: EP
Inventors: Tao Huang; Bencai HUANG; Baozhen CHENG
Original assignee: Chongqing Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Chongqing Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-11-08
Filing date: 2023-11-08
Publication date: 2025-09-10
Also published as: AU2023378215A1; WO2024099344A1; EP4613927A4; CN118007370A; JP2025535543A

Abstract

The present invention discloses a detergent dispensing device and a washing machine, comprising a housing, a non-return valve being telescopically arranged inside; a pushing part, a head of which is in contact with the non-return valve; a sleeve being relatively movably sleeved along the length direction of the pushing part, and always in contact with the end of the non-return valve during the process of the pushing part being connected or disconnected from the housing. The present invention arranges a sleeve on the outside of the pushing part, and the sleeve always in contact and seals with the end of the non-return valve during the process of the pushing part being connected or disconnected from the housing, so that no detergent is left in the housing, and no dripping occurs when the housing and the pushing part are disconnected.

Description

TECHNICAL FIELD

The invention belongs to the field of clothing processing, and in particular relates to a detergent dispensing device and a washing machine.

BACKGROUND

As people's living standards are getting higher and higher, washing machines are becoming more and more popular. By placing clothes and detergent in a specific container, the washing machine automatically completes the laundry work, freeing people from the complicated daily work. Among them, the detergent is put into the washing drum through an automatic dispensing system to wash the clothes.
In the traditional washing machine detergent dispensing, the connection part between the liquid storage box and the dispenser is connected by the push pin of the dispenser. When connected, the check valve in the liquid storage box is pushed open by the push pin of the dispenser to achieve conduction. However, at the abutment part between the push pin of the dispenser and the check valve in the liquid storage box, when the two are plugged in, detergent will remain in the connection part. When the push pin of the dispenser gradually separates from the liquid storage box, the valve body in the liquid storage box will seal the detergent into the sleeve end of the liquid storage box through the sealing ring. When the push pin of the dispenser and the push spring of the liquid storage box are separated, this part of the liquid will be pushed out, causing dripping. On the one hand, it causes unnecessary waste; on the other hand, it causes pollution to the washing machine or the floor, which brings a bad user experience.
In view of this, the present invention is proposed.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a detergent dispensing device. A sleeve is arranged on the outside of a pushing part. During the process of connecting or disconnecting the pushing part from the housing, the sleeve is always abutted and sealed with the end of the check valve, so that no detergent will remain in the housing. When the housing and the pushing part are disconnected, no dripping will occur.
Another object of the present invention is to provide a washing machine.
In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:
A detergent dispensing device, comprising:

a housing, with a check valve retractably being disposed therein;
a pushing part, a head portion of which being abutted against the check valve; and
a sleeve, being sleeved along a length direction of the pushing part in a relatively movable manner, wherein the sleeve is always in contact with an end of the check valve during a process of connecting or disconnecting the pushing part from the housing.

Further, the check valve comprises a valve core, which is telescopically arranged inside the check valve and is used to open and close the check valve.
The pushing part is a hollow structure, and an inlet hole is arranged on the peripheral wall of the head portion. When the pushing part is connected to the housing, the valve core is pushed open to form a liquid flow channel from the check valve to the pushing part.
Furthermore, the check valve further comprises a front valve seat and a rear valve seat connected to each other, one end of the front valve seat is provided with a liquid outlet valve port, and the side wall of the rear valve seat is provided with a liquid inlet valve port.
The valve core is telescopically arranged in the front valve seat and the rear valve seat, and is used to open and close the liquid outlet valve port. When the pushing part is connected to the housing, the valve core is pushed open to form a liquid flow channel from the liquid inlet valve port to the pushing part.
Furthermore, a protrusion is provided on the outer wall of the sleeve.
The outer portion of the pushing part is provided with a first spring, one end of the first spring is connected to the outer wall of the pushing part and the other end of the first spring is connected to the inner wall of the sleeve, so that the sleeve is movably connected relative to the pushing part.
Furthermore, a second spring is provided in the housing, one end of the second spring is connected to the inner wall of the rear portion of the housing, and the other end of the second spring is connected to the rear valve seat of the check valve.
Furthermore, a second annular groove is provided on the outer peripheral wall of the front valve seat, a detection probe is provided on the side wall of the sleeve in the same direction as the head portion of the pushing part, and a hollow hole is provided on the peripheral side of the housing. After the pushing part is connected to the housing, the detection probe partially or completely overlaps with the hollow hole.
Furthermore, a first annular groove is provided on the outer peripheral wall of the sleeve, a first sealing ring is provided in the first annular groove, and a distance between the first sealing ring and the protrusion is smaller than a minimum distance from the hollow hole to the end of the housing.
Furthermore, a second annular groove is provided on the outer peripheral wall of the front valve seat of the check valve, and a second sealing ring is provided in the second annular groove to seal the end of the housing and a side wall of the front valve seat (71) opposite to the housing (6) when the sleeve is separated from the housing.
Furthermore, the distance between the first sealing ring and the second sealing ring is greater than or equal to the minimum distance from the hollow hole to the end of the housing.
The present invention also provides a washing machine having the above-mentioned detergent dispensing device.
After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

(1) The present invention provides a sleeve on the outside of the pushing part so that the sleeve always abuts and seals against the end of the front valve seat during the process of connecting or disconnecting the pushing part from the housing, so that no detergent remains in the housing. When the housing and the pushing part are disconnected, no dripping occurs, thereby avoiding waste and inconvenience to the user.
(2) The present invention provides a protrusion on the outer peripheral wall of the first sleeve, and the sleeve enters the housing. After the protrusion contacts the end of the housing, the length of the sleeve extending into the housing is determined, and the first spring is compressed, so that the pushing part extends relative to the sleeve and abuts against the valve core, thereby ensuring that the pushing part can push the valve core to disconnect from the liquid inlet valve port and fully open the check valve.
(3) The present invention provides a strip-shaped opening in the first sleeve and a limiting block on the outer periphery of the pushing part, and the limiting block and the strip-shaped opening are slidably matched to ensure the stability of the sleeve during the forward and backward extension process.
(4) The present invention provides a detection probe on the side wall of one end of the sleeve and opens a hollow hole in the housing, so that when the pushing part is connected to the housing, the detection probe is at least partially exposed in the hollow hole, so that the detection probe can contact the liquid outside the housing, thereby detecting the conductivity or pH value or other water quality information of the detergent, and making a corresponding judgment based on the detected water quality information of the detergent.
(5) The present invention provides a first sealing ring on the outer peripheral wall of the sleeve, and the distance between the first sealing ring and the protrusion is smaller than the minimum distance from the hollow hole to the end of the housing body, thereby ensuring that the first sealing ring will not move to the hollow hole when the housing body continues to move toward the pushing part, thereby ensuring the sealing performance during the connection between the housing and the pushing part, and ensuring that the detergent will not overflow through the gap between the sleeve and the housing.
(6) The present invention provides a second sealing ring on the outer peripheral wall of the front valve seat. When the sleeve is detached from the housing and the pushing part is detached from the housing, the second sealing ring gradually forms a seal between the front valve seat and the housing under the rebound action of the second spring. After complete detachment, the second sealing ring seals at the end of the housing to prevent the detergent from flowing out of the hollow hole.

The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.
In the attached figures:

Figure 1 is a front view of a structure diagram of a detergent dispensing device according to an embodiment of the present invention;
Figure 2 is an axonometric view of a detergent dispensing device according to an embodiment of the present invention;
Figure 3 is a cross-sectional view of the connection state of the housing and the pushing part of the detergent dispensing device according to the embodiment of the present invention;
Figure 4 is a schematic structural diagram of a sleeve of a detergent dispensing device according to an embodiment of the present invention;
Figure 5 is a schematic structural diagram of the detergent dispensing device in a disengaged state according to an embodiment of the present invention;
Figure 6 is a cross-sectional view of the housing in a connected state of the detergent dispensing device according to an embodiment of the present invention;
Figure 7 is a cross-sectional view of the pushing part of the detergent dispensing device in the connected state according to the embodiment of the present invention.

Description of the main components in the figure: 1. Pushing part; 11. Baffle; 12. Inlet hole; 13. Detection probe; 14. Third annular groove; 15. Mounting seat; 2. Sleeve; 21. First sleeve; 22. Protrusion; 23. Strip-shaped opening; 24. First annular groove; 25. Second sleeve; 26. Protrusion; 3. First spring; 4. Limiting block; 5. First sealing ring; 6. Housing; 61. Hollow hole; 62. Connecting ring; 7. Check valve; 71. Front valve seat; 72. Second annular groove; 73. Valve core; 74. Third spring; 75. Second spring; 76. Rear valve seat; 77. Liquid outlet valve port; 78. Liquid inlet valve port; 8. Second sealing ring; 9. Third sealing ring.
It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.
the present invention, it should be noted that the directions or positional relationships indicated by terms such as "upper", "lower", " front ", "back", "left", " right ", "vertical", " horizontal ", "inside", and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
The present invention will be further described in detail below with reference to the embodiments.
As shown in figure 1 to figure 7, an embodiment of the present invention provides a detergent dispensing device, including a housing 6 and a pushing part 1.
A check valve 7 is telescopically provided inside the housing 6, and the head of the pushing part 1 abuts against the check valve 7.
A sleeve 2 is relatively movably sleeved along the length direction of the pushing part 1, that is, the sleeve 2 is slidably sleeved outside the pushing part 1. When the pushing part 1 is connected or disconnected from the housing 6, it always abuts against the end of the check valve 7.
In the present invention, when the pushing part 1 and the housing 6 are connected: the pushing part 1 is inserted into the chamber of the housing 6, and the head of the pushing part 1 pushes open the check valve 7, so that the check valve 7 and the pushing part 1 are connected. And the inner and outer sides of the sleeve 2 are respectively sealed and slidably arranged with the pushing part 1 and the housing 6, and when the pushing part 1 is disconnected from the housing 6, no detergent will remain in the housing 6 during the whole process, and the detergent will not drip until the pushing part 1 is completely pushed out and detached. While saving resources, it will not cause pollution to the washing machine or the ground, ensuring the user experience. Furthermore, the check valve 7 includes a valve core 73, which is telescopically arranged inside the check valve 7 and is used to open and close the check valve 7.
The pushing part 1 is a hollow structure, and an inlet hole 12 is provided on the peripheral wall of the head. When the pushing part 1 is connected to the housing 6, the valve core 73 is pushed open to form a liquid flow channel from the check valve 7 to the pushing part 1.
It should be noted that the pushing part 1 can be a tubular structure, a prismatic structure, etc. Preferably, the head of the pushing part 1 is set to a conical structure, and the head diameter is reduced, so that it is convenient to abut against the valve core 73 of the check valve 7 and push it. In addition, a flow channel for the flow of detergent is provided inside the pushing part 1. The inlet hole 12 is provided on the peripheral wall of the pushing part 1, and the end of the pushing part 1 away from the inlet hole 12 is open.
Furthermore, the aperture of the pushing part 1 near the head is smaller than the aperture near the tail and is arranged in a stepped manner, thereby ensuring that when the detergent transitions from the head to the tail, the liquid pressure gradually decreases, ensuring stable liquid discharge.
In the present invention, the valve core 73 of the check valve 7 adopts a telescopic opening and closing method. The interior of the pushing part 1 is a hollow structure, and an inlet hole 12 is provided on the peripheral wall of the head of the pushing part 1. When the valve core 73 is pushed open by the pushing part 1, the check valve 7 is conducted, so that the check valve 7 and the interior of the pushing part 1 form a whole liquid flow channel, ensuring that the detergent can flow into the interior of the pushing part 1 through the check valve 7 and finally into the washing machine.
After the pushing part 1 and the housing 6 are connected, a closed liquid channel is formed inside the two. The sleeve 2 is arranged outside the pushing part 1, and the sleeve 2 abuts against the end of the check valve 7, so that the connection part where the pushing part 1 and the housing 6 are connected will not retain the cleaning liquid, and after the pushing part 1 is pushed out of the connection with the housing 6, no dripping will occur.
Furthermore, the check valve 7 further comprises a front valve seat 71 and a rear valve seat 76 which are connected to each other. One end of the front valve seat 71 is provided with a liquid outlet valve port 77, and the side wall of the rear valve seat 76 is provided with a liquid inlet valve port 78.
The valve core 73 is telescopically disposed in the front valve seat 71 and the rear valve seat 76 for opening and closing the liquid outlet valve port 77. When the pushing part1 is connected to the housing 6, the valve core 73 is pushed open to form a liquid flow channel from the liquid inlet valve port 78 to the pushing part 1.
In the present invention, the check valve 7 includes a front valve seat 71 and a rear valve seat 76. The front valve seat 71 and the rear valve seat 76 are butted against each other and partially nested to achieve connection. A liquid outlet valve port 77 is provided at the front end of the front valve seat 71, and the valve core 73 is movably disposed in the front valve seat 71 and the rear valve seat 76, and the valve core 73 is reset by a third spring 74.
When the pushing part 1 is connected to the housing 6, the head of the pushing part 1 abuts against the valve core 73 of the check valve 7; a liquid inlet valve port 78 is also provided on the side wall of the rear valve seat 76, and the head of the pushing part 1 can push open the valve core 73 of the check valve 7, so that the valve core 73 is separated from the liquid outlet valve port 77, thereby realizing the conduction of the housing 6.
The valve core 73 contacts and pushes the valve core 73 to move toward the rear valve seat 76, and the valve core 73 is disconnected from the liquid outlet valve port 77, forming a liquid flow channel from the liquid inlet valve port 78 to the liquid outlet valve port 77, and then through the inlet hole 12 of the pushing part 1 into the hollow interior thereof.
In addition, when the sleeve 2 on the outer periphery of the pushing part 1 is inserted into the chamber of the housing 6, it contacts the end of the front valve seat 71, and during the process of connecting or disconnecting the pushing part 1 from the housing 6, the sleeve 2 is always in sealed contact with the front valve seat 71, so that the entire liquid passage from the check valve 7 to the pushing part 1 is always isolated from the inner wall of the housing 6, and no detergent will be left at the connection between the housing 6 and the pushing part 1. After the housing 6 and the pushing part 1 are disconnected, no residual detergent will drip down and cause dripping. Not only will it not cause waste, it will also not dirty the washing machine or the floor, ensuring the user experience.
Furthermore, a protrusion 22 is provided on the outer wall of the sleeve 2.
The outer part of the pushing part 1 is sleeved with a first spring 3, one end of which is connected to the outer wall of the pushing part 1, and the other end of which is connected to the inner wall of the sleeve 2, so that the sleeve 2 is movably connected relative to the pushing part 1.
Preferably, the sleeve 2 comprises a first sleeve 21 and a second sleeve 25. Characterized in that,
The protrusion 22 is provided on the outer peripheral wall of the first sleeve 21, and the protrusion 22 abuts against the end of the housing 6.
One end of the second sleeve 25 is connected to the first sleeve 21, and the other end of the second sleeve 25 abuts against an end of the front valve seat 71.
A protrusion portion 26 is provided at the connection between the second sleeve 25 and the first sleeve 21, a baffle 11 is provided on the outer periphery of the pushing part 1, and a first spring 3 is sleeved between the baffle 11 and the protrusion portion 26.
In the present invention, the ends of the first sleeve 21 and the second sleeve 25 are butted, the interiors of the two sleeves are connected, and the sleeve 2 composed of the two is sleeved on the outside of the pushing part 1. In addition, a protrusion portion 26 is provided inside the connection between the first sleeve 21 and the second sleeve 25, and a baffle 11 is provided on the outer peripheral wall of the pushing part 1. The first spring 3 is sleeved on the outer periphery of the pushing part 1 between the protrusion portion 26 and the baffle 11, and the movement and reset of the sleeve 2 relative to the pushing part 1 are achieved by the elastic force of the first spring 3.
During the entire process of connecting or disconnecting the pushing part 1, the end of the sleeve 2 can always be in sealing contact with the end of the front valve seat 71, ensuring that the liquid flow channel formed between the check valve 7 in the housing 6 and the pushing part 1 is always closed and will not overflow into the housing 6.
Specifically, a protrusion 22 is provided on the outer peripheral wall of the first sleeve 21. As the housing 6 moves toward the side of the pushing part 1, the sleeve 2 continuously extends into the interior of the housing 6 until it abuts against the protrusion 22. Then, during the continued movement process, the sleeve 2 extends into the housing 6 to a certain length, and the first spring 3 is compressed, so that the pushing part 1 extends relative to the sleeve 2 and abuts against the valve core 73, thereby ensuring that the pushing part 1 can push the valve core 73 to disconnect from the liquid outlet valve port 77, and the check valve 7 can be fully opened.
Furthermore, the diameter of the second sleeve 25 is smaller than the diameter of the first sleeve 21, and the protrusion portion 26 is formed when the two are butted.
In the present invention, the first sleeve 21 and the second sleeve 25 can be butted together by welding or by a detachable threaded connection. The diameter of the first sleeve 21 is larger than the diameter of the second sleeve 25. The outer diameters of the two are the same, and when butted together, the end face of the second sleeve 25 will have a protruding end face relative to the first sleeve 21, which is the protrusion portion 26. The first spring 3 is sleeved on the outer periphery of the pushing part 1, and the end of the first spring 3 is limited by the protrusion portion 26 and the baffle 11, so as to ensure the quick installation and limiting of the first spring 3.
Furthermore, a strip-shaped opening 23 is provided on the first sleeve 21 and is extended along the length direction of the pushing part 1. A limiting block 4 is provided on the outer periphery of the pushing part 1 and is slidably connected to the strip-shaped opening 23.
In the present invention, two parallel strip-shaped openings 23 are provided on the side wall of the first sleeve 21, and a limiting block 4 is provided on the outside of the pushing part 1, and the limiting block 4 is located in the strip-shaped opening 23. Referring to figure 1, the upper and lower end surfaces of the limiting block 4 are in contact with the side wall of the strip-shaped opening 23 in the length direction, and when the pushing part 1 is connected to the housing 6, when the sleeve 2 goes deeper into the housing 6, the limiting block 4 cooperates with the strip-shaped opening 23 to ensure the stability of the sleeve 2 during the forward and backward extension process.
Specifically, in order to more conveniently assemble the sleeve 2 in the pushing part 1 to achieve back and forth sliding, the limiting block 4 is designed to be rotatable or telescopic and hidden. Taking the telescopic method as an example, a groove is provided on the outer peripheral side wall of the pushing part 1, and the inside is connected to the limiting block 4 through an elastic member. When assembling the sleeve 2 on the outer periphery of the pushing part 1, it is only necessary to press the limiting block 4 to make it enter the groove to achieve avoidance. When the strip-shaped opening 23 of the sleeve 2 surrounds the limiting block 4, the pressure on the limiting block 4 can be released. The limiting block 4 protrudes from the surface of the pushing part 1 under the reset of the elastic member to achieve sliding connection with the strip-shaped opening 23.
Furthermore, a second spring 75 is provided in the housing 6, one end of which is connected to the inner wall of the rear portion of the housing 6, and the other end of which is connected to the rear valve seat 76 of the check valve 7.
In the present invention, the interior of the housing 6 is connected to the rear valve seat 76 of the check valve 7 through the second spring 75. Specifically, the rear part of the housing 6 is provided with an annular protrusion, and one end of the second spring 75 can be clamped on the outside thereof. In addition, the outer diameter of the rear valve seat 76 is smaller than the outer diameter of the front valve seat 71, thereby also forming a relative annular protrusion, and the other end of the second spring 75 is clamped on the outside of the rear valve seat 76. When the pushing part 1 enters the housing 6, the entire check valve 7 will move toward the inside of the housing 6, and under the action of the second spring 75, the front valve seat 71 and the sleeve 2 are more closely connected.
Furthermore, a third annular groove 14 is provided on the peripheral wall of the head of the pushing part 1, and a third sealing ring 9 is provided in the third annular groove 14, which is used to seal the front valve seat 71 and the pushing part 1 when the pushing part 1 is connected to the housing 6.
According to figure 3, the third sealing ring 9 provided at the head of the pushing part 1 of the present invention is located on the right side of the inlet hole 12, that is, on the side of the inlet hole 12 away from the front valve seat 71. After the pushing part 1 is docked with the housing 6, the head of the pushing part 1 pushes open the valve core 73, and at this time, the third sealing ring 9 and the inner wall of the front valve seat 71 are sealed, thereby ensuring that the detergent flows into the inlet hole 12 from the liquid outlet valve port 77.
Furthermore, a detection probe 13 is provided on the side wall of the sleeve 2 in the same direction as the head of the pushing part 1, and a hollow hole 61 is provided on the peripheral side of the housing 6. After the pushing part 1 is connected to the housing 6, the detection probe 13 partially or completely overlaps with the hollow hole 61.
In the present invention, a detection probe 13 is arranged on the side wall of one end of the sleeve 2, wherein the detection probe 13 extends in the length direction of the sleeve 2, and a lead is arranged inside the pushing part 1, and a mounting seat 15 is arranged on the side wall of one end of the pushing part 1 away from the housing 6, and the lead is led out from the mounting seat 15. The detection probe 13 and the lead adopt a contact-type conduction mode. When the sleeve 2 abuts against the end of the check valve 7 in the housing 6, the detection probe 13 is connected to the lead, and the entire circuit forms a loop, then the circuit of the detection probe 13 is conducted.
A plurality of hollow holes 61 are provided on the peripheral side wall of the housing 6, so that when the pushing part 1 is connected to the housing 6, the detection probe 13 is at least partially exposed in the hollow hole 61, so that the detection probe 13 can contact the liquid outside the housing 6, so as to detect the conductivity or pH value or other liquid quality information of the detergent, and make corresponding judgments based on the detected liquid quality information of the detergent, such as judging the remaining amount of the detergent, the flow rate of the detergent, etc., so as to carry out subsequent processing.
Furthermore, the outer peripheral wall of the sleeve 2 is provided with a first annular groove 24, in which a first sealing ring 5 is provided, and the distance between the first sealing ring 5 and the protrusion 22 is smaller than the minimum distance from the hollow hole 61 to the end of the housing 6.
Specifically, the outer peripheral wall of the second sleeve 25 is provided with a first annular groove 24, and the first sealing ring 5 is sleeved in the first annular groove 24.
In the present invention, the first annular groove 24 is provided on the outer periphery of the second sleeve 25, and the first sealing ring 5 is sleeved therein, so as to achieve sealing of the side wall between the sleeve 2 and the housing 6. Specifically, when the pushing part 1 extends into the housing 6 for connection, the first sealing ring 5 in the second sleeve 25 is in the overlapped area of the second sleeve 25 and the housing 6, so as to always ensure the sealing performance between the second sleeve 25 and the housing 6.
At the same time, since the distance between the first sealing ring 5 and the protrusion 22 is smaller than the minimum distance from the hollow hole 61 to the end of the housing 6, it is ensured that when the housing 6 continues to move toward the pushing part 1, the first sealing ring 5 will not move to the hollow hole 61, thereby ensuring the sealing performance during the connection between the housing 6 and the pushing part 1, and ensuring that the detergent will not overflow through the gap between the sleeve 2 and the housing 6.
Furthermore, the outer peripheral wall of the front valve seat 71 of the check valve 7 is provided with a second annular groove 72, and a second sealing ring 8 is provided in the second annular groove 72, which seals the end of the housing 6 and the opposite side wall of the front valve seat 71 when the sleeve 2 is separated from the housing 6.
In the present invention, the outer peripheral wall of the front valve seat 71 near its end is provided with a second annular groove 72, and the second sealing ring 8 is sleeved therein. When the pushing part 1 is pushed and disconnected from the housing 6, the second sealing ring 8 gradually forms a seal between the front valve seat 71 and the housing 6 under the rebound action of the second spring 75 of the check valve 7. After the complete separation, the second sealing ring 8 seals at the end of the housing 6 to prevent the detergent from flowing out of the hollow hole 61.
Furthermore, the distance between the first sealing ring 5 and the second sealing ring 8 is greater than or equal to the minimum distance from the hollow hole 61 to the end of the housing 6.
the present invention, when the pushing part 1 is separated from the housing 6, the second spring 75 starts to push the check valve 7 to reset, and the sleeve 2 and the pushing part 1 move together toward the end of the housing 6. When the front valve seat 71 of the check valve 7 moves in the housing 6, the first sealing ring 5 will seal with the end of the housing 6, and the second sealing ring 8 will move along the length direction of the hollow hole 61, so that the first sealing ring 5 and the second sealing ring 8 will not form a sealed space at the end of the housing 6 at the same time to generate vacuum pressure, thereby ensuring that the pushing part 1 can be easily pushed and separated.
Specifically, under the restoring force of the second spring 75, the first sealing ring 5 on the second sleeve 25 at least just separates from the end of the housing 6, and the second sealing ring 8 enters the end of the housing 6 through the hollow hole 61 to seal the end of the housing 6. At the same time, since the second sealing ring 8 no longer forms a seal between the sleeve 2 and the housing 6, when the disconnection continues, the first sealing ring 5 and the second sealing ring 8 are always sealed in the housing 6, and no vacuum pressure is generated between the two sealing rings, thereby ensuring that the pushing part 1 and the housing 6 can be easily pushed and ejected.
Furthermore, the first sealing ring 5 and the second sealing ring 8 are both V-shaped sealing rings, and the two are arranged in opposite directions.
In the present invention, the cross-sections of the first sealing ring 5 and the second sealing ring 8 are V-shaped. Referring to Figure 3, the opening of the second sealing ring 8 faces one side of the liquid inlet valve port 78, while the opening of the first sealing ring 5 faces the opposite direction to the second sealing ring 8.
Due to the setting of the opening direction of the first sealing ring 5 and the second sealing ring 8, the opening of the first sealing ring 5 will follow the movement direction of the second sleeve 25 toward the inside of the housing 6. Therefore, when the housing 6 moves toward the side of the pushing part 1, the first sealing ring 5 is easy to deform during the movement to achieve a smooth movement effect.
As the opening direction of the second sealing ring 8 is toward the rear end of the housing 6, when the pushing part 1 is separated from the housing 6, it is convenient for the second spring 75 to reset the pushing part 1.
The present invention also provides a washing machine with the above-mentioned detergent dispensing device, wherein a push-pull type liquid storage box is arranged at the front portion of the washing machine, wherein the liquid outlet of the liquid storage box is connected to the housing 6. Specifically, the end of the housing 6 is turned outward to form a connecting ring 62, and the inner side wall of the connecting ring 62 is provided with a thread, and an external thread matching the thread is arranged at the liquid outlet of the liquid storage box, thereby realizing the connection of the housing 6, and the main body of the housing 6 is arranged inside the liquid storage box.
The housing 6 is connected to the pushing part 1 provided on the liquid injection port of the washing machine during the pushing process, and the pushing part 1 pushes open the valve core 73 in the check valve 7 in the housing 6 to achieve the conduction of the housing 6, and then the detergent dispensing device can be used to deliver the detergent. At the same time, since the sleeve 2 is slidably provided on the outer side of the pushing part 1, the sleeve 2 always abuts against the front valve seat 71 on the check valve 7 to achieve a sealed state, so that when the housing 6 is disconnected from the pushing part 1, no dripping occurs.
The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

A detergent dispensing device, comprising:
a housing (6), with a check valve (7) retractably being disposed therein;

a pushing part (1), a head portion of which is abutted against the check valve (7); and

a sleeve (2), being sleeved along a length direction of the pushing part (1) in a relatively movable manner, wherein the sleeve (2) is kept in contact with an end of the check valve (7) during a process of the pushing part (1) connecting with or disconnecting from the housing (6).
The detergent dispensing device according to claim 1, characterized in that,
the check valve (7) comprises a valve core (73) which is telescopically arranged inside the check valve (7) and is configured to open and close the check valve (7);

the pushing part (1) is a hollow structure, and an inlet hole (12) is provided on a peripheral wall of the head portion, when the pushing part (1) is connected to the housing (6), the valve core (73) is pushed open to form a liquid flow channel from the check valve (7) to the pushing part (1).
The detergent dispensing device according to claim 2, characterized in that,
the check valve (7) further comprises a front valve seat (71) and a rear valve seat (76) which are connected to each other, one end of the front valve seat (71) is provided with a liquid outlet valve port (77), and a side wall of the rear valve seat (76) is provided with a liquid inlet valve port (78);

the valve core (73) is telescopically arranged in the front valve seat (71) and the rear valve seat (76) and is configured to open and close the liquid outlet valve port (77); when the pushing part (1) is connected to the housing (6), the valve core (73) is pushed open to form the liquid flow channel from the liquid inlet valve port (78) to the pushing part (1).
The detergent dispensing device according to any one of claims 1 to 3, characterized in that,
a protrusion (22) is provided on an outer wall of the sleeve (2);

an outer portion of the pushing part (1) is sleeved with a first spring (3), one end of the first spring (3) is connected to an outer wall of the pushing part (1) and an other end of the first spring (3) is connected to an inner wall of the sleeve (2), so that the sleeve (2) is movably connected relative to the pushing part (1).
The detergent dispensing device according to claim 3, characterized in that, a second spring (75) is provided in the housing (6), one end of the second spring (75) is connected to an inner wall of a rear portion of the housing (6), and an other end of the second spring (75) is connected to the rear valve seat (76) of the check valve (7).
The detergent dispensing device according to claim 4, characterized in that, a detection probe (13) is provided on a side wall of the sleeve (2) in a same direction as the head portion of the pushing part (1), and a hollow hole (61) is provided on a peripheral side of the housing (6), and after the pushing part (1) is connected to the housing (6), the detection probe (13) and the hollow hole (61) are partially or completely overlapped.
The detergent dispensing device according to claim 6, characterized in that, a first annular groove (24) is provided on an outer peripheral wall of the sleeve (2), a first sealing ring (5) is provided in the first annular groove (24), and a distance between the first sealing ring (5) and the protrusion (22) is smaller than a minimum distance from the hollow hole (61) to an end of the housing (6).
The detergent dispensing according to claim 7, characterized in that, a second annular groove (72) is provided on an outer peripheral wall of the front valve seat (71) of the check valve (7), and a second sealing ring (8) is provided in the second annular groove (72) to seal between the end of the housing (6) and a side wall of the front valve seat (71) opposite to the housing (6) when the sleeve (2) is disconnected from the housing (6).
The detergent dispensing device according to claim 8, characterized in that, a distance between the first sealing ring (5) and the second sealing ring (8) is greater than or equal to the minimum distance from the hollow hole (61) to the end of the housing (6).
A washing machine, comprising the detergent dispensing device according to any one of claims 1 to 9.