Coffee machine drainage structure

Abstract

The utility model discloses a coffee machine drainage structure belongs to coffee machine technical field, including drain valve seat, the drain valve seat is equipped with water inlet, first water outlet, second water outlet and overflow passage, the overflow passage is located with water inlet, first water outlet and second water outlet intercommunication respectively, the filter assembly is located at least partially in overflow passage, the filter assembly is adjacent to the water inlet setting, the plug assembly is movably arranged on the drain valve seat, the plug assembly is located on the second water outlet, and is matched with the second water outlet through magnetic attraction structure, the filter assembly is connected with plug assembly through elastic connecting piece, the overflow passage is provided with the reducing adjusting part, the reducing adjusting part is movably connected with the drain valve seat, and the utility model solves the technical problem that traditional drain valve is easy to block, and the technical problem that inconvenient adjustment and cleaning difficulty are solved.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to a drainage structure for a coffee machine. Background Technology

[0002] In household appliances such as coffee makers, drain valves are crucial components for ensuring unobstructed water flow and proper operation. Traditional drain valves typically control water flow and filter impurities through simple filters and valve structures. However, with prolonged use, these filters easily become clogged with coffee grounds or other particles, leading to decreased drainage efficiency or even complete blockage. Furthermore, the flow regulation function of drain valves is often limited, making it difficult to flexibly adjust the water flow according to actual needs, affecting the adaptability of the device and the user experience. Existing solutions often alleviate clogging by increasing the number of filter layers or manual cleaning, but the effects are limited and the operations are complex; while flow regulation usually relies on a fixed orifice design, making it difficult to meet diverse usage scenarios. These technical contradictions challenge the stability and convenience of drain valves in long-term use.

[0003] Therefore, there is an urgent need for a drain valve design that can effectively prevent clogging and flexibly adjust the flow rate to improve the overall performance and user experience of equipment such as coffee machines. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides a drainage structure for a coffee machine.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A coffee machine drainage structure includes a drain valve seat with a flow channel, and a filter assembly partially disposed within the flow channel for filtering impurities and scale. A variable diameter adjusting component is disposed within the flow channel and is movably connected to the drain valve seat.

[0007] Preferably, the drain valve seat is provided with an inlet, a first outlet and a second outlet, and the flow passage is connected to the inlet, the first outlet and the second outlet respectively.

[0008] Preferably, the system also includes a plug assembly, which is movably mounted on the drain valve seat. The plug assembly is located at the second water outlet and engages with the second water outlet via a magnetic attraction structure. A guide groove is provided on the inner wall of the second water outlet, and the plug assembly moves along the guide groove. The filter assembly is connected to the plug assembly via an elastic connector.

[0009] Preferably, the filter assembly includes a multi-layer mesh filter structure with a gradually decreasing pore size. The multi-layer mesh filter structure includes at least three filter screens, and the pore size of the filter screens gradually decreases from the side near the inlet to the side near the second outlet.

[0010] Preferably, the filter screen surface is provided with an antibacterial coating, which covers the inner and outer surfaces of the filter screen.

[0011] Preferably, the variable diameter adjusting component includes an arc-shaped adjusting plate, which is connected to the drain valve seat via a rotating shaft. The arc-shaped adjusting plate is used to rotate within the flow channel to change the channel cross-sectional area.

[0012] Preferably, a sealing ring is provided between the rotating shaft and the drain valve seat, and the sealing ring is arranged around the rotating shaft.

[0013] Preferably, the magnetic attraction structure includes a magnetic element disposed on the plug assembly and a matching magnetic element disposed on the inner wall of the second outlet, wherein the magnetic element and the matching magnetic element are disposed opposite to each other.

[0014] Preferably, the guide groove includes at least two parallel channels, and the plug assembly is provided with a guide protrusion that cooperates with the channels.

[0015] Preferably, the elastic connector includes a helical spring, one end of which is fixed to the filter assembly and the other end of which is fixed to the plug assembly.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention provides a drainage structure for a coffee machine. The device employs a multi-layer mesh filter structure and a gradually decreasing aperture design, with the aperture decreasing from the inlet to the outlet to effectively intercept impurities. Combined with an antibacterial coating, it inhibits bacterial growth and extends service life. The variable-diameter adjustment component flexibly adjusts the cross-sectional area of ​​the flow channel via an arc-shaped adjustment plate and a rotating shaft, achieving precise flow control. A sealing ring ensures no leakage. The plug assembly uses a magnetic structure in conjunction with a guide groove, ensuring smooth movement and reliable switching. Elastic connectors allow the filter assembly and plug assembly to work together, facilitating disassembly and cleaning. This invention significantly improves anti-clogging performance, ease of operation, and durability through the synergistic optimization of filtration, adjustment, and magnetic attraction, making it particularly suitable for precision equipment such as coffee machines, ensuring smooth and hygienic drainage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a coffee machine drainage structure according to the present invention;

[0019] Figure 2This is a schematic diagram of the structure of one embodiment of the present invention.

[0020] 1. Drain valve seat; 2. Filter assembly; 3. Inlet; 4. First outlet; 5. Second outlet; 6. Flow channel; 7. Plug assembly; 8. Guide groove; 9. Flexible connector; 10. Variable diameter adjustment component; 11. Rotating shaft; 12. Sealing ring; 13. Magnetic component; 14. Matching magnetic component; 15. Guide protrusion. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-2 This utility model relates to a drainage structure for a coffee machine, comprising a drain valve seat 1, wherein the drain valve seat 1 is provided with an inlet 3, a first outlet 4, a second outlet 5, and a flow channel 6, the flow channel 6 being connected to the inlet 3, the first outlet 4, and the second outlet 5 respectively, and a filter assembly 2 being at least partially located within the flow channel 6, the filter assembly 2 being adjacent to the inlet 3; a plug assembly 7 being movably disposed on the drain valve seat 1, the plug assembly 7 being located on the second outlet 5 and cooperating with the second outlet 5 via a magnetic attraction structure, the inner wall of the second outlet 5 being provided with a guide groove 8, the plug assembly 7 being movable along the guide groove 8; the filter assembly 2 and the plug assembly 7 being connected via an elastic connector 9, and a diameter adjusting member 10 being provided within the flow channel 6, the diameter adjusting member 10 being movably connected to the drain valve seat 1.

[0023] Specifically, the drain valve seat 1 is the main structure of the anti-clogging drain valve, used to install other components and provide a fluid flow channel. The filter assembly 2 is used to filter impurities and scale in the fluid to prevent clogging; the plug assembly 7 is used to control the opening and closing of the second outlet 5 to realize the functions of fluid discharge and cleaning.

[0024] In this embodiment, the inlet 3 is located at the upper end of the drain valve seat 1 and is used to connect the water storage device of the coffee machine; the first outlet 4 is located on the side wall of the drain valve seat 1 and is used for normal drainage or connecting to other flow channels; the second outlet 5 is located at the lower end of the drain valve seat 1 and is used to discharge scale or impurities; the flow channel 6 is a through cavity inside the drain valve seat 1, which is connected to the inlet 3, the first outlet 4 and the second outlet 5 respectively, forming a fluid flow path.

[0025] Furthermore, the filter assembly 2 includes a multi-layer mesh filter structure with a gradually decreasing pore size. The multi-layer mesh filter structure includes at least three filter screens, and the pore size of the filter screens gradually decreases from the side closer to the inlet 3 to the side closer to the second outlet 5.

[0026] In this embodiment, the filter assembly 2 is at least partially located within the flow channel 6 and is arranged adjacent to the inlet 3. The filter assembly 2 includes a multi-layer mesh filter structure, specifically comprising at least three layers of filter screens. The pore size of the filter screens gradually decreases from the side near the inlet 3 to the side near the second outlet 5. Specifically, the pore size of the first layer is 0.5 mm, the second layer is 0.3 mm, and the third layer is 0.1 mm. This gradual pore size design can filter impurities and scale of different sizes in stages, improving filtration efficiency and extending the service life of the filter assembly 2. The surface of the filter screen is covered with an antibacterial coating, covering both the inner and outer surfaces of the filter screen, to inhibit bacterial growth and ensure the hygiene of the fluid.

[0027] Furthermore, the variable diameter adjusting member 10 includes an arc-shaped adjusting plate, which is connected to the drain valve seat 1 via a rotating shaft 11. The arc-shaped adjusting plate is used to rotate within the flow channel 6 to change the channel cross-sectional area.

[0028] Specifically, the rotating shaft 11 passes through the drain valve seat 1, and the arc-shaped adjusting plate can rotate within the flow channel 6 to change the channel cross-sectional area; a sealing ring 12 is provided between the rotating shaft 11 and the drain valve seat 1. The sealing ring 12 is made of silicone and is arranged around the rotating shaft 11 to prevent fluid leakage.

[0029] In this embodiment, the plug assembly 7 is movably mounted on the drain valve seat 1, located at the second outlet 5. The plug assembly 7 engages with the second outlet 5 via a magnetic attraction structure. The magnetic attraction structure includes a magnetic element 13 mounted on the plug assembly 7 and a mating magnetic element 14 mounted on the inner wall of the second outlet 5. For example, the magnetic element 13 is a permanent magnet embedded in the bottom of the plug assembly 7, and the mating magnetic element 14 is a ferromagnetic ring fixed to the inner wall of the second outlet 5. The two are arranged opposite each other to generate a magnetic attraction force, ensuring a reliable seal between the plug assembly 7 and the second outlet 5.

[0030] Furthermore, the guide groove 8 includes at least two parallel channels, and the plug assembly 7 is provided with a guide protrusion 15 that cooperates with the channels.

[0031] In this embodiment, the plug assembly 7 is provided with a guide protrusion 15 that cooperates with the channel; the guide protrusion 15 slides along the channel, so that the plug assembly 7 can move up and down relative to the second outlet 5 to realize the opening and closing function; the guide groove 8 ensures the stability of the movement of the plug assembly 7 and avoids deviation or jamming.

[0032] Furthermore, the elastic connector 9 includes a helical spring, one end of which is fixed to the filter assembly 2 and the other end of which is fixed to the plug assembly 7.

[0033] Specifically, one end of the helical spring is fixed to the lower end of the filter assembly 2 by a snap-fit, and the other end is fixed to the upper end of the plug assembly 7 by a threaded connection; the helical spring is made of stainless steel, which has good elasticity and corrosion resistance. When the plug assembly 7 moves downward to open the second outlet 5, the helical spring is stretched and drives the filter assembly 2 downward, thereby facilitating the cleaning of scale on the filter assembly 2.

[0034] The working principle of the coffee machine drainage structure provided by this utility model is as follows:

[0035] In use, the plug assembly 7 closes the second outlet 5 via a magnetic structure. Fluid enters the flow channel 6 from the inlet 3, is filtered by the filter assembly 2, and then flows out from the first outlet 4 for normal operation of the coffee machine. When scale needs to be cleaned, the user uses external force, such as manual pressing or mechanical drive, to move the plug assembly 7 downwards along the guide groove 8, opening the second outlet 5. Simultaneously, the filter assembly 2 moves downwards with the plug assembly 7 via the pull of a coil spring, exposing itself outside the second outlet 5, making it easy for the user to rinse or brush the scale on the filter assembly 2. After cleaning, the plug assembly 7 resets under the action of the magnetic structure and the coil spring, closing the second outlet 5. In addition, the user can adjust the angle of the arc-shaped adjustment plate by rotating the shaft 11 to control the flow rate of the flow channel 6, adapting to different usage scenarios.

[0036] This invention provides a drainage structure for a coffee machine. The device employs a multi-layer mesh filter structure and a gradually decreasing aperture design, with the aperture gradually decreasing from the inlet 3 to the outlet, effectively intercepting impurities. Combined with an antibacterial coating, it inhibits bacterial growth and extends service life. The variable diameter adjustment component 10 flexibly adjusts the cross-sectional area of ​​the flow channel 6 via an arc-shaped adjustment plate and a rotating shaft 11, achieving precise flow control. The sealing ring 12 ensures no leakage. The plug assembly 7 uses a magnetic structure to cooperate with the guide groove 8, ensuring smooth movement and reliable switching. The elastic connector 9 allows the filter assembly 2 and the plug assembly 7 to work together, facilitating disassembly and cleaning. This invention significantly improves anti-clogging performance, ease of operation, and durability through the synergistic optimization of filtration, adjustment, and magnetic attraction, making it particularly suitable for precision equipment such as coffee machines, ensuring smooth and hygienic drainage.

[0037] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A drainage structure for a coffee machine, characterized in that: It includes a drain valve seat (1) with a flow channel (6) and a filter assembly (2) partially disposed in the flow channel (6) for filtering impurities and scale. A variable diameter adjustment component (10) is disposed in the flow channel (6) and is movably connected to the drain valve seat (1).

2. The drainage structure for a coffee machine according to claim 1, characterized in that: The drain valve seat (1) is provided with an inlet (3), a first outlet (4) and a second outlet (5), and the flow passage (6) is connected to the inlet (3), the first outlet (4) and the second outlet (5) respectively.

3. The drainage structure for a coffee machine according to claim 2, characterized in that: It also includes a plug assembly (7), which is movably mounted on the drain valve seat (1). The plug assembly (7) is located at the second outlet (5) and cooperates with the second outlet (5) through a magnetic attraction structure. The inner wall of the second outlet (5) is provided with a guide groove (8), and the plug assembly (7) moves along the guide groove (8). The filter assembly (2) is connected to the plug assembly (7) through an elastic connector (9).

4. The drainage structure for a coffee machine according to claim 3, characterized in that: The filter assembly (2) includes a multi-layer mesh filter structure with a gradually decreasing pore size. The multi-layer mesh filter structure includes at least three filter screens, and the pore size of the filter screens gradually decreases from the side near the inlet (3) to the side near the second outlet (5).

5. The drainage structure for a coffee machine according to claim 4, characterized in that: The filter screen is provided with an antibacterial coating, which covers the inner and outer surfaces of the filter screen.

6. The drainage structure for a coffee machine according to claim 1, characterized in that: The variable diameter adjusting component (10) includes an arc-shaped adjusting plate, which is connected to the drain valve seat (1) via a rotating shaft (11). The arc-shaped adjusting plate is used to rotate within the flow channel (6) to change the channel cross-sectional area.

7. A coffee machine drainage structure according to claim 6, characterized in that: A sealing ring (12) is provided between the rotating shaft (11) and the drain valve seat (1), and the sealing ring (12) is arranged around the rotating shaft (11).

8. The drainage structure for a coffee machine according to claim 3, characterized in that: The magnetic structure includes a magnetic element (13) disposed on the plug assembly (7) and a matching magnetic element (14) disposed on the inner wall of the second outlet (5), wherein the magnetic element (13) and the matching magnetic element (14) are disposed opposite to each other.

9. A coffee machine drainage structure according to claim 3, characterized in that: The guide groove (8) includes at least two parallel channels, and the plug assembly (7) is provided with a guide protrusion (15) that cooperates with the channel.

10. A coffee machine drainage structure according to claim 3, characterized in that: The elastic connector (9) includes a helical spring, one end of which is fixed to the filter assembly (2) and the other end of which is fixed to the plug assembly (7).

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