Milk supply cleaning device and beverage machine

Abstract

The utility model discloses a milk supply cleaning device, and relates to the technical field of beverage making equipment, a milk suction assembly is provided with a milk supply channel, an inlet of the milk supply channel is communicated with a milk source, and an outlet of the milk supply channel is communicated with an input port of a conveying pipeline; an inlet of the liquid inlet pipeline communicates with a cleaning liquid source, and an outlet communicates with an input port of the conveying pipeline. The on-off state of the milk supply channel can be changed by controlling the valve element assembly; during milk supply, the valve element assembly is controlled to open the milk supply channel, and milk flows to the conveying pipeline through the milk supply channel; during liquid supply, the valve element assembly is controlled to close the milk supply channel, cleaning liquid flows to the conveying pipeline through the liquid inlet pipeline, cleaning of a milk flowing path is completed, no component needs to be dismounted during cleaning, the milk storage container does not need to be switched into the water storage container, and the cleaning process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage making equipment, and further relates to a milk supply cleaning device and a beverage machine. Background Art

[0002] To enhance the quality and innovation of beverages, most coffee machines on the market are equipped with a dedicated milk frother, allowing the addition of milk products (such as milk foam) to coffee beverages, enhancing flavor, mouthfeel, and texture. However, after use, some residual milk droplets or residue may remain inside the mixing chamber or near the milk extraction path, for example, in the suction path near the mixing chamber or within the milk extraction path. Milk beverages can easily become clumped and form milk stains in a short period of time. Failure to promptly clean the relevant internal components and milk delivery lines can increase the complexity and effort of future cleaning. Furthermore, continued use of these components and milk delivery lines without proper or thorough cleaning can not only result in suboptimal milk production and quality, but can also lead to unsanitary issues, negatively impacting the user experience.

[0003] There are two main cleaning methods:

[0004] 1. After making one or more milk foams, remove the milk bottle, pipe parts, and emulsifier separately and clean them under tap water. After cleaning, reinstall them in the coffee machine.

[0005] 2. After completing one or more milk frothings, pour out the remaining milk in the bottle, then fill the milk tank with clean water, then start the milk frothing function, and use the same negative pressure principle of the emulsifier to pump the clean water in the milk tank into the coffee machine for cleaning, and then discharge it at the nipple; sucking milk and sucking water use exactly the same path.

[0006] The current method of cleaning the milk circuit is relatively complicated and the user experience is not good. For technicians in this field, how to achieve cleaning without disassembly is a technical problem that needs to be solved. Utility Model Content

[0007] The core of this utility model is to provide a milk supply cleaning device, which does not require the removal of parts during cleaning, and does not require the milk storage container to be switched to a water storage container. The cleaning process after using milk is simpler and faster. The specific scheme is as follows:

[0008] A milk supply and cleaning device comprises a housing, on which a milk suction assembly, a delivery pipeline and a liquid inlet pipeline are arranged;

[0009] The milk suction assembly is provided with a milk supply channel, the inlet of which is connected to the milk source, and the outlet is connected to the input port of the delivery pipeline; the inlet of the liquid inlet pipeline is connected to the cleaning liquid source, and the outlet is connected to the input port of the delivery pipeline;

[0010] The milk suction assembly is provided with a control valve core assembly for controlling the on-off of the milk supply channel;

[0011] When supplying milk, the control valve core assembly opens the milk supply channel, and milk flows into the delivery pipeline through the milk supply channel;

[0012] When supplying liquid, the control valve core assembly closes the milk supply channel, and the cleaning liquid flows to the delivery pipeline through the liquid inlet pipeline.

[0013] Optionally, a guide cylinder is provided on the milk supply channel perpendicular to the flow direction, and the control valve core assembly includes a sliding column slidably assembled on the guide cylinder;

[0014] The sliding column is provided with a guide portion and a contraction portion, the guide portion is in sliding and sealing contact with the guide cylinder, and the outer diameter of the contraction portion is smaller than the outer diameter of the guide portion;

[0015] When the constriction portion faces the milk supply passage, milk is allowed to flow through, and when the guide portion faces the milk supply passage, the constriction portion is disconnected.

[0016] Optionally, the milk suction assembly is provided with a rebound assembly, and the rebound assembly is used to push the control valve core assembly to return to an initial position.

[0017] Optionally, it further includes an air inlet pipeline, the inlet of which is connected to the air source and the outlet of which is connected to the delivery pipeline.

[0018] Optionally, the outlet direction of the liquid inlet pipeline is opposite to the input direction of the delivery pipeline.

[0019] Optionally, the inner diameter of the outlet of the liquid inlet pipeline is provided with a first tapered section; the inner cavity of the milk suction assembly is provided with a second tapered section between the liquid inlet pipeline and the delivery pipeline;

[0020] The outer side wall of the outlet of the liquid inlet pipeline is provided with a contraction surface for guiding the gas and liquid to change direction.

[0021] Optionally, the air intake pipe is integrated into the milk suction assembly;

[0022] The delivery pipeline and the liquid inlet pipeline are respectively detachably assembled on the milk suction assembly.

[0023] Optionally, the delivery pipeline, the liquid inlet pipeline, and the air inlet pipeline are inserted into the shell in the same direction.

[0024] Optionally, the shell includes an upper shell and a lower shell that are spliced and fixed to each other; the inlet end of the milk supply channel is fixed to the lower shell; the upper shell is provided with a pipeline module for plugging the delivery pipeline, the liquid inlet pipeline, and the air inlet pipeline.

[0025] The utility model also provides a beverage machine, comprising any one of the above-mentioned milk supply cleaning devices.

[0026] The utility model provides a milk supply and cleaning device, wherein a milk suction component is provided with a milk supply channel, the inlet of the milk supply channel is connected to a milk source, and the outlet is connected to an input port of a delivery pipeline; the inlet of a liquid inlet pipeline is connected to a cleaning liquid source, and the outlet is connected to an input port of the delivery pipeline; a control valve core component can change the on-off state of the milk supply channel; when supplying milk, the control valve core component opens the milk supply channel, and milk flows to the delivery pipeline through the milk supply channel; when supplying liquid, the control valve core component closes the milk supply channel, and cleaning liquid flows to the delivery pipeline through the liquid inlet pipeline, thereby completing the cleaning of the milk flow path. During cleaning, there is no need to remove any components, and there is no need to switch a milk storage container to a water storage container, thereby simplifying the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is an axonometric diagram of the overall structure of the milk supply and cleaning device of the present invention;

[0029] Figure 2 This is a front view of the overall structure of the milk supply and cleaning device of the present invention;

[0030] Figure 3 This is a front sectional view of the slide column of the control valve core assembly of the milk supply and cleaning device of the present invention in the open state;

[0031] Figure 4 This is a front view cross-sectional view of the sliding post of the control valve core assembly of the milk supply and cleaning device of the present invention in the closed state;

[0032] Figure 5 A top-down cross-sectional view of the open state of the sliding post of the control valve core assembly for matching the state of the milk suction assembly, the delivery pipeline, and the liquid inlet pipeline;

[0033] Figure 6 A top-down cross-sectional view of the closed state of the sliding post of the control valve core assembly for matching the milk suction assembly, delivery pipeline, and liquid inlet pipeline;

[0034] Figure 7 This is a schematic diagram of the milk feeding path;

[0035] Figure 8 Schematic diagram of the air intake path;

[0036] Figure 9 Schematic diagram of the liquid inlet path.

[0037] The diagram includes:

[0038] Shell 1, upper shell 11, pipeline module 111, lower shell 12;

[0039] The milking assembly 2, the milk supply channel 21, the guide cylinder 211, the control valve core assembly 22, the sliding column 221, the guide portion 2211, the contraction portion 2212, the rebound assembly 23, the second tapered section 24, and the air intake pipe 25;

[0040] Delivery pipeline 3;

[0041] Liquid inlet pipeline 4, first tapered section 41. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the milk supply and cleaning device and the beverage machine of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] Combine Figure 1 、 Figure 2 As shown, the present invention provides a milk supply and cleaning device that can be used for both milk supply and cleaning. For ease of description, this article primarily uses milk as an example, but it can also be applied to other types of milk (such as soy milk) and other liquid beverages for both supply and cleaning. The cleaning liquid used for cleaning can be plain water or a liquid containing a detergent.

[0044] The milk supply cleaning device comprises a housing 1, which provides mounting support for other components and can provide a certain degree of protection for the components installed therein.

[0045] Combine Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the housing 1 is provided with a milking assembly 2, a delivery pipeline 3, and a liquid inlet pipeline 4. The milking assembly 2 is provided with a milk supply channel 21 for circulating milk. The inlet of the milk supply channel 21 is connected to a milk source, and the outlet is connected to the input port of the delivery pipeline 3. The milk source can be a container for holding milk (e.g., a milk bottle). Figure 5The figure shows the milk supply state when the milk supply channel 21 is turned on, wherein the arrows indicate the direction of milk flow. The milk supply channel 21 in this embodiment is a straight channel, and milk flows in from the lower inlet and flows out from the upper outlet.

[0046] The inlet of the liquid inlet pipeline 4 is connected to the cleaning liquid source, and the outlet is connected to the input port of the delivery pipeline 3. The liquid source can be a water bottle containing clean water, or it can be directly connected to the municipal water supply pipeline; Figure 6 The figure shows the state of the cleaning liquid flowing through the liquid inlet pipeline 4, in which the arrow indicates the flow direction of the cleaning liquid. The channel in the liquid inlet pipeline 4 in this embodiment is roughly an "L"-shaped bending path, and the cleaning liquid flows in from the inlet on the upper right and flows out from the outlet on the lower left.

[0047] The milking assembly 2 is equipped with a control valve core assembly 22 for controlling the opening and closing of the milk supply channel 21. "Open" and "off" represent the two states of the milk supply channel 21. "Open" means that the inlet and outlet of the milk supply channel 21 are open, allowing milk to flow; "off" means that the inlet and outlet of the milk supply channel 21 are blocked, preventing milk from flowing. The control valve core assembly 22 can be a separate, integral structure, with the open and closed states switched by the displacement of the control valve core assembly 22 relative to the milk supply channel 21. The control valve core assembly 22 can also be composed of multiple relatively movable components, with some components of the control valve core assembly 22 fixed to the milk supply channel 21 and others movable, with the open and closed states switched by the movement of several movable components of the control valve core assembly 22. In the milk supply and cleaning device of the present invention, the delivery pipeline 3 is used to transport and discharge liquids, and can receive and discharge both milk and cleaning fluid. The outlet of the milk supply channel 21 and the outlet of the liquid inlet pipeline 4 can both be connected to the input of the delivery pipeline 3. Milk is mainly discharged outward through the delivery pipeline 3, so the cleaning liquid mainly cleans the delivery pipeline 3 and subsequent pipelines, and can also clean the inner cavity of the milk suction component 2 that comes into contact with the milk.

[0048] Combine Figure 5 As shown, when milk is supplied, the control valve core assembly 22 opens the milk supply channel 21, and the milk flows through the milk supply channel 21 to the delivery pipeline 3. It should be noted that the power required for the milk flow is provided by a related liquid pump, which can be set on the pipeline connected to the outlet of the delivery pipeline 3.

[0049] Combine Figure 6As shown, when supplying milk, the control valve core assembly 22 closes the milk supply channel 21, allowing cleaning fluid to flow through the liquid inlet line 4 to the delivery line 3. Since the milk supply channel 21 is blocked by the control valve core assembly 22, cleaning fluid only enters through the liquid inlet line 4, flows through the milk suction assembly 2 and the delivery line 3 for flushing, and then is discharged from the output port of the delivery line 3. Cleaning fluid does not flow back through the milk supply channel 21 into the milk bottle. The blocking of the milk supply channel 21 by the control valve core assembly 22 suppresses the siphon effect, preventing siphoning of milk from the milk bottle during the flushing process, which could affect the flushing effect.

[0050] From the above description of the milk supply process and the cleaning process, it can be seen that the milk supply cleaning device of the present invention can clean the pipe through which the milk passes after milk supply. During cleaning, the state of the milk supply channel 21 can be switched to remain closed. During cleaning, no parts need to be removed, and there is no need to switch the milk storage container to a water storage container. Complex manual intervention is not required, thus simplifying the cleaning process.

[0051] On the basis of the above scheme, the present invention sets a guide cylinder 211 on the milk supply channel 21 perpendicular to the flow direction, combined with Figure 5 、 Figure 6 As shown, the structure in the top view is shown, the milk supply channel 21 is extended in the transverse direction, and an expanded guide cylinder 211 is set in the middle position of the milk supply channel 21. The guide cylinder 211 is set vertically, and the inner diameter of the guide cylinder 211 at each position along the axial direction is equal.

[0052] The control valve core assembly 22 includes a slide column 221 slidably assembled on the guide cylinder 211, Figure 3 、 Figure 4 The sliding column 221 is provided with a guide portion 2211 and a contraction portion 2212. The guide portion 2211 is a columnar structure. The outer diameter of the guide portion 2211 at each position along the axial direction is equal. The guide portion 2211 is in sliding and sealing contact with the guide cylinder 211. The outer diameter of the contraction portion 2212 is smaller than the outer diameter of the guide portion 2211. Therefore, an annular gap is formed between the contraction portion 2212 and the guide cylinder 211. When the contraction portion 2212 is facing the milk supply channel 21, milk is allowed to flow through. When the guide portion 2211 is facing the milk supply channel 21, the gap is cut off. The axial height of the contraction portion 2212 should be greater than the inner diameter of the milk supply channel 21 to ensure that the milk supply channel 21 can face the contraction portion 2212, so that the milk flows more smoothly. The contraction portion 2212 can be a columnar structure with a smaller outer diameter, or a gradient structure with a thinner middle and thicker ends, or a gradient structure with a thicker middle and thinner ends.

[0053] The control valve core assembly 22 is also provided with a slider for smoother sliding. The slider can match the slideway provided in the housing 1 to provide guidance for the translation of the control valve core assembly 22 .

[0054] The milking assembly 2 is provided with a rebound assembly 23, which is used to push the control valve core assembly 22 back to the initial position; Figure 3 、 Figure 4 As shown, the rebound assembly 23 is located below the control valve core assembly 22. The upper end of the rebound assembly 23 is mounted on the positioning post of the control valve core assembly 22, and the lower end is mounted on the positioning post of the bottom plate of the housing 1. The rebound assembly 23 provides an upward elastic force to the control valve core assembly 22, causing the control valve core assembly 22 to rebound upward. In the initial position, the guide portion 2211 is closed and faces the milk supply channel 21. Only when the control valve core assembly 22 is pressed downward does the contraction portion 2212 open and face the milk supply channel 21.

[0055] It should be noted that the structure for pressing the control valve core assembly 22 downward can be an automatic structure, such as a cylinder, a motor-driven push rod, etc., or a manual pressing structure, and these specific driving methods are all included in the scope of protection of the present utility model. It should also be added that the rebound assembly 23 can also be omitted, and a gear structure can be matched between the control valve core assembly 22 and the housing 1 to limit the control valve core assembly 22 to a high position and a low position. When in the high position, the milk supply channel 21 is closed, and when in the low position, the milk supply channel 21 is opened.

[0056] On the basis of any of the above technical solutions and their mutual combination, the milk supply cleaning device of the present invention further comprises an air intake pipe 25, the inlet of the air intake pipe 25 is connected to the air source, and the outlet is connected to the delivery pipe 3; Figure 6 As shown, in this embodiment, the upper end of the air intake line 25 is an inlet, and the lower end is an outlet. By providing the air intake line 25, the air entering through the air intake line 25 can be discharged through the outlet of the delivery line 3. The discharged air can be used to froth milk or to accelerate drying after cleaning. When frothing milk, air is taken in while milk is being delivered.

[0057] Combine Figure 7 , which shows the flow path of milk, Figure 8 shows the flow path of the gas, Figure 9 The flow path of the cleaning liquid is shown. Three separate pipelines deliver milk, gas, and cleaning liquid, meeting diverse milk taste requirements while also fulfilling cleaning needs. It should be noted that to prevent interference between the milk supply, air intake, and liquid intake during cleaning, shut-off valves can be installed on the air intake line 25 and the liquid intake line 4, respectively, to prevent the cleaning liquid from being siphoned into the milk supply.

[0058] In one embodiment, the outlet direction of the liquid inlet pipeline 4 in the present invention is directly opposite to the input direction of the delivery pipeline 3, such as Figure 6As shown, the outlet direction of the liquid inlet pipeline 4 is toward the left side to output liquid, and the input direction of the delivery pipeline 3 is toward the left side to receive liquid. The cleaning liquid is directly facing the delivery pipeline 3, making the flow process of the cleaning liquid smoother.

[0059] The inner diameter of the outlet of the liquid inlet pipeline 4 is provided with a first tapered section 41. The first tapered section 41 contracts in a conical shape and gradually contracts along the flow direction of the cleaning liquid. This can accelerate the flow rate of the liquid sprayed out of the liquid inlet pipeline 4, enhance the impact force of the liquid and ensure an effective cleaning effect.

[0060] The inner cavity of the milk suction assembly 2 is located between the liquid inlet pipeline 4 and the delivery pipeline 3 and is provided with a second tapered section 24. The second tapered section 24 is tapered and gradually shrinks along the flow direction of the liquid. The second tapered section can be provided with two sections.

[0061] The outer wall of the outlet of the liquid inlet pipe 4 is provided with a converging surface for redirecting gas and liquid. An annular gap is formed between the converging surface and the second tapered section 24, allowing milk and gas to flow toward the delivery pipe 3. When milk flows from the milk supply channel 21 and gas flows from the air inlet pipe 25, they impact the converging surface of the outer wall of the outlet of the liquid inlet pipe 4, redirecting their flow and ensuring a more even mixing of the milk and gas during milk frothing.

[0062] The air intake pipe 25 of the present invention is integrated into the milk sucking assembly 2. Figure 5 、 Figure 6 As shown, in this embodiment, the direction of the air intake pipeline 25 is arranged opposite to the delivery pipeline 3.

[0063] The delivery pipeline 3 and the liquid inlet pipeline 4 are respectively detachably assembled on the milk suction component 2. Figure 5 、 Figure 6 As shown, the output port (right end) of the delivery pipeline 3 is plugged into and assembled on the left side of the milk suction component 2, and the outlet end (left end) of the liquid inlet pipeline 4 is plugged into and assembled on the right side of the milk suction component 2. The split structure and plug-in assembly are adopted to facilitate processing and manufacturing.

[0064] The delivery pipeline 3, the liquid inlet pipeline 4, and the air inlet pipeline 25 are inserted into the housing 1 in the same direction. Figure 5 、 Figure 6 The delivery pipeline 3 and the liquid inlet pipeline 4 are respectively "L"-shaped elbows, the air inlet pipeline 25 is a straight pipe, the output port of the delivery pipeline 3 faces upward, the inlet of the liquid inlet pipeline 4 faces upward, and the inlet of the air inlet pipeline 25 faces upward. The three are arranged in parallel to facilitate one-time plug-in assembly.

[0065] Combine Figure 1 、 Figure 3As shown, the shell 1 includes an upper shell 11 and a lower shell 12 that are spliced and fixed to each other. The upper shell 11 and the lower shell 12 are semi-enclosed structures respectively, and are spliced together to form the shell 1. The upper shell 11 and the lower shell 12 can be connected by snap-fit fixing or laser welding.

[0066] The inlet end of the milk supply channel 21 is fixed to the lower shell 12 and exposed to the outside, and is used to connect to the milk source through a pipeline. The upper shell 11 is provided with a pipeline module 111 for plugging the delivery pipeline 3, the liquid inlet pipeline 4, and the air inlet pipeline 25. Figure 1 As shown, the pipe module 111 is provided with two upward pipes and one downward pipe, and the two upward pipes are used for air intake ( Figure 1 hollow arrow) and into the cleaning fluid ( Figure 1 The delivery pipe 3, the liquid inlet pipe 4, and the air inlet pipe 25 are laterally connected to the pipe module 111 and connected to the external pipe through the pipe module 111.

[0067] The utility model also provides a beverage machine, comprising the above-mentioned milk supply cleaning device. The beverage machine can achieve the same technical effect, and the beverage machine can be a coffee machine.

[0068] This innovative milk supply and cleaning device allows users to switch modes to suit their needs. This dual-use milk frother features a control valve assembly that blocks the connection between the milk supply channel and the milk suction port, eliminating the need to remove the bottle. It automatically opens when milk is needed and closes automatically when it's finished. The control valve assembly moves between the milk supply channel and the milk suction port, blocking them and preventing water from flowing into the bottle during the cleaning process.

[0069] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A milk supply cleaning device, characterized in that: It comprises a housing (1), on which a milking assembly (2), a delivery pipeline (3) and a liquid inlet pipeline (4) are arranged; The milk suction assembly (2) is provided with a milk supply channel (21), the inlet of which is connected to the milk source, and the outlet of which is connected to the input port of the delivery pipeline (3); the inlet of the liquid inlet pipeline (4) is connected to the cleaning liquid source, and the outlet of the liquid inlet pipeline (4) is connected to the input port of the delivery pipeline (3); The milk suction assembly (2) is provided with a control valve core assembly (22) for controlling the on / off of the milk supply channel (21); When milk is supplied, the control valve core assembly (22) opens the milk supply channel (21), and milk flows through the milk supply channel (21) to the delivery pipeline (3); When liquid is supplied, the control valve core assembly (22) closes the milk supply channel (21), and the cleaning liquid flows through the liquid inlet pipeline (4) to the delivery pipeline (3).

2. The milk supply cleaning device according to claim 1, characterized in that: A guide cylinder (211) is provided on the milk supply channel (21) perpendicular to the flow direction, and the control valve core assembly (22) includes a slide column (221) slidably assembled on the guide cylinder (211); The sliding column (221) is provided with a guide portion (2211) and a contraction portion (2212), the guide portion (2211) is in sliding and sealing contact with the guide cylinder (211), and the outer diameter of the contraction portion (2212) is smaller than the outer diameter of the guide portion (2211); When the contraction portion (2212) faces the milk supply channel (21), milk is allowed to flow through, and when the guide portion (2211) faces the milk supply channel (21), the milk is disconnected.

3. The milk supply cleaning device according to claim 2, characterized in that: The milk suction assembly (2) is provided with a rebound assembly (23), and the rebound assembly (23) is used to push the control valve core assembly (22) to return to an initial position.

4. The milk supply cleaning device according to any one of claims 1 to 3, characterized in that: It also includes an air inlet pipeline (25), the inlet of which is connected to the air source and the outlet of which is connected to the delivery pipeline (3).

5. The milk supply cleaning device according to claim 4, characterized in that: The outlet direction of the liquid inlet pipeline (4) is directly opposite to the input direction of the delivery pipeline (3).

6. The milk supply cleaning device according to claim 5, characterized in that: The inner diameter of the outlet of the liquid inlet pipeline (4) is provided with a first tapered section (41); the inner cavity of the milk suction assembly (2) is provided with a second tapered section (24) between the liquid inlet pipeline (4) and the delivery pipeline (3); The outer side wall of the outlet of the liquid inlet pipeline (4) is provided with a contraction surface for guiding the gas and liquid to change direction.

7. The milk supply cleaning device according to claim 5, characterized in that: The air inlet pipe (25) is integrated into the milk suction assembly (2); The delivery pipeline (3) and the liquid inlet pipeline (4) are respectively detachably assembled on the milk suction assembly (2).

8. The milk supply cleaning device according to claim 7, characterized in that: The delivery pipeline (3), the liquid inlet pipeline (4), and the air inlet pipeline (25) are inserted into the housing (1) in the same direction.

9. The milk supply cleaning device according to claim 8, characterized in that: The housing (1) comprises an upper shell (11) and a lower shell (12) which are spliced and fixed to each other; the inlet end of the milk supply channel (21) is fixed to the lower shell (12); and the upper shell (11) is provided with a pipeline module (111) for plugging the delivery pipeline (3), the liquid inlet pipeline (4), and the air inlet pipeline (25).

10. A beverage machine, characterized in that: The invention comprises the milk supply cleaning device according to any one of claims 1 to 9.

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