CN216854463U - Pipeline cleaning device and beverage machine - Google Patents

Abstract

The utility model provides a pipeline cleaning device and a beverage machine, wherein the pipeline cleaning device comprises a cleaning joint, and the cleaning joint comprises: the joint body is internally provided with a first channel, a second channel and a third channel which are mutually communicated, the first channel is used for communicating the liquid supply container, and the second channel and the third channel are respectively used for communicating the water supply source and the drink outlet; the driving mechanism comprises a motor and a valve core driven by the motor, and the motor drives the valve core to move so as to control the cutting off and opening of the first channel; a connector housing to which the motor is mounted, the connector housing including an inlet tube and an outlet tube, a portion of the connector body mounted within the connector housing and operable to move between a locked position in which the connector body is restrained from separating from the connector housing and a released position in which the inlet tube and the outlet tube communicate with the second passageway and the third passageway, respectively; in the release position, the fitting body is allowed to separate from the fitting housing, and the inlet and outlet tubes are disconnected from the second and third passages, respectively.

Description

Pipeline cleaning device and beverage machine

Technical Field

The utility model relates to the technical field of beverage preparation, in particular to a pipeline cleaning device and a beverage machine.

Background

In recent years, with the improvement of living standard and the adjustment of eating habits, the number of people drinking tea and coffee is increasing, and the market demand of the beverage preparation machine is increasing, when a user uses the beverage preparation machine, only tea leaves, coffee beans or bean powder packets need to be put into the beverage preparation machine, and the machine automatically completes the brewing process, so that the beverage is more convenient to prepare, and fresh beverages can be provided for the user.

In order to prepare beverages of different flavors, the beverage preparation machine can also prepare drinks such as milk, milk coffee, milk tea, milk foam, etc., for example, a milk foam machine can be provided on the beverage preparation machine. The milk path system of the drinks needing to be added with milk needs to be cleaned in time so as to prevent the milk left in the milk path system from deteriorating or agglomerating to influence the health and the experience of users.

Beverage preparation machine on the market adopts manual washing milk way system mostly, the user will advance on the milk pipe connects the interface of the play washing water of reserving on the machine by oneself, the realization is to advancing the washing of milk pipe to milk drink export section pipeline, because advance on the milk pipe need insert out the interface of washing water during the washing, milk pipe is last remaining milk stain can pollute near region of interface, and can't add the washing medicament to the washing pipeline, machine maintenance is inconvenient like this, influence user experience, hardly adapt to the convenience store, this kind of needs of office frequently make the drink and the scene of nobody maintenance.

In addition, some milk cleaning system, the milk inlet pipe is connected in series to the cleaning pipeline, wherein the cleaning pipeline is communicated with the pipeline at the milk beverage outlet, a knob is added at the milk inlet pipe, the milk inlet pipe is extruded by rotating the knob, then the cleaning system discharges water from the cleaning pipeline, and the pipeline channel from the cleaning pipeline to the beverage outlet is cleaned. Because the milk inlet pipe is embedded in the machine, the milk inlet pipe is not detached and cleaned, and more milk is left in the milk inlet pipe during cleaning due to the consideration of the operation knob, and automatic cleaning cannot be realized.

For this reason, improvements are required against the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pipeline cleaning device which has a good cleaning effect and can automatically clean a pipeline.

To achieve the above object, the present invention provides a pipe cleaning device, including a cleaning joint, the cleaning joint including:

the joint body is internally provided with a first channel, a second channel and a third channel which are mutually communicated, the first channel is used for communicating the liquid supply container, and the second channel and the third channel are respectively used for communicating the water supply source and the drink outlet;

the driving mechanism comprises a motor and a valve core driven by the motor, and the motor drives the valve core to move so as to control the cutting off and opening of the first channel;

a fitting housing to which the motor is mounted, the fitting housing including an inlet tube and an outlet tube, a portion of the fitting body being mounted within the fitting housing and operable to move between a locked position in which the fitting body is restrained from separation from the fitting housing and a released position in which the inlet tube and the outlet tube are in communication with the second passageway and the third passageway, respectively; in the release position, the fitting body is allowed to separate from the fitting housing, and the inlet and outlet tubes are disconnected from the second and third passages, respectively.

As a further improvement of an embodiment of the present invention, the joint housing is formed with an accommodating cavity, the edge of the accommodating cavity is provided with a limiting block protruding toward the accommodating cavity, the joint body is provided with a step-down groove, the limiting block and the step-down groove are staggered to lock the joint body, and the limiting block and the step-down groove correspond in position to release the joint body.

As a further improvement of an embodiment of the present invention, a T-shaped channel is configured between the first channel, the second channel, and the third channel, the second channel and the third channel are in a straight line, and the valve element is inserted into the first channel between the second channel and the third channel and allows communication between the second channel and the third channel.

As a further improvement of an embodiment of the present invention, the spool is configured as a stepped shaft including a first diameter portion and a second diameter portion, the first diameter portion having a diameter smaller than that of the second diameter portion, the first diameter portion being in interference fit with the first passage to shut off the first passage.

As a further improvement of an embodiment of the present invention, the joint body includes a connecting portion and an operating portion along an extending direction of the first channel, the connecting portion is mounted in the accommodating cavity, the operating portion is configured as a knob for driving the connecting portion to rotate relative to the joint housing, one side of the connecting portion adjacent to the operating portion is provided with a plurality of spaced positioning ribs, and at least one of the positioning ribs abuts against the limiting block to align the locking position and the releasing position.

As a further improvement of an embodiment of the present invention, the joint body includes a joint channel piece and a joint sleeve, the joint sleeve is sleeved outside the joint channel piece, the first channel, the second channel and the third channel are all disposed on the channel piece, and the positioning rib is disposed on the joint sleeve.

As a further improvement of an embodiment of the present invention, the valve further includes a passage joint that is detachably inserted into the first passage, and the valve body is inserted into or pulled out from the passage joint to cut off and open the first passage.

The utility model also aims to provide the beverage machine which has good cleaning effect and can automatically clean the pipeline.

In order to achieve the above object, the present invention provides a beverage machine, which includes the pipeline cleaning device according to any one of the above embodiments.

As a further development of an embodiment of the utility model, further comprising a first valve connected between the water supply and the inlet tube and a second valve connected between the outlet tube and the beverage outlet, the beverage machine having an operating state in which the first valve is closed, the second valve is open, the first passage is open in communication with the third passage; a second state in which the first valve is open, the second valve is closed, and the first passage is open and in communication with the second passage; in a third state, the first valve is open, the second valve is open, and the first passage is closed.

As a further improvement of one embodiment of the present invention, the beverage dispenser further comprises a controller, the motor, the first valve and the second valve are all connected to the controller, the controller controls the motor, the first valve and the second valve to switch between a beverage mode and a first state; in the cleaning agent cleaning mode, the beverage machine is firstly in the second state and then in the first state; and in the automatic cleaning mode, the beverage machine is in a third state.

Compared with the prior art, the utility model has the beneficial effects that: through will connecting the body and setting to can dismantle with connecting the shell, can dismantle the lower joint body and carry out more degree of depth's cleanness. And through the communication of the first channel and the second channel and the communication of the second channel and the third channel, the pipeline at the upstream and the downstream of the cleaning joint can be cleaned.

Drawings

FIG. 1 is a system block diagram of a beverage machine in accordance with a preferred embodiment of the present invention;

FIG. 2 is a perspective view of a cleaning fitting of the line cleaning apparatus according to the preferred embodiment of the present invention;

FIG. 3 is an exploded perspective view of the cleaning joint of FIG. 2;

FIG. 4 is a top view of the cleaning joint of FIG. 2 with the joint body in a locked position;

FIG. 5 is a cross-sectional schematic view of the purge joint of FIG. 4 taken along line A-A with the first passageway in an open position;

FIG. 6 is a schematic cross-sectional view of the line cleaner of FIG. 5 taken along line B-B;

FIG. 7 is a view similar to FIG. 5, with the first passage in a shut-off position;

FIG. 8 is a top view of the purge fitting of FIG. 2 with the fitting body in a release position;

fig. 9 is a schematic cross-sectional view of the line cleaning apparatus of fig. 8 taken along line C-C.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

It will be understood that terms used herein such as "upper," "above," "lower," "below," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

The beverage maker comprises a brewer 41 for brewing the beverage and a water supply 30 for supplying water to the brewer, downstream of the brewer 41 a beverage outlet can be connected, and the beverage maker can further comprise a milk frother 42, which can also supply milk via the liquid supply container 20 and also can supply rinsing water via the water supply 30. In this embodiment, a coffee maker is described as a specific embodiment. In the coffee machine, the line in the line cleaning device corresponds to the milk line in the coffee machine, and therefore in a particular embodiment the line cleaning device is embodied as a milk line cleaning device.

The milk path cleaning device according to the embodiment of the present invention will be described by taking a milk path cleaning device used in a coffee machine as an example. Referring to fig. 1, in the present embodiment, the milk path cleaning device includes a cleaning connector 10, the cleaning connector 10 is used for communicating a liquid supply container 20, a water supply source 30 and a drink outlet 40, where the liquid supply container 20 may be a container for containing milk or a container for containing cleaning liquid for cleaning a pipeline; the water supply source 30 may be a water supply source inside the coffee maker or a water supply source outside the coffee maker, such as a boiler or a water tank connected through a hot water pipe or a cold water pipe; the beverage outlet 40 is an outlet for outputting the beverage. A milk frother 42 for heating milk or/and generating milk froth and a brewer 41 for brewing coffee powder between the water supply 30 and the drink outlet 40 may be provided between the cleaning connection 10 and the drink outlet 40. Of course, various valves may be provided between the cleaning connector 10 and the liquid supply container 20, the water supply source 30, and the beverage outlet 40 for controlling the connection and disconnection of the respective pipes.

Referring to fig. 2 to 5, the cleaning connector 10 includes a connector body 11, a first channel 111, a second channel 112 and a third channel 113 are disposed in the connector body 11 and are communicated with each other, the first channel 111 is used for communicating with the liquid supply container 20, and the second channel 112 is used for communicating with the water supply source 30 and the third channel 113 for communicating with the beverage outlet 40. When the liquid supply container is a milk container, the first passage 111 may also be considered as a milk inlet passage. Thus, the liquid supply container 20 and the water supply source 30 can be communicated through the first passage 111 and the second passage 112, the liquid supply container 20 and the beverage outlet 40 can be communicated through the first passage 111 and the third passage 113, and the water supply source 30 and the beverage outlet 40 can be communicated through the second passage 112 and the third passage 113.

Wherein, connect shell 13 and can install in the coffee machine main part, connect body 11 and need carry the liquid that supplies in the liquid container, like milk, through connecting body 11 to set to and connect shell 13 to dismantle, can dismantle joint body 11 down and carry out more degree of depth's cleanness. Furthermore, the pipeline upstream of the cleaning joint 11 can be cleaned through the communication between the first passage 111 and the second passage 112, and the pipeline downstream of the cleaning joint 11 can be cleaned through the communication between the second passage 112 and the third passage 113. After the cleaning joint 11 is installed, the milk inlet channel can be automatically switched on and off by controlling the movement of the motor 15, so that the purpose of automatic cleaning is realized. Further, the cleaning joint 10 further includes a joint housing 13 and a driving mechanism installed on the joint housing 13, wherein the driving mechanism is used for controlling the on-off of the first channel 111. In this embodiment, the driving mechanism includes a motor 15 and a valve core 16 driven by the motor 15, and the motor 15 drives the valve core 16 to move so as to control the opening and closing of the first channel 111. Preferably, a linear stepper motor is used, and the motor shaft 151 is fixedly connected to the valve core 16 along the axial direction, so that the motor 15 can drive the valve core 16 to move along the axial direction. The motor 15 is mounted to the joint housing 13, the joint housing 13 includes an inlet pipe 132 and an outlet pipe 133, a portion of the joint body 11 is mounted within the joint housing 13 and is operable to move between a locked position in which the joint body 11 is restricted from being separated from the joint housing 13 and a released position in which the inlet pipe 132 and the outlet pipe 133 are respectively in communication with the second passage 112 and the third passage 113; in the release position, the fitting body 11 is allowed to separate from the fitting housing 13, and the inlet and outlet tubes 132, 133 are disconnected from the second and third passages 112, 113, respectively.

Continuing to refer to fig. 3, the joint housing 13 is formed with a containing cavity 135, the edge of the containing cavity 135 is provided with a limiting block 136 protruding toward the containing cavity 135, the joint body 11 is provided with a yielding groove 116, the limiting block 136 is staggered with the yielding groove 116 to lock the joint body 11, and the limiting block 136 corresponds to the yielding groove 116 to release the joint body 11. Thus, when the joint body 11 needs to be detached for cleaning, the joint body is only required to be operated to enable the limiting block 136 to correspond to the receding groove 116, so that the joint body 11 can be separated from the joint shell 13, the operation is very convenient, and deep cleaning of the joint body 11 can be realized.

Wherein, the first channel 111, the second channel 112 and the third channel 113 are configured as T-shaped channels, the second channel 112 and the third channel 113 are on a straight line, the valve core 16 is inserted into the first channel 112 between the second channel 112 and the third channel 113 and allows the communication between the second channel 112 and the third channel 113. In this manner, the joint body 11 can be detached from or attached to the joint housing 13 along the extending direction of the first passage 111 without affecting the communication between the second passage 112 and the third passage 113. Preferably, the valve core 16 is configured as a stepped shaft, and includes a first diameter portion 161 and a second diameter portion 162, the diameter of the first diameter portion 161 is smaller than that of the second diameter portion 162, and the first diameter portion 161 and the first channel 111 are in interference fit to cut off the first channel 111, i.e., block the milk inlet channel. Wherein the diameters of the second passage 112 and the third passage 113 may be set larger than the diameter of the second diameter portion 162 so as not to affect the communication of the second passage 112 to the third passage 113 regardless of whether the first passage 111 is blocked by the spool 16, thereby ensuring that (hot) water flowing into the second passage 112 from the inlet pipe can flow to the outlet pipe through the third passage 113 when it is found that 16 is located in the second passage 112 or the third passage 113.

Further, the joint body 11 includes a connecting portion 115 and an operating portion 117 along the extending direction of the first channel 111, the connecting portion 115 is installed in the accommodating cavity 135, the operating portion 117 is configured as a knob for driving the connecting portion 117 to rotate relative to the joint housing 13, one side of the connecting portion 115 adjacent to the operating portion 117 is provided with a plurality of spaced positioning ribs 118, and at least one of the positioning ribs 118 abuts against the limiting block 136 to find the locking position and the releasing position. When the user connects body 11 in the dismouting, only need rotary joint body 11 to the position of changeing motionless, can realize connecting the dismantlement of body or installing, it is very convenient to operate. In addition, the joint body 11 includes a joint channel member 110 and a joint sleeve 119, the joint sleeve 119 is sleeved outside the joint channel member 110, the first channel 111, the second channel 112 and the third channel 113 are all disposed on the channel member 110, the positioning rib 118 is disposed on the joint sleeve 119, and the joint sleeve 119 and the channel member 110 can be inserted into the corresponding insertion holes 1151 through the two fixing posts 1191 for positioning connection, so as to ensure that the joint sleeve 119 and the channel member 110 can be operated to rotate synchronously. In addition, the joint sleeve 119 can be made of silica gel or rubber, so that the operation hand feeling is improved. Of course, the joint boot 119 and the channel member 110 may be provided in one body to make assembly easier.

In operation, as shown in fig. 4 and 5, the joint body 11 is in the locked position, the stopper 136 is clamped on the connecting portion 115 of the joint body 11, the joint body 11 is restricted from being separated from the joint housing 13 along the extending direction of the first passage 111, and the inlet pipe 132 and the outlet pipe 133 are respectively communicated with the second passage 112 and the third passage 113. As shown in fig. 8 and 9, the joint body 11 is in the release position, that is, the joint body 11 is rotated by about 90 degrees clockwise or counterclockwise relative to the joint housing 13, the positioning rib 118 abuts against the stopper 136 and cannot be rotated further, the stopper 136 is just aligned with the relief groove 116, the inlet pipe 132 and the outlet pipe 133 are disconnected from the second channel 112 and the third channel 113, respectively, and the joint body 11 can be separated from the joint housing 13 along the extending direction of the first channel 111.

In this embodiment, the cleaning joint 11 further includes a passage joint 18, the passage joint 18 is detachably inserted into the first passage 111, and the valve body 16 is inserted into or pulled out of the passage joint 18 to cut off and open the first passage 111. The channel joint 18 is arranged, so that the assembly precision can be further improved, and the valve core 16 is directly matched with the channel joint 18, so that the sealing performance is better.

With continued reference to fig. 1, the coffee maker further includes a first valve 31 connected between the water supply source 30 and the inlet pipe 132 and a second valve 43 connected between the outlet pipe 133 and the beverage outlet, the first valve 31 controlling whether water from the water supply source 30 flows to the cleaning joint 10; the second valve 43 can control whether milk or water in the cleaning fitting 10 flows to the drink outlet 40 or to the inlet of the milk frother 42. The coffee machine has an operating condition in which the first valve 31 is closed, the second valve 43 is open, the first passage 111 is open in communication with the third passage 113; a second state in which the first valve 31 is open, the second valve 43 is closed, and the first passage 111 is open and communicates with the second passage 112; in the third state, the first valve 31 is open, the second valve 43 is open, and the first passage 111 is closed. In the first state, the milk in the liquid supply container 20 can be delivered to the milk foam 42 or the drink outlet 40, and of course, if the liquid supply container 20 is a cleaning liquid container, the cleaning liquid can also be delivered to the milk foam 42 or the drink outlet 40 to achieve milk path cleaning. In the second state, water from the water supply 30 may be introduced into the liquid supply container 20, where the liquid supply container 20 may be a cleaning liquid container for diluting the cleaning agent. In the third state, water from the water supply source 30 may be delivered to the milk frother 42 or the drink outlet 40 to also effect milk circuit cleaning.

In this embodiment, the coffee maker further comprises a controller, the motor 15, the first valve 31 and the second valve 43 are all connected to the controller, and the controller controls the motor 15, the first valve 31 and the second valve 43 to switch between a beverage mode and a first state of the coffee maker; in the manual cleaning mode, the coffee machine is in the second state firstly and then in the first state; detergent wash mode, the coffee maker is in a third state. The controller can be the controller of the coffee machine or an independent controller of the milk path cleaning device.

The operation of the coffee maker may be regulated by a controller that is operatively communicatively connected to the user panel or various other components. The user panel provides options for the user to operate the coffee maker, such as a washing mode, or other various options. The controller is capable of operating various components of the coffee maker in response to user manipulation of the user panel or one or more sensor signals. The controller may comprise a memory and one or more microprocessors, CPUs, etc., such as a general or special purpose microprocessor operable to execute programmed instructions or microcontrol code associated with the operation of the beverage preparation device. The memory may represent random access memory, such as DRAM, or read only memory, such as ROM or FLASH. In one embodiment, the processor executes programming instructions stored in the memory. The memory may be a separate component from the processor or may be on board the processor. Alternatively, the controller may be configured to perform control functions without the use of a microprocessor (e.g., using a combination of discrete analog or digital logic circuits; such as switches, amplifiers, integrators, comparators, flip-flops, gates, etc.) instead of relying on software.

In a specific operation, as shown in fig. 5, the first step 161 of the spool 16 is not inserted into the purge joint in the first state. The channel fitting 18 inserted into the fitting body 11 is in series with the straight channel formed by the second and third channels 112, 113 in the fitting body forming a T-shaped channel. In the drink mode of the coffee machine, the second channel 112 is closed by default (i.e. the inlet pipe does not discharge water), the milk inlet pipe, which is plugged to the channel connection 18, is placed in the liquid supply container containing milk, which is sucked in by the milk frother (venturi principle) through the milk pipe, which is plugged to the channel connection 18, the milk flowing through the first channel 11 to the outlet pipe and finally to the drink outlet. In the cleaning agent cleaning mode, the milk inlet pipe inserted into the channel joint 18 is placed into the liquid supply container 20 filled with the cleaning agent, at this time, the downstream pipeline of the control outlet pipe 133 is closed (specifically, the milk quantity regulating valve at the beverage outlet closes the milk outlet channel), the water of the water supply source 30 is controlled to flow into the inlet pipe 132, the water flows through the second channel 112, enters the channel joint, and then flows into the liquid supply container 20 through the milk pipe, so as to dilute the cleaning agent; after the water outlet is finished, controlling the water of the water supply source 30 to stop the water outlet, and closing the second channel 112 by default; the downstream pipeline of the outlet pipe 133 is controlled to be opened (specifically, the milk quantity regulating valve at the drink outlet opens the milk outlet channel), and the diluted cleaning liquid in the liquid supply container 20 is sucked to the drink outlet 40 under the action of the milk foam device 42, so that the whole milk pipe pipeline is cleaned by the medicament. I.e. in the detergent washing mode, the coffee maker is in the second state first and then in the first state.

Referring to fig. 7, in the third state, in the automatic cleaning mode, the motor shaft 151 has moved upward, and the valve core 16 is driven to move upward to block the milk inlet channel. At this time, the water of the water supply source 30 is controlled to flow into the inlet pipe 132, and the water flows through the second and third passages 112 and 113 between the inlet pipe 132 and the outlet pipe 133 and finally flows out from the beverage outlet 40, so that the milk outlet beverage pipeline is quickly and automatically flushed. This automatic cleaning flushes the entire milk tube line directly from the water supply connected to the coffee machine (or from a water supply heated internally in the coffee machine). Preferably, the controller controls the automatic washing function to be performed once at predetermined time intervals (e.g., 10,20 or 30 minutes, etc.). Therefore, the milk pipeline is ensured not to be deposited with milk liquid, and the whole milk pipeline is always at a constant temperature (when hot water flows through the milk pipeline, the milk pipeline is heated by the way).

Of course, the milk path cleaning device is not limited to the application in coffee machines, but can also be used in other beverage brewing machines, such as tea machines or other devices for brewing beverages.

In the above embodiment, by disposing the joint body 11 detachably from the joint housing 13, the lower joint body 11 can be detached for deeper cleaning. And the upstream and downstream pipes of the cleaning joint 11 can be cleaned by the communication of the first passage 111 and the second passage 112 and the communication of the second passage 112 and the third passage 113. After the cleaning joint 11 is installed, the milk inlet channel can be automatically switched on and off by controlling the movement of the motor 15, so that the purpose of automatic cleaning is realized.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A line cleaning apparatus comprising a cleaning fitting, the cleaning fitting comprising:

the joint body is internally provided with a first channel, a second channel and a third channel which are mutually communicated, the first channel is used for communicating the liquid supply container, and the second channel and the third channel are respectively used for communicating the water supply source and the drink outlet;

the driving mechanism comprises a motor and a valve core driven by the motor, and the motor drives the valve core to move so as to control the cutting off and opening of the first channel;

a fitting housing to which the motor is mounted, the fitting housing including an inlet tube and an outlet tube, a portion of the fitting body mounted within the fitting housing and operable to move between a locked position in which the fitting body is restricted from separation from the fitting housing and a released position in which the inlet and outlet tubes communicate with the second and third passages, respectively; in the release position, the fitting body is allowed to separate from the fitting housing, and the inlet and outlet tubes are disconnected from the second and third passages, respectively.

2. The pipeline cleaning device according to claim 1, wherein the joint housing is formed with a receiving cavity, the edge of the receiving cavity is provided with a limiting block protruding toward the receiving cavity, the joint body is provided with a yielding groove, the limiting block is staggered with the yielding groove to lock the joint body, and the limiting block corresponds to the yielding groove to release the joint body.

3. The line cleaning device according to claim 1, wherein the first channel, the second channel and the third channel are configured as a T-shaped channel therebetween, the second channel and the third channel are aligned, and the valve element is inserted into the first channel between the second channel and the third channel and allows communication between the second channel and the third channel.

4. The line cleaner according to claim 3, wherein the spool is configured as a stepped shaft including a first diameter portion and a second diameter portion, the first diameter portion having a diameter smaller than the second diameter portion, the first diameter portion being in interference fit with the first passage to shut off the first passage.

5. The line cleaning device according to claim 2, wherein the joint body includes a connecting portion and an operating portion along an extending direction of the first passage, the connecting portion is mounted in the receiving cavity, the operating portion is configured as a knob for driving the connecting portion to rotate relative to the joint housing, a side of the connecting portion adjacent to the operating portion is provided with a plurality of spaced positioning ribs, and at least one of the positioning ribs abuts against the limiting block to align the locking position and the releasing position.

6. The pipe cleaning device according to claim 5, wherein the joint body includes a joint passage member and a joint sleeve, the joint sleeve is fitted to an outer side of the joint passage member, the first passage, the second passage and the third passage are provided on the passage member, and the positioning rib is provided on the joint sleeve.

7. The line cleaning apparatus according to claim 1, further comprising a passage joint detachably inserted into the first passage, and wherein the valve body is inserted into or pulled out of the passage joint to cut off and open the first passage.

8. A beverage machine, characterized in that it comprises a line cleaning device according to one of claims 1 to 7.

9. The beverage maker of claim 8, further comprising a first valve connected between the water supply and the inlet tube and a second valve connected between the outlet tube and the beverage outlet, the beverage maker having an operating state in which the first valve is closed, the second valve is open, and the first passage is open in communication with the third passage; a second state in which the first valve is open, the second valve is closed, and the first passage is open and in communication with the second passage; in a third state, the first valve is open, the second valve is open, and the first passage is closed.

10. The beverage maker of claim 9, further comprising a controller, the motor, the first valve, and the second valve each being connected to the controller, the controller controlling the motor, the first valve, and the second valve to switch between a beverage mode in which the beverage maker is in the first state; in the cleaning agent cleaning mode, the beverage machine is in the second state firstly and then in the first state; and in the automatic cleaning mode, the beverage machine is in a third state.

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