Hot water vapor independent generation and one-way cleaning system of beverage machine production pipeline

Abstract

The invention discloses a hot water vapor independent generation and one-way cleaning system of a beverage machine product outlet pipeline. A cleaning pipeline of the system comprises a plurality of mutually communicated branch pipelines, such as a steam supply branch pipe, a hot water supply branch pipe, a hot product washing pipeline and a cold product washing pipeline, which can be respectively connected with a hot water source and a steam source. A shutoff valve is arranged to control on-off of a main pipeline and a cleaning pipeline, and a one-way valve is used for guiding cleaning media to flow unidirectionally. An independent steam generation device, a water heating device and respective water supply systems are arranged, the temperature is accurately controlled by means of a temperature detection unit and a temperature control switch, and meanwhile, a safety pipeline, a pressure detection unit and a safety valve are arranged to guarantee the safety of equipment. The system effectively solves the problems that a traditional beverage machine pipeline is not thoroughly cleaned, the mode is single, and the integration degree of a hot water steam generating system is low, hot water or steam can be used for conducting one-way cleaning on the pipeline, stains and bacteria are efficiently removed, it is ensured that beverages are sanitary, and the cleaning efficiency and the using performance of the beverage machine are improved.

Description

Technical Field

[0001] The invention relates to the field of pipeline cleaning, and in particular to a hot water steam independent generation and one-way cleaning system for a beverage machine dispensing pipeline. Background Art

[0002] In the beverage machine industry, as consumers' requirements for beverage quality and hygiene standards become increasingly stringent, the cleaning of beverage machine output pipelines has become a key factor affecting product performance and user experience. At present, traditional beverage machines have many defects in pipeline cleaning. On the one hand, the cleaning method is relatively simple, and most of them rely on a simple forward flushing process. This method is difficult to comprehensively and effectively clean the complex structures and dead corners in the pipeline, resulting in residual beverage stains and breeding bacteria in the beverage making process. It is very easy to mix into the newly made beverage, which not only affects the taste of the beverage, but also poses a potential threat to consumers' health. For example, sticky stains such as coffee grounds and milk stains adhere to the inner wall of the pipeline, and conventional forward flushing cannot completely remove them. Long-term accumulation will produce odors and reduce the quality of beverages.

[0003] On the other hand, the hot water and steam generation systems of most beverage machines have a low degree of integration. When cleaning, it is impossible to flexibly select the appropriate cleaning medium according to the characteristics of the stains, and the cleaning efficiency is low. For example, when facing stubborn grease stains, hot water cleaning is not effective, and steam cleaning is difficult to achieve conveniently, making cleaning time-consuming and laborious, and unable to meet the needs of consumers for efficient cleaning of beverage machines in modern fast-paced life. In addition, low integration may also lead to problems such as complex equipment structure, large size, and increased energy consumption, limiting the further development of beverage machines. These deficiencies urgently need to be solved through innovative technologies to improve the overall performance and market competitiveness of beverage machines. Summary of the invention

[0004] The present invention provides a hot water steam independent generation and one-way cleaning system for the beverage machine's production pipeline. The present invention aims to overcome the outstanding problems existing in the existing beverage machine in terms of pipeline cleaning. First, it solves the problem of the single cleaning method of the traditional beverage machine pipeline, breaks through the limitation of relying solely on forward flushing, and realizes the use of hot water and steam as a variety of cleaning media for cleaning, so as to comprehensively clean various areas in the pipeline, especially complex structures and dead corners. Second, it improves the low integration of the hot water and steam generation system, so that the generation and supply of hot water and steam are closely coordinated with the cleaning process, and the appropriate cleaning medium is flexibly selected according to the characteristics of the stains to improve the cleaning efficiency. Third, it solves the problem that the beverage is easily contaminated due to incomplete pipeline cleaning. By optimizing the design of the cleaning system, it ensures that the beverage stains and bacteria remaining in the pipeline are effectively removed, and the taste of the beverage and the health of consumers are guaranteed, thereby improving the overall performance and user experience of the beverage machine.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] The hot water steam of the beverage machine output pipeline is independently generated and cleaned in one direction, which is characterized by:

[0007] The cleaning pipeline 80 includes a plurality of branch pipelines interconnected with each other, which at least include a steam supply branch pipe 81 and a hot water supply branch pipe 82; wherein the port of the hot water supply branch pipe 82 is connected to the hot water source through a first valve V11; and the port of the steam supply branch pipe 81 is connected to the steam source through a second valve V12;

[0008] The shut-off valve V01 is installed between the conveying unit P3 and the heating unit G1 of the hot product main line 30; the shut-off valve V02 is installed between the conveying unit P2 and the valve V06 of the cold product main line 10; the shut-off valve V01 and the shut-off valve V02 are used to control the on / off of the pipeline;

[0009] The branch pipelines of the cleaning pipeline 80 also include a hot product washing pipeline 85 and a cold product washing pipeline 86, and all the branch pipelines of the cleaning pipeline 80 are connected to each other; the port of the hot product washing pipeline 85 is connected to the hot product main pipeline 30 between the shut-off valve V01 and the heating unit G1; the port of the cold product washing pipeline 86 is connected to the cold product main pipeline 10 between the shut-off valve V02 and the valve V06;

[0010] The hot product washing pipeline 85 is provided with a shut-off valve V09 and a one-way valve Y3, and the one-way valve Y3 only allows the cleaning medium in the hot product washing pipeline 85 to flow into the hot product main pipeline 30;

[0011] The cold product washing pipeline 86 is installed with a shut-off valve V10 and a one-way valve Y2 , and the one-way valve Y2 allows the cleaning medium in the cold product washing pipeline 85 to flow into the cold product main pipeline 10 .

[0012] Furthermore, the steam generating device G3 is used to heat water to generate steam; the second valve V12 is connected to the steam outlet of the steam generating device G3 through the first air supply pipeline.

[0013] Furthermore, the steam generating device water supply system 90 is used to supply water to the steam generating device G3, and includes a first water tank 91, a first water supply pipeline 92, a filter F2, a pump P4, and a shut-off valve V13; one end of the first water supply pipeline 92 extends into the first water tank 91, and the first water supply pipeline 92 is connected to the water cavity of the steam generating device G3; the first water supply pipeline 92 is sequentially installed with a filter F2, a pump P4, and a shut-off valve V13; wherein the filter F2 is used to filter the water quality.

[0014] Furthermore, the water heating device G2 is used to heat water; the first valve V11 is connected to the water cavity of the water heating device G2 through a first hot water supply pipeline.

[0015] Furthermore, the water heating device water supply system 100 is used to supply water to the water cavity of the water heating device G2; the water heating device water supply system 100 includes a second water tank 101, a second water supply pipe 102, a filter F1, a pump P1, and a one-way valve Y1; one end of the second water supply pipe 102 extends into the second water tank 101, and the other end of the second water supply pipe 102 is connected to the water cavity of the water heating device G2; the second water supply pipe 102 is sequentially installed with a filter F1, a pump P1, and a one-way valve Y1.

[0016] Furthermore, the water level probe LL1 is installed in the water heating device G2 to identify the water level in the water heating device G2.

[0017] Further, the temperature control switch KC1 is fixed to the outer wall of the water heating device G2, and the temperature control switch KC1 is used to detect the surface temperature of the water heating device G2, and the temperature control switch KC1 is connected to the circuit of the water heating device G2;

[0018] The temperature control switch KC2 is used to control the on / off power of the water heating device G2 according to a preset temperature.

[0019] Furthermore, the temperature control switch KC2 is fixed to the outer surface of the steam generating device G3, and the temperature control switch KC1 is used to detect the surface temperature of the water heating device G2. The temperature control switch KC2 is connected to the circuit of the water heating device G2, and the temperature control switch KC2 is used to control the on / off power of the water heating device G2 according to a preset temperature.

[0020] Furthermore, it also includes a safety pipe 130, a pressure detection unit PG1, and a safety valve R1; one end of the safety pipe 130 is connected to the water cavity of the water heating device G2, and the other end of the safety pipe 130 is connected to the waste liquid pipeline 60 or directly extends into the waste liquid treatment unit 70; and the pressure detection unit PG1 and the safety valve R1 are installed on the safety pipe 130; the pressure detection unit PG1 is used to detect the water pressure in the water heating device G2;

[0021] When the water pressure in the water heating device G2 exceeds a set value, the safety valve R1 is turned on to discharge the excess water in the water heating device G2 to the waste liquid treatment unit 70 through the safety pipe 130 .

[0022] Further, the second valve V12 is a two-position three-way valve; the three ports of the second valve V12 are respectively connected to the first end of the steam exhaust pipeline 140, the port of the steam supply branch pipe 81, and the end of the first air supply pipeline away from the steam generating device G3; the second valve V12 is used to switch the steam supply branch pipe 81 or the steam exhaust pipeline 140 to be connected to the first air supply pipeline;

[0023] The second end of the steam exhaust pipe 140 is communicated with the waste liquid pipeline 60 or directly extends into the waste liquid treatment unit 70 .

[0024] The beneficial effects of the present invention are:

[0025] Significantly improved cleaning effect: Through the steam supply branch and the hot water supply branch, steam and hot water can be introduced as cleaning media respectively to effectively clean different types of stains. For example, hot water can initially dissolve sticky stains, and steam can not only further clean with its high temperature characteristics, but also disinfect and sterilize the pipeline, remove bacteria and other microorganisms, ensure more thorough cleaning of the pipeline, ensure the hygiene and safety of beverages, and improve the quality of beverages.

[0026] The system operates stably, safely and reliably: Both the steam generator and the water heating device are equipped with independent water supply systems, and the various components work together with a high degree of integration. The filter in the water supply system can effectively filter impurities in the water, ensure the quality of water entering the device, and extend the service life of the equipment. At the same time, the safety pipe, pressure detection unit and safety valve are set up to monitor the water pressure in the water heating device in real time. Once the water pressure exceeds the set value, the safety valve automatically opens to discharge excess water to the waste liquid treatment unit to avoid damage to the equipment due to excessive water pressure and ensure safe and stable operation of the equipment.

[0027] Easy to operate and adaptable: The various valves in the system, such as shut-off valves and one-way valves, are reasonably arranged and easy to control. By simply operating these valves, you can select the cleaning medium, control the on-off of the pipeline, and guide the flow of the cleaning medium. Whether it is the hot product main line or the cold product main line, it can be cleaned conveniently to meet different cleaning needs, which improves the convenience of using the beverage machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention.

[0029] Reference table of reference numerals:

[0030] A first raw material box 1, a second raw material box 2;

[0031] Cold product main line 10, cold product head 20, hot product head 40, hot product main line 30, drain tank 50, waste liquid pipeline 60, waste liquid treatment unit 70, raw material box, liquid delivery unit;

[0032] Cleaning pipeline 80, steam supply branch pipe 81, hot water supply branch pipe 82, hot product washing pipeline 85, and cold product washing pipeline 86. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0034] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0035] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] First, the beverage machine product pipeline is introduced. The beverage machine product pipeline includes a cold product main pipeline 10, a cold product head 20, a hot product main pipeline 30, a hot product head 40, a drain tank 50, a waste liquid pipeline 60, a waste liquid treatment unit 70, a raw material box, and a liquid conveying unit; wherein, the discharge end of the cold product main pipeline 10 is directly or indirectly connected to the cold product head 20, for example, a valve is installed between the two. The discharge end of the hot product main pipeline 30 is directly or indirectly connected to the hot product head 40, for example, a valve is installed between the two; a heating unit G1 is installed on the hot product main pipeline 30, and the heating unit G1 is used to heat the liquid raw material conveyed by the hot product main pipeline 30. The raw material box is used to contain raw materials, and the feed end of the cold product main pipeline 10 and the feed end of the hot product main pipeline 30 are connected to the raw material box. The liquid delivery unit P2 / P3 is installed on the hot product main line 30 and the cold product main line 10, and the liquid delivery unit is used to deliver liquid. The hot product main line 30 is used to deliver hot drinks, and the cold product main line 10 is used to deliver cold drinks. Furthermore, in order to maintain the quality of the beverage, a refrigerated space is also provided, in which the raw material box is placed. In addition, there are two raw material boxes, namely the first raw material box 1 and the second raw material box 2. The feed end of the cold product main line 10 extends into the first raw material box 1, and the feed end of the hot product main line 30 extends into the second raw material box 2. Furthermore, the drain tank 50 is located directly below the cold product head 20 and the hot product head 40, and the drain tank 50 is used to receive the liquid dripping from the cold product head 20 and the hot product head 40. The waste liquid treatment unit 70 is a container or drainage pipe for recovering waste liquid. One end of the waste liquid pipeline 60 is connected to the drain port of the drain tank 50, and the other end of the waste liquid pipeline 60 extends into the waste liquid treatment unit 70. The temperature detection unit T2 is used to detect the water temperature in the heating unit G1, and the heating can be adjusted in real time according to the temperature feedback to ensure that the output milk temperature is at the set temperature.

[0037] In order to maintain the hygiene of the pipeline, it is necessary to clean the pipeline regularly; the specific plan is as follows.

[0038] The hot water steam of the beverage machine output pipeline is independently generated and has a one-way cleaning system.

[0039] The cleaning pipeline 80 includes a plurality of branch pipelines interconnected with each other, including at least a steam supply branch 81 and a hot water supply branch 82; wherein the port of the hot water supply branch 82 is connected to the hot water source via a first valve V11; and the port of the steam supply branch 81 is connected to the steam source via a second valve V12.

[0040] The shut-off valve V01 is installed between the conveying unit P3 and the heating unit G1 of the hot product main line 30; the shut-off valve V02 is installed between the conveying unit P2 and the valve V06 of the cold product main line 10; the shut-off valves V01 and V02 are used to control the on / off of the pipeline.

[0041] The branch pipelines of the cleaning pipeline 80 also include a hot product washing pipeline 85 and a cold product washing pipeline 86, and all the branch pipelines of the cleaning pipeline 80 are connected to each other. The port of the hot product washing pipeline 85 is connected to the hot product main pipeline 30 between the shut-off valve V01 and the heating unit G1; the port of the cold product washing pipeline 86 is connected to the cold product main pipeline 10 between the shut-off valve V02 and the valve V06.

[0042] The hot product washing pipeline 85 is installed with a shut-off valve V09 and a one-way valve Y3 , and the one-way valve Y3 only allows the cleaning medium in the hot product washing pipeline 85 to flow into the hot product main pipeline 30 .

[0043] The cold product washing pipeline 86 is installed with a shut-off valve V10 and a one-way valve Y2 , and the one-way valve Y2 allows the cleaning medium in the cold product washing pipeline 85 to flow into the cold product main pipeline 10 .

[0044] In summary, close the shut-off valve V01 and / or the shut-off valve V02; open the shut-off valve V09 and / or the shut-off valve V10; allow the cleaning medium (hot water) to enter the cleaning pipeline 80 through the first valve V11, or allow the cleaning medium (steam) to enter the cleaning pipeline 80 through the second valve V12; the cleaning medium can enter the cold product main pipeline 10 and / or the hot product main pipeline 30 from the cleaning pipeline 80, and finally be discharged from the cold product head 20 and / or the hot product head 40.

[0045] Furthermore, the steam generating device G3 is used to heat water to generate steam; the second valve V12 is connected to the steam outlet of the steam generating device G3 through the first air supply pipeline.

[0046] Furthermore, the steam generating device water supply system 90 is used to supply water to the steam generating device G3, and includes a first water tank 91, a first water supply pipeline 92, a filter F2, a pump P4, and a shut-off valve V13; one end of the first water supply pipeline 92 extends into the first water tank 91, and the first water supply pipeline 92 is connected to the water cavity of the steam generating device G3; the first water supply pipeline 92 is sequentially installed with a filter F2, a pump P4, and a shut-off valve V13; wherein the filter F2 is used to filter the water quality.

[0047] Furthermore, the water heating device G2 is used to heat water; the first valve V11 is connected to the water cavity of the water heating device G2 through a first hot water supply pipeline.

[0048] Furthermore, the water heating device water supply system 100 is used to supply water to the water cavity of the water heating device G2; the water heating device water supply system 100 includes a second water tank 101, a second water supply pipe 102, a filter F1, a pump P1, and a one-way valve Y1; one end of the second water supply pipe 102 extends into the second water tank 101, and the other end of the second water supply pipe 102 is connected to the water cavity of the water heating device G2; the second water supply pipe 102 is sequentially installed with a filter F1, a pump P1, and a one-way valve Y1.

[0049] Furthermore, the water level probe LL1 is installed in the water heating device G2 to identify the water level in the water heating device G2.

[0050] Furthermore, the temperature control switch KC1 is fixed to the outer wall of the water heating device G2. The temperature control switch KC1 is used to detect the surface temperature of the water heating device G2. The temperature control switch KC1 is connected to the circuit of the water heating device G2.

[0051] The temperature control switch KC1 is used to control the on / off power of the water heating device G2 according to a preset temperature.

[0052] Furthermore, the temperature control switch KC2 is fixed to the outer surface of the steam generating device G3, and the temperature control switch KC2 is used to detect the surface temperature of the steam generating device G3. The temperature control switch KC2 is connected to the circuit of the steam generating device G3, and the temperature control switch KC2 is used to control the on / off power of the steam generating device G3 according to a preset temperature.

[0053] The temperature control switch KC1 and the temperature control switch KC2 are both used for overheat protection.

[0054] Furthermore, it also includes a safety pipe 130, a pressure detection unit PG1, and a safety valve R1; one end of the safety pipe 130 is connected to the water cavity of the water heating device G2, and the other end of the safety pipe 130 is connected to the waste liquid pipeline 60 or directly extends into the waste liquid treatment unit 70; and the pressure detection unit PG1 and the safety valve R1 are installed on the safety pipe 130; the pressure detection unit PG1 is used to detect the water pressure in the water heating device G2.

[0055] When the water pressure in the water heating device G2 exceeds a set value, the safety valve R1 is turned on to discharge the excess water in the water heating device G2 to the waste liquid treatment unit 70 through the safety pipe 130 .

[0056] Furthermore, the second valve V12 is a two-position three-way valve; the three ports of the second valve V12 are respectively connected to the first end of the steam exhaust pipe 140, the port of the steam supply branch pipe 81, and the end of the first air supply pipeline away from the steam generating device G3; the second valve V12 is used to switch the steam supply branch pipe 81 or the steam exhaust pipe 140 to be connected to the first air supply pipeline.

[0057] The second end of the steam exhaust pipe 140 is communicated with the waste liquid pipeline 60 or directly extends into the waste liquid treatment unit 70 .

[0058] After the steam cleaning pipeline is performed, the steam exhaust pipeline 140 is connected to the first air supply pipeline through the valve V12 to discharge the excess steam.

[0059] Furthermore, the temperature detection unit T1 is used to detect the water temperature in the water heating device G2, and is used to identify that the water temperature has reached a preset temperature before performing a subsequent step of using hot water to clean the pipeline.

[0060] Furthermore, the temperature detection unit T3 is used to detect the temperature of the steam in the first air supply pipeline, so that the steam can enter the cleaning circuit only after reaching the standard.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. The hot water steam of the beverage machine output pipeline is independently generated and cleaned in one direction, characterized by: The cleaning pipeline (80) comprises a plurality of branch pipelines that are interconnected, and at least comprises a steam supply branch pipe (81) and a hot water supply branch pipe (82); wherein a port of the hot water supply branch pipe (82) is connected to a hot water source via a first valve (V11); and a port of the steam supply branch pipe (81) is connected to a steam source via a second valve (V12); The shutoff valve (V01) is installed between the conveying unit (P3) and the heating unit (G1) of the hot product main line (30); the shutoff valve (V02) is installed between the conveying unit (P2) and the valve (V06) of the cold product main line (10); the shutoff valve (V01) and the shutoff valve (V02) are used to control the on / off of the pipeline; The branch pipelines of the cleaning pipeline (80) further include a hot product washing pipeline (85) and a cold product washing pipeline (86), and all the branch pipelines of the cleaning pipeline (80) are interconnected; a port of the hot product washing pipeline (85) is connected to the hot product main pipeline (30) between the shutoff valve (V01) and the heating unit (G1); a port of the cold product washing pipeline (86) is connected to the cold product main pipeline (10) between the shutoff valve (V02) and the valve (V06); The hot product washing pipeline (85) is installed with a shut-off valve (V09) and a one-way valve (Y3), wherein the one-way valve (Y3) only allows the cleaning medium in the hot product washing pipeline (85) to flow into the hot product outlet main pipeline (30); The cold product washing pipeline (86) is installed with a shut-off valve (V10) and a one-way valve (Y2), and the one-way valve (Y2) allows the cleaning medium in the cold product washing pipeline (86) to flow into the cold product outlet main pipeline (10).

2. The hot water steam independent generation and one-way cleaning system for the beverage machine delivery pipeline according to claim 1, characterized in that: The steam generating device (G3) is used to heat water to generate steam; the second valve (V12) is connected to the steam outlet of the steam generating device (G3) through a first air supply pipeline.

3. The hot water steam independent generation and one-way cleaning system for the beverage machine delivery pipeline according to claim 2 is characterized in that: The steam generating device water supply system (90) is used to supply water to the steam generating device (G3), and comprises a first water tank (91), a first water supply pipeline (92), a filter (F2), a pump (P4), and a shut-off valve (V13); one end of the first water supply pipeline (92) extends into the first water tank (91), and the first water supply pipeline (92) is connected to the water cavity of the steam generating device (G3); the filter (F2), the pump (P4), and the shut-off valve (V13) are installed on the first water supply pipeline (92) in sequence; wherein the filter (F2) is used to filter water.

4. The hot water steam independent generation and one-way cleaning system for the beverage machine delivery pipeline according to claim 1, characterized in that: The water heating device (G2) is used to heat water; the first valve (V11) is connected to the water cavity of the water heating device (G2) through a first hot water supply pipeline.

5. The hot water steam independent generation and one-way cleaning system for the beverage machine delivery pipeline according to claim 4, characterized in that: The water supply system (100) of a water heating device is used to supply water to a water cavity of the water heating device (G2); the water supply system (100) of the water heating device comprises a second water tank (101), a second water supply pipe (102), a filter (F1), a pump (P1), and a one-way valve (Y1); one end of the second water supply pipe (102) extends into the second water tank (101), and the other end of the second water supply pipe (102) is connected to the water cavity of the water heating device (G2); the filter (F1), the pump (P1), and the one-way valve (Y1) are installed on the second water supply pipe (102) in sequence.

6. The hot water steam independent generation and one-way cleaning system for the beverage machine dispensing pipeline according to claim 5, characterized in that: The water level probe (LL1) is installed in the water heating device (G2) and is used for identifying the water level in the water heating device (G2).

7. The hot water steam independent generation and one-way cleaning system for the beverage machine dispensing pipeline according to claim 5, characterized in that: The temperature control switch (KC1) is fixed to the outer wall of the water heating device (G2), the temperature control switch (KC1) is used to detect the surface temperature of the water heating device (G2), and the temperature control switch (KC1) is connected to the circuit of the water heating device (G2); The temperature control switch (KC1) is used to control the on / off power supply of the water heating device (G2) according to a preset temperature.

8. The hot water steam independent generation and one-way cleaning system for the beverage machine dispensing pipeline according to claim 2, characterized in that: The temperature control switch (KC2) is fixed on the outer surface of the steam generating device (G3), and the temperature control switch (KC2) is used to detect the surface temperature of the steam generating device (G3). The temperature control switch (KC2) is connected to the circuit of the steam generating device (G3), and the temperature control switch (KC2) is used to control the on / off of the steam generating device (G3) according to a preset temperature.

9. The hot water steam independent generation and one-way cleaning system for the beverage machine dispensing pipeline according to claim 7 or 8, characterized in that: It also includes a safety pipe (130), a pressure detection unit (PG1), and a safety valve (R1); one end of the safety pipe (130) is in communication with the water cavity of the water heating device (G2), and the other end of the safety pipe (130) is in communication with the waste liquid pipeline (60) or directly extends into the waste liquid treatment unit (70); and the pressure detection unit (PG1) and the safety valve (R1) are installed on the safety pipe (130); the pressure detection unit (PG1) is used to detect the water pressure in the water heating device (G2); When the water pressure in the water heating device (G2) exceeds a set value, the safety valve (R1) is turned on to discharge excess water in the water heating device (G2) through the safety pipe (130) to the waste liquid treatment unit (70).

10. The hot water steam independent generation and one-way cleaning system for the beverage machine dispensing pipeline according to claim 9, characterized in that: The second valve (V12) is a two-position three-way valve; the three ports of the second valve (V12) are respectively connected to the first end of the steam exhaust pipeline (140), the port of the steam supply branch pipe (81), and the end of the first air supply pipeline away from the steam generating device (G3); The second valve (V12) is used to switch the steam supply branch pipe (81) or the steam exhaust pipe (140) to communicate with the first air supply pipeline; The second end of the steam exhaust pipe (140) is communicated with the waste liquid pipeline (60) or directly extends into the waste liquid treatment unit (70).

Images