Liquid strip packaging machine cleaning and sterilizing structure and method

Abstract

The invention discloses a liquid strip packaging machine cleaning and sterilizing structure which comprises a first liquid separator, a first liquid collector and a plurality of filling forming sleeves, each filling forming sleeve comprises a filling pipe and a forming pipe arranged on the periphery of the filling pipe in a sleeving mode, and a plurality of liquid separation connectors of the first liquid separator are connected with the upper ends of the forming pipes in a one-to-one correspondence mode; the lower ends of the multiple forming pipes are in butt joint with or separated from the multiple liquid collecting connectors of the first liquid collector in a one-to-one correspondence mode through butt joint assemblies. The cleaning and sterilizing method comprises a cleaning stage, wherein cleaning water and compressed air are alternately input into the input pipeline, so that vortex is formed in the pipeline. The on-line cleaning device has the advantages that on-line cleaning of the filling forming sleeve can be achieved, the cleaning efficiency is improved, and secondary pollution is avoided.

Description

Technical Field

[0001] The invention relates to food and medicine packaging equipment and methods, and in particular to a liquid strip packaging machine cleaning and sterilization structure and method. Background Art

[0002] With the development of industry technology, pharmaceutical companies have higher and higher requirements for production automation. For multi-column liquid strip packaging machines, the parts in each column that come into contact with the materials (mainly including filling tubes, forming tubes and metering pumps, etc.) need to be disassembled, cleaned, sterilized and then reinstalled one by one after production, which has become an important difficulty that affects the overall production efficiency and makes it difficult to achieve automation. At the same time, it is difficult to ensure the consistency of the effects of offline cleaning and sterilization. The transportation during the process and the reinstallation after sterilization are likely to increase the risk of secondary contamination. For the filling and forming sleeves, since the forming tube sleeve is arranged on the outer periphery of the filling tube, it is difficult to perform online cleaning and sterilization operations on the inner wall of the forming tube, and no better solution has been proposed on the market. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a cleaning and sterilizing structure for a liquid strip packaging machine which can achieve online cleaning of a filling and forming sleeve, improve cleaning efficiency, and avoid secondary contamination.

[0004] The present invention further provides a cleaning and sterilization method for the cleaning and sterilization structure of the liquid strip bag machine.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A cleaning and sterilization structure for a liquid strip bag machine comprises a first liquid dispenser, a first liquid collector and a plurality of filling and forming sleeves, wherein the filling and forming sleeves comprise a filling tube and a forming tube sleeved on the outer circumference of the filling tube, the plurality of liquid dispensing interfaces of the first liquid dispenser are connected one-to-one with the upper ends of the plurality of forming tubes, and the lower ends of the plurality of forming tubes are docked or separated one-to-one with the plurality of liquid collecting interfaces of the first liquid collector via a docking assembly.

[0007] As a further improvement of the above technical solution: the docking assembly includes a plug-in tube arranged on the upper part of the liquid collection interface and a locking nut arranged on the outer periphery of the liquid collection interface, the lower end of the formed tube is inserted into the plug-in tube, a first flange is provided on the outer periphery of the plug-in tube, a second flange for tightening the first flange is provided on the inner wall of the locking nut, a first seal is provided between the inner wall of the plug-in tube and the outer wall of the formed tube, and a second seal is provided between the lower end of the plug-in tube and the upper end of the liquid collection interface.

[0008] As a further improvement of the above technical solution: a gap is provided between the outer wall of the first flange and the inner wall of the locking nut, and a gap is provided between the inner wall of the second flange and the outer wall of the plug-in tube.

[0009] As a further improvement of the above technical solution: detachable supports are provided at both ends of the first liquid collector; and / or, an outlet is provided at one end of the first liquid collector which is arranged obliquely and has a lower height.

[0010] As a further improvement of the above technical solution: it also includes an input pipeline, a buffer tank, a third liquid distributor, a second liquid distributor, a discharge pipeline, a second liquid collector and multiple filling pumps, the input pipeline is respectively connected to the inlets of the buffer tank, the first liquid distributor, the second liquid distributor and the third liquid distributor, the outlet of the buffer tank is connected to the inlet of the third liquid distributor, the filling pump is provided with a filling inlet, a filling outlet, a cleaning inlet and a cleaning outlet, the multiple liquid distribution interfaces of the third liquid distributor are connected one-to-one with the multiple filling inlets, the multiple filling outlets are connected one-to-one with the upper ends of the multiple filling tubes, the multiple liquid distribution interfaces of the second liquid distributor are connected one-to-one with the multiple cleaning inlets, the multiple cleaning outlets are connected one-to-one with the multiple liquid collection interfaces of the second liquid collector, the outlets of the first liquid collector and the second liquid collector are connected to the discharge pipeline, and the discharge pipeline is provided with a conductivity sensor and a temperature sensor and is connected in parallel with a steam trap.

[0011] As a further improvement of the above technical solution: the input pipeline is connected to the inlet of the third liquid distributor, and the outlet of the third liquid distributor is connected to the discharge pipeline.

[0012] A cleaning and sterilization method for the cleaning and sterilization structure of the liquid strip bag machine includes a cleaning stage: alternately inputting cleaning water and compressed air into the input pipe to form a vortex in the pipe.

[0013] As a further improvement of the above technical solution: it also includes a pre-cleaning stage: the cleaning water of the liquid distribution system of the buffer tank passes through the buffer tank, the third liquid distributor, the filling pump, the filling pipe and the first liquid collector in sequence, and then is discharged from the discharge pipe.

[0014] As a further improvement of the above technical solution: the specific process of the cleaning stage includes:

[0015] The first stage: the input pipeline, the buffer tank, the third liquid distributor and the discharge pipeline are connected in sequence, and cleaning water and compressed air are alternately input into the input pipeline to clean the buffer tank and the third liquid distributor;

[0016] The second stage: the input pipeline, the second liquid distributor, the filling pump, the filling tube, the first liquid collector and the discharge pipeline are connected in sequence, and the second liquid collector is connected to the discharge pipeline, and cleaning water and compressed air are alternately input into the input pipeline to clean the filling pump and the filling tube;

[0017] The third stage: the input pipeline, the first liquid distributor, the forming tube, the first liquid collector and the discharge pipeline are connected in sequence, and cleaning water and compressed air are alternately input into the input pipeline to clean the forming tube;

[0018] The conductivity sensor detects that the conductivity of the drainage at each stage is qualified and the cleaning is completed.

[0019] As a further improvement of the above technical solution: after the cleaning stage, a sterilization stage is performed: steam is input through the input pipeline to sterilize the buffer tank, the third liquid distributor, the filling pump, the filling tube and the forming tube, the steam trap discharges condensed water, and the temperature sensor detects that the temperature in the discharge pipeline is not lower than the set temperature and lasts for the set time before the sterilization is terminated;

[0020] The sterilization phase is followed by a drying phase: compressed air is introduced through the input pipeline to dry the buffer tank, the third dispenser, the filling pump, the filling tube and the forming tube.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] The cleaning and sterilization structure of the liquid strip package machine disclosed in the present invention, when cleaning and sterilization are needed, the liquid dispensing interfaces of the first liquid dispenser are connected one-to-one with the upper ends of the forming tubes, and the lower ends of the forming tubes are docked one-to-one with the liquid collecting interfaces of the first liquid collector through a docking assembly. The inner wall of the filling tube can be cleaned and sterilized through the filling pipeline, and the inner wall of the forming tube or the interlayer between the forming tube and the filling tube can be cleaned and sterilized by the medium conveyed by the first liquid dispenser. The cleaning and sterilization medium discharged from the forming tube can enter the first liquid collector through the liquid collecting interfaces for collection, thereby realizing online cleaning of the inner wall of the forming tube, without the need to disassemble and decompose the filling and forming sleeve, thereby improving cleaning efficiency and avoiding secondary contamination.

[0023] The cleaning and sterilization method of the cleaning and sterilization structure of the liquid strip bag machine disclosed in the present invention alternately inputs cleaning water and compressed air into the input pipeline to form a vortex in the pipeline, which is beneficial to enhance the cleaning effect of the cleaning water, reduce the amount of cleaning water used, and reduce maintenance costs.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the cleaning and sterilizing structure of the liquid strip bag machine of the present invention.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the filling molding sleeve and the first liquid collector in the present invention.

[0027] Figure 3 It is a schematic cross-sectional structural diagram of the filling molding sleeve and the first liquid collector in the present invention.

[0028] Figure 4 yes Figure 3 A partial enlarged view of .

[0029] Figure 5 It is an enlarged structural schematic diagram of the filling pump in the present invention.

[0030] The symbols in the figure represent:

[0031] 1. Input pipeline; 2. Buffer tank; 3. Third liquid distributor; 4. Second liquid distributor; 5. First liquid distributor; 6. Discharge pipeline; 61. Conductivity sensor; 62. Temperature sensor; 63. Steam trap; 7. Filling pump; 71. Filling inlet; 72. Filling outlet; 73. Cleaning inlet; 74. Cleaning outlet; 8. Filling forming sleeve; 81. Filling tube; 82. Forming tube; 91. First liquid collector; 911. Plug-in tube; 912. Locking nut; 913. First flange; 914. Second flange; 915. First seal; 916. Second seal; 917. Support; 92. Second liquid collector. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be a connection between two elements or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Embodiment 1

[0037] Figures 1 to 5 An embodiment of the cleaning and sterilization structure of the liquid strip package machine of the present invention is shown. The cleaning and sterilization structure of the liquid strip package machine of this embodiment includes a first liquid distributor 5, a first liquid collector 91 and a plurality of filling and molding sleeves 8. The filling and molding sleeves 8 include a filling tube 81 and a molding tube 82 sleeved on the outer periphery of the filling tube 81. The plurality of liquid distribution interfaces of the first liquid distributor 5 are connected to the upper ends of the plurality of molding tubes 82 in a one-to-one correspondence, and the lower ends of the plurality of molding tubes 82 are docked or separated from the plurality of liquid collection interfaces of the first liquid collector 91 in a one-to-one correspondence through a docking assembly.

[0038] The cleaning and sterilization structure of the liquid strip package machine of this embodiment, when cleaning and sterilization is needed, the various liquid dispensing interfaces of the first liquid dispenser 5 are connected one-to-one with the upper ends of the various forming tubes 82, and the lower ends of the various forming tubes 82 are docked one-to-one with the various liquid collecting interfaces of the first liquid collector 5 through docking components. The inner wall of the filling tube 81 can be cleaned and sterilized through the filling pipeline, and the inner wall of the forming tube 82 or the interlayer between the forming tube 82 and the filling tube 81 can be cleaned and sterilized by the medium conveyed by the first liquid dispenser 5, and the cleaning and sterilization medium discharged from the forming tube 82 can enter the first liquid collector 91 through the various liquid collecting interfaces for collection, thereby realizing online cleaning of the inner wall of the forming tube 82, without the need to disassemble the filling and forming sleeve 8, thereby improving the cleaning efficiency and avoiding secondary contamination.

[0039] See Figure 4Furthermore, in the present embodiment, the docking assembly includes a plug-in tube 911 disposed on the upper part of the liquid collecting interface and a locking nut 912 disposed on the outer periphery of the liquid collecting interface; the lower end of the forming tube 82 is inserted into the plug-in tube 911 (of course, since the filling tube 81 is located on the inner side of the forming tube 82, the lower end of the filling tube 82 is also located on the inner side of the plug-in tube 911); a first flange 913 is disposed on the outer periphery of the plug-in tube 911; a second flange 914 for pressing the first flange 913 is disposed on the inner wall of the locking nut 912; a first sealing member 915 is disposed between the inner wall of the plug-in tube 911 and the outer wall of the forming tube 82; a second sealing member 916 is disposed between the lower end of the plug-in tube 911 and the upper end of the liquid collecting interface (the sealing member may be, for example, a sealing strip, an O-ring, etc.). After the lower end of the forming tube 82 is inserted into the plug tube 911, the locking nut 912 is tightened. During the downward movement of the locking nut 912, the first flange 913 is driven downward by the second flange 914, so that the lower end of the plug tube 911 is pressed against the upper end of the liquid collecting interface. The first seal 915 is used to seal the gap between the inner wall of the plug tube 911 and the outer wall of the forming tube 82, and the second seal 916 is used to seal the gap between the lower end of the plug tube 911 and the upper end of the liquid collecting interface to avoid leakage during the cleaning and sterilization process. The structure is simple and reliable, and the docking operation is convenient. Preferably, multiple first seals 915 can be arranged at intervals along the vertical direction to enhance the sealing effect.

[0040] Furthermore, in this embodiment, there is a gap between the outer wall of the first flange 913 and the inner wall of the locking nut 912, and there is a gap between the inner wall of the second flange 914 and the outer wall of the plug tube 911. Due to the reserved gap, the locking nut 912 only exerts a downward force on the plug tube 911, but no force in the left and right directions. Accordingly, the plug tube 911 will not transmit the left and right reverse force to the forming tube 82, thereby preventing the forming tube 82 from bending and deformation, and the structure is reasonable.

[0041] Furthermore, in this embodiment, detachable supports 917 are provided at both ends of the first liquid collector 91. For example, a vertical waist-shaped hole is provided on the support 917 and the support 917 can be adjustably fixed to the frame of the liquid strip packaging machine through a threaded fastening handle provided in the waist-shaped hole, so as to facilitate the docking or separation of the forming tube 82 and the first liquid collector 91; an outlet is provided at one end of the first liquid collector 91 which is arranged obliquely and has a lower height. Figure 3 The first liquid collector 91 is arranged obliquely from side to side, with the right end being lower in height and the outlet being arranged at the right end, which is conducive to discharging the cleaning and sterilizing medium inside. Similar to the first liquid collector 91, the second liquid collector 92 can also be arranged obliquely.

[0042] See Figure 1Further, in this embodiment, the cleaning and sterilization structure of the liquid strip pack machine also includes an input pipeline 1, a buffer tank 2, a third liquid dispenser 3, a second liquid dispenser 4, a discharge pipeline 6, a second liquid collector 92 and a plurality of filling pumps 7, the input pipeline 1 is respectively connected to the inlets of the buffer tank 2, the first liquid dispenser 5, the second liquid dispenser 4 and the third liquid dispenser 3, the outlet of the buffer tank 2 is connected to the inlet of the third liquid dispenser 3, the filling pump 7 is provided with a filling inlet 71, a filling outlet 72, a cleaning inlet 73 and a cleaning outlet 74, the third liquid dispenser 3 are connected one-to-one with the multiple filling inlets 71, the multiple filling outlets 72 are connected one-to-one with the upper ends of the multiple filling tubes 81, the multiple liquid separation interfaces of the second liquid distributor 4 are connected one-to-one with the multiple cleaning inlets 73, the multiple cleaning outlets 74 are connected one-to-one with the multiple liquid collecting interfaces of the second liquid collector 92, the outlets of the first liquid collector 91 and the second liquid collector 92 are connected to the discharge pipe 6, and the discharge pipe 6 is provided with a conductivity sensor 61 and a temperature sensor 62 and a steam trap 63 in parallel. The input pipeline 1 can provide cleaning and sterilization medium for the first liquid distributor 5, the second liquid distributor 4, the third liquid distributor 3 and the buffer tank 2. The cleaning and sterilization medium discharged from each filling tube 81 can enter the first liquid collector 91 for collection, and the cleaning and sterilization medium discharged from each filling pump 7 can enter the second liquid collector 92 for collection, and finally be discharged through the discharge pipeline 6. The conductivity sensor 61 is used to detect the conductivity of the discharged cleaning medium. The cleaning process is terminated after the conductivity is qualified. The temperature sensor 62 is used to detect the temperature of the discharged sterilization medium. If it is not lower than the set temperature within the set time range, the sterilization process is terminated. The steam trap 63 connected in parallel with the discharge pipeline 6 is used to discharge condensed water generated during the high-temperature and high-pressure steam sterilization process. The overall structure is reasonable, and the components in contact with the liquid during the filling process of the liquid strip packaging machine can be fully cleaned and sterilized online without the need for disassembly, decomposition, cleaning, sterilization, and reinstallation. This can further improve the cleaning efficiency and avoid secondary pollution.

[0043] Furthermore, in this embodiment, the input pipe 1 is connected to the inlet of the third liquid distributor 3, and the outlet of the third liquid distributor 3 is connected to the discharge pipe 6. Specifically, Figure 1 The right end of the middle input pipe 1 is connected to the inlet at the left end of the third liquid distributor 3 through the pipe on the right side of the buffer tank 2, and the outlet at the right end of the third liquid distributor 3 is connected to the right end of the discharge pipe 6, so that the cleaning and sterilization medium in the input pipe 1 can bypass the buffer tank 2 and directly enter the third liquid distributor 3, and the cleaning and sterilization medium discharged from the third liquid distributor 3 can also bypass the filling pump 7 and the second liquid collector 92 and be discharged to the discharge pipe 6.

[0044] Embodiment 2

[0045] The cleaning and sterilization method of the cleaning and sterilization structure of the liquid strip bag machine comprises a cleaning stage: cleaning water and compressed air are alternately input into the input pipe 1 so as to form a vortex in the pipe.

[0046] In the cleaning and sterilization method of this embodiment, cleaning water and compressed air are alternately input into the input pipe 1 so as to form a vortex in the pipe, which is beneficial to enhance the cleaning effect of the cleaning water, reduce the amount of cleaning water used, and reduce maintenance costs.

[0047] Furthermore, in this embodiment, the cleaning and sterilization method also includes a pre-cleaning stage: the cleaning water of the liquid distribution system of the buffer tank 2 passes through the buffer tank 2, the third liquid distributor 3, the filling pump 7, the filling tube 81 and the first liquid collector 91 in sequence, and then is discharged from the discharge pipe 6. Before the cleaning stage, the cleaning water of the front-end liquid distribution system is used to roughly clean the pipelines of the buffer tank 2-third liquid distributor 3-filling pump 7-molding-the inner wall of the filling tube 81-the first liquid collector 91 and other parts in contact with the liquid in the production process, so that the drainage function of the cleaning water of the liquid distribution system is completed, and the water saving effect is achieved for the subsequent formal cleaning stage.

[0048] Furthermore, in this embodiment, the specific process of the cleaning stage includes:

[0049] The first stage: the input pipeline 1, the buffer tank 2, the third liquid distributor 3 and the discharge pipeline 6 are connected in sequence, and cleaning water and compressed air are alternately input into the input pipeline 1 to clean the buffer tank 2 and the third liquid distributor 3;

[0050] The second stage: the input pipeline 1, the second liquid distributor 4, the filling pump 7, the filling tube 81, the first liquid collector 91 and the discharge pipeline 6 are connected in sequence, and the second liquid collector 92 is connected to the discharge pipeline 6. Cleaning water and compressed air are alternately input into the input pipeline 1 to clean the filling pump 7 and the filling tube 81. Part of the cleaning water in the filling pump 7 is used to clean the filling tube 81, and of course the first liquid collector 91 will also be cleaned at the same time, and the other part is used to clean itself, and then discharged to the first liquid collector 91 and the second liquid collector 92 respectively;

[0051] The third stage: the input pipeline 1, the first liquid distributor 5, the forming tube 82, the first liquid collector 91 and the discharge pipeline 6 are connected in sequence, and cleaning water and compressed air are alternately input into the input pipeline 1 to clean the forming tube 82;

[0052] The conductivity sensor 61 detects that the conductivity of the wastewater in each stage is qualified and then the cleaning is finished.

[0053] Online cleaning is carried out in stages to avoid mutual influence and achieve comprehensive cleaning. In each stage, cleaning water and compressed air are alternately input into the cleaning input pipeline 1 to form a vortex in the pipeline, which is beneficial to enhance the cleaning effect of the cleaning water, reduce the amount of cleaning water used, and reduce maintenance costs.

[0054] Furthermore, in the present embodiment, a sterilization stage is performed after the cleaning stage: steam is input through the input pipe 1 to sterilize the buffer tank 2, the third liquid distributor 3, the filling pump 7, the filling tube 81 and the forming tube 82, the steam trap 63 discharges condensed water, and the temperature sensor 62 detects that the temperature in the discharge pipe 6 is not lower than the set temperature and lasts for the set time before the sterilization is terminated (in the present embodiment, the temperature is maintained above 121°C and lasts for 30 minutes before the sterilization process is terminated); after the staged cleaning, each part is in a clean state and will not affect each other, so the sterilization stage is no longer performed in stages but is performed simultaneously, which is beneficial to improving the sterilization efficiency and shortening the time required for the sterilization stage.

[0055] After the sterilization stage, the drying stage is performed: compressed air is input through the input pipe 1 to dry the buffer tank 2, the third liquid dispenser 3, the filling pump 7, the filling tube 81 and the forming tube 82. After the cleaning stage and the sterilization stage, each part is in a clean and sterile state and will not affect each other. Therefore, the drying stage is no longer performed in stages but is performed simultaneously, which is conducive to improving the drying efficiency and shortening the time required for the drying stage.

[0056] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cleaning and sterilizing structure for a liquid stick package machine, characterized in that: The invention comprises a first liquid distributor (5), a first liquid collector (91) and a plurality of filling forming sleeves (8), wherein the filling forming sleeves (8) comprise a filling tube (81) and a forming tube (82) sleeved on the outer circumference of the filling tube (81), a plurality of liquid distribution interfaces of the first liquid distributor (5) are connected to the upper ends of the plurality of forming tubes (82) in a one-to-one correspondence, and the lower ends of the plurality of forming tubes (82) are connected to or separated from the plurality of liquid collection interfaces of the first liquid collector (91) in a one-to-one correspondence via a docking assembly.

2. The cleaning and sterilizing structure of the liquid stick package machine according to claim 1, characterized in that: The docking assembly comprises a plug-in tube (911) arranged at the upper part of the liquid collecting interface and a locking nut (912) arranged at the outer periphery of the liquid collecting interface; the lower end of the forming tube (82) is inserted into the plug-in tube (911); a first flange (913) is arranged at the outer periphery of the plug-in tube (911); a second flange (914) for pressing the first flange (913) is arranged on the inner wall of the locking nut (912); a first sealing member (915) is arranged between the inner wall of the plug-in tube (911) and the outer wall of the forming tube (82); and a second sealing member (916) is arranged between the lower end of the plug-in tube (911) and the upper end of the liquid collecting interface.

3. The cleaning and sterilizing structure of the liquid stick package machine according to claim 2, characterized in that: There is a gap between the outer wall of the first flange (913) and the inner wall of the locking nut (912), and there is a gap between the inner wall of the second flange (914) and the outer wall of the plug tube (911).

4. The cleaning and sterilizing structure of the liquid stick package machine according to claim 1, characterized in that: Both ends of the first liquid collector (91) are provided with detachable supports (917); and / or, the first liquid collector (91) is arranged obliquely and has an outlet at one end with a lower height.

5. The cleaning and sterilizing structure of a liquid stick package machine according to any one of claims 1 to 4, characterized in that: The invention also comprises an input pipeline (1), a buffer tank (2), a third liquid distributor (3), a second liquid distributor (4), a discharge pipeline (6), a second liquid collector (92) and a plurality of filling pumps (7); the input pipeline (1) is respectively connected to the inlets of the buffer tank (2), the first liquid distributor (5), the second liquid distributor (4) and the third liquid distributor (3); the outlet of the buffer tank (2) is connected to the inlet of the third liquid distributor (3); the filling pump (7) is provided with a filling inlet (71), a filling outlet (72), a cleaning inlet (73) and a cleaning outlet (74); the plurality of liquid distribution interfaces of the third liquid distributor (3) are connected to the plurality of liquid distribution interfaces; The plurality of filling inlets (71) are connected one-to-one with each other, the plurality of filling outlets (72) are connected one-to-one with the upper ends of the plurality of filling tubes (81), the plurality of liquid separation interfaces of the second liquid distributor (4) are connected one-to-one with the plurality of cleaning inlets (73), the plurality of cleaning outlets (74) are connected one-to-one with the plurality of liquid collection interfaces of the second liquid collector (92), the outlets of the first liquid collector (91) and the second liquid collector (92) are connected with the discharge pipe (6), and the discharge pipe (6) is provided with a conductivity sensor (61) and a temperature sensor (62) and is connected in parallel with a steam trap (63).

6. The cleaning and sterilizing structure of the liquid stick package machine according to claim 5, characterized in that: The input pipeline (1) is connected to the inlet of the third liquid distributor (3), and the outlet of the third liquid distributor (3) is connected to the discharge pipeline (6).

7. A method for cleaning and sterilizing the cleaning and sterilizing structure of a liquid stick package machine according to any one of claims 1 to 6, characterized in that: The method comprises a cleaning stage: cleaning water and compressed air are alternately input into an input pipe (1) so as to form a vortex in the pipe.

8. The cleaning and sterilizing method for the cleaning and sterilizing structure of the liquid stick package machine according to claim 7, characterized in that: It also includes a pre-cleaning stage: the cleaning water of the liquid distribution system of the buffer tank (2) passes through the buffer tank (2), the third liquid distributor (3), the filling pump (7), the filling pipe (81) and the first liquid collector (91) in sequence, and is then discharged from the discharge pipe (6).

9. The cleaning and sterilizing method for the cleaning and sterilizing structure of a liquid stick package machine according to claim 7, characterized in that: The specific process of the cleaning stage includes: The first stage: the input pipeline (1), the buffer tank (2), the third liquid distributor (3) and the discharge pipeline (6) are connected in sequence, and cleaning water and compressed air are alternately input into the input pipeline (1) to clean the buffer tank (2) and the third liquid distributor (3); The second stage: the input pipeline (1), the second liquid distributor (4), the filling pump (7), the filling tube (81), the first liquid collector (91) and the discharge pipeline (6) are connected in sequence, and the second liquid collector (92) is connected to the discharge pipeline (6), and cleaning water and compressed air are alternately input into the input pipeline (1) to clean the filling pump (7) and the filling tube (81); The third stage: the input pipe (1), the first liquid distributor (5), the forming pipe (82), the first liquid collector (91) and the discharge pipe (6) are connected in sequence, and cleaning water and compressed air are alternately input into the input pipe (1) to clean the forming pipe (82); The conductivity sensor (61) detects that the conductivity of the drainage at each stage is qualified and the cleaning is completed.

10. The cleaning and sterilizing method for the cleaning and sterilizing structure of a liquid stick package machine according to claim 7, characterized in that: After the cleaning stage, a sterilization stage is performed: steam is input through the input pipe (1) to sterilize the buffer tank (2), the third liquid distributor (3), the filling pump (7), the filling pipe (81) and the forming pipe (82); the steam trap (63) discharges condensed water; and the temperature sensor (62) detects that the temperature in the discharge pipe (6) is not lower than the set temperature and lasts for a set time before the sterilization is terminated; After the sterilization stage, a drying stage is performed: compressed air is input through the input pipeline (1) to dry the buffer tank (2), the third liquid distributor (3), the filling pump (7), the filling tube (81) and the forming tube (82).

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