Sterilizer nozzle and filling equipment

Abstract

The present disclosure relates to the technical field of filling, and discloses a sterilant nozzle and a filling device. The sterilant nozzle is used to spray sterilant into a packaging box, and includes: a body, the body having a longitudinal axis, and the body including an inlet and an outlet along the longitudinal axis; the body also includes a channel assembly, the channel assembly connects the inlet and the outlet, and is used to transport the sterilant from the inlet to the outlet; along the plane perpendicular to the longitudinal axis, the cross-sectional area of the inlet and the cross-sectional area of the outlet are different, the sterilant flows through the channel assembly and is ejected from the outlet, and the channel assembly causes the sterilant ejected from the outlet to diverge. The sterilant ejected from the outlet diverges, and divergence here means that the sterilant ejected from one point of the outlet spreads out to the surroundings, and the spray width increases, so that the sterilant ejected from the outlet is more evenly and widely distributed inside the package, and is completely filled in the four corners of the package bottom plate, which has a complete disinfection effect on the package and a sterile environment inside the package.

Description

Technical Field

[0001] The present disclosure relates to the technical field of filling, and in particular to a sterilant nozzle and filling equipment. Background Art

[0002] Filling devices are used to fill liquid products into packages. For example, the liquid product can be a food product such as milk, juice, paste, or yogurt. During the filling process, since the food is packaged, filling is typically performed under sterile conditions. Both the food and the packaging to be filled are sterilized. First, the package is typically cleaned with sterile hot air. A sterilizing agent, typically hydrogen peroxide or at least a combination thereof, is then introduced into the heated package. The distribution of hydrogen peroxide within the package directly affects the sterilization efficiency. Current sterilizing nozzles spray sterilizing agents, due to impact force or spray direction, resulting in uneven distribution of the sterilizing agent within the package, reducing sterilization efficiency.

[0003] Public content

[0004] The present disclosure discloses a sterilant spray head and a filling device, which are used to improve the distribution uniformity of the sprayed sterilant in a package.

[0005] To achieve the above objectives, the present disclosure provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present disclosure provides a sterilant spray head for spraying sterilant into a packaging box, the sterilant spray head comprising: a body having a longitudinal axis, the body comprising an inlet and an outlet along the longitudinal axis;

[0007] The body further includes a channel assembly connecting the inlet and the outlet for transporting the sterilant from the inlet to the outlet;

[0008] Wherein, along a plane perpendicular to the longitudinal axis, the cross-sectional area of the inlet is different from the cross-sectional area of the outlet, the sterilant flows through the channel assembly and is ejected from the outlet, and the channel assembly causes the sterilant ejected from the outlet to diverge.

[0009] The sterilizer nozzle provided by the present invention is used to spray the sterilizer, that is, the sterilizer ejected from the outlet is diverged. Divergence here means that the sterilizer ejected from one point of the outlet is dispersed to all sides, and the width of the sterilizer spray is increased, so that the sterilizer ejected from the outlet is more evenly and widely distributed inside the package, and completely fills the four corners of the package bottom plate, so as to achieve the effect of complete disinfection of the package, thereby ensuring a sterile environment inside the package.

[0010] Optionally, the distance from the inlet to the outlet along the longitudinal axis ranges from 105 mm to 115 mm.

[0011] Optionally, the channel assembly comprises a first portion and a second portion connected in sequence along the longitudinal axis direction;

[0012] One end of the first part away from the second part is connected to the inlet, and one end of the second part away from the first part is connected to the outlet.

[0013] Optionally, along the longitudinal axis direction, the length of the first portion is greater than the length of the second portion.

[0014] Optionally, there is only one outlet, and along the longitudinal axis, the cross-sectional areas of the first part are equal at all locations; and the cross-sectional area of the second part gradually increases from near the first part to the outlet.

[0015] Optionally, along the longitudinal axis, the length of the first portion ranges from 70 mm to 90 mm; the length of the second portion ranges from 20 mm to 40 mm.

[0016] Optionally, along a plane perpendicular to the longitudinal axis, the diameter of the cross-sectional area at the inlet is in the range of 10 mm to 15 mm;

[0017] The diameter of the cross-sectional area at the outlet is in the range of 16 mm to 20 mm.

[0018] Optionally, there are two outlets, and along the longitudinal axis, the length of the first part ranges from 80 mm to 90 mm; the length of the second part ranges from 20 mm to 30 mm.

[0019] Optionally, the second part includes two branch pipelines corresponding to the two outlets one by one, and the angle formed by the axis lines of the two branch pipelines is in the range of 10°-15°.

[0020] Optionally, along a plane perpendicular to the longitudinal axis, the diameter of the cross-sectional area at the inlet is in the range of 10 mm to 20 mm;

[0021] The cross-sectional area of each of the two outlets is the same, and the diameter of the cross-sectional area at the outlet is in the range of 5 mm to 10 mm.

[0022] Optionally, along the longitudinal axis direction, the length of the first portion is smaller than the length of the second portion.

[0023] Optionally, there are three outlets, and along the longitudinal axis, the length of the first part ranges from 25 mm to 35 mm; the length of the second part ranges from 70 mm to 90 mm.

[0024] Optionally, the second part includes three branch pipelines corresponding one-to-one to the three outlets, and the three branch pipelines rotate around the axis direction of the first part.

[0025] Optionally, along a plane perpendicular to the longitudinal axis, the diameter of the cross-sectional area at the inlet is in the range of 10 mm to 20 mm;

[0026] The cross-sectional area of each of the three outlets is the same, and the diameter of the cross-sectional area at the outlet is in the range of 3 mm to 7 mm.

[0027] Optionally, the axis of the outlet forming area is at a certain distance from the axis of the packaging box.

[0028] In a second aspect, the present disclosure provides a filling device, comprising a plurality of sterilant spray heads according to any one of the first aspects, wherein the plurality of sterilant spray heads are arranged along a preset direction.

[0029] Optionally, the angle between the arrangement direction of the two branch pipelines in the sterilant nozzle and the preset direction is in the range of 35°-55°. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A system schematic diagram of a filling device provided in an embodiment of the present disclosure;

[0031] Figure 2 A front view of a sterilant spray nozzle provided by an embodiment of the present disclosure;

[0032] Figure 3 for Figure 2 Bottom view of

[0033] Figure 4 for Figure 2 The cross-sectional view of the AA surface;

[0034] Figure 5 A front view of another sterilant spray nozzle provided in an embodiment of the present disclosure;

[0035] Figure 6 for Figure 5 Corresponding bottom view;

[0036] Figure 7 for Figure 5 The corresponding cross-sectional view at BB;

[0037] Figure 8A front view of another sterilant spray nozzle provided in an embodiment of the present disclosure;

[0038] Figure 9 for Figure 8 The corresponding cross-sectional view at CC;

[0039] Figure 10 for Figure 8 The corresponding cross-sectional view at DD;

[0040] Figure 11 A schematic diagram of the position of the sterilant spray nozzle relative to the package provided in an embodiment of the present disclosure;

[0041] Figure 12 A schematic diagram of the corresponding relationship between the sterilant nozzles in the sterilization area provided by the embodiment of the present disclosure;

[0042] Figure 13 Schematic diagram of the relative position of the outlet of the Y-shaped sterilant nozzle and the packaging provided in the embodiment of the present disclosure Figure 1 ;

[0043] Figure 14 Schematic diagram of the relative position of the outlet of the Y-shaped sterilant nozzle and the packaging provided in the embodiment of the present disclosure Figure 2 . DETAILED DESCRIPTION

[0044] The following describes in detail, with reference to the accompanying drawings, an apparatus and method for positioning a filling system component according to an embodiment of the present disclosure. To further clarify the objectives, technical solutions, and advantages of the present disclosure, the following provides a clear and complete description of the technical solutions in the embodiments of the present disclosure, in conjunction with the accompanying drawings. It should be understood that the described embodiments represent only a portion of the embodiments of the present disclosure, not all of them.

[0045] Therefore, the following detailed description of the embodiments of the present disclosure provided in conjunction with the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0046] Unless the context otherwise defines, the singular includes the plural. Throughout the specification, the terms "including", "having", etc. are used herein to specify the presence of the features, numbers, steps, operations, elements, parts or their combination, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, parts or their combination.

[0047] In addition, even if ordinal terms such as “first”, “second”, etc. are used to describe various components, these components are not limited by these terms, and these terms are only used to distinguish one element from other elements.

[0048] Filling equipment 101 is used to produce aseptically filled packaged products. A typical example is the packaging of pourable foods (such as milk, beverages, soup, ketchup, etc.), which is made by sealing sheet packaging material. The packaging material has a multi-layer structure, which includes a carton and / or a paper base.

[0049] Figure 1 A system schematic diagram of the filling equipment disclosed in the present invention is shown.

[0050] The filling plant 101 has a series of parallel processing lines, for example four or six processing lines, but Figure 2 Only one of the processing lines is shown in FIG. Each processing line is assigned a stack 4 of packaging blanks 5 in the form of packaging cutouts, the longitudinal edges of which are sealed to each other and thus form a packaging sleeve that is pre-folded together. The packaging blanks 5 are unfolded by a conveying device 6.

[0051] The forming device 3 for forming the package 2 has a forming device, and the forming shaft 7 includes a forming rod 8. The forming shaft 7 rotates counterclockwise (rotates in the plane where the YZ direction is located) periodically and step by step. After rotating to a specified position, it stays for a period of time and then rotates to the next specified position. For example, the forming shaft 7 rotates to drive the forming rod 8 to the forming shaft position I, the corresponding forming rod 8 is located in the receiving station 9, and the packaging blank 5 is pushed onto the forming rod 8. Then, the forming shaft 7 is further rotated to the first forming station 10 in the next forming shaft position II, wherein the end area of the packaging blank 5 protruding from the forming rod 8 is heated by hot air by the heating unit 11. In the next forming shaft position III, the heated end area of the packaging blank 5 is pre-folded in the second forming station 12 by a press 13, and is tightly sealed as a bottom in the subsequent forming shaft position IV or in the subsequent forming station 14 in the folding position by a sealing device not shown in detail. In this way, a package 2 closed on one side is obtained, which is removed from the forming rod 8 in a transfer station 15 in the subsequent forming axis position V and transferred to the grid 16 of the endless conveyor, which is guided in a circular manner in the illustrated and therefore preferred device 1. In the next forming axis position VI, there is no forming station assigned to the forming rod 9.

[0052] The packages 2 are transported with their open ends upward in the respective compartments 16 through a sterile room 18 comprising a sterilization zone 19 and a filling and sealing zone 20, through which zones the packages 2 are transported from left to right in the XZ direction.

[0053] Sterile air is supplied to the sterile room 18 via corresponding sterile air connections 21. At a first processing station 22, the packages 2 are preheated by blowing in hot sterile air using a preheating device. The packages 2 are then sterilized in another processing station 23 with a sterilizing agent, preferably hydrogen peroxide. Subsequently, at a third processing station 24, the packages 2 are dried by applying sterile air using a drying device. After the transition from the sterilization zone 19 to the filling and sealing zone 20, they enter a filling station 26 below a filling outlet 25. There, the packages 2 are sequentially filled with food. The filled packages 2 are then closed using a closing device 27 at a final processing station 28 by folding the upper area of the packages 2 and sealing them to form packages. The closed packages 2 are then removed from the compartments 16 of the transport device 17. The now empty compartments 16, along with the transport device 17, are moved toward the forming axis 7 to accommodate additional packages 2.

[0054] When the package 2 is sterilized in another processing station 23 with a sterilizing agent, preferably hydrogen peroxide, the sterilizing agent nozzle selected for sterilization needs to ensure uniformity of the sterilizing agent sprayed on the package 2 to improve the sterilization efficiency of the package.

[0055] The following is a detailed description of the specific structure of the sterilant spray nozzle for spraying sterilant provided in the embodiment of the present disclosure:

[0056] like Figures 2 to 13 As shown, an embodiment of the present disclosure provides a sterilant spray head for spraying sterilant into a packaging box, the sterilant spray head comprising: a body 100, the body 100 having a longitudinal axis YY, and along the longitudinal axis YY direction, the body 100 comprises an inlet 110 and an outlet 120;

[0057] The body 100 further includes a channel assembly 130 , which connects the inlet 110 and the outlet 120 and is used to transport the sterilant from the inlet 110 to the outlet 120 ;

[0058] In the plane perpendicular to the longitudinal axis YY, the cross-sectional area of the inlet 110 is different from the cross-sectional area of the outlet 120. The sterilant flows through the channel assembly 13 and is ejected from the outlet 120. The channel assembly 130 causes the sterilant ejected from the outlet 120 to diverge. The cross-sectional area of the outlet refers to the cross-sectional area of a single outlet.

[0059] It should be noted that the sterilizer nozzle provided by the present invention is used to spray the sterilizer, that is, the sterilizer ejected from the outlet 120 is diverged. Divergence here means that the sterilizer ejected from a point of the outlet 120 is dispersed to the surrounding areas, and the width of the sterilizer spray is increased. The width of the sterilizer sprayed here refers to the positive projection on the plane where the opening of the package 2 is located; the sterilizer ejected from the outlet 120 is diverged, so that the sterilizer ejected from the outlet 120 is more evenly and widely distributed inside the package 2, and is completely filled in the four corners of the lower part of the package 2, so as to achieve the effect of complete disinfection of the package 2 and ensure the sterile environment inside the package 2.

[0060] like Figure 2 、 Figure 6 and Figure 10 As shown, the distance from the inlet 110 to the outlet 120 along the longitudinal axis YY is in the range of 105 mm to 115 mm. For example, the distance from the inlet 110 to the outlet 120 can be 105 mm, 106 mm, 107 mm, 108 mm, 109 mm, 110 mm, 111 mm, 112 mm, 113 mm, 114 mm, or 115 mm. In other words, the distance from the inlet 110 to the outlet 120 along the sterilant nozzle's path ensures that the sterilant ejected from the outlet 120 does not travel too fast and be ejected from the package 2, thereby preventing the sterilization zone 19 from being contaminated by the sterilant. Therefore, controlling the length from the inlet 110 to the outlet 120 to be in the range of 105 mm to 115 mm ensures both the ejection rate of the sterilant and a more uniform and extensive distribution of the sterilant ejected from the outlet 120 within the package.

[0061] In some specific embodiments, the channel assembly 13 includes a first portion 131 and a second portion 132 connected sequentially along the longitudinal axis YY; the end of the first portion 131 remote from the second portion 132 is connected to the inlet 110, and the end of the second portion 132 remote from the first portion 131 is connected to the outlet 120. Of course, the structures of the first portion 131 and the second portion 132 are different. The sterilant enters the first portion 131 from the inlet 110, flows through the first portion 131, then enters the second portion 132. After flowing through the second portion 132, the sterilant is ejected from the outlet 120. The structure of the flow channels within the first portion 131 and the second portion 132 changes the direction and velocity of the sterilant ejected from the outlet 120.

[0062] like Figure 2-4 As shown in FIG, a schematic diagram of the structure of a sterilant nozzle provided by an embodiment of the present disclosure is disclosed, which is an "A" type sterilant nozzle; Figure 2In the figure, along the longitudinal axis YY, the length of the first part 131 is greater than the length of the second part 132. There is one outlet 120, and along the longitudinal axis YY, the cross-sectional areas of the first part 131 are equal at all locations. That is, when the sterilizer enters the first part 131 from the inlet 110, since the cross-sectional areas of the first part 131 are equal at all locations, the speed of the sterilizer flowing through the first part is equal at all locations. From near the first part 131 to the outlet 120, the cross-sectional area of the second part 132 gradually increases. That is, after the sterilizer flows through the first part 131, it enters the second part 132. After the sterilizer flows through the second part 132, the cross-sectional area of the second part 132 gradually increases, so that the speed of the sterilizer ejected from the outlet 120 slows down, so that the speed of the sterilizer ejected from the outlet 120 is not too fast to be sprayed out from the package 2, thereby causing the sterilization area 19 to be contaminated by the sterilizer. Therefore, the sterilizer is used. Figure 2-Figure 4 The sterilant nozzle shown ensures both a high sterilant spray rate and a more uniform and extensive distribution of the sterilant ejected from the outlet 120 within the package. Along the longitudinal axis YY, the length of the first portion 131 ranges from 70 mm to 90 mm, for example, the length of the first portion 131 is 70 mm, 71 mm, 72 mm, 73 mm, 74 mm, 75 mm, 76 mm, 77 mm, 78 mm, 79 mm, 80 mm, 81 mm, 82 mm, 83 mm, 84 mm, 85 mm, 86 mm, 87 mm, 88 mm, 89 mm, or 90 mm; the length of the second portion 132 ranges from 20 mm to 40 mm, for example, the length of the second portion is 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 32 mm, 34 mm, 36 mm, 38 mm, or 40 mm. Along the plane where the vertical longitudinal axis YY is located, the diameter range of the cross-sectional area at the inlet 110 is 10 mm-15 mm, for example, the diameter range of the cross-sectional area at the inlet 110 is 10 mm, 11 mm, 12 mm, 13 mm, 14 mm or 15 mm; the diameter range of the cross-sectional area at the outlet 120 is 16 mm-20 mm, for example, the diameter range of the cross-sectional area at the outlet 12 is 16 mm, 17 mm, 18 mm, 19 mm or 20 mm.

[0063] like Figure 5-Figure 7 As shown in FIG, a schematic diagram of the structure of another sterilant nozzle provided by an embodiment of the present disclosure is disclosed, which is a "Y" type sterilant nozzle; Figure 5In the embodiment, along the longitudinal axis YY, the length of the first portion 131 is greater than the length of the second portion 132. There are two outlets 120. Along the longitudinal axis YY, the length of the first portion 131 ranges from 80 mm to 90 mm, for example, the length of the first portion 131 is 80 mm, 82 mm, 84 mm, 85 mm, 86 mm, 88 mm, or 90 mm. The cross-sectional area of the first portion 131 is equal at all locations. That is, when the sterilant enters the first portion 131 from the inlet 110, the cross-sectional area of the first portion 131 is equal at all locations, so the sterilant flows at a constant velocity through all locations of the first portion. The length of the second portion 132 ranges from 20 mm to 30 mm, for example, the length of the second portion is 20 mm, 22 mm, 24 mm, 25 mm, 26 mm, 28 mm, or 30 mm. The second portion 132 includes two branch pipes 1321 corresponding to the two outlets 120. The angle θ formed by the axis lines of the two branch pipes 1321 ranges from 10° to 15°, for example, θ is 10°, 11°, 12°, 13°, 14°, or 15°. The diameter of the cross-sectional area of the inlet 110 along the plane perpendicular to the longitudinal axis YY ranges from 10 mm to 20 mm, for example, the diameter of the cross-sectional area of the inlet 110 is 10 mm, 12 mm, 14 mm, 15 mm, 16 mm, 18 mm, or 20 mm. The cross-sectional area of each of the two outlets 120 is the same, and the diameter of the cross-sectional area of each outlet 120 ranges from 5 mm to 10 mm, for example, the diameter of the cross-sectional area of the outlet 120 ranges from 5 mm to 10 mm. The sterilant enters the second part 132 from the first part 131. The diameter of the cross section of the two branch pipes 1321 is smaller than the cross section area of the first part 131. That is, the sterilant flows through the first part 131 and then enters the second part 132. After the sterilant flows through the second part 132, the cross section area of each branch pipe 1321 after the second part 132 is divided into two branch pipes 1321 is smaller than the cross section area of the first part. The sum of the cross section areas of the outlets 120 of the two branch pipes 1321 is basically the same as the cross section area of the inlet 110, so that the speed of the sterilant ejected from the outlet 120 does not change much from the speed of entering the inlet 110. Because the two branch pipes 1321 are dispersed, the width formed by the sterilant ejected from the two outlets 120 is larger, and the sterilant ejected from the outlet 120 is more dispersed. Therefore, the sterilant is used. Figure 5-Figure 7 The sterilant nozzle shown not only ensures the spraying rate of the sterilant, but also ensures that the sterilant ejected from the outlet 120 is more evenly and widely distributed inside the package.

[0064] like Figures 8-10FIG. 1 shows a schematic structural diagram of another sterilant spray nozzle provided by an embodiment of the present disclosure. The figure shows a spiral sterilant spray nozzle. Along the longitudinal axis YY, the length of the first portion 131 is shorter than the length of the second portion 132. There are three outlets 120. Along the longitudinal axis YY, the length of the first portion 131 ranges from 25 mm to 35 mm, for example, 25 mm, 27 mm, 29 mm, 30 mm, 31 mm, 33 mm, or 35 mm. The length of the second portion 132 ranges from 70 mm to 90 mm, for example, 70 mm, 72 mm, 74 mm, 76 mm, 78 mm, 79 mm, 80 mm, 81 mm, 83 mm, 85 mm, 87 mm, 89 mm, or 90 mm. The second portion 132 includes three branch pipes 1322 corresponding to the three outlets 120. The three branch pipes 1322 rotate about the axis of the first portion 131. Along a plane perpendicular to the longitudinal axis YY, the diameter of the cross-sectional area at the inlet 110 ranges from 10 mm to 20 mm, for example, the diameter of the cross-sectional area at the inlet 110 is 10 mm, 12 mm, 14 mm, 15 mm, 16 mm, 18 mm, or 20 mm. The cross-sectional area of each of the three outlets 120 is the same, and the diameter of the cross-sectional area at each outlet 120 ranges from 3 mm to 7 mm, for example, the diameter of the cross-sectional area at the outlet 120 is 3 mm, 4 mm, 5 mm, 6 mm, or 7 mm. That is, the sterilant enters the first portion 131 from the inlet 110 and then enters the second portion 132. The sterilant entering the second portion 132 flows through the three branch pipes 1322 of the second portion 132. The three branch pipes 1322 correspond to each outlet 120 one by one, and the cross-sectional areas of the outlets 120 of the three branch pipes 1322 are equal, thereby ensuring that the speed of the sterilant ejected from the three outlets 120 is the same. The sterilizer enters the second part 132 from the first part 131, and the diameter of the cross-section of one outlet 120 of the three branch pipes 1322 is smaller than the cross-sectional area of the inlet 110 of the first part 131. That is, after the sterilizer flows through the first part 131, it enters the second part 132. After the sterilizer flows through the second part 132, the cross-sectional area of each branch pipe 1322 after the second part 132 is divided into three branch pipes 1322 is smaller than the cross-sectional area of the first part. The sum of the cross-sectional areas of the outlets 120 of the three branch pipes 1322 is basically the same as the cross-sectional area of the inlet 110, so that the speed of the sterilizer ejected from the outlet 120 does not change much from the speed entering the inlet 110. Although the three branch pipes 1321 are connected, the three outlets 120 corresponding to the three branch pipes 1321 diverge outward relative to the longitudinal axis YY direction. The width formed by the sterilizer sprayed from the three outlets 120 is larger, and the sterilizer ejected from the outlet 120 is more dispersed.Therefore adopted. Figures 8-10 The sterilant nozzle shown not only ensures the spraying rate of the sterilant, but also ensures that the sterilant ejected from the outlet 120 is more evenly and widely distributed inside the package.

[0065] like Figure 11 As shown, Figure 11 Figure 1 shows the relative positions of the sterilant spray nozzle and the product. The sterilant spraying position is offset slightly from the center relative to package 2, i.e., eccentrically positioned. This facilitates uniform distribution of the sterilant. The eccentrically positioned sterilant nozzle outlet 120 can expel hot air from package 2, thereby facilitating sterilant distribution. Figure 11 The structure of the sterilant nozzle is Figure 2-Figure 4 The structure of the sterilizer nozzle shown is only an example. Figure 5-Figure 7 The sterilant nozzle structure shown can also be selected as Figures 8-10 The sterilant nozzle structure shown in FIG. The relative position of the sterilant nozzle body 100 is optimized based on the shape of the paper box 2. The axis of the area formed by the outlet 120 is at a certain distance H relative to the axis of the packaging box, for example, H is 2 cm. During the simulation experiment, to determine whether the sterilant within the package 2 is evenly distributed, high-temperature gas was used to simulate the sterilant. High-temperature gas was ejected from the outlet of the sterilant nozzle body 100, and temperature sensors were installed in the four corners of the lower portion of the package 2 to obtain temperature. A more uniform temperature distribution within the package 2 indicates a more uniform distribution of the sterilant, and a higher temperature in the corners of the lower portion of the package indicates that the sterilant is fully filled with the package 2.

[0066] In a second aspect, the present disclosure provides a filling device comprising a plurality of sterilant spray heads according to any one of the first aspects, wherein the plurality of sterilant spray heads are arranged along a preset direction XX. Figure 12 For reference Figure 1 ,exist Figure 12 The dashed box in the figure represents outlet 120 of the sterilizer nozzle that sprays sterilant in the sterilization zone. As can be seen in the dashed box, outlet 120 is slightly offset from the center. This design of outlet 120 facilitates uniform distribution of sterilizer within package 2. The off-center location of outlet 120 facilitates the expulsion of hot air from package 2, thereby facilitating the distribution of sterilizer. The two sterilizer nozzle outlets 120 in the dashed box are not aligned.

[0067] The two outlets 120 in the dotted box are for spraying sterilant. There are seven stations from left to right along the XX direction, and the corresponding grids 16 are transported through the sterilization area 19. The first two stations are for preheating, the middle two stations are for spraying sterilant, and the last three stations are for drying to dry the sterilant. Figure 1The corresponding packages 2 are preheated in a first processing station 22 by blowing hot sterile air through a preheating device. The packages 2 are then sterilized in another processing station 23 by a sterilizing agent, preferably hydrogen peroxide, and then dried in a third processing station 24 by applying sterile air through a drying device.

[0068] like Figure 13 and Figure 14 As shown, Figure 5 Taking the "Y"-shaped sterilizer nozzle shown as an example, the angle range between the arrangement direction of the two branch pipes 1321 in the sterilizer nozzle and the preset direction XX is 35°-55°. The angle range between the arrangement direction of the "Y"-shaped canning head and the preset direction XX is related to the opening shape of the package 2. For example, the angle between the arrangement direction of the two branch pipes 1321 and the preset direction is 35°, 37°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 52°, 54° or 55°. Figure 13 and Figure 14 Corresponding Figure 12 Schematic diagram of the arrangement of the nozzles for spraying sterilizer at the two middle stations. Figure 13 is the first of the two corresponding intermediate stations, Figure 14 It is the second of the two corresponding intermediate stations.

[0069] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if such modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. A sterilant spray nozzle, characterized in that: Used for spraying a sterilant into a packaging box, the sterilant spray head comprises: a body (100), the body (100) having a longitudinal axis (YY), and along the direction of the longitudinal axis (YY), the body (100) comprising an inlet (110) and an outlet (120); The body (100) further includes a channel assembly (130), wherein the channel assembly (130) connects the inlet (110) and the outlet (120) and is used to transport the sterilant from the inlet (110) to the outlet (120); Wherein, along a plane perpendicular to the longitudinal axis (YY), the cross-sectional area of the inlet (110) and the cross-sectional area of the outlet (120) are different, the sterilant flows through the channel assembly (130) and is ejected from the outlet (120), and the channel assembly (130) causes the sterilant ejected from the outlet (120) to diverge. The channel assembly (130) comprises a first part (131) and a second part (132) connected in sequence along the longitudinal axis (YY); an end of the first part (131) away from the second part (132) is connected to the inlet (110), and an end of the second part (132) away from the first part (131) is connected to the outlet (120); There are three outlets (120), and the second part (132) includes three branch pipelines (1322) corresponding to the three outlets (120). Each of the three branch pipelines (1322) rotates around the axis of the first part (131), and the three branch pipelines (1322) are connected.

2. The sterilant spray nozzle according to claim 1, characterized in that: The distance between the inlet (110) and the outlet (120) along the longitudinal axis (YY) is in the range of 105 mm to 115 mm.

3. The sterilant spray nozzle according to claim 1, characterized in that: The three outlets (120) are connected.

4. The sterilant spray nozzle according to claim 1, characterized in that: The sum of the cross-sectional areas of the three outlets (120) is substantially the same as the cross-sectional area of the inlet (110).

5. The sterilant spray nozzle according to claim 1, characterized in that: The three outlets (120) are located in the same exit plane perpendicular to the longitudinal axis (YY).

6. The sterilant spray nozzle according to claim 1, characterized in that: Along the longitudinal axis (YY), the length of the first portion (131) is smaller than the length of the second portion (132).

7. The sterilant spray head according to claim 6, characterized in that: Along the longitudinal axis (YY) direction, the length of the first portion (131) ranges from 25 mm to 35 mm; the length of the second portion (132) ranges from 70 mm to 90 mm.

8. The sterilant spray head according to claim 7, characterized in that: The three branch pipelines (1322) rotate in a spiral shape around the axis of the first part (131).

9. The sterilant spray head according to claim 8, characterized in that: Along a plane perpendicular to the longitudinal axis (YY), the diameter of the cross-sectional area at the inlet (110) ranges from 10 mm to 20 mm; The cross-sectional area of each of the three outlets (120) is the same, and the diameter of the cross-sectional area at the outlet (120) ranges from 3 mm to 7 mm.

10. The sterilant spray nozzle according to any one of claims 1 to 9, characterized in that: The axis of the area formed by the outlet (120) is at a certain distance from the axis of the packaging box.

11. A filling device, characterized in that: The sterilant spray head comprises a plurality of sterilant spray heads according to any one of claims 1 to 10, wherein the plurality of sterilant spray heads are arranged along a preset direction (XX).

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