Filling head, filling device and filling method thereof

Abstract

This disclosure provides a filling head, a filling apparatus, and a filling method thereof. The filling head has an axis and includes an outlet region comprising: a first outlet configured to eject liquid along a first liquid discharge direction, the first liquid discharge direction being inclined relative to the axis and having a first orthographic projection on a plane perpendicular to the axis; and a second outlet configured to eject liquid along a second liquid discharge direction different from the first liquid discharge direction, the second liquid discharge direction being inclined relative to the axis and having a second orthographic projection on the plane; wherein the first orthographic projection and the second orthographic projection do not overlap, and the extension lines of the first and second orthographic projections intersect each other. The filling head provided by the embodiments of this disclosure can avoid or reduce liquid splashing or foam formation, improve filling quality, and avoid contamination of filling equipment.

Description

Technical Field

[0001] This disclosure relates to the field of packaging, and more particularly to a filling head, a filling apparatus, and a filling method thereof. Background Technology

[0002] Liquid foods such as milk, juice, or yogurt can be filled into packaging using filling equipment. During the filling process, the liquid food is filled into the packaging through the filling head. Due to the high flow rate of the liquid, the liquid sprayed or flowing out of the filling head can easily form liquid splashes or foam in the packaging, which can affect the sealing of the packaging or contaminate the filling equipment. Summary of the Invention

[0003] This disclosure provides a filling head, filling device, and filling method. By ensuring that the first orthographic projection of the first outlet in the first liquid discharge direction and the second orthographic projection of the second outlet in the second liquid discharge direction do not overlap and that the extension lines of the first and second orthographic projections intersect each other, it can prevent two liquid streams ejected from the first outlet and the second outlet and reflected by the packaging sidewall from colliding head-on. This reduces liquid splashing or foam formation, improves filling quality, and avoids contamination of the filling equipment.

[0004] According to a first aspect of this disclosure, a filling head is provided for filling liquid and having an axis. The filling head includes an outlet region configured to allow the liquid to flow out, the outlet region including: a first outlet configured to eject the liquid along a first discharge direction, the first discharge direction being inclined relative to the axis and having a first orthographic projection on a plane perpendicular to the axis; and a second outlet configured to eject the liquid along a second discharge direction different from the first discharge direction, the second discharge direction being inclined relative to the axis and having a second orthographic projection on the plane; wherein the first orthographic projection and the second orthographic projection do not overlap each other, and the extension lines of the first orthographic projection and the second orthographic projection intersect each other.

[0005] In at least some embodiments, the outlet region further includes: a third outlet configured to eject the liquid along a third liquid discharge direction, the third liquid discharge direction being different from both the first liquid discharge direction and the second liquid discharge direction, the third liquid discharge direction being inclined relative to the axis and having a third orthographic projection on the plane; the third orthographic projection not overlapping with either the first orthographic projection or the second orthographic projection, and the extension line of at least one of the first orthographic projections intersecting the extension line of the third orthographic projection.

[0006] In at least some embodiments, the extension line of the third orthographic projection intersects the extension line of the second orthographic projection.

[0007] In at least some embodiments, the first outlet, the second outlet, and the third outlet are distributed circumferentially around the axis.

[0008] In at least some embodiments, the outlet region further includes: a fourth outlet configured to eject the liquid along a fourth liquid ejection direction, the fourth liquid ejection direction being different from the first liquid ejection direction, the second liquid ejection direction, and the third liquid ejection direction, the fourth liquid ejection direction being inclined relative to the axis and having a fourth orthographic projection on the plane; the fourth orthographic projection does not overlap with the first, second, and third orthographic projections, and the extension lines of at least two of the first, second, and third orthographic projections intersect the extension line of the fourth orthographic projection.

[0009] In at least some embodiments, the extension line of the fourth orthographic projection intersects the extension lines of the first orthographic projection and the third orthographic projection, respectively.

[0010] In at least some embodiments, the first discharge direction has a first tilt angle with respect to the axis; the second discharge direction has a second tilt angle with respect to the axis; the third discharge direction has a third tilt angle with respect to the axis; and the fourth discharge direction has a fourth tilt angle with respect to the axis; wherein the first tilt angle, the second tilt angle, the third tilt angle, and the fourth tilt angle are equal to each other.

[0011] In at least some embodiments, the first outlet, the second outlet, the third outlet, and the fourth outlet are distributed circumferentially around the axis.

[0012] In at least some embodiments, the number of each of the first outlet, the second outlet, the third outlet, and the fourth outlet is multiple.

[0013] In at least some embodiments, the number of the first outlet, the second outlet, the third outlet, and the fourth outlet is the same.

[0014] In at least some embodiments, the filling head fills a package with liquid, the package including an opening and a wall surrounding the opening, the liquid being filled into the package through the opening; wherein the wall includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the first sidewall and the third sidewall being opposite each other in a first direction, the second sidewall and the fourth sidewall being opposite each other in a second direction, the first direction and the second direction being perpendicular to each other and both parallel to the plane; wherein the first outlet is configured such that liquid ejected along the first ejection direction collides with the first sidewall, and the second outlet is configured such that liquid ejected along the second ejection direction collides with the second sidewall.

[0015] In at least some embodiments, the package has a longitudinal axis, and the liquid that has collided with the first sidewall and the second sidewall flows circumferentially within the package around the longitudinal axis.

[0016] In at least some embodiments, the outlet region further includes: a third outlet configured to eject the liquid along a third liquid ejection direction, the third liquid ejection direction being different from both the first liquid ejection direction and the second liquid ejection direction, the third liquid ejection direction being inclined relative to the axis and having a third orthographic projection on the plane; wherein, the third outlet is configured such that the liquid ejected along the third liquid ejection direction collides with the third sidewall.

[0017] In at least some embodiments, the outlet region further includes: a fourth outlet configured to eject the liquid along a fourth liquid ejection direction, the fourth liquid ejection direction being different from the first liquid ejection direction, the second liquid ejection direction and the third liquid ejection direction, the fourth liquid ejection direction being inclined relative to the axis and having a fourth orthographic projection on the plane; wherein, the fourth outlet is configured to cause the liquid ejected along the fourth liquid ejection direction to collide with the fourth sidewall.

[0018] In at least some embodiments, there is a first included angle between the first orthographic projection and the first sidewall; a second included angle between the second orthographic projection and the second sidewall; a third included angle between the third orthographic projection and the third sidewall; and a fourth included angle between the fourth orthographic projection and the fourth sidewall, wherein the first included angle, the second included angle, the third included angle, and the fourth included angle are equal to each other.

[0019] In at least some embodiments, the first included angle, the second included angle, the third included angle, and the fourth included angle are all acute angles.

[0020] In at least some embodiments, two adjacent sidewalls of the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall are connected to each other; the liquid collides with the wall to form a collision zone, which is not located at the junction of the two adjacent sidewalls.

[0021] In at least some embodiments, the liquid collides with the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall to form a first collision zone, a second collision zone, a third collision zone, and a fourth collision zone, respectively, wherein the first collision zone, the second collision zone, the third collision zone, and the fourth collision zone are centrally symmetrical with respect to the longitudinal axis of the packaging.

[0022] In at least some embodiments, the outlet region further includes: a third outlet configured to eject the liquid along a third liquid discharge direction; wherein, the filling head further includes: an inlet region configured to allow the liquid to flow in and to be opposite to the outlet region on the axis, the inlet region including: a first inlet configured to communicate with the first outlet liquid; a second inlet configured to communicate with the second outlet liquid; and a third inlet configured to communicate with the third outlet liquid; wherein, the first inlet, the second inlet, and the third inlet are distributed circumferentially around the axis.

[0023] In at least some embodiments, the outlet region further includes a fourth outlet configured to eject the liquid along a fourth liquid discharge direction; wherein the inlet region includes a fourth inlet configured to communicate with the fourth liquid outlet; wherein the first inlet, the second inlet, the third inlet, and the fourth inlet are distributed circumferentially around the axis.

[0024] According to a second aspect of this disclosure, a filling apparatus is provided, including the aforementioned filling head.

[0025] According to a third aspect of this disclosure, a filling method is provided for filling a liquid into a package, the filling method comprising: ejecting the liquid along a first discharge direction, the first discharge direction being inclined relative to a longitudinal axis of the package and having a first orthographic projection on a plane perpendicular to the longitudinal axis; ejecting the liquid along a second discharge direction, the second discharge direction being different from the first discharge direction, the second discharge direction being inclined relative to the longitudinal axis and having a second orthographic projection on the plane; wherein the first orthographic projection and the second orthographic projection do not overlap each other, and the extension lines of the first orthographic projection and the extension lines of the second orthographic projection intersect each other.

[0026] In at least some embodiments, the filling method further includes: ejecting the liquid along a third liquid ejection direction, the third liquid ejection direction being different from both the first liquid ejection direction and the second liquid ejection direction, the third liquid ejection direction being inclined relative to the axis and having a third orthographic projection on the plane; wherein the third orthographic projection does not overlap with either the first orthographic projection or the second orthographic projection, and the extension line of at least one of the first orthographic projections intersects with the extension line of the third orthographic projection.

[0027] In at least some embodiments, the filling method further includes: ejecting the liquid along a fourth liquid ejection direction, the fourth liquid ejection direction being different from the first liquid ejection direction, the second liquid ejection direction, and the third liquid ejection direction, the fourth liquid ejection direction being inclined relative to the axis and having a fourth orthographic projection on the plane; wherein the fourth orthographic projection does not overlap with the first, second, and third orthographic projections, and the extension lines of at least two of the first, second, and third orthographic projections intersect the extension line of the fourth orthographic projection.

[0028] In at least some embodiments, the package includes an opening and a wall surrounding the opening, the wall including a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the first sidewall and the third sidewall being opposite to each other in a first direction, the second sidewall and the fourth sidewall being opposite to each other in a second direction, the first direction and the second direction being perpendicular to each other and both parallel to the plane.

[0029] In at least some embodiments, the filling method includes: liquid ejected along a first discharge direction colliding with a first sidewall; liquid ejected along a second discharge direction colliding with a second sidewall; liquid ejected along a third discharge direction colliding with a third sidewall; liquid ejected along a fourth discharge direction colliding with a fourth sidewall, and after colliding with the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall, the liquid flows circumferentially around the longitudinal axis. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0031] Figure 1 A perspective view of a filling head provided in an embodiment of this disclosure.

[0032] Figure 2 for Figure 1 A schematic diagram of the structure of the outlet area of ​​the filling head.

[0033] Figure 3 for Figure 1 Side view of the filling head.

[0034] Figure 4 for Figure 1 A schematic diagram of the filling head in the filling state.

[0035] Figure 5 for Figure 1 A planar schematic diagram of the four liquid outlet directions of the filling head.

[0036] Figure 6 A plan view of the four liquid outlet directions of another filling head provided in an embodiment of this disclosure.

[0037] Figure 7 for Figure 1 A schematic diagram of the structure of the inlet area of ​​the filling head.

[0038] Figure 8 A perspective view of another filling head provided for an embodiment of this disclosure.

[0039] Figure 9 for Figure 8 A schematic diagram of the structure of the outlet area of ​​the filling head.

[0040] Figure 10 This is a schematic flowchart of the filling method provided in the embodiments of this disclosure. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” indicate that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0043] In a filling apparatus, a filling head is used to fill liquid into packaging. The filling head may include multiple channels, each with an inlet and an outlet, through which liquid enters and exits. For example, the filling head may be used in conjunction with a liquid blocking component and a valve stem. The valve stem is connected to the liquid blocking component and can move the liquid blocking component up and down relative to the filling head along its axial direction. When the valve stem is moved to move the liquid blocking component upwards along the filling head's axis (i.e., away from the filling head), the gap between the liquid blocking component and the filling head inlet increases, allowing liquid to flow into the filling head inlet without obstruction. Conversely, when the valve stem is moved downwards along the filling head's axis (i.e., closer to the filling head), the gap between the liquid blocking component and the filling head inlet decreases, blocking the liquid and preventing it from flowing into the filling head.

[0044] During the filling process, to reduce liquid splashing inside the packaging, the liquid outlet direction can be set to be tilted outwards, meaning there is a certain angle between the outlet direction and the axis of the filling head, causing the liquid to enter obliquely towards the side wall of the packaging. However, when the liquid jet velocity is high, the liquid entering obliquely on the side wall will form a reflected liquid stream. In particular, two liquid streams entering two opposite side walls may collide head-on after forming two reflected liquid streams, causing greater splashing or foaming, affecting filling quality and contaminating the filling equipment.

[0045] To address the above problems, this disclosure provides a filling head for filling liquids and having an axis. The filling head includes an outlet region configured to allow the liquid to flow out, the outlet region including a first outlet and a second outlet. The first outlet is configured to eject the liquid along a first discharge direction, the first discharge direction being inclined relative to the axis and having a first orthographic projection on a plane perpendicular to the axis. The second outlet is configured to eject the liquid along a second discharge direction, the second discharge direction being different from the first discharge direction, the second discharge direction being inclined relative to the axis and having a second orthographic projection on the plane; wherein the first orthographic projection and the second orthographic projection do not overlap each other, and the extension lines of the first orthographic projection and the second orthographic projection intersect each other.

[0046] In the filling head provided in the above embodiments, by making the first orthographic projection of the first liquid outlet direction and the second orthographic projection of the second liquid outlet direction not overlap each other and making the extension lines of the first orthographic projection and the extension lines of the second orthographic projection intersect each other, it is possible to avoid the two liquid streams ejected from the first outlet and the second outlet and reflected by the packaging sidewall from colliding head-on, thereby reducing liquid splashing or foam formation, improving filling quality, and avoiding contamination of the filling equipment.

[0047] In this embodiment of the disclosure, the term "liquid exit direction" refers to the direction in which the liquid exits from the outlet, and can also be understood as the orientation of the outlet. Taking the first outlet as an example, the liquid exiting from the first outlet is ejected along the first exit direction or the first orientation of the first outlet.

[0048] In this embodiment of the disclosure, the term "axis" includes the rotation axis or central axis of the filling head. When the filling head is positioned vertically, the axis also extends vertically. The term "plane perpendicular to the axis" can be a virtual plane or an actual physical plane. In some embodiments, the plane perpendicular to the axis is the plane containing the outlet area of ​​the filling head.

[0049] The present disclosure will now be described through several specific embodiments. To keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present disclosure appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0050] Figure 1 A perspective view of a filling head provided in an embodiment of this disclosure; Figure 2 for Figure 1 A schematic diagram of the structure of the outlet area of ​​the filling head; Figure 3 for Figure 1 Side view of the filling head.

[0051] like Figures 1 to 3As shown, the filling head 1 provided in this embodiment includes an inlet region 20 and an outlet region 10. In some embodiments, the filling head 1 includes a cylindrical body 1A, which has two opposing ends, namely a first end (e.g., the upper end shown in the figure) and a second end (e.g., the lower end shown in the figure). The inlet region 20 is located at the first end of the cylindrical body 1A, and the outlet region 10 is located at the second end of the cylindrical body 1A. The inlet region 20 and the outlet region 10 are opposite to each other in the extending direction of the cylindrical body 1A (e.g., the vertical direction shown in the figure).

[0052] In some embodiments, the inlet region 20 includes an inlet for liquid to flow in, and the outlet region 10 includes an outlet for liquid to flow out. For example, to increase the filling volume of liquid, the inlet region 20 may include multiple inlets, and the outlet region 10 may include multiple outlets. Liquid food (hereinafter referred to as liquid) to be filled into packaging may flow into the filling head 1 through multiple inlets, and then flow out of the filling head 1 through multiple outlets and be filled into packaging. In embodiments of this disclosure, "multiple" refers to two or more.

[0053] In some embodiments, the number of multiple outlets is the same as the number of multiple inlets, and the multiple outlets and multiple inlets are set to correspond one-to-one. In this way, when liquid flows into multiple inlets, it can flow out from multiple outlets at the same time, which increases the filling volume per unit time and ensures that the liquid has a high filling speed.

[0054] It is understandable that multiple outlets and multiple inlets may not be configured in a one-to-one correspondence. In some embodiments, one inlet may correspond to multiple outlets, or multiple inlets may correspond to one outlet, which can still allow liquid to flow from the inlet area 20 to the outlet area 10 and then be filled into packaging.

[0055] For example, such as Figure 1 and Figure 2 As shown, the outlet area 10 includes eight outlets: the first outlet 11, the second outlet 12, the third outlet 13, the fourth outlet 14, the fifth outlet 11a, the sixth outlet 12a, the seventh outlet 13a, and the eighth outlet 14a. Of the eight outlets, the first outlet 11 and the fifth outlet 11a have the same discharge direction (e.g., the first discharge direction R11 shown in the figure), the second outlet 12 and the sixth outlet 12a have the same discharge direction (e.g., the second discharge direction R12 shown in the figure), the third outlet 13 and the seventh outlet 13a have the same discharge direction (e.g., the third discharge direction R13 shown in the figure), and the fourth outlet 14 and the eighth outlet 14a have the same discharge direction (e.g., the fourth discharge direction R14 shown in the figure).

[0056] By setting the first liquid outlet direction R11, the second liquid outlet direction R12, the third liquid outlet direction R13, and the fourth liquid outlet direction R14 to be different from each other, the liquid can be sprayed into the packaging in different directions, thereby forming different impact positions. In this way, when the liquid flow at different impact positions is bounced or reflected by the wall, it can avoid the reflected liquid flow colliding head-on, thereby reducing liquid splashing or foam caused by head-on collision.

[0057] The following description of the liquid filling process uses the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14 as examples. It can be understood that the fifth outlet 11a, the sixth outlet 1201, the seventh outlet 13a, and the eighth outlet 14a can refer to the structure and orientation of the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14, respectively, and will not be repeated here.

[0058] Reference Figure 1 and Figure 3 For example, the filling head 1 has an axis O1 that extends in a vertical direction (e.g., the Z direction shown in the figure). The outlet region 10 includes a first outlet 11 and a second outlet 12. The first outlet 11 is configured to eject liquid along a first liquid discharge direction R11, which is inclined relative to the axis O1. The second outlet 12 is configured to eject liquid along a second liquid discharge direction R12, which is different from the first liquid discharge direction R11, and is inclined relative to the axis O1.

[0059] In this embodiment, both the first liquid outlet direction R11 and the second liquid outlet direction R12 are inclined relative to the axis O1, which can reduce the possibility of liquid splashing. Taking the first liquid outlet direction R11 as an example, when the first liquid outlet direction R11 is parallel to the axis O1, the liquid is sprayed directly toward the bottom surface of the packaging 1, and the impact is the strongest at this time, and the possibility of liquid splashing or foaming is also greater. When the first liquid outlet direction R11 is inclined relative to the axis O1, the liquid will be sprayed toward the side wall of the packaging 1 and flow downward along the side wall by gravity, which can reduce the possibility of liquid splashing to a certain extent.

[0060] Figure 4 for Figure 1 A schematic diagram of the filling head in the filling state. Figure 5 for Figure 1 A planar schematic diagram of the four liquid outlet directions of the filling head.

[0061] For example, such as Figure 4 and Figure 5As shown, the filling head 1 fills the package 1 with liquid. The package 1 includes an opening 201 and a wall surrounding the opening 201. The liquid is filled into the package 1 through the opening 201. The wall of the package 1 includes a first side wall S1, a second side wall S2, a third side wall S3, and a fourth side wall S4. The first side wall S1 and the third side wall S3 are opposite each other in a first direction (e.g., the X direction shown in the figure), and the second side wall S2 and the fourth side wall S4 are opposite each other in a second direction (e.g., the Y direction shown in the figure). The first direction X and the second direction Y are perpendicular to each other and both are parallel to the XY plane.

[0062] For example, such as Figure 5 As shown, the first liquid discharge direction R11 has a first orthographic projection T11 on a plane perpendicular to the axis O1 (e.g., the XY plane shown in the figure), and the second liquid discharge direction R12 has a second orthographic projection T12 on the XY plane; wherein, the first orthographic projection T11 and the second orthographic projection T12 do not overlap with each other, and the extension line of the first orthographic projection T11 (e.g., the dashed line L11 shown in the figure, hereinafter referred to as the first extension line L11) and the extension line of the second orthographic projection T12 (e.g., the dashed line L12 shown in the figure, hereinafter referred to as the second extension line L12) intersect each other.

[0063] In this embodiment, since the liquid discharge direction is directional, its orthographic projection in the XY plane is also directional. For example, the first orthographic projection T11 of the first liquid discharge direction R11 points to the first sidewall S1 of the packaging 2, and the second orthographic projection T12 of the second liquid discharge direction R12 points to the second sidewall S2 of the packaging 2. In this document, "the extension line of the orthographic projection" refers to the straight line containing the orthographic projection, which is not directional. For example, the extension line of the first orthographic projection T11 is the first extension line L11, and the extension line of the second orthographic projection T12 is the second extension line L12.

[0064] When liquid is ejected from the first outlet 11 and the second outlet 12, two liquid streams will be formed, one along the first outlet direction R11 and the other along the second outlet direction R12 (the shape of each liquid stream can be referenced). Figure 4 (The shape of the liquid stream ejected from the first outlet 11 or the third outlet 13). After the two liquid streams enter the packaging 2, they collide with the first side wall S1 and the second side wall S2 of the packaging 2 respectively and form two reflective liquid streams. The orthographic projections of these two reflective liquid streams in the XY plane are the first orthographic projection TF11 and the second orthographic projection TF12 respectively.

[0065] exist Figure 5In the XY plane shown, assuming the first orthographic projection T11 and the second orthographic projection T12 are on the same straight line and in opposite directions (e.g., the direction of the first orthographic projection T11 is vertically upward, and the direction of the second orthographic projection T12 is vertically downward), the two reflective liquid streams will converge at a certain point inside the packaging 1, forming a head-on collision (i.e., the first orthographic projection TF11 and the second orthographic projection TF12 are on the same straight line and directly opposite each other). Due to the large impact force generated by the collision, liquid splashing or foaming is easily generated inside the packaging 1. On the one hand, the splashed liquid may remain at the opening of the packaging 1, affecting the seal at the packaging opening; on the other hand, when it splashes outside the packaging, it may contaminate the filling equipment. Especially when the filling liquid contains particulate matter, it can easily clog the filling outlet, making the filling equipment unable to work properly.

[0066] Therefore, in this embodiment of the present disclosure, by setting the first orthographic projection T11 of the first liquid discharge direction R11 and the second orthographic projection T12 of the second liquid discharge direction R12 to not overlap with each other and making the first extension line L11 of the first orthographic projection T11 and the second extension line L12 of the second orthographic projection T12 intersect each other, the first orthographic projection TF11 and the second orthographic projection TF12 are prevented from being on the same straight line, thereby preventing the two reflective liquid streams from colliding head-on and avoiding the formation of liquid splashes or foam in the packaging 1.

[0067] For example, such as Figure 5 As shown, the first outlet 11 is configured to cause the liquid ejected along the first ejection direction R11 to collide with the first sidewall S1, and the second outlet 12 is configured to cause the liquid ejected along the second ejection direction R12 to collide with the second sidewall S2. That is, the first orthographic projection T11 and the second orthographic projection T12 face two different sidewalls in the packaging 1. Due to the high flow velocity of the liquid during the filling process, the two streams of liquid ejected from the first outlet 11 and the second outlet 12 will flow circumferentially around the longitudinal axis O2 of the packaging 2 after colliding with the sidewalls, for example, along... Figure 5 The flow is clockwise as shown. This flow pattern is advantageous for filling liquids because during the flow, the liquid generates a centripetal force towards the center, further promoting the liquid to flow in the same direction (which can be called swirling or eddy), thereby further avoiding the formation of liquid splashes or foam.

[0068] In this embodiment of the disclosure, the longitudinal axis O2 of the packaging 2 and the axis O1 of the filling head 1 can be set to be coaxial or non-coaxial, such as... Figure 4As shown, the longitudinal axis O2 and axis O1 are set to be coaxial, which ensures that the filling head 1 is aligned with the package 2 during filling. The circumferential direction of the longitudinal axis O2 or axis O1 can be counterclockwise or clockwise. It is understood that this embodiment is described using the clockwise direction as an example. In other embodiments, the liquid can also flow in the counterclockwise direction, and this embodiment does not limit this.

[0069] In this embodiment of the disclosure, the non-overlapping of the first orthographic projection T11 and the second orthographic projection T12 means that there is no overlapping area between the first orthographic projection T11 and the second orthographic projection T12. In this way, the two liquid streams ejected from the first outlet 11 and the second outlet 12 will not meet before colliding with the side wall of the packaging, thereby further preventing liquid splashing caused by the premature meeting of the two liquid streams.

[0070] In this embodiment of the disclosure, only one first outlet may be provided, or multiple first outlets may be provided (e.g., first outlet 11 and fifth outlet 11a), and this embodiment of the disclosure does not limit this. Similarly, only one second outlet may be provided, or multiple second outlets may be provided (e.g., second outlet 12 and sixth outlet 1201), and this embodiment of the disclosure does not limit this. By providing first outlet 11 and fifth outlet 11a, and second outlet 12 and sixth outlet 1201, the liquid filling volume per unit time can be increased.

[0071] For example, such as Figure 1 , Figure 2 , Figure 4 As shown, the outlet area 10 also includes a third outlet 13, which is configured to eject liquid along a third liquid outlet direction R13. The third liquid outlet direction R13 is different from both the first liquid outlet direction R11 and the second liquid outlet direction R12. The third liquid outlet direction R13 is inclined relative to the axis O1. Setting the third liquid outlet direction R13 to be inclined relative to the axis O1 can also reduce the possibility of liquid splashing. The reason for this can be referred to in the previous description of the first liquid outlet direction R11 and the second liquid outlet direction R12, and will not be repeated here.

[0072] For example, such as Figure 5 As shown, the third liquid outlet direction R13 has a third orthographic projection T13 on the XY plane. The third orthographic projection T13 does not overlap with either the first orthographic projection T11 or the second orthographic projection T12; that is, there is no overlapping area between the third orthographic projection T13 and the first orthographic projection T11, and there is also no overlapping area between the third orthographic projection T13 and the second orthographic projection T12. Thus, the three liquid streams ejected from the first outlet 11, the second outlet 12, and the third outlet 13 will not meet before colliding with the sidewall of the packaging, thereby further preventing liquid splashing caused by any two liquid streams meeting prematurely.

[0073] In some embodiments, the extension line of at least one of the first orthographic projection T11 and the second orthographic projection T12 intersects the extension line of the third orthographic projection T13. For example, as Figure 5 As shown, the extension line of the third orthographic projection T13 (e.g., the dashed line L13 shown in the figure, hereinafter referred to as the third extension line L13) intersects with the second extension line L12 of the second orthographic projection T12.

[0074] When liquid is ejected from the first outlet 11, the second outlet 12, and the third outlet 13, three liquid streams are formed, spraying along the first liquid outlet direction R11, the second liquid outlet direction R12, and the third liquid outlet direction R13. After the three liquid streams enter the packaging 2, they collide with the first side wall S1, the second side wall S2, and the third side wall S3 of the packaging 2, respectively, and form three reflective liquid streams. The orthographic projections of these three reflective liquid streams in the XY plane are the first reflective orthographic projection TF11, the second reflective orthographic projection TF12, and the third reflective orthographic projection TF13, respectively.

[0075] exist Figure 5 In the XY plane shown, assuming the third orthographic projection T13 and the second orthographic projection T12 are on the same straight line and in opposite directions (e.g., the direction of the third orthographic projection T13 is horizontal to the right, and the direction of the second orthographic projection T12 is horizontal to the left), the two reflective liquid streams will converge at a certain point inside the packaging 2, forming a head-on collision (i.e., the third orthographic projection TF13 and the second orthographic projection TF12 are on the same straight line and directly opposite each other). Due to the large impact force generated by the collision, liquid splashing or foaming is easily generated inside the packaging 2. On the one hand, the splashed liquid may remain at the opening of the packaging 2, affecting the seal at the packaging opening; on the other hand, when it splashes outside the packaging, it may contaminate the filling equipment. Especially when the filling liquid contains particulate matter, it can easily clog the filling outlet, making the filling equipment unable to work properly.

[0076] Therefore, in this embodiment of the present disclosure, by having the third extension line L13 of the third orthographic projection T13 and the second extension line L12 of the second orthographic projection T12 intersect each other, the third orthographic projection TF13 and the second orthographic projection TF12 are prevented from being on the same straight line, thereby preventing the two reflective liquid streams from colliding head-on and avoiding the formation of liquid splashes or foams in the packaging 2.

[0077] In some embodiments, the first orthographic projection T11, the second orthographic projection T12, and the third orthographic projection T13 are configured to be oriented in the same circumferential direction along the axis O1 of the filling head 1 (or the longitudinal axis O2 of the packaging). Figure 5As shown, the first orthographic projection T11, the second orthographic projection T12, and the third orthographic projection T13 are oriented in a basically clockwise direction. This arrangement avoids collisions between the three liquid streams ejected from the first outlet 11, the second outlet 12, and the third outlet 13. Furthermore, it facilitates the formation of vortices or eddies after the three liquid streams collide with the sidewalls, reducing liquid splashing and, due to the centripetal force of the vortex itself, causing surrounding liquids (such as the liquid streams later filled into the packaging) to flow in the same direction.

[0078] In some embodiments, the third extension line L13 of the third orthographic projection T13 may be parallel to or not parallel to the first extension line L11 of the first orthographic projection T11. For example, as Figure 5 As shown, the third extension line L13 is parallel to the first extension line L11 and they are spaced apart in a direction parallel to the XY plane (e.g., in the X direction shown in the figure).

[0079] When the third extension line L13 and the first extension line L11 are parallel to each other but without any gap (i.e., they are on the same straight line), the reflected streams of the two liquid streams will collide head-on.

[0080] In this embodiment of the disclosure, since the third extension line L13 and the first extension line L11 are parallel to each other and there is a certain distance between them, the third reflection orthographic projection TF13 and the first reflection orthographic projection TF11 can be avoided to be on the same straight line, thereby preventing the two reflected liquid streams corresponding to the two liquid streams ejected from the first outlet 11 and the third outlet 13 from colliding head-on, and further avoiding the formation of liquid splashes or foam in the packaging 2.

[0081] The above embodiments only show the case where the third extension line L13 intersects with the second extension line L12. It is understood that in other embodiments, the third extension line L13 may intersect with the first extension line L11, and the above technical effect can be achieved in the same way. It will not be described in detail here.

[0082] In addition, when the third extension line L13 and the first extension line L11 are not parallel to each other, the third extension line L13 intersects with both the first extension line L11 and the second extension line L12. In this case, it can also form a vortex to reduce splashing.

[0083] For example, such as Figure 5As shown, the third outlet 11 is configured so that the liquid ejected along the third ejection direction R13 collides with the third sidewall S3. That is, the first orthographic projection T11, the second orthographic projection T12, and the third orthographic projection T13 are respectively oriented towards three different sidewalls in the package 2 (i.e., the first sidewall S1, the second sidewall S2, and the third sidewall S3). This is more conducive to the three liquid streams ejected from the first outlet 11, the second outlet 12, and the third outlet 13 colliding with the three different sidewalls and then moving along... Figure 5 The clockwise flow shown creates a swirling flow, further preventing liquid splashing or foaming during filling.

[0084] For example, such as Figure 1 , Figure 2 , Figure 4 As shown, the outlet area 10 also includes a fourth outlet 14, configured to eject liquid along a fourth liquid outlet direction R14. This fourth liquid outlet direction R14 differs from the first liquid outlet direction R11, the second liquid outlet direction R12, and the third liquid outlet direction R13. The fourth liquid outlet direction R14 is inclined relative to the axis O1. Setting the fourth liquid outlet direction R14 to be inclined relative to the axis O1 also reduces the possibility of liquid splashing. The reason for this can be referred to in the previous description of the first liquid outlet direction R11 and the second liquid outlet direction R12, and will not be repeated here.

[0085] For example, such as Figure 5 As shown, the fourth liquid outlet direction R14 has a fourth orthographic projection T14 on the XY plane. The fourth orthographic projection T14 does not overlap with the first orthographic projection T11, the second orthographic projection T12, or the third orthographic projection T13; that is, there is no overlapping area between the fourth orthographic projection T14 and any one of the first, second, second, or third orthographic projections T11 and T13. Thus, the four liquid streams ejected from the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14 will not meet before colliding with the sidewall of the packaging, thereby further preventing liquid splashing caused by any two liquid streams meeting prematurely.

[0086] In some embodiments, the extension lines of at least two of the first orthographic projections T11, the second orthographic projection T12, and the third orthographic projection T13 intersect the extension line of the fourth orthographic projection T14. For example, as... Figure 5 As shown, the extension line of the fourth orthographic projection T14 (for example, the dashed line L14 shown in the figure, hereinafter referred to as the fourth extension line L14) intersects with the first extension line L11 of the first orthographic projection T11 and the third extension line L13 of the third orthographic projection T13, respectively.

[0087] When liquid is ejected from the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet, four liquid streams are formed along the first outlet direction R11, the second outlet direction R12, the third outlet direction R13, and the fourth outlet direction R14. After the four liquid streams enter the packaging 2, they collide with the first side wall S1, the second side wall S2, the third side wall S3, and the fourth side wall S4 of the packaging 2, respectively, and form four reflective liquid streams. The orthographic projections of these four reflective liquid streams in the XY plane are the first reflective orthographic projection TF11, the second reflective orthographic projection TF12, the third reflective orthographic projection TF13, and the fourth reflective orthographic projection TF14, respectively.

[0088] In this embodiment of the present disclosure, by setting the fourth extension line L14 to intersect with the first extension line L11 and the third extension line L13, it is possible to avoid the fourth orthographic projection TF14 and the first orthographic projection TF11 being on the same straight line, and also to avoid the fourth orthographic projection TF14 and the third orthographic projection TF13 being on the same straight line. This prevents the two reflected liquid streams corresponding to the two liquid streams ejected from the first outlet 11 and the fourth outlet 14 from colliding head-on, and also prevents the two reflected liquid streams corresponding to the two liquid streams ejected from the third outlet 13 and the fourth outlet 14 from colliding head-on, thereby avoiding the formation of liquid splashes or foams inside the packaging 2.

[0089] In some embodiments, the first orthographic projection T11, the second orthographic projection T12, the third orthographic projection T13, and the fourth orthographic projection T14 are configured to be oriented in the same circumferential direction along the axis O1 of the filling head 1 (or the longitudinal axis O2 of the packaging). Figure 5 As shown, the first orthographic projection T11, the second orthographic projection T12, the third orthographic projection T13, and the fourth orthographic projection T14 are oriented substantially in a clockwise direction. This arrangement avoids collisions between the four liquid streams ejected from the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14. Furthermore, it facilitates the formation of vortices or eddies, causing surrounding liquids (such as those later filled into the packaging) to flow in the same direction, thereby further reducing liquid splashing.

[0090] In some embodiments, the fourth extension line L14 of the fourth orthographic projection T14 may be parallel to or not parallel to the second extension line L12 of the second orthographic projection T12. For example, as Figure 5 As shown, the fourth extension line L14 and the second extension line L12 are parallel to each other and are spaced apart in a direction parallel to the XY plane (e.g., in the Y direction shown in the figure).

[0091] If the fourth extension line L14 and the second extension line L12 are parallel to each other but without any gap (i.e., they are on the same straight line), then the reflected streams of the two liquid streams will collide head-on.

[0092] In this embodiment, since the fourth extension line L14 and the second extension line L12 are parallel to each other and there is a certain distance between them, the fourth orthographic projection TF14 and the second orthographic projection TF12 can be avoided to be on the same straight line, thereby preventing the two reflected liquid streams corresponding to the two liquid streams ejected from the fourth outlet 14 and the second outlet 13 from colliding head-on, and further avoiding the formation of liquid splashes or foam in the packaging 2.

[0093] The above embodiments only show the case where the fourth extension line L14 intersects with the first extension line L11 and the third extension line L13 respectively. It is understood that in other embodiments, when the fourth extension line L14 and the second extension line L12 are not parallel to each other, the fourth extension line L14 can intersect with the first extension line L11, the second extension line L12 and the third extension line L13 simultaneously. In this case, it can also achieve the effect of forming vortices to reduce splashing.

[0094] For example, such as Figure 5 As shown, the fourth outlet 14 is configured so that the liquid ejected along the fourth ejection direction R14 collides with the fourth sidewall S4. That is, the first orthographic projection T11, the second orthographic projection T12, the third orthographic projection T13, and the fourth orthographic projection T14 are respectively oriented towards four different sidewalls in the packaging 2 (i.e., the first sidewall S1, the second sidewall S2, the third sidewall S3, and the fourth sidewall S4). This makes it more advantageous for the four liquid streams ejected from the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14 to collide with the four different sidewalls and then... Figure 5 The clockwise flow shown creates a swirling flow, further preventing liquid splashing or foaming during filling.

[0095] In this embodiment of the disclosure, only one third outlet may be provided, or multiple third outlets may be provided (e.g., third outlet 13 and seventh outlet 13a), and this embodiment of the disclosure does not limit this. Similarly, only one fourth outlet may be provided, or multiple fourth outlets may be provided (e.g., fourth outlet 14 and eighth outlet 14a), and this embodiment of the disclosure does not limit this. By providing third outlet 13 and seventh outlet 13a, and fourth outlet 14 and eighth outlet 14a, the liquid filling volume per unit time can be increased.

[0096] In this embodiment of the disclosure, when there are multiple of each of the first, second, third, and fourth outlets, the number of multiple first outlets, second outlets, third outlets, and fourth outlets can be the same or different. When the number of multiple first outlets, second outlets, third outlets, and fourth outlets is the same, the amount of liquid ejected along different liquid discharge directions can be the same, thereby ensuring a more uniform distribution of liquid impact force on each sidewall of the packaging, thus avoiding splashing or bubbling due to excessive impact force in some areas.

[0097] In this embodiment of the disclosure, the first liquid outlet direction R11 has a first tilt angle with the axis O1, the second liquid outlet direction R12 has a second tilt angle with the axis O1, the third liquid outlet direction R13 has a third tilt angle with the axis O1, and the fourth liquid outlet direction R14 has a fourth tilt angle with the axis O1. For example, as... Figure 3 and Figure 4 As shown, the first tilt angle between the first liquid outlet direction R11 and the axis O1 is a1, the second tilt angle between the second liquid outlet direction R12 and the axis O1 is a2, and the third tilt angle between the third liquid outlet direction R13 and the axis O1 is a3.

[0098] In some embodiments, the first tilt angle, the second tilt angle, the third tilt angle, and the fourth tilt angle may be equal to each other or unequal to each other. When they are equal to each other, the liquid streams ejected along different liquid outlet directions can collide with the side wall of the packaging at a point that is basically on the same horizontal plane. This allows the reflected streams to bounce off the side wall at a point that is basically on the same horizontal plane and form a reflected stream. This makes the distance from the reflected streams to the bottom surface of the packaging approximately the same and the impact force borne by the packaging approximately the same, which is more conducive to the formation of a swirling flow.

[0099] For example, such as Figure 4 As shown, taking the first outlet 11 and the third outlet 13 as examples, when the first tilt angle is a1 and the third tilt angle is a3, the collision position of the liquid flow ejected along the first liquid outlet direction R11 with the packaging 2 and the collision position of the liquid flow ejected along the third liquid outlet direction R13 with the packaging 2 are basically on the same horizontal plane P.

[0100] For example, such as Figure 4 As shown, the horizontal plane P is located below the indentation line 202 used to seal the opening 201, thereby ensuring that the liquid flow does not fall above the indentation line 202, thus avoiding affecting the sealing effect.

[0101] For example, such as Figure 1 As shown, the first outlet 11, the second outlet 12, the third outlet 13 and the fourth outlet 14 are distributed around the axis O1 in the circumferential direction.

[0102] Assume the filling head has an even number of outlets, such as eight outlets, arranged in parallel rows, such as two rows, with four outlets in each row. In a plane perpendicular to the axis of the filling head (e.g., the plane containing the outlet areas), the two rows of outlets are mirror-symmetrical about the center line between them, and the two rows of outlets face opposite sidewalls of the package (e.g.,...). Figure 5 The second sidewall S2 and the fourth sidewall S4 are sprayed. After being deflected by the two opposing sidewalls, the reflected streams are very likely to collide head-on (meet at the bottom), causing liquid splashing.

[0103] In this embodiment of the disclosure, by setting the first outlet 11, the second outlet 12, the third outlet 13 and the fourth outlet 14 to be distributed in the circumferential direction around the axis O1, it is beneficial for the four liquid streams ejected from the first outlet 11, the second outlet 12, the third outlet 13 and the fourth outlet 14 to form a vortex or eddy, thereby driving the nearby liquid to flow in the same direction, which not only avoids head-on collisions, but also further reduces liquid splashing.

[0104] Figure 6 This is a schematic diagram of the orthographic projection of four liquid discharge directions of another filling head provided in an embodiment of this disclosure. (See diagram below.) Figure 6 As shown, there is a first included angle b1 between the first orthographic projection T11 and the first sidewall S1, a second included angle b2 between the second orthographic projection T12 and the second sidewall S2, a third included angle b3 between the third orthographic projection T13 and the third sidewall S3, and a fourth included angle b4 between the fourth orthographic projection T14 and the fourth sidewall S4. The first included angle b1, the second included angle b2, the third included angle b3, and the fourth included angle b4 may be equal to each other or may not be equal to each other.

[0105] For example, such as Figure 6 As shown, the first included angle b1, the second included angle b2, the third included angle b3, and the fourth included angle b4 are all equal. This configuration ensures that the four liquid streams have the same incident angle towards the sidewall, and consequently, that the four reflected streams also have the same reflection angle from the sidewall, thus better controlling the final clockwise flow of the liquids incident from each direction.

[0106] In some embodiments, the first included angle b1, the second included angle b2, the third included angle b3, and the fourth included angle b4 are all acute angles, for example, greater than zero degrees and less than or equal to 90°. Compared to the case where each included angle is equal to 90° (i.e., perpendicularly incident on the sidewall), the above arrangement allows the liquid stream ejected from each outlet to be obliquely incident on the sidewall in the XY plane, thereby reducing the impact force on the sidewall and making it easier to flow clockwise within the packaging 2.

[0107] In some embodiments, two adjacent sidewalls of the first sidewall S1, second sidewall S2, third sidewall S3 and fourth sidewall S4 are connected to each other; liquid collides with the wall to form a collision zone, which is not located at the junction of two adjacent sidewalls.

[0108] For example, in the first sidewall S1, the second sidewall S2, the third sidewall S3, and the fourth sidewall S4, there is a connection between every two adjacent sidewalls, for example... Figure 6 The corner region 203 is shown in the diagram. Package 2 contains four corner regions 203. Liquids ejected from the first outlet 11, second outlet 12, third outlet 13, and fourth outlet 14 form a first collision zone Q11, a second collision zone Q12, a third collision zone Q13, and a fourth collision zone Q14 with the first sidewall S1, the second sidewall S2, the third sidewall S3, and the fourth sidewall S4, respectively. None of these four collision zones are located in any corner region 203; that is, these four collision zones do not overlap with the corner region 203.

[0109] Since corner area 203 is located at the corner of packaging 2, if liquid collides with corner area 203, the liquid will instantly change its flow direction due to the obstruction of the two vertical sidewalls within the corner area, resulting in uncontrollable splashing or foaming. By avoiding the corner area, uncontrollable changes in flow direction can be avoided, thus ensuring that the liquid ultimately flows in a clockwise direction.

[0110] For example, such as Figure 4 As shown, the package 1 includes a bottom surface, which is connected to the wall to form a bottom connection area 204. Liquid sprayed into the package from any outlet is configured to avoid the bottom connection area 204, i.e., any one of the first collision area Q11, the second collision area Q12, the third collision area Q13 and the fourth collision area Q14 does not overlap with the bottom connection area 204.

[0111] Since the bottom connecting area 204 is inclined, if the liquid collides with the bottom connecting area 204, its flow direction will change instantly. Therefore, in this embodiment of the present disclosure, by preventing the liquid from colliding with the bottom connecting area 204, uncontrollable changes in flow direction are avoided, thereby ensuring that the liquid ultimately flows in a clockwise direction.

[0112] For example, such as Figure 6 As shown, the first collision zone Q11, the second collision zone Q12, the third collision zone Q13, and the fourth collision zone Q14 are centrally symmetrical with respect to the longitudinal axis O2 of the packaging 2. This ensures that the four collision zones are positioned approximately the same relative to the longitudinal axis O2, which is more conducive to ensuring that the impact forces borne by each sidewall are in roughly the same direction, and thus facilitates the final clockwise flow of the four reflected streams.

[0113] For example, such as Figure 5As shown, in the XY plane, the first collision zone Q11, the second collision zone Q12, the third collision zone Q13, and the fourth collision zone Q14 are located on one side of the centerline of the first sidewall S1, the second sidewall S2, the third sidewall S3, and the fourth sidewall S4, respectively; or, the first collision zone Q11, the second collision zone Q12, the third collision zone Q13, and the fourth collision zone Q14 are located in the middle area of ​​the first sidewall S1, the second sidewall S2, the third sidewall S3, and the fourth sidewall S4, respectively. This arrangement avoids the corner areas of the packaging, prevents uncontrollable changes in the liquid flow direction, and ensures that the liquid ultimately flows in a clockwise direction.

[0114] For example, such as Figure 1 As shown, the inlet area 20 includes eight inlets: the first inlet 21, the second inlet 22, the third inlet 23, the fourth inlet 24, the fifth inlet 21a, the sixth inlet 22a, the seventh inlet 23a, and the eighth inlet 24a. Each inlet is connected to an outlet. For example, the first inlet 21 is in liquid communication with the first outlet 11, the second inlet 22 is in liquid communication with the second outlet 12, the third inlet 23 is in liquid communication with the third outlet 13, the fourth inlet 24 is in liquid communication with the fourth outlet 14, and so on.

[0115] Figure 7 for Figure 1 A schematic diagram of the structure of the inlet area of ​​the filling head.

[0116] For example, such as Figure 7 As shown, the first inlet 21, the second inlet 22, the third inlet 23, and the fourth inlet 24 are distributed circumferentially around the axis O1 of the filling head 1. In some embodiments, the first inlet 21, the second inlet 22, the third inlet 23, and the fourth inlet 24 are at the same distance from the axis O1.

[0117] In this embodiment, the inlet configuration can be referenced to the outlet configuration. Assume the filling head includes an even number of inlets, such as eight, arranged in parallel rows, such as two rows, with four inlets per row. In a plane perpendicular to the axis of the filling head (e.g., the plane containing the inlet area), the two rows of inlets are mirror-symmetrical about the center line between them. The above configuration is no longer suitable for the filling head in this embodiment.

[0118] In order to reduce the flow distance of liquid between the inlet and outlet and reduce the manufacturing difficulty of the channel connecting the inlet and outlet, the embodiments of this disclosure also design the first inlet 21, the second inlet 22, the third inlet 23 and the fourth inlet 24 to be distributed in the circumferential direction around the axis O1 of the filling head 1.

[0119] The above-described embodiments of this disclosure use a filling head with eight outlets as an example. It is understood that the number of outlets shown in the figures is merely illustrative, and those skilled in the art can change or adjust the number of outlets according to actual needs. This disclosure does not limit this. Correspondingly, the number of inlets is also merely illustrative and can be changed or adjusted according to the number of outlets.

[0120] For example, such as Figure 1 As shown, the filling head 1 also includes a channel assembly 30 connecting the inlet region 20 and the outlet region 10. The channel assembly 30 includes multiple channels, which are arranged one-to-one with multiple inlets and multiple outlets to guide liquid from the inlet to the corresponding outlet. For example, the multiple channels include a first channel 31, which connects the first inlet 21 and the first outlet 11.

[0121] For example, the first channel 31 includes a first tubular portion 311 and a second tubular portion 312 connected to the first tubular portion 311, wherein in the longitudinal direction (e.g., the Z direction), the first tubular portion 311 is closer to the outlet region 20, and the second tubular portion 312 is farther from the outlet region 20. A first outlet 11 is located at the end of the first tubular portion 311 that is farther from the second tubular portion 312, and a second inlet 21 is located at the end of the second tubular portion 312 that is farther from the first tubular portion 311.

[0122] For example, the first tubular portion 311 is configured to be inclined relative to the axis O1, so that the first liquid discharge direction R11 of the first outlet 11 is inclined relative to the axis O1. The second tubular portion 312 is configured to be parallel to the axis O1, that is, to extend along the Z direction.

[0123] Figure 8 A perspective view of another filling head provided in an embodiment of this disclosure; Figure 9 for Figure 8 A schematic diagram of the structure of the outlet area of ​​the filling head.

[0124] Figure 8 and Figure 1 The difference is that, Figure 8 Export zone 10 includes six exports, such as Figure 8 and Figure 9 As shown, the outlets are the first outlet 11, the second outlet 12, the third outlet 13, the fifth outlet 11a, the sixth outlet 12a, and the seventh outlet 13a. Among the six outlets, the first outlet 11 and the fifth outlet 11a have the same liquid discharge direction (e.g., the first liquid discharge direction R11 shown in the figure), the second outlet 12 and the sixth outlet 12a have the same liquid discharge direction (e.g., the second liquid discharge direction R12 shown in the figure), and the third outlet 13 and the seventh outlet 13a have the same liquid discharge direction (e.g., the third liquid discharge direction R13 shown in the figure).

[0125] By setting the first liquid outlet direction R11, the second liquid outlet direction R12, and the third liquid outlet direction R13 to be different from each other, the liquid can be sprayed into the packaging in different directions, thereby forming different impact positions. In this way, when the liquid flow at different impact positions is bounced or reflected by the wall, the reflected liquid flow can also avoid head-on collision, thereby reducing liquid splashing or foam caused by head-on collision.

[0126] For example, such as Figure 8 As shown, the inlet area 20 includes six inlets: the first inlet 21, the second inlet 22, the third inlet 23, the fifth inlet 21a, the sixth inlet 22a, and the seventh inlet 23a. Each inlet is connected to an outlet. For example, the first inlet 21 is in liquid communication with the first outlet 11, the second inlet 22 is in liquid communication with the second outlet 12, and the third inlet 23 is in liquid communication with the third outlet 13.

[0127] For example, such as Figure 9 As shown, the first outlet 11, the second outlet 12, and the third outlet 13 are arranged circumferentially around the axis O1 of the filling head 1. This facilitates the formation of a swirling flow from the three liquid streams ejected from the first outlet 11, the second outlet 12, and the third outlet 13, thereby driving the nearby liquid to flow in the same direction and further reducing liquid splashing.

[0128] For example, such as Figure 8 As shown, the first inlet 21, the second inlet 22, and the third inlet 23 are arranged circumferentially around the axis O1 of the filling head 1. This reduces the liquid flow distance between the inlet and outlet and lowers the manufacturing difficulty of the channel connecting the inlet and outlet.

[0129] Figure 8 and Figure 9 The configuration of the first outlet 11, the second outlet 12, and the third outlet 13 can be referred to the relevant description in the previous embodiments, and will not be repeated here.

[0130] The following are several other implementations of the filling head provided in the embodiments of this disclosure. For specific structures and technical effects, please refer to the descriptions in the previous embodiments, which will not be repeated here.

[0131] In some embodiments, the outlet area 10 may include only four outlets, and the four outlets have four different liquid discharge directions. For example, the four outlets may be one of the first outlet 11 and the fifth outlet 11a, one of the second outlet 12 and the sixth outlet 1201, one of the third outlet 13 and the seventh outlet 13a, and one of the fourth outlet 14 and the eighth outlet 14a. This arrangement avoids head-on collisions between multiple liquid streams reflected from the packaging sidewalls, thereby reducing liquid splashing or foam formation, improving filling quality, and preventing contamination of the filling equipment.

[0132] Furthermore, in some embodiments, the distances from the four outlets with four different liquid discharge directions to the axis O1 of the filling head 1 are approximately the same. For example, the four outlets are the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14, or the four outlets are the fifth outlet 11a, the sixth outlet 1201, the seventh outlet 13a, and the eighth outlet 14a.

[0133] In this embodiment, the fifth outlet 11a is farther from the axis O1 of the filling head 1 than the first outlet 11. Similarly, the sixth outlet 12a is farther from the axis O1 of the filling head 1 than the second outlet 12, the seventh outlet 13a is farther from the axis O1 of the filling head 1 than the third outlet 13, and the eighth outlet 14a is farther from the axis O1 of the filling head 1 than the fourth outlet 14. The distances from the first outlet 11, second outlet 12, third outlet 13, and fourth outlet 14 to the axis O1 of the filling head 1 are approximately the same, as are the distances from the fifth outlet 11a, sixth outlet 12a, seventh outlet 13a, and eighth outlet 14a to the axis O1 of the filling head 1. Thus, when liquid impacts the packaging wall from four different directions, the impact force on the packaging is more evenly distributed because the liquid spray distance is approximately the same, thereby helping to avoid liquid splashing or foaming inside the packaging.

[0134] In some embodiments, the outlet area 10 may include only three outlets, and these three outlets have three different liquid discharge directions. For example, the three outlets may be any three of the following: first outlet 11, second outlet 12, third outlet 13, and fourth outlet 14; or any three of the following: fifth outlet 11a, sixth outlet 12a, seventh outlet 13a, and eighth outlet 14a. This arrangement avoids head-on collisions between multiple liquid streams reflected from the packaging sidewalls, thereby reducing liquid splashing or foam formation, improving filling quality, and preventing contamination of the filling equipment.

[0135] Furthermore, in some embodiments, the distances from the three outlets with three different liquid discharge directions to the axis O1 of the filling head 1 are approximately the same. For example, the three outlets are the first outlet 11, the second outlet 12, and the third outlet 13 (or the fourth outlet 14), or the three outlets are the fifth outlet 11a, the sixth outlet 1201, and the seventh outlet 13a (or the eighth outlet 14a). Since the distances from the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14 to the axis O1 of the filling head 1 are approximately the same, and the distances from the fifth outlet 11a, the sixth outlet 1201, the seventh outlet 13a, and the eighth outlet 14a to the axis O1 of the filling head 1 are also approximately the same, when the liquid impacts the wall of the packaging from three different directions, the impact force borne by the packaging is more evenly distributed due to the approximately the same liquid spray distance, thereby helping to avoid liquid splashing or foaming inside the packaging.

[0136] In some embodiments, the outlet area 10 may include only two outlets, and the two outlets have two different liquid discharge directions. For example, the two outlets may be any two of the following: first outlet 11, second outlet 12, third outlet 13, and fourth outlet 14; or any two of the following: fifth outlet 11a, sixth outlet 12a, seventh outlet 13a, and eighth outlet 14a. This arrangement avoids head-on collisions between multiple liquid streams reflected from the packaging sidewalls, thereby reducing liquid splashing or foam formation, improving filling quality, and preventing contamination of the filling equipment.

[0137] This disclosure also provides a filling apparatus, including the filling head described in any of the preceding embodiments.

[0138] In the filling apparatus provided in the above embodiments, the filling head has the structure and technical effects described in the previous embodiments. Therefore, the same technical effects of the filling apparatus will not be repeated here.

[0139] This disclosure also provides a filling method for filling liquid into packaging.

[0140] Figure 10 This is a schematic flowchart illustrating the filling method provided in an embodiment of this disclosure. For example, as... Figure 10 As shown, the filling method provided in this embodiment includes:

[0141] S100: Liquid is ejected along a first discharge direction, the first discharge direction being inclined relative to the longitudinal axis of the packaging and having a first orthographic projection on a plane perpendicular to the longitudinal axis.

[0142] S200: Liquid is ejected along a second liquid ejection direction, which is different from the first liquid ejection direction. The second liquid ejection direction is inclined relative to the longitudinal axis and has a second orthographic projection on a plane. The first orthographic projection and the second orthographic projection do not overlap each other, and the extension lines of the first orthographic projection and the second orthographic projection intersect each other.

[0143] In the filling method provided in the above embodiments, by making the first orthographic projection of the first liquid outlet direction and the second orthographic projection of the second liquid outlet direction not overlap each other and making the extension lines of the first orthographic projection and the extension lines of the second orthographic projection intersect each other, the two liquid streams ejected from the first outlet and the second outlet and reflected by the packaging sidewall can be prevented from colliding head-on, thereby reducing liquid splashing or foam formation, improving filling quality, and avoiding contamination of the filling equipment.

[0144] For example, the above filling method is implemented using a filling head described in any of the preceding embodiments. The filling method provided in this disclosure includes:

[0145] S1: As Figure 1 and Figure 5 As shown, liquid is ejected along the first liquid ejection direction R11, which is inclined relative to the longitudinal axis O2 of the package 2 and has a first orthographic projection T11 on the XY plane perpendicular to the longitudinal axis O2.

[0146] S2: As Figure 1 and Figure 5 As shown, liquid is ejected along the second liquid ejection direction R12, which is different from the first liquid ejection direction R11. The second liquid ejection direction R12 is inclined relative to the longitudinal axis O2 and has a second orthographic projection T12 on the XY plane. The first orthographic projection T11 and the second orthographic projection T12 do not overlap each other, and the extension line of the first orthographic projection T11 (i.e., the first extension line L11) and the extension line of the second orthographic projection T12 (i.e., the second extension line L12) intersect each other.

[0147] In this embodiment of the present disclosure, by setting the first orthographic projection T11 of the first liquid discharge direction R11 and the second orthographic projection T12 of the second liquid discharge direction R12 to not overlap with each other and making the first extension line L11 of the first orthographic projection T11 and the second extension line L12 of the second orthographic projection T12 intersect each other, the first orthographic projection TF11 and the second orthographic projection TF12 are prevented from being on the same straight line, thereby preventing the two reflective liquid streams from colliding head-on and avoiding the formation of liquid splashes or foam in the packaging 2.

[0148] In some embodiments, the filling method described above further includes:

[0149] S3: As Figure 1 , Figure 3 and Figure 5 As shown, liquid is ejected along the third liquid ejection direction R13, which is different from both the first liquid ejection direction R11 and the second liquid ejection direction R12. The third liquid ejection direction R13 is inclined relative to the longitudinal axis O2 and has a third orthographic projection T13 on the XY plane. The third orthographic projection T13 does not overlap with the first orthographic projection T11 and the second orthographic projection T12, and the extension line of at least one of the first orthographic projections T11 and T12 intersects with the extension line of the third orthographic projection T13 (i.e., the third extension line L13).

[0150] In this embodiment of the present disclosure, by intersecting the third extension line L13 of the third orthographic projection T13 and the second extension line L12 of the second orthographic projection T12, the third orthographic projection TF13 and the second orthographic projection TF12 are prevented from being on the same straight line, thereby preventing the two reflective liquid streams from colliding head-on and avoiding the formation of liquid splashes or foams in the packaging 2.

[0151] In some embodiments, the filling method described above further includes:

[0152] S4: As Figure 1 and Figure 5 As shown, liquid is ejected along the fourth liquid ejection direction R14, which is different from the first liquid ejection direction R11, the second liquid ejection direction R12, and the third liquid ejection direction R13. The fourth liquid ejection direction R14 is inclined relative to the longitudinal axis O2 and has a fourth orthographic projection T14 on the XY plane. The fourth orthographic projection T14 does not overlap with the first orthographic projection T11, the second orthographic projection T12, and the third orthographic projection T13. Furthermore, the extension lines of at least two of the first orthographic projections T11, the second orthographic projection T12, and the third orthographic projection T13 intersect with the extension line of the fourth orthographic projection (i.e., the fourth extension line L14).

[0153] In this embodiment of the present disclosure, by setting the fourth extension line L14 to intersect with the first extension line L11 and the third extension line L13, it is possible to avoid the fourth orthographic projection TF14 and the first orthographic projection TF11 being on the same straight line, and also to avoid the fourth orthographic projection TF14 and the third orthographic projection TF13 being on the same straight line. This prevents the two reflected liquid streams corresponding to the two liquid streams ejected from the first outlet 11 and the fourth outlet 14 from colliding head-on, and also prevents the two reflected liquid streams corresponding to the two liquid streams ejected from the third outlet 13 and the fourth outlet 14 from colliding head-on, thereby avoiding the formation of liquid splashes or foams inside the packaging 2.

[0154] In some embodiments, such as Figure 4 and Figure 5 As shown, the packaging 2 includes an opening 201 and a wall surrounding the opening 201. The wall includes a first side wall S1, a second side wall S2, a third side wall S3, and a fourth side wall S4. The first side wall S1 and the third side wall S3 are opposite to each other in a first direction (e.g., the X direction shown in the figure), and the second side wall S2 and the fourth side wall S4 are opposite to each other in a second direction (e.g., the Y direction shown in the figure). The first direction and the second direction are perpendicular to each other and both are parallel to the XY plane. The filling method includes: liquid ejected along the first liquid outlet direction R11 colliding with the first side wall S1; liquid ejected along the second liquid outlet direction R12 colliding with the second side wall S2; liquid ejected along the third liquid outlet direction R13 colliding with the third side wall S3; and liquid ejected along the fourth liquid outlet direction R14 colliding with the fourth side wall S4.

[0155] In this embodiment of the disclosure, by causing the liquid to collide with four different side walls (i.e., the first side wall S1, the second side wall S2, the third side wall S3, and the fourth side wall S4) of the packaging 2 respectively, it is more beneficial for the four streams of liquid ejected from the first outlet 11, the second outlet 12, the third outlet 13, and the fourth outlet 14 to travel along the four different side walls after colliding with them. Figure 5The clockwise flow shown creates a swirling flow, further preventing liquid splashing or foaming during filling. Specifically, after colliding with the first sidewall S1, the second sidewall S2, the third sidewall S3, and the fourth sidewall S4, the liquid flows circumferentially around the longitudinal axis O2.

[0156] In the filling head, filling device, and filling method provided in the above-disclosed embodiments, by ensuring that the first orthographic projection of the first liquid outlet direction and the second orthographic projection of the second liquid outlet direction do not overlap and that the extension lines of the first orthographic projection and the extension lines of the second orthographic projection intersect each other, it is possible to avoid the two liquid streams ejected from the first outlet and the second outlet and reflected by the packaging sidewall from colliding head-on, thereby reducing liquid splashing or foam formation, improving filling quality, and avoiding contamination of the filling equipment.

[0157] The following points should be noted in this article:

[0158] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0159] (2) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0160] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A filling head for filling liquids and having an axis, the filling head including an outlet region configured to allow the liquid to flow out, the outlet region including: The first outlet is configured to eject the liquid along a first liquid discharge direction, the first liquid discharge direction being inclined relative to the axis and having a first orthographic projection on a plane perpendicular to the axis. The second outlet is configured to eject the liquid along a second liquid discharge direction, which is different from the first liquid discharge direction. The second liquid discharge direction is inclined relative to the axis and has a second orthographic projection on the plane. The first orthographic projection and the second orthographic projection do not overlap each other, and the extension lines of the first orthographic projection and the second orthographic projection intersect each other. The third outlet is configured to eject the liquid along a third liquid outlet direction, which is different from both the first and second liquid outlet directions. The first outlet, the second outlet, and the third outlet are distributed circumferentially around the axis. The filling head is configured to fill a package with liquid. The package includes an opening and a wall surrounding the opening. The liquid is filled into the package through the opening. The wall includes a first side wall, a second side wall, a third side wall, and a fourth side wall. The liquid collides with the first side wall, the second side wall, the third side wall, and the fourth side wall to form a first collision area, a second collision area, a third collision area, and a fourth collision area, respectively. Each pair of adjacent sidewalls has a corner region, and the corner region does not overlap with the first collision region, the second collision region, the third collision region, and the fourth collision region. The packaging also includes a bottom surface, which is connected to the wall to form a bottom connection area, and the bottom connection area does not overlap with the first collision area, the second collision area, the third collision area and the fourth collision area.

2. The filling head according to claim 1, wherein, The third discharge direction is inclined relative to the axis and has a third orthogonal projection on the plane; The third orthographic projection does not overlap with either the first orthographic projection or the second orthographic projection, and the extension line of at least one of the first orthographic projections intersects with the extension line of the third orthographic projection.

3. The filling head according to claim 2, wherein, The extension line of the third orthographic projection intersects with the extension line of the second orthographic projection.

4. The filling head according to claim 2, wherein, The export area also includes: The fourth outlet is configured to eject the liquid along a fourth liquid ejection direction, which is different from the first liquid ejection direction, the second liquid ejection direction and the third liquid ejection direction. The fourth liquid ejection direction is inclined relative to the axis and has a fourth orthographic projection on the plane. The fourth orthographic projection does not overlap with the first, second, and third orthographic projections, and the extension lines of at least two of the first, second, and third orthographic projections intersect with the extension line of the fourth orthographic projection.

5. The filling head according to claim 4, wherein, The extension line of the fourth orthographic projection intersects the extension lines of the first orthographic projection and the third orthographic projection, respectively.

6. The filling head according to claim 4, wherein, The first liquid outlet direction has a first tilt angle with the axis; The second liquid outlet direction has a second tilt angle with respect to the axis; The third liquid outlet direction has a third tilt angle with the axis; The fourth liquid outlet direction has a fourth tilt angle with the axis; The first tilt angle, the second tilt angle, the third tilt angle, and the fourth tilt angle are all equal to each other.

7. The filling head according to claim 4, wherein, The first outlet, the second outlet, the third outlet, and the fourth outlet are distributed circumferentially around the axis.

8. The filling head according to claim 4, wherein, The number of each of the first outlet, the second outlet, the third outlet, and the fourth outlet is multiple.

9. The filling head according to claim 4, wherein, The number of the first outlet, the second outlet, the third outlet, and the fourth outlet are the same.

10. The filling head according to claim 1, in, The first sidewall and the third sidewall are opposite to each other in a first direction, and the second sidewall and the fourth sidewall are opposite to each other in a second direction. The first direction and the second direction are perpendicular to each other and both are parallel to the plane. The first outlet is configured to cause the liquid ejected along the first ejection direction to collide with the first sidewall, and the second outlet is configured to cause the liquid ejected along the second ejection direction to collide with the second sidewall.

11. The filling head according to claim 10, wherein, The packaging has a longitudinal axis, and the liquid that has collided with the first sidewall and the second sidewall flows circumferentially within the packaging around the longitudinal axis.

12. The filling head according to claim 10, wherein, The third discharge direction is inclined relative to the axis and has a third orthogonal projection on the plane; The third outlet is configured such that the liquid ejected along the third liquid outlet direction collides with the third sidewall.

13. The filling head according to claim 12, in, The export area also includes: The fourth outlet is configured to eject the liquid along a fourth liquid ejection direction, which is different from the first liquid ejection direction, the second liquid ejection direction and the third liquid ejection direction. The fourth liquid ejection direction is inclined relative to the axis and has a fourth orthographic projection on the plane. The fourth outlet is configured such that the liquid ejected along the fourth liquid outlet direction collides with the fourth sidewall.

14. The filling head according to claim 13, wherein, There is a first included angle between the first orthographic projection and the first sidewall; There is a second included angle between the second orthographic projection and the second sidewall; There is a third included angle between the third orthographic projection and the third sidewall; There is a fourth included angle between the fourth orthographic projection and the fourth sidewall. Among them, the first included angle, the second included angle, the third included angle, and the fourth included angle are equal to each other.

15. The filling head according to claim 14, wherein, The first included angle, the second included angle, the third included angle, and the fourth included angle are all acute angles.

16. The filling head according to claim 10, in, Two adjacent sidewalls among the first, second, third, and fourth sidewalls are connected to each other; the liquid collides with the wall to form a collision zone, which is not located at the junction of the two adjacent sidewalls.

17. The filling head according to claim 16, wherein, The first collision zone, the second collision zone, the third collision zone, and the fourth collision zone are centrally symmetrical with respect to the longitudinal axis of the packaging.

18. The filling head according to claim 1, in, The filling head further includes: an inlet region configured to allow the liquid to flow in and opposite to the outlet region on the axis, the inlet region comprising: The first inlet is configured to communicate with the first liquid outlet. The second inlet is configured to communicate with the second liquid outlet. The third inlet is configured to communicate with the liquid at the third outlet. The first inlet, the second inlet, and the third inlet are distributed circumferentially around the axis.

19. The filling head according to claim 18, in, The export area also includes: The fourth outlet is configured to eject the liquid in a fourth liquid discharge direction; The entrance area includes: The fourth inlet is configured to communicate with the fourth liquid outlet; The first inlet, the second inlet, the third inlet, and the fourth inlet are distributed circumferentially around the axis.

20. A filling apparatus comprising the filling head as described in any one of claims 1 to 19.

21. A filling method for a filling head according to claim 1, used for filling liquid into a package, the filling method comprising: The liquid is ejected along a first discharge direction, which is inclined relative to the longitudinal axis of the package and has a first orthographic projection on a plane perpendicular to the longitudinal axis. The liquid is ejected along a second liquid ejection direction, which is different from the first liquid ejection direction. The second liquid ejection direction is inclined relative to the longitudinal axis and has a second orthographic projection on the plane. The first orthographic projection and the second orthographic projection do not overlap each other, and the extension lines of the first orthographic projection and the second orthographic projection intersect each other.

22. The filling method according to claim 21, further comprising: The liquid is ejected along a third liquid ejection direction, which is different from both the first and second liquid ejection directions. The third liquid ejection direction is inclined relative to the longitudinal axis and has a third orthographic projection on the plane. The third orthographic projection does not overlap with either the first orthographic projection or the second orthographic projection, and the extension line of at least one of the first orthographic projections intersects with the extension line of the third orthographic projection.

23. The filling method according to claim 22, further comprising: The liquid is ejected along a fourth liquid ejection direction, which is different from the first liquid ejection direction, the second liquid ejection direction and the third liquid ejection direction. The fourth liquid ejection direction is inclined relative to the longitudinal axis and has a fourth orthographic projection on the plane. The fourth orthographic projection does not overlap with the first, second, and third orthographic projections, and the extension lines of at least two of the first, second, and third orthographic projections intersect with the extension line of the fourth orthographic projection.

24. The filling method according to claim 23, in, The package includes an opening and walls surrounding the opening, the walls including a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the first sidewall and the third sidewall being opposite each other in a first direction, the second sidewall and the fourth sidewall being opposite each other in a second direction, the first direction and the second direction being perpendicular to each other and both parallel to the plane.

25. The filling method according to claim 24, wherein, The filling method includes: The liquid ejected along the first liquid outlet direction collides with the first sidewall; The liquid ejected along the second discharge direction collides with the second sidewall; The liquid ejected along the third discharge direction collides with the third sidewall; The liquid ejected along the fourth liquid outlet direction collides with the fourth sidewall; Upon colliding with the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall, the liquid flows circumferentially around the longitudinal axis.

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