WO2023193776A1 - 灌装头及其灌装装置和灌装方法 - Google Patents

灌装头及其灌装装置和灌装方法 Download PDF

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Publication number
WO2023193776A1
WO2023193776A1 PCT/CN2023/086753 CN2023086753W WO2023193776A1 WO 2023193776 A1 WO2023193776 A1 WO 2023193776A1 CN 2023086753 W CN2023086753 W CN 2023086753W WO 2023193776 A1 WO2023193776 A1 WO 2023193776A1
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WO
WIPO (PCT)
Prior art keywords
outlet
filling
longitudinal axis
filling head
conduit
Prior art date
Application number
PCT/CN2023/086753
Other languages
English (en)
French (fr)
Inventor
朱孟兵
李雪
周彩明
Original Assignee
康美包服务股份公司
康美包（苏州）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 康美包服务股份公司, 康美包（苏州）有限公司 filed Critical 康美包服务股份公司
Publication of WO2023193776A1 publication Critical patent/WO2023193776A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/22—Defoaming liquids in connection with filling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof

Definitions

  • Embodiments of the present disclosure relate to a filling head, its filling device and filling method.
  • the filling device may be used to fill liquid products into packages, for example the liquid product may be a food product such as milk, juice, slurry or yogurt.
  • the liquid product may be a food product such as milk, juice, slurry or yogurt.
  • the fast filling speed due to the fast filling speed, liquid splashes or bubbles are easily formed in the packaging, which affects the sealing of the packaging or contaminates the filling device.
  • Embodiments of the present disclosure provide a filling head, its filling device and filling method.
  • a filling head for filling fluid, the filling head having a longitudinal axis and including an inlet region and an outlet region along the longitudinal axis, the inlet region being configured such that the The fluid flows in, and the outlet area is configured to allow the fluid to exit;
  • the filling head further includes: a channel assembly connecting the inlet area and the outlet area and configured to convey the fluid from the inlet area to the outlet area, the channel assembly has two outlets disposed in the outlet area, the fluid is ejected from the two outlets through the channel assembly, and the channel assembly is curved so that the two outlets The two liquid outlet directions are divergent; wherein the angles between the two liquid outlet directions and the longitudinal axis are different, and/or the lateral spacing between the two outlets and the longitudinal axis is different.
  • the two outlets include a first outlet and a second outlet;
  • the channel assembly includes a first conduit and a second conduit;
  • the first conduit includes a first bend connected to the first outlet. part, the central axis of the first bending part is inclined relative to the longitudinal axis at a first inclination angle.
  • the second conduit includes a second curved portion connected to the second outlet, the central axis of the second curved portion is tilted relative to the longitudinal axis at a second tilt angle; wherein the first tilt angle It is different from the second tilt angle.
  • the first tilt angle ranges from 15 degrees to 25 degrees; the second tilt angle ranges from 15 degrees to 25 degrees; the first tilt angle and the third tilt angle range The difference between the two tilt angles ranges from 2 degrees to 5 degrees.
  • the filling head further includes an end surface perpendicular to the longitudinal axis, and the first outlet and the second outlet are located on the end surface; the first outlet and the second outlet A first transverse direction parallel to the end surface is located on both sides of the longitudinal axis, and the two liquid outlet directions are located in the same longitudinal plane parallel to the longitudinal axis and perpendicular to the end surface.
  • first bend and the second bend are located on both sides of the longitudinal axis along the first transverse direction, and the central axis of the first bend and the second bend The central axis of the bend lies in said same longitudinal plane.
  • the two outlets include a first outlet and a second outlet;
  • the channel assembly further includes: a first inlet and a second inlet located in the inlet area; a first conduit connecting the first The inlet and the first outlet have a first transverse distance between the first conduit and the longitudinal axis; a second conduit connects the second inlet and the second outlet, and the second conduit is connected to the second conduit.
  • the filling head further includes an end surface perpendicular to the longitudinal axis, and the first outlet and the second outlet are located on the end surface; the first conduit and the second conduit Located on both sides of the longitudinal axis along a first transverse direction parallel to the end surface, the first transverse distance and the second transverse distance are both along the first transverse direction.
  • the first conduit includes a first bend connected to the first outlet and a first connection part connected to the first bend;
  • the second conduit includes a first bend connected to the second outlet. a second bending portion connected to the outlet and a second connecting portion connected to the second bending portion; the first connecting portion and the second connecting portion extend in a direction parallel to the longitudinal axis and along the A transverse direction lies on either side of said longitudinal axis.
  • the first lateral distance is the distance between the first connecting portion and the longitudinal axis along the first lateral direction, and the first lateral distance ranges from 4mm ⁇ 10mm;
  • the second lateral distance is the distance along the first lateral direction between the second connecting part and the longitudinal axis, and the value range of the second lateral distance is 4mm ⁇ 10mm;
  • the second lateral distance The difference between a lateral distance and the second lateral distance ranges from 2 mm to 3 mm.
  • a filling device including the above-mentioned filling head.
  • a filling method using the above filling head is provided.
  • the above filling method includes: providing a package to be filled, wherein the package has an opening and a side wall defining the opening, the opening being configured to face two outlets of the filling head,
  • the side wall has an indentation line for sealing the opening after filling; filling the fluid into the package, wherein the fluid forms two jets into the opening through the two outlets. ; Wherein, the two jets contact the side wall on the side of the indentation line away from the opening.
  • the two jets include a first jet and a second jet, the first jet contacts the side wall at a first contact area, and the second jet contacts the side wall at a second contact area.
  • the package has a central axis parallel to the longitudinal axis of the filling head, the central axis being configured to coincide with the longitudinal axis when filling the fluid into the package.
  • the package has a central axis parallel to the longitudinal axis of the filling head, and when filling the fluid into the package, the central axis is substantially parallel to the longitudinal axis of the filling head.
  • the longitudinal axis is configured to coincide with said longitudinal axis.
  • the filling method before filling the fluid into the package, further includes: conveying the package below the filling head along a conveying direction, the conveying direction being consistent with the The longitudinal axes of the filling head are perpendicular to each other; there are multiple channel components, and the arrangement direction of the multiple channel components is substantially parallel to the conveying direction.
  • the package includes: a sealing structure, the sealing structure is disposed opposite the opening and includes an end connected to the side wall, the cross section of the end gradually shrinks; wherein the filling is The level of the fluid in the package is equal to or higher than the junction of the end and the side wall.
  • Figure 1 is a three-dimensional schematic view of the filling head provided by an embodiment of the present disclosure viewed from a first perspective;
  • Figure 2 is a simplified cross-sectional schematic diagram of the filling head provided by the embodiment of the present disclosure during the filling process
  • Figure 3 is a top view of the filling head of Figure 1;
  • Figure 4 is a three-dimensional schematic view of the filling head provided by the embodiment of the present disclosure viewed from a second perspective;
  • Figure 6 is a schematic diagram of the two liquid discharge directions of the filling head of Figure 5;
  • Figure 7 is a partially enlarged schematic diagram of the first conduit and the second conduit in the filling head provided by the embodiment of the present disclosure
  • Figure 8 is a partial structural schematic diagram of a filling head provided by another embodiment of the present disclosure.
  • Figure 9 is a partial structural schematic diagram of a filling head provided according to yet another embodiment of the present disclosure.
  • Figure 10 is a schematic structural diagram of a filling head and packaging on a conveying device according to an embodiment of the present disclosure
  • Figure 11 is a schematic structural diagram of a package provided according to another embodiment of the present disclosure.
  • embodiments of the present disclosure provide a filling head, its filling device and filling method, which can reduce or even avoid liquid splashing or foam formation.
  • At least one embodiment of the present disclosure provides a filling head for filling fluid
  • the filling head has a longitudinal axis and includes an inlet region and an outlet region along the longitudinal axis, the inlet region is configured to allow fluid to flow in, and the outlet region is configured to allow fluid to flow in. Fluid leaves.
  • the filling head also includes a channel assembly connecting the inlet region and the outlet region and configured to convey fluid from the inlet region to the outlet region.
  • the channel component has two outlets arranged in the outlet area. Fluid is ejected from the two outlets through the channel component.
  • the channel component is curved so that the two liquid outlet directions of the two outlets are divergent. The angles between the two liquid outlet directions and the longitudinal axis are different and/or the lateral spacing between the two outlets and the longitudinal axis is different.
  • the filling head provided by the above embodiments of the present disclosure, by making the angle between the liquid outlet direction of the two outlets and the longitudinal axis different and/or making the lateral spacing between the two outlets and the longitudinal axis different, it is possible to reduce or even Avoid liquid splashing or foaming in the packaging, thereby reducing the risk of contaminating the filling unit.
  • the two liquid outlet directions can be set to be different from the angle between the longitudinal axis, or the two outlets can be set to be different from the lateral spacing between the longitudinal axis, or the two outlets can be set to have different angles from the longitudinal axis.
  • the liquid outlet direction is set to a different angle from the longitudinal axis and the two outlets are set to a different lateral spacing from the longitudinal axis.
  • fluid refers to a pourable product, which may be a liquid or a mixture of liquid and solid particles.
  • the liquid includes but is not limited to at least one of juice, milk, yogurt, etc.
  • the solid particles include but is not limited to at least one of fruit particles, vegetables, nuts, etc., which are not limited in the embodiments of the present disclosure.
  • Figure 1 is a schematic three-dimensional view of the filling head provided by an embodiment of the present disclosure viewed from a first perspective.
  • Figure 2 is a simplified cross-sectional schematic diagram of the filling head provided by the embodiment of the present disclosure during the filling process.
  • Figure 3 is a top view of the filling head of Figure 1 .
  • Figure 4 is a schematic three-dimensional view of the filling head provided by the embodiment of the present disclosure viewed from a second perspective.
  • Figure 5 is a schematic diagram of the filling head and packaging during the filling process provided by the embodiment of the present disclosure.
  • inventions of the present disclosure provide a filling head 100 for filling fluid.
  • the filling head 100 has a longitudinal axis MM, for example, the longitudinal axis MM extends along the longitudinal direction Z.
  • the filling head 100 includes along its longitudinal axis MM an inlet area 10 configured for fluid to flow in and an outlet area 20 configured for fluid to flow out.
  • an inlet area 10 for receiving or storing a certain amount of fluid and an outlet area 20 for ejecting the fluid to the package to be filled are arranged opposite each other along the longitudinal axis MM.
  • the filling head 100 also includes a channel assembly 30 connecting the inlet region 10 and the outlet region 20 and configured to convey fluid from the inlet region 10 to the outlet region 20 .
  • the channel assembly 30 includes two inlets disposed in the inlet area 10, such as a first inlet 101 and a second inlet 102, and also includes two outlets disposed in the outlet area 20, such as a first outlet 201 and a second outlet 202.
  • the fluid passes through The channel assembly 30 enters through the first inlet 101 and the second inlet 102 and flows out from the first outlet 201 and the second outlet 202 .
  • FIG. 2 further shows the valve stem 300 of the sealing element 200.
  • these components do not belong to the filling head 100.
  • the valve stem 300 when starting filling, the valve stem 300 is raised, and the blocking element 200 moves along the longitudinal axis MM in a direction away from the filling head 100. At this time, the fluid can flow from the inlet area 10 into the channel in the direction shown by the arrow. Component 30.
  • the valve stem 300 When filling is stopped, the valve stem 300 is lowered, and the blocking element 200 moves in a direction close to the filling head 100 and is pressed into the inlet area 10 , thereby blocking or closing the first inlet 101 of the inlet area 10 and Second entrance 102.
  • the channel assembly 30 is designed to be curved so that the first liquid outlet direction F1 of the first outlet 201 and the second liquid outlet direction F2 of the second outlet 202 are divergent.
  • portions of the channel assembly 30 proximate the first outlet 201 and the second outlet 202 are curved.
  • the curved portion of the channel assembly 30 has a bell-mouth shape, so that the two liquid outlet directions F1 and F2 also have a bell-mouth shape.
  • the channel assembly 30 By designing the channel assembly 30 to be curved so that the first liquid outlet direction F1 of the first outlet 201 and the second liquid outlet direction F2 of the second outlet 202 are divergent, it is beneficial to the first jet S1 emitted from the first outlet 201 And the second jet S2 emitted from the second outlet 202 is ejected towards the side wall of the package and flows down along the side wall, thereby reducing the speed of the liquid flow, thereby reducing the risk of liquid splashing.
  • the package 40 to be filled is located below the filling head 100.
  • the package 40 has an opening 43 configured to face the first outlet 201 and the second outlet 202 of the filling head 100 and a side wall 42 defining the opening 43 .
  • Figure 6 is a schematic diagram of two liquid discharge directions of the filling head of Figure 5.
  • first included angle b1 between the first liquid outlet direction F1 and the longitudinal axis MM
  • second included angle b1 between the second liquid outlet direction F2 and the longitudinal axis MM.
  • Angle b2 where the first included angle b1 is greater than the second included angle b2.
  • the contact positions of the first jet S1 and the second jet S2 with the side wall 42 of the package 40 are different.
  • Figures 5 and 6 only illustrate in a schematic manner the situation in which the first included angle b1 of the first liquid discharge direction F1 is greater than the second included angle b2 of the second liquid discharge direction F2. It can be understood that in other embodiments, , the first included angle b1 may also be smaller than the second included angle b2. As long as the first included angle b1 and the second included angle b2 are not equal, the first jet S1 and the second jet S2 can be made to intersect at a position deviated from the center of the bottom surface, thereby changing the direction of the two jets after collision and reducing the formation of a larger There is a risk of large splashes or foam, so this company This embodiment does not limit this.
  • the first included angle b1 has a value range of 15 degrees to 25 degrees; the second included angle b2 has a value range of 15 degrees to 25 degrees; the first included angle b1 and the second included angle b2
  • the value range of the difference between is 2 degrees to 5 degrees.
  • channel assembly 30 includes first conduit 310 and second conduit 320 .
  • the first conduit 310 includes a first bending portion 311 connected to the first outlet 201 and a first connecting portion 312 connected to the first bending portion 311 .
  • the second conduit 320 includes a second bending portion 321 connected to the second outlet 202 and a second connecting portion 322 connected to the second bending portion 321 .
  • the first connection part 312 is connected to the first outlet 201
  • the second connection part 322 is connected to the second outlet 202 .
  • the central axis O1 of the first curved portion 311 is inclined relative to the longitudinal axis MM at a first inclination angle a1.
  • the central axis O2 of the second curved portion 321 is inclined relative to the longitudinal axis MM at a second inclination angle a2.
  • the first tilt angle a1 is greater than the second tilt angle a2.
  • FIG. 5 only shows in a schematic manner the situation where the first inclination angle a1 of the first bending part 311 is greater than the second inclination angle a2 of the second bending part 321 . It can be understood that in other embodiments, the first inclination angle a1 is greater than the second inclination angle a2 of the second bending part 321 . The angle a1 may also be smaller than the second tilt angle a2.
  • the first included angle b1 in the first liquid outlet direction F1 can be made not equal to the second included angle b2 in the second liquid outlet direction F2, so that the first jet flow S1 and the second jet S2 intersect at a position deviated from the center of the bottom surface, thereby reducing or avoiding liquid splashing or foaming in the package, so this is not limited in the embodiment of the present disclosure.
  • the value range of the first tilt angle a1 is 15 degrees to 25 degrees; the value range of the second tilt angle a2 is 15 degrees to 25 degrees; the value of the first tilt angle a1 and the second tilt angle a2 is The value range of the difference between is 2 degrees to 5 degrees.
  • the filling head 100 also includes an end perpendicular to the longitudinal axis MM
  • the first outlet 201 and the second outlet 202 are located on the end face 210; the first outlet 201 and the second outlet 202 are located on both sides of the longitudinal axis MM along the first transverse direction X parallel to the end face 210.
  • the first liquid discharge direction F1 and the second liquid discharge direction F2 are located in the same longitudinal plane P parallel to the longitudinal axis MM and perpendicular to the end surface 210 .
  • first liquid discharge direction F1 and the second liquid discharge direction F2 are coplanar, for example, they are all located in a longitudinal plane passing through the longitudinal axis MM and perpendicular to the end surface 210. This can further reduce the risk of the jet colliding with the corner. causing liquid splashing.
  • the first bend 311 and the second bend 321 are located on both sides of the longitudinal axis MM along the first transverse direction X, and the central axis O1 of the first bend 311 and the second bend
  • the central axis O2 of the portion 321 is located in the same longitudinal plane P.
  • the central axis O1 of the first bending portion 311 , the central axis O2 of the second bending portion 321 and the longitudinal axis MM are coplanar, for example, they are all located in a longitudinal plane passing through the longitudinal axis MM and perpendicular to the end surface 210 , so that further Reduce liquid splash caused by jet hitting corners.
  • the first connecting portion 312 and the second connecting portion 322 extend in a direction parallel to the longitudinal axis MM and are located on both sides of the longitudinal axis MM along the first transverse direction D1.
  • the central axis (not shown) of the first connecting portion 312 and the central axis (not shown) of the second connecting portion 322 are located in the same longitudinal plane P. In this way, it can be ensured that the fluid reaches the outlet in the shortest path during the filling process, thereby increasing the filling speed.
  • the central axis of the first connecting part 312 , the central axis of the second connecting part 322 and the longitudinal axis MM are coplanar, for example, they are all located in a longitudinal plane passing through the longitudinal axis MM and perpendicular to the end surface 210 , which is beneficial to improving the filling efficiency.
  • the loading speed also further reduces liquid splash caused by the jet hitting the corner.
  • FIG. 7 is a partially enlarged schematic view of the first conduit and the second conduit in the filling head provided by an embodiment of the present disclosure.
  • FIG. 7 is a partially enlarged schematic diagram of the first conduit 310 and the second conduit 320 of the filling head 100 of FIG. 5 .
  • the first conduit 310 connects the first inlet 101 and the first outlet 201, and there is a first transverse distance d1 along the first transverse direction X between the first conduit 310 and the longitudinal axis MM.
  • the second conduit 320 connects the second inlet 102 and the second outlet 202 and has a second transverse distance d2 along the first transverse direction X between the second conduit 320 and the longitudinal axis MM, where the first transverse distance d1 and the second transverse distance d2 is equal.
  • the longitudinal axis MM of the filling head 100 and the central axis NN of the packaging 40 are coaxially arranged.
  • the first lateral distance d1 to be equal to the second lateral distance d2
  • the liquid outlet directions of the two jets are not affected, so this is preferred.
  • Figure 7 only shows the case where the first lateral distance d1 and the second lateral distance d2 are equal. It can be understood that in the embodiment of the present disclosure, the first lateral distance d1 and the second lateral distance d2 may also be unequal. In the following will be described in detail in the embodiment.
  • Figure 8 is a partial structural diagram of a filling head provided by another embodiment of the present disclosure.
  • the channel assembly 30' in Figure 8 includes an inlet 103 located in the inlet area 10 and a conduit 330 having a bifurcated structure 331. That is, Figure 8 only uses the bifurcated structure of the conduit 330 to connect one inlet and two outlets, and does not adopt the form of two conduits in Figure 5 .
  • the bifurcated structure 331 extends between the inlet 103 and the two outlets 201, 202, so that the inlet 103 communicates with the two outlets 201, 202 through the bifurcated structure 331.
  • the duct in Figure 8 may be more complex in design, but it can reduce the number of inlets and the occupied area.
  • Figure 9 is a partial structural schematic diagram of a filling head provided by yet another embodiment of the present disclosure.
  • the difference from the filling head shown in Figure 5 is that the first transverse distance d1 between the first conduit 310 and the longitudinal axis MM of the filling head 100 in Figure 9 is greater than the longitudinal distance between the second conduit 320 and the filling head 100.
  • first jet S1 and the second jet S2 flow along the side wall 42 When going down to the bottom, they can meet at a position deviated from the center of the bottom, thereby changing the direction of the two jets after collision and reducing the risk of splashing into the packaging opening or outside.
  • FIG. 9 only shows the case where the first lateral distance d1 is greater than the second lateral distance d2. It can be understood that in other embodiments, the first lateral distance d1 may also be less than the second lateral distance d2. As long as the first lateral distance d1 and the second lateral distance d2 are not equal, the first jet S1 and the second jet S2 can be made to intersect at a position offset from the center of the bottom surface, thereby reducing or avoiding the formation of liquid splash or foam in the package. , therefore the embodiment of the present disclosure does not limit this.
  • the first included angle b1 is equal to the second included angle b2
  • the first inclination angle a1 is equal to the second inclination angle a2.
  • the first conduit 310 includes a first bending portion 311 connected to the first outlet 201 and a first connecting portion 312 connected to the first bending portion 311;
  • the second conduit 320 includes a first bending portion 311 connected to the first outlet 202.
  • the second bending part 321 and the second connecting part 322 connected to the second bending part 321.
  • the first connecting portion 312 and the second connecting portion 322 extend in a direction parallel to the longitudinal axis MM and are located on both sides of the longitudinal axis MM along the first transverse direction X.
  • the first lateral distance d1 has a value range of 1 to 10 mm; the second lateral distance d2 has a value range of 4 mm to 10 mm; the difference between the first lateral distance d1 and the second lateral distance d2
  • the value range is 2mm ⁇ 3mm. If the difference between the two is too small, there will be little difference between the liquid flow states on both sides. If the difference is too large, a liquid flow with a larger distance may deviate from the expected landing point on the side wall of the packaging.
  • the selection of the first lateral distance d1 and the second lateral distance d2 should consider the processing requirements. If they are too small, the wall thickness between the holes on both sides will be too thin and difficult to process. Usually the wall thickness cannot be less than 2mm. For 6mm For holes, the minimum distance between the two holes should not be less than 8mm.
  • the filling head includes four channel assemblies 30.
  • the first outlet 101 and the second outlet 102 of each channel assembly 30 form a pair of filling openings.
  • the first transverse direction X is located in the longitudinal direction Both sides of axis MM.
  • the four pairs of filling ports ie, the four channel assemblies 30
  • Figure 3 only shows a situation that includes four channel assemblies. It can be understood that in other embodiments, two, three, or more channel assemblies can also be provided. Those skilled in the art can adjust the package according to the volume of the package. Select the appropriate number and distribution of channel components for the area and area.
  • the four channel assemblies 30 are equally spaced in the second transverse direction Y, thereby simplifying the manufacturing process.
  • At least one embodiment of the present disclosure also provides a filling method using the filling head of any of the previous embodiments.
  • the angle between the liquid outlet direction of the two outlets of the filling head and the longitudinal axis is different and/or the lateral spacing between the two outlets and the longitudinal axis is different. , can reduce or even avoid liquid splashing or foaming in the packaging during the filling process, thereby reducing the risk of contaminating the filling device.
  • the filling method using the filling head of Figure 5 provided by the embodiment of the present disclosure includes:
  • S200 Filling fluid into the package 40, wherein the fluid forms two jets into the opening 43 through the first outlet 201 and the second outlet 202, wherein the two jets are on the side of the indentation line 41 away from the opening 43 and the side wall 42 touch.
  • the determination of the liquid outlet directions of the two outlets of the filling head mainly considers the spatial position of the filling head and the packaging and the structural characteristics of the filling head and the packaging.
  • the first jet S1 contacts the side wall 42 at the first contact area 421
  • the second jet S2 contacts the side wall 42 at the second contact area 422
  • the first contact area 421 is different from the second contact area.
  • area 422 and the vertical distance from the first contact area 421 to the opening 43 (ie, the distance along the longitudinal axis direction) is not equal to the vertical distance from the second contact area 422 to the opening 43 (ie, the distance along the longitudinal axis direction).
  • the liquid flows can start to flow downward along different positions of the side wall 42 and finally meet at a position deviated from the center of the bottom surface, thereby changing the direction of the two jets after collision and reducing the risk of forming large splashes or foams.
  • the package 40 has a central axis NN.
  • the central axis NN and the longitudinal axis MM are substantially parallel, preferably coincident with each other. In this way, it is more conducive to control the direction of the jet during the filling process, so that the jet reaches the ideal position.
  • the terms "substantially parallel” or “substantially parallel” in this disclosure may be understood to mean substantially or approximately parallel, allowing for process errors or deviations.
  • the filling head 100 may have a plurality of channel assemblies, each channel assembly including a pair of outlets 201, 202.
  • the liquid can be injected into the package 40 through multiple outlets of the multiple channel assemblies, thereby increasing the filling speed.
  • Figure 10 is a schematic structural diagram of a filling head and packaging on a conveying device according to an embodiment of the present disclosure. As shown in Figure 10, before filling the fluid into the package 40 of Figure 5, the above filling method may also include:
  • S300 Convey the package 40 to the bottom of the filling head 100 along the conveying direction V.
  • the conveying direction V and the longitudinal axis MM of the filling head 100 are perpendicular to each other.
  • the transport direction V is, for example, parallel to the first transverse direction X.
  • the liquid in the package 40 can be filled at once or in batches until it is filled. In order to avoid liquid splashing caused by high jet velocity during one filling, in actual production, batch filling is mostly used.
  • the conveying device 400 first moves the package 40 along the conveying direction V to below the filling head 100 and stops briefly to perform the first filling. After the liquid is filled to the designated position in the package 50, the conveying device 400 moves the package 40 to the next filling head 400 to perform a second filling and fill the package 40.
  • the filling head 400 may have the same or different configuration as the filling head 100 . Since the package 40 is empty during the first filling, it is more likely to cause liquid splashing or foaming, so the filling head 100 provided by the embodiment of the present disclosure is preferably used during the first filling.
  • the dotted frame A in Figure 10 is a simplified top view of the filling head 100 and the packaging 40 of Figure 5 , where the filling head 100 includes four channel components, and each channel component includes a pair of outlets 201 and 202 . Liquid is filled into packages 40 through eight outlets.
  • dashed box A When filling using the method in dashed box A, there are the following hidden dangers:
  • the conveying device 400 (such as a conveyor belt or conveyor chain) needs to stay briefly below the filling head 100, the conveyor belt or conveyor chain can be positioned below the filling head 100 and try to make the longitudinal axis MM of the filling head 100 and the center of the packaging 40 The axes coincide.
  • the conveyor belt or conveyor chain will have mechanical losses and positioning deviation in the conveying direction V, causing the longitudinal axis MM of the filling head 100 to deviate far from the central axis of the packaging 40, thus affecting the injection of the jet. Effect.
  • the filling head 100 in the dotted frame A is rotated 90°, so that the arrangement direction of the multiple channel components (i.e., the first transverse direction x shown in Figure 10) and the conveying direction V is basically parallel.
  • the arrangement direction of the multiple channel components i.e., the first transverse direction x shown in Figure 10
  • the conveying direction V is basically parallel.
  • the filling head provided by the embodiment of the present disclosure can not only fill packages with a flat bottom as shown in Figure 5, but can also fill packages with a non-flat bottom.
  • Figure 11 is a schematic structural diagram of a package provided according to another embodiment of the present disclosure.
  • the package 50 includes a side wall 52 having an opening 53 configured to face the first outlet 201 and the second outlet 202 of the filling head 100 and defining the opening 53 .
  • the indentation line 51 seals the opening 53 .
  • the package 50 further includes a sealing structure 54 disposed opposite to the opening 53 .
  • the sealing structure 54 includes an end portion 541 connected to the side wall 52, and the cross section of the end portion 541 gradually decreases.
  • the sealing structure 54 further includes a flow guide component 542 coupled to the end 541 and a cover 543 covering the flow guide component 542 .
  • the liquid forms two jets into the opening 53 through at least the first outlet 201 and the second outlet 202.
  • the side is in contact with the side wall 52 . In this way, it not only prevents the liquid flow from hitting the four inclined side walls of the end portion 541 and causing it to flow down along the side walls 52 , but also ensures that the liquid flow does not fall above the indentation line 51 , thereby avoiding affecting subsequent processes. Sealing of opening 53.
  • the liquid level of the fluid filled into the package is at least flush with the connection 54 between the end 54 and the side wall 52 , that is, the liquid level is greater than or equal to the connection 54 .
  • the total amount of fluid filled into the package is less than 80% of the total capacity of the package, preferably less than 50%. In one example, when the total packaging capacity is 250ml, the total amount of liquid filled for the first time is 80ml.
  • the filling head In the filling head, its filling device and the filling method provided by the above embodiments of the present disclosure, at least one channel component is provided on the filling head, and the liquid outlet directions of the two outlets of the channel component are set to be consistent with the longitudinal axis. Different angles between the two outlets and/or setting the lateral spacing between the two outlets and the longitudinal axis to be different can reduce or even avoid liquid splashing or foaming in the packaging, thereby reducing the risk of contaminating the filling device.
  • the filling head provided by the above-mentioned embodiment of the present disclosure can make the first jet and the second jet flow along the side. The walls flow down to the bottom and meet at a position offset from the center of the bottom, thus changing the direction of the collision of the two jets and reducing the risk of larger splashes or foam.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Abstract

一种灌装头及其灌装装置和灌装方法。所述灌装头(100)具有纵向轴线(MM)并且沿所述纵向轴线(MM)包括入口区域(10)和出口区域(20)；所述灌装头(100)包括：通道组件(20)，连接所述入口区域(10)和所述出口区域(20)且配置为将所述流体从所述入口区域(10)传送到所述出口区域(20)，所述通道组件(30)具有设置在出口区域(20)的两个出口(201,202)，所述流体经所述通道组件(30)从所述两个出口(201,202)射出，所述通道组件(30)为弯曲的以使所述两个出口(201,202)的两个出液方向(F1、F2)呈发散状；其中，所述两个出液方向(F1、F2)与所述纵向轴线(MM)之间的夹角不同，和/或所述两个出口(201,202)与所述纵向轴线(MM)之间的横向间距不同。上述灌装头(100)可减少甚至避免液体在包装中形成液体飞溅或泡沫，从而降低污染灌装装置的风险。

Description

灌装头及其灌装装置和灌装方法
相关申请的交叉引用
本申请基于并且要求于2022年4月7日递交、名称为“灌装头及其灌装装置和灌装方法”的中国专利申请第202210364681.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开实施例涉及一种灌装头及其灌装装置和灌装方法。
背景技术
灌装装置可用于将液体产品灌装到包装中，例如，液体产品可以是诸如牛奶、果汁、浆料或酸奶等的食品。在灌装过程中，由于灌装速度较快，容易在包装中形成液体飞溅或泡沫，从而影响到包装的封合或污染灌装装置。
发明内容
本公开实施例提供一种灌装头及其灌装装置和灌装方法。
根据本公开第一方面，提供一种灌装头，其用于灌装流体，所述灌装头具有纵向轴线并且沿所述纵向轴线包括入口区域和出口区域，所述入口区域配置为使所述流体流入，所述出口区域配置为使所述流体离开；所述灌装头还包括：通道组件，连接所述入口区域和所述出口区域且配置为将所述流体从所述入口区域传送到所述出口区域，所述通道组件具有设置在出口区域的两个出口，所述流体经所述通道组件从所述两个出口射出，所述通道组件为弯曲的以使所述两个出口的两个出液方向呈发散状；其中，所述两个出液方向与所述纵向轴线之间的夹角不同，和/或所述两个出口与所述纵向轴线之间的横向间距不同。
至少一些实施例中，所述两个出口包括第一出口和第二出口；所述通道组件包括第一导管和第二导管；所述第一导管包括与所述第一出口连接的第一弯曲部，所述第一弯曲部的中心轴线以第一倾斜角度相对所述纵向轴线倾 斜；所述第二导管包括与所述第二出口连接的第二弯曲部，所述第二弯曲部的中心轴线以第二倾斜角度相对所述纵向轴线倾斜；其中，所述第一倾斜角度和所述第二倾斜角度不同。
至少一些实施例中，所述第一倾斜角度的取值范围为15度至25度；所述第二倾斜角度的取值范围为15度至25度；所述第一倾斜角度和所述第二倾斜角度之间的差值的取值范围为2度至5度。
至少一些实施例中，所述灌装头还包括垂直于所述纵向轴线的端面，所述第一出口和所述第二出口位于所述端面上；所述第一出口和所述第二出口沿平行于所述端面的第一横向方向位于所述纵向轴线的两侧，并且所述两个出液方向位于平行于所述纵向轴线且垂直于所述端面的同一纵向平面内。
至少一些实施例中，所述第一弯曲部和所述第二弯曲部沿所述第一横向方向位于所述纵向轴线的两侧，并且所述第一弯曲部的中心轴线和所述第二弯曲部的中心轴线位于所述同一纵向平面内。
至少一些实施例中，所述两个出口包括第一出口和第二出口；所述通道组件还包括：位于所述入口区域的第一入口和第二入口；第一导管，连接所述第一入口和所述第一出口，所述第一导管与所述纵向轴线之间具有第一横向距离；第二导管，连接所述第二入口和所述第二出口，所述第二导管与所述纵向轴线之间具有第二横向距离；其中，所述第一横向距离和所述第二横向距离不同。
至少一些实施例中，所述灌装头还包括垂直于所述纵向轴线的端面，所述第一出口和所述第二出口位于所述端面上；所述第一导管和所述第二导管沿平行于所述端面的第一横向方向位于所述纵向轴线的两侧，所述第一横向距离和所述第二横向距离均沿所述第一横向方向。
至少一些实施例中，所述第一导管包括与所述第一出口连接的第一弯曲部和与所述第一弯曲部连接的第一连接部；所述第二导管包括与所述第二出口连接的第二弯曲部和与所述第二弯曲部连接的第二连接部；所述第一连接部和所述第二连接部沿平行于所述纵向轴线方向延伸，并且沿所述第一横向方向位于所述纵向轴线的两侧。
至少一些实施例中，所述第一横向距离为所述第一连接部与所述纵向轴线之间沿所述第一横向方向的距离，所述第一横向距离的取值范围为 4mm～10mm；第二横向距离为所述第二连接部与所述纵向轴线之间沿所述第一横向方向的距离，所述第二横向距离的取值范围为4mm～10mm；所述第一横向距离和所述第二横向距离的差值的取值范围为2mm～3mm。
根据本公开第二方面，提供一种灌装装置，包括上述灌装头。
根据本公开第三方面，提供一种采用上述灌装头的灌装方法。
至少一些实施例中，上述灌装方法包括：提供待灌装的包装，其中所述包装具有开口和限定所述开口的侧壁，所述开口配置为面向所述灌装头的两个出口，所述侧壁具有用于灌装后封合所述开口的压痕线；灌装所述流体到所述包装中，其中所述流体经所述两个出口形成两股射流进入所述开口中；其中，所述两股射流在所述压痕线远离所述开口的一侧与所述侧壁接触。
至少一些实施例中，所述两股射流包括第一射流和第二射流，所述第一射流与所述侧壁在第一接触区接触，所述第二射流与所述侧壁在第二接触区接触，所述第一接触区不同于所述第二接触区，并且所述第一接触区和所述开口之间沿所述纵向轴线方向的距离不等于所述第二接触区和所述开口之间沿所述纵向轴线方向的距离。
至少一些实施例中，所述包装具有平行于所述灌装头的纵向轴线的中轴线，在灌装所述流体到所述包装中时，所述中轴线配置为与所述纵向轴线重合。
至少一些实施例中，所述包装具有平行于所述灌装头的纵向轴线的中轴线，在灌装所述流体到所述包装中时，所述中轴线基本平行于所述灌装头的纵向轴线配置为与所述纵向轴线重合。
至少一些实施例中，其中在灌装所述流体到所述包装中之前，所述灌装方法还包括：沿输送方向输送所述包装至所述灌装头下方，所述输送方向与所述灌装头的纵向轴线相互垂直；所述通道组件为多个，多个所述通道组件的排布方向与所述输送方向基本平行。
至少一些实施例中，所述包装包括：密封结构，所述密封结构与所述开口相对设置并且包括与所述侧壁连接的端部，所述端部的横截面逐渐缩小；其中灌装到所述包装中的流体的液面等于或高于所述端部与所述侧壁的连接处。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为本公开实施例提供的灌装头从第一视角观察的立体示意图；
图2为本公开实施例提供的灌装头在灌装过程中的简化截面示意图；
图3为图1的灌装头的俯视图；
图4为本公开实施例提供的灌装头从第二视角观察的立体示意图；
图5为本公开实施例提供的灌装头和包装在灌装过程中的示意图；
图6为图5的灌装头的两个出液方向的示意图；
图7为本公开实施例提供的灌装头中第一导管和第二导管的局部放大示意图；
图8为本公开另一实施例提供的灌装头的局部结构示意图；
图9为根据本公开再一实施例提供的灌装头的局部结构示意图；
图10为根据本公开实施例提供的灌装头和包装在输送装置上的结构示意图；
图11为根据本公开另一实施例提供的包装的结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同，并不排除其 他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则所述相对位置关系也可能相应地改变。
在液体灌装过程中，需要尽可能快地将液体灌装到包装中实现高速且大批量灌装。通常，灌装装置包括供液装置和灌装头。灌装头的入口区域与供液装置连接用于接收液体，出口区域设置有多个出口，液体通过多个出口灌装到待灌装的包装(例如包装盒)中。
然而，现有灌装头在灌装时，由于流速高，会产生液体飞溅或形成泡沫，当飞溅到包装盒的封合区域时，会影响包装盒的封合效果，例如密封性变差，如果飞溅到包装盒外，例如灌装装置上，又会对灌装装置造成污染。另外，当液体形成泡沫时，会影响饮用时的口感。
为此，本公开实施例提供一种灌装头及其灌装装置和灌装方法，能够减少甚至避免液体飞溅或形成泡沫。
本公开至少一个实施例提供一种灌装头，其用于灌装流体，灌装头具有纵向轴线并且沿纵向轴线包括入口区域和出口区域，入口区域配置为使流体流入，出口区域配置为使流体离开。灌装头还包括通道组件，其连接入口区域和出口区域且配置为将流体从入口区域传送到出口区域。通道组件具有设置在出口区域的两个出口，流体经通道组件从两个出口射出，通道组件为弯曲的以使两个出口的两个出液方向呈发散状。两个出液方向与纵向轴线之间的夹角不同和/或两个出口与纵向轴线之间的横向间距不同。
上述本公开实施例提供的灌装头中，通过使两个出口的出液方向与纵向轴线之间的夹角不同和/或使两个出口与纵向轴线之间的横向间距不同，能够减少甚至避免液体在包装中形成液体飞溅或泡沫，从而降低污染灌装装置的风险。
本公开实施例中，可以将两个出液方向设置为与纵向轴线之间的夹角不同，或者，可以将两个出口设置为与纵向轴线之间的横向间距不同，或者，可以将两个出液方向设置为与纵向轴线之间的夹角不同并且将两个出口设置为与纵向轴线之间的横向间距不同，上述三种实现方式都可以减少或避免液体在包装中形成液体飞溅或泡沫，本公开实施例对此不做限定。
本公开实施例中，流体指的是可倾倒产品，可以是液体，也可以是液体和固体颗粒的混合物。例如，液体包括但不限于果汁、牛奶、酸奶等中的至少一种，固体颗粒包括但不限于果粒、蔬菜、坚果等中的至少一种，本公开实施例对此不做限定。
下面通过几个具体的实施例对本公开进行说明。为了保持本公开实施例以下的说明清楚且简明，可省略已知功能和已知部件的详细说明。当本公开实施例的任一部件在一个以上的附图中出现时，该部件在每个附图中可以由相同的参考标号表示。
图1为本公开实施例提供的灌装头从第一视角观察的立体示意图。图2为本公开实施例提供的灌装头在灌装过程中的简化截面示意图。图3为图1的灌装头的俯视图。图4为本公开实施例提供的灌装头从第二视角观察的立体示意图。图5为本公开实施例提供的灌装头和包装在灌装过程中的示意图。
如图1至图4所示，本公开实施例提供一种灌装头100，其用于灌装流体，灌装头100具有纵向轴线MM，例如，纵向轴线MM沿纵向方向Z延伸。灌装头100沿其纵向轴线MM包括入口区域10和出口区域20，入口区域10配置为使流体流入，出口区域20配置为使流体离开。例如，入口区域10与出口区域20沿纵向轴线MM相对设置，入口区域10用于接收或储存一定量的流体，出口区域20用于将流体射出到待灌装的包装。
如图2所示，灌装头100还包括通道组件30，连接入口区域10和出口区域20且配置为将流体从入口区域10传送到出口区域20。通道组件30包括设置在入口区域10的两个入口，例如第一入口101和第二入口102，还包括设置在出口区域20的两个出口，例如第一出口201和第二出口202，流体经通道组件30的第一入口101和第二入口102进入，并且从第一出口201和第二出口202流出。
为了说明灌装头100在灌装过程中的工作原理，图2进一步示出了封合元件200的阀杆300，然而这些组件并不属于灌装头100。如图2所示，在开始灌装时，抬高阀杆300，阻挡元件200沿纵向轴线MM朝远离灌装头100的方向移动，此时流体可沿箭头所示方向从入口区域10流入通道组件30。当停止灌装时，降低阀杆300，阻挡元件200朝靠近灌装头100的方向移动并且被挤压到入口区域10，由此阻挡或关闭入口区域10的第一入口101和 第二入口102。
如图2和图5所示，通道组件30设计为弯曲的以使第一出口201的第一出液方向F1和第二出口202的第二出液方向F2呈发散状。例如，通道组件30的靠近第一出口201和第二出口202的部分为弯曲的。在灌装口100经纵向轴线MM的纵向截面中，通道组件30的弯曲部分具有喇叭口状，以使两个出液方向F1、F2也具有喇叭口状。通过将通道组件30设计为弯曲以使第一出口201的第一出液方向F1和第二出口202的第二出液方向F2呈发散状，有利于从第一出口201射出的第一射流S1和从第二出口202射出的第二射流S2朝包装的侧壁射出并且沿着侧壁顺流而下，由此降低液流的速度，从而降低液体飞溅的风险。
如图5所示，在灌装过程中，待灌装的包装40位于灌装头100下方。包装40具有开口43和限定开口43的侧壁42，开口43配置为面向灌装头100的第一出口201和第二出口202。
发明人发现，在利用现有灌装头灌装液体时，形成液体飞溅的主要原因之一是两股射流在包装底面的中心处交汇。由于两股射流的喷射速度较高，当在此处交汇时，极易飞溅到包装开口的封合处或从开口飞溅出去，造成包装的密封性变差或者污染灌装装置，也更容易产生泡沫。
为此，本公开实施例提供一种改进方式。图6为图5的灌装头的两个出液方向的示意图。如图5和图6所示，本公开实施例中，第一出液方向F1与纵向轴线MM之间具有第一夹角b1，第二出液方向F2与纵向轴线MM之间具有第二夹角b2，其中第一夹角b1大于第二夹角b2。如图5所示，由于第一夹角b1大于第二夹角b2，使第一射流S1和第二射流S2各自与包装40的侧壁42的接触位置不同，当第一射流S1和第二射流S2沿侧壁42顺流而下到底面时，可以在偏离底面中心的位置处交汇，由此改变两股射流碰撞后的方向，降低形成较大飞溅或泡沫的风险。
图5和图6仅以示意性方式示出了第一出液方向F1的第一夹角b1大于第二出液方向F2的第二夹角b2的情况，可以理解的是，在其他实施例中，第一夹角b1也可以小于第二夹角b2。只要第一夹角b1和第二夹角b2不相等，均可以使第一射流S1和第二射流S2在偏离底面中心的位置处交汇，由此改变两股射流碰撞后的方向，降低形成较大飞溅或泡沫的风险，因此本公 开实施例对此不做限定。
本公开实施例中，第一夹角b1的取值范围为15度至25度；第二夹角b2的取值范围为15度至25度；第一夹角b1和第二夹角b2之间的差值的取值范围为2度至5度。
如图5所示，通道组件30包括第一导管310和第二导管320。例如，第一导管310包括与第一出口201连接的第一弯曲部311和与第一弯曲部311连接的第一连接部312。例如，第二导管320包括与第二出口202连接的第二弯曲部321和与第二弯曲部321连接的第二连接部322。第一连接部312与第一出口201连接，第二连接部322与第二出口202连接。这样，从第一入口101进入的流体经第一连接部312和第一弯曲部311后从第一出口201流出，形成第一射流S1，从第二入口102进入的流体经第二连接部322和第一弯曲部321后从第二出口202流出，形成第二射流S2。
如图5所示，第一弯曲部311的中心轴线O1以第一倾斜角度a1相对纵向轴线MM倾斜。第二弯曲部321的中心轴线O2以第二倾斜角度a2相对纵向轴线MM倾斜。例如，第一倾斜角度a1大于第二倾斜角度a2。通过将第一倾斜角度a1设置为大于第二倾斜角度a2，可改变流体在第一导管310和第二导管320中的路径，从而改变流体的第一出液方向F1和第二出液方向F2，从而更有利于形成具有不同出射角度的两股射流S1、S2，由此降低产生较大飞溅或泡沫的风险。
图5仅以示意性方式示出了第一弯曲部311的第一倾斜角度a1大于第二弯曲部321的第二倾斜角度a2的情况，可以理解的是，在其他实施例中，第一倾斜角度a1也可以小于第二倾斜角度a2。只要第一倾斜角度a1和第二倾斜角度a2不相等，均可以使第一出液方向F1的第一夹角b1不等于第二出液方向F2的第二夹角b2，从而使第一射流S1和第二射流S2在偏离底面中心的位置处交汇，由此减少或避免液体在包装中形成液体飞溅或泡沫，因此本公开实施例对此不做限定。
本公开实施例中，第一倾斜角度a1的取值范围为15度至25度；第二倾斜角度a2的取值范围为15度至25度；第一倾斜角度a1和第二倾斜角度a2之间的差值的取值范围为2度至5度。
如图3和图4所示，例如，灌装头100还包括垂直于纵向轴线MM的端 面210，第一出口201和第二出口202位于端面210上；第一出口201和第二出口202沿平行于端面210的第一横向方向X位于纵向轴线MM的两侧。例如，第一出液方向F1和第二出液方向F2位于平行于纵向轴线MM且垂直于端面210的同一纵向平面P内。通过使第一出液方向F1和第二出液方向F2位于同一纵向平面P内，可避免两股射流S1、S2射向包装40的侧壁42的非平整区域，例如侧壁42的拐角处(通常侧壁具有四个拐角)的位置，这样可进一步降低因射流碰撞到拐角而引起的液体飞溅。一个示例中，第一出液方向F1、第二出液方向F2和纵向轴线MM共面，例如均位于经纵向轴线MM且垂直于端面210的纵向平面内，这样可进一步降低因射流碰撞到拐角而引起的液体飞溅。
如图3和图5所示，例如，第一弯曲部311和第二弯曲部321沿第一横向方向X位于纵向轴线MM的两侧，并且第一弯曲部311的中心轴线O1和第二弯曲部321的中心轴线O2位于同一纵向平面P内。通过使第一弯曲部311的中心轴线O1和第二弯曲部321的中心轴线O2位于同一纵向平面P内，有利于控制流体的出液方向，使第一出液方向F1和第二出液方向F2位于同一纵向平面P内。一个示例中，第一弯曲部311的中心轴线O1、第二弯曲部321的中心轴线O2和纵向轴线MM共面，例如均位于经纵向轴线MM且垂直于端面210的纵向平面内，这样可进一步降低因射流碰撞到拐角而引起的液体飞溅。
如图5所示，例如，第一连接部312和第二连接部322沿平行于纵向轴线MM的方向延伸，并且沿第一横向方向D1位于纵向轴线MM的两侧。例如，第一连接部312的中心轴线(未示出)和第二连接部322的中心轴线(未示出)位于同一纵向平面P内。这样，可以保证流体在灌装过程中以最短路径达到出口，提高灌装速度。一个示例中，第一连接部312的中心轴线、第二连接部322的中心轴线和纵向轴线MM共面，例如均位于经纵向轴线MM且垂直于端面210的纵向平面内，既有利于提高灌装速度，也进一步降低因射流碰撞到拐角而引起的液体飞溅。
图7为本公开实施例提供的灌装头中第一导管和第二导管的局部放大示意图。例如，图7为图5的灌装头100的第一导管310和第二导管320的局部放大示意图。
结合图5和图7，第一导管310连接第一入口101和第一出口201，第一导管310与纵向轴线MM之间具有沿第一横向方向X的第一横向距离d1。第二导管320连接第二入口102和第二出口202，第二导管320与纵向轴线MM之间具有沿第一横向方向X的第二横向距离d2，其中第一横向距离d1和第二横向距离d2相等。
在灌装过程中，通常灌装头100的纵向轴线MM与包装40的中轴线NN为同轴设置。本实施例中，通过将第一横向距离d1设置为与第二横向距离d2相等，可不影响两股射流的出液方向，因此为优选。
图7仅示出了第一横向距离d1和第二横向距离d2相等的情况，可以理解的是，本公开实施例中，第一横向距离d1和第二横向距离d2也可以不相等，在下面的实施例中将具体描述。
图8为本公开另一实施例提供的灌装头的局部结构示意图。与图5所示的灌装头不同之处在于，图8通道组件30’包括位于入口区域10的入口103以及具有分叉结构331的导管330。也就是，图8仅利用导管330的分叉结构将一个入口和两个出口相连，并没有采用图5的两个导管的形式。
如图8所示，例如，分叉结构331在入口103和两个出口201、202之间延伸，以使入口103通过分叉结构331与两个出口201，202连通。相比于图5，图8的导管在设计上可能较复杂，但可以减少入口的数量和所占用的面积。
图9为本公开再一实施例提供的灌装头的局部结构示意图。与图5所示的灌装头不同之处在于，图9的第一导管310与灌装头100的纵向轴线MM之间的第一横向距离d1大于第二导管320与灌装头100的纵向轴线MM之间第二横向距离d2。由于第一横向距离d1大于第二横向距离d2，第一射流S1和第二射流S2与包装40的侧壁42的接触位置不同，当第一射流S1和第二射流S2沿侧壁42顺流而下到底面时，可以在偏离底面中心的位置处交汇，从而改变两股射流碰撞后的方向，降低飞溅到包装开口或之外的风险。
图9仅示出了第一横向距离d1大于第二横向距离d2的情况，可以理解的是，在其他实施例中，第一横向距离d1也可以小于第二横向距离d2。只要第一横向距离d1和第二横向距离d2不相等，均可以使第一射流S1和第二射流S2在偏离底面中心的位置处交汇，由此减少或避免液体在包装中形成液体飞溅或泡沫，因此本公开实施例对此不做限定。
本公开实施例中，当第一横向距离d1和第二横向距离d2不相等时，第一出液方向F1的第一夹角b1与第二出液方向F2的第二夹角b2可以相等，也可以不相等；第一弯曲部311的第一倾斜角度a1与第二弯曲部321的第二倾斜角度a2可以相等，也可以不相等。然而，当对射流的出液方向影响因素较多时，会增加设计灌装头的复杂性，因此，本公开实施例中，在第一横向距离d1和第二横向距离d2不相等的情况下，优选第一夹角b1等于第二夹角b2，并且第一倾斜角度a1等于第二倾斜角度a2。
如图9所示，第一导管310包括与第一出口201连接的第一弯曲部311和与第一弯曲部311连接的第一连接部312；第二导管320包括与第二出口202连接的第二弯曲部321和与第二弯曲部321连接的第二连接部322。第一连接部312和第二连接部322沿平行于纵向轴线MM方向延伸，并且沿第一横向方向X位于纵向轴线MM的两侧。通过使第一连接部312和第二连接部322沿平行于纵向轴线MM方向延伸，可使流体以最短路径流向出口，从而提高灌装速度。
如图9所示，例如，第一横向距离d1为第一连接部312与纵向轴线MM之间沿第一横向方向X的距离；第二横向距离d2为第二连接部322与纵向轴线MM之间沿第一横向方向X的距离。
本公开实施例中，第一横向距离d1的取值范围为1为4mm～10mm；第二横向距离d2的取值范围为4mm～10mm；第一横向距离d1和第二横向距离d2的差值的取值范围为2mm～3mm。如果二者的差值太小则两侧的液流状态差异不大，如果差值太大，距离较大的一股液流可能会与预期射到包装侧壁上的落点位置偏离。另外，第一横向距离d1和第二横向距离d2的选择要考虑加工的要求，过小的话两侧的孔之间的壁厚太薄，不容易加工，通常壁厚不能小于2mm，对于6mm的孔的话，两孔之间的距离最小不小于8mm。
图9中，两个入口的设置方式、两个出口的设置方式、第一弯曲部311和第二弯曲部321的设置方式以及第一连接部312和第二连接部322的设置方式可参照前面实施例中的描述，此处不再赘述。
本公开前述任一实施例中，通道组件可以为多个。返回图3和图4，灌装头包括四个通道组件30，每个通道组件30的第一出口101和第二出口102构成一对灌装口，该对灌装口沿平行于端面210的第一横向方向X位于纵向 轴线MM的两侧。四对灌装口(即四个通道组件30)沿平行于端面210的第二横向方向Y排布，第二横向方向Y垂直于第一横向方向X。通过设置四个通道组件30，可以提高灌装速度，增加单位时间内的液体灌装量。
图3仅示出了包括四个通道组件的情况，可以理解的是，在其他实施例中，还可以设置两个、三个、或更多个通道组件，本领域技术人员可根据包装的体积和面积选择适合的通道组件的数量以及分布方式。
如图3所示，四个通道组件30在第二横向方向Y上等间距排布，由此可简化制造工艺。
本公开至少一实施例还提供一种灌装装置，包括前面任一实施例的灌装头。
本公开至少一实施例还提供一种利用前面任一实施例的灌装头的灌装方法。
上述本公开实施例提供的灌装方法中，通过使灌装头的两个出口的出液方向与纵向轴线之间的夹角不同和/或使两个出口与纵向轴线之间的横向间距不同，能够减少甚至避免灌装过程中液体在包装中形成液体飞溅或泡沫，从而降低污染灌装装置的风险。
例如，以图5为例，本公开实施例提供的利用图5的灌装头的灌装方法包括：
S100：提供包装40，其中包装40具有开口43和限定开口43的侧壁42，开口43配置为面向灌装头100的第一出口201和第二出口202，侧壁42具有用于灌装后封合开口43的压痕线41。例如，开口43设置在包装40的上端，当包装40的液体灌满后，可沿压痕线41折叠并且封合以将开口43密封。
S200：灌装流体到包装40中，其中流体经第一出口201和第二出口202形成两股射流进入开口43中，其中两股射流在压痕线41远离开口43的一侧与侧壁42接触。
本公开实施例中，灌装头的两个出口的出液方向的确定主要考虑灌装头与包装的空间位置及灌装头和包装的结构特征。通过使两股射流在压痕线41远离开口43的一侧与侧壁42接触，不仅可保证液流自灌装头下落到侧壁42上并顺流而下。还确保了液流没有落在压痕线(即后续用于封合开口)以上，从而避免影响到后续的封合过程，也没有直接落到包装的底面上，避免产生 较大的飞溅和泡沫。
如图3所示，例如，第一射流S1与侧壁42在第一接触区421接触，第二射流S2与侧壁42在第二接触区422接触，第一接触区421不同于第二接触区422，并且第一接触区421到开口43的垂直距离(即沿纵向轴线方向的距离)不等于第二接触区422到开口43的垂直距离(即沿纵向轴线方向的距离)。这样，可确保液流可分别顺着侧壁42的不同位置开始下流，最终在偏离底面中心的位置处交汇，由此改变两股射流碰撞后的方向，降低形成较大飞溅或泡沫的风险。
如图3所示，例如，包装40具有中轴线NN，在灌装流体到包装40中时，中轴线NN与纵向轴线MM基本平行，优选为相互重合。这样，更有利于在灌装过程中控制射流方向，使射流达到理想位置。本公开中的术语“基本平行”或“基本平行”可理解为大体上或大致上平行，允许存在工艺误差或偏差。
如前面实施例中的描述，灌装头100可具有多个通道组件，每个通道组件包括一对出口201、202。在灌装液体时，液体可通过多个通道组件的多个出口射到包装40中，从而提高灌装速度。
图10为根据本公开实施例提供的灌装头和包装在输送装置上的结构示意图。如图10所示，在灌装流体到图5的包装40中之前，上述灌装方法还可包括：
S300：沿输送方向V输送包装40至灌装头100下方，输送方向V与灌装头100的纵向轴线MM相互垂直。输送方向V例如与第一横向方向X平行。
本公开实施例中，包装40中的液体可以一次灌满，也可以分次灌装直到灌满。为了避免由于一次灌满时射流速度过高引起的液体飞溅，在实际生产中，大多采用分次灌装方式。
例如，如图10所示，输送装置400先将包装40沿输送方向V移动到灌装头100下方并短暂停留以进行第一次灌装。当液体灌装到包装50内的指定位置后，输送装置400再将包装40移动到下一个灌装头400，进行第二次灌装并将包装40灌满。
本公开实施例中，灌装头400可以具有与灌装头100相同或不同的构造。 由于第一次灌装时，包装40是空的，更容易引起液体飞溅或泡沫，所以本公开实施例提供的灌装头100优选在第一次灌装时采用。
图10中虚线框A为图5的灌装头100和包装40的简化俯视图，其中灌装头100包括四个通道组件，每个通道组件包括一对出口201、202。液体经过八个出口灌装到包装40中。当采用虚线框A中的方式进行灌装时，存在以下隐患：
由于输送装置400(例如传送带或传送链)需要在灌装头100下方进行短暂停留，传送带或传送链能够定位在灌装头100下方且尽量使灌装头100的纵向轴线MM与包装40的中轴线重合。然而，在长时间使用后，传送带或传送链会有机械损耗并在输送方向V上存在定位偏差，使灌装头100的纵向轴线MM偏离于包装40的中轴线较远，从而影响射流的喷射效果。
为解决以上隐患，本公开实施例中，将虚线框A中的灌装头100旋转90°，从而使多个通道组件的排布方向(即图10所示第一横向方向x)与输送方向V基本平行，这样，即使输送装置400在输送方向V上存在定位偏差，也能保证灌装头100的纵向轴线MM偏离于包装40的中轴线基本重合，不影响射流的喷射效果。
本公开实施例提供的灌装头不仅可以灌装如图5所示的底部为平面的包装，还可以灌装底部为非平面的包装。
图11为根据本公开另一实施例提供的包装的结构示意图。
如图11所示，包装50包括具有开口53和限定开口53的侧壁52，开口53配置为面向灌装头100的第一出口201和第二出口202，侧壁42具有用于灌装后封合开口53的压痕线51。
如图11所示，包装50还包括密封结构54，密封结构54与开口53相对设置。密封结构54包括与侧壁52连接的端部541，端部541的横截面逐渐缩小。密封结构54还包括与端部541接合的导流部件542和覆盖导流部件542的盖子543。本实施例中，通过将与侧壁52连接的端部541设置为具有逐渐缩小的横截面，可在倾倒液体(尤其是诸如酸奶的粘稠液体)时，避免液体堆积在侧壁52与端部541的连接处。
在采用现有灌装头灌装图11的包装50时，如果液流直接碰撞到端部541的四个倾斜侧壁，将引起剧烈的反弹，因此相比于图5的包装40，图11的 包装50更容易引起液体飞溅。
当采用本公开实施例的灌装头灌装包装50时，液体经至少第一出口201和第二出口202形成两股射流进入开口53中，两股射流在压痕线51远离开口53的一侧与侧壁52接触。这样，不仅可避免液流撞击到端部541的四个倾斜侧壁上使其沿侧壁52顺流而下，还确保了液流没有落在压痕线51以上，从而避免影响到后续的开口53的封合。
本公开实施例中，灌装到包装中的流体的液面至少与端部54与侧壁52的连接处54齐平，也就是，液面高度大于或等于连接处54。例如，灌装到包装中的流体的总量为包装总容量的80％以下，优选为50％以下。在一个示例中，当包装总容量为250ml时，第一次灌装的液体总量为80ml。
上述本公开实施例提供的灌装头及其灌装装置和灌装方法中，通过在灌装头上设置至少一个通道组件，并且使通道组件的两个出口的出液方向设置为与纵向轴线之间的夹角不同，和/或将两个出口与纵向轴线之间的横向间距设置为不同，能够减少甚至避免液体在包装中形成液体飞溅或泡沫，从而降低污染灌装装置的风险。相比于现有灌装头的两股射流在射入包装内后在包装底面的中心处交汇的情况，采用上述本公开实施例提供的灌装头可使第一射流和第二射流沿侧壁顺流而下到底面并且在偏离底面中心的位置处交汇，由此改变两股射流碰撞后的方向，降低形成较大飞溅或泡沫的风险。
本文中，有以下几点需要注意：
(1)本公开实施例附图只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(2)在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合以得到新的实施例。
以上所述仅是本公开的示范性实施方式，而非用于限制本公开的保护范围，本公开的保护范围由所附的权利要求确定。

Claims (16)

  1. 一种灌装头，其用于灌装流体，所述灌装头具有纵向轴线并且沿所述纵向轴线包括入口区域和出口区域，所述入口区域配置为使所述流体流入，所述出口区域配置为使所述流体离开；所述灌装头还包括：
    通道组件，连接所述入口区域和所述出口区域且配置为将所述流体从所述入口区域传送到所述出口区域，所述通道组件具有设置在出口区域的两个出口，所述流体经所述通道组件从所述两个出口射出，所述通道组件为弯曲的以使所述两个出口的两个出液方向呈发散状；
    其中，所述两个出液方向与所述纵向轴线之间的夹角不同，和/或所述两个出口与所述纵向轴线之间的横向间距不同。
  2. 根据权利要求1所述的灌装头，其中：
    所述两个出口包括第一出口和第二出口；
    所述通道组件包括第一导管和第二导管；
    所述第一导管包括与所述第一出口连接的第一弯曲部，所述第一弯曲部的中心轴线以第一倾斜角度相对所述纵向轴线倾斜；
    所述第二导管包括与所述第二出口连接的第二弯曲部，所述第二弯曲部的中心轴线以第二倾斜角度相对所述纵向轴线倾斜；
    其中，所述第一倾斜角度和所述第二倾斜角度不同。
  3. 根据权利要求2所述的灌装头，其中：
    所述第一倾斜角度的取值范围为15度至25度；
    所述第二倾斜角度的取值范围为15度至25度；
    所述第一倾斜角度和所述第二倾斜角度之间的差值的取值范围为2度至5度。
  4. 根据权利要求2所述的灌装头，其中：
    所述灌装头还包括垂直于所述纵向轴线的端面，所述第一出口和所述第二出口位于所述端面上；
    所述第一出口和所述第二出口沿平行于所述端面的第一横向方向位于所述纵向轴线的两侧，并且所述两个出液方向位于平行于所述纵向轴线且垂直于所述端面的同一纵向平面内。
  5. 根据权利要求4所述的灌装头，其中：
    所述第一弯曲部和所述第二弯曲部沿所述第一横向方向位于所述纵向轴线的两侧，并且所述第一弯曲部的中心轴线和所述第二弯曲部的中心轴线位于所述同一纵向平面内。
  6. 根据权利要求1至5任一项所述的灌装头，其中：
    所述两个出口包括第一出口和第二出口；
    所述通道组件还包括：
    位于所述入口区域的第一入口和第二入口；
    第一导管，连接所述第一入口和所述第一出口，所述第一导管与所述纵向轴线之间具有第一横向距离；
    第二导管，连接所述第二入口和所述第二出口，所述第二导管与所述纵向轴线之间具有第二横向距离；
    其中，所述第一横向距离和所述第二横向距离不同。
  7. 根据权利要求6所述的灌装头，其中：
    所述灌装头还包括垂直于所述纵向轴线的端面，所述第一出口和所述第二出口位于所述端面上；
    所述第一导管和所述第二导管沿平行于所述端面的第一横向方向位于所述纵向轴线的两侧，所述第一横向距离和所述第二横向距离均沿所述第一横向方向。
  8. 根据权利要求7所述的灌装头，其中：
    所述第一导管包括与所述第一出口连接的第一弯曲部和与所述第一弯曲部连接的第一连接部；
    所述第二导管包括与所述第二出口连接的第二弯曲部和与所述第二弯曲部连接的第二连接部；
    所述第一连接部和所述第二连接部沿平行于所述纵向轴线方向延伸，并且沿所述第一横向方向位于所述纵向轴线的两侧。
  9. 根据权利要求8所述的灌装头，其中：
    所述第一横向距离为所述第一连接部与所述纵向轴线之间沿所述第一横向方向的距离，所述第一横向距离的取值范围为4mm～10mm；
    第二横向距离为所述第二连接部与所述纵向轴线之间沿所述第一横向方 向的距离，所述第二横向距离的取值范围为4mm～10mm；
    所述第一横向距离和所述第二横向距离的差值的取值范围为2mm～3mm。
  10. 一种灌装装置，包括权利要求1至9任一项所述的灌装头。
  11. 一种采用权利要求1至9任一项所述的灌装头的灌装方法。
  12. 根据权利要求11所述的灌装方法，包括：
    提供待灌装的包装，其中所述包装具有开口和限定所述开口的侧壁，所述开口配置为面向所述灌装头的两个出口，所述侧壁具有用于灌装后封合所述开口的压痕线；
    灌装所述流体到所述包装中，其中所述流体经所述两个出口形成两股射流进入所述开口中；
    其中，所述两股射流在所述压痕线远离所述开口的一侧与所述侧壁接触。
  13. 根据权利要求12所述的灌装方法，其中：
    所述两股射流包括第一射流和第二射流，所述第一射流与所述侧壁在第一接触区接触，所述第二射流与所述侧壁在第二接触区接触；
    所述第一接触区不同于所述第二接触区，并且所述第一接触区和所述开口之间沿所述纵向轴线方向的距离不等于所述第二接触区和所述开口之间沿所述纵向轴线方向的距离。
  14. 根据权利要求13所述的灌装方法，其中所述包装具有中轴线，在灌装所述流体到所述包装中时，所述中轴线基本平行于所述灌装头的纵向轴线。
  15. 根据权利要求13所述的灌装方法，其中在灌装所述流体到所述包装中之前，所述灌装方法还包括：
    沿输送方向输送所述包装至所述灌装头下方，所述输送方向与所述灌装头的纵向轴线相互垂直；所述通道组件为多个，多个所述通道组件的排布方向与所述输送方向基本平行。
  16. 根据权利要求15所述的灌装方法，其中，所述包装包括：
    密封结构，所述密封结构与所述开口相对设置并且包括与所述侧壁连接的端部，所述端部的横截面逐渐缩小；
    其中，灌装到所述包装中的流体的液面等于或高于所述端部与所述侧壁的连接处。
PCT/CN2023/086753 2022-04-07 2023-04-07 灌装头及其灌装装置和灌装方法 WO2023193776A1 (zh)

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