Foam-removing filling device and filling process

Abstract

The invention relates to the technical field of liquid filling, in particular to a foam-removing filling device and a foam-removing filling process, and the foam-removing filling device comprises a first insertion pipe, a second insertion pipe and a liquid injection pipe; the first insertion tube and the second insertion tube are sleeved with the elastic sealing sleeve, and a bottom opening of the elastic sealing sleeve is used for pressing and sealing the opening portion of the bottle body; the expansion structure is positioned between the first intubation tube and the second intubation tube and is used for expanding the distance between the first intubation tube and the second intubation tube to enable the elastic sealing sleeve to expand until the outline of the bottom opening is matched with the outline of the opening part of the bottle body; the sealing cover is located above the elastic sealing sleeve and used for pressing and sealing a top opening of the elastic sealing sleeve; the pressing mechanism is connected to the sealing cover and used for driving the sealing cover to move in the axial direction of the bottle body, so that the first insertion pipe, the second insertion pipe and the liquid injection pipe are inserted into the bottle body or separated from the bottle body. According to the technical scheme, the equipment cost and the maintenance cost are reduced, and it can be completely guaranteed that air pressure in all bottle bodies reaches the standard before filling.

Description

Technical Field

[0001] The invention relates to the technical field of liquid filling, in particular to a foam removal filling device and a filling process. Background Art

[0002] Liquid filling is common in the production of various products, such as filling of liquid condiments (soy sauce, vinegar), filling of alcoholic beverages, filling of liquid cosmetics (perfumes, toiletries), etc. Due to factors such as the composition of the liquid being filled, the mixing of liquid and air during filling, and the structure of the inner wall of the bottle, foam is often generated during liquid filling. When the amount of foam is large, the filling volume may not meet the requirements and the foam may overflow from the bottle mouth, making it impossible to continue filling.

[0003] At present, in order to reduce the generation of foam during filling, one method is to evacuate the bottle body, and the other method is to fill the bottle body with a protective gas (such as nitrogen) to replace the air; however, both methods are currently performed on a single bottle body, and each vacuum pipe or filling pipe of the bottle body to be filled must be equipped with an air pressure sensor and a solenoid valve, which increases the equipment cost on the one hand, and on the other hand, if dozens or hundreds of bottles are filled at one time, the failure rate of a large number of air pressure sensors and solenoid valves increases, which can neither 100% guarantee that the air pressure of all bottles meets the standard, nor increase the maintenance cost. Summary of the invention

[0004] In view of this, the present invention provides a foam removal filling device to solve the problems of high equipment cost and high maintenance cost in the prior art and failure to 100% ensure that the air pressure of all bottles meets the standard.

[0005] The present invention provides a foam removal filling device, comprising:

[0006] A first cannula is inserted into the mouth of the bottle during filling and is removed from the bottle after filling. The first cannula on the first bottle in a row of bottles is used to connect a vacuum pumping device or a nitrogen filling device;

[0007] The second insert tube is inserted into the mouth of the bottle during filling and is separated from the bottle after filling is completed. The second insert tube is used to connect the first insert tube on the adjacent bottle. The second insert tube connects the inner cavity of a row of bottles in series. The second insert tube on the last bottle in a row is closed.

[0008] An elastic sealing sleeve, which is sleeved outside the first inserting tube and the second inserting tube, and the bottom opening of the elastic sealing sleeve is used to compress and seal the mouth of the bottle body;

[0009] An expansion structure, located between the first insert tube and the second insert tube, used to expand the distance between the first insert tube and the second insert tube so that the elastic sealing sleeve expands until the contour of the bottom opening matches the contour of the mouth of the bottle body;

[0010] A liquid injection tube, which passes through the elastic sealing sleeve and the first inserting tube, one end of which is located outside the elastic sealing sleeve and connected to the liquid injection device, and the other end of which extends into the bottle body through the first inserting tube;

[0011] A sealing cover, located above the elastic sealing sleeve, and used for pressing and sealing the top opening of the elastic sealing sleeve;

[0012] The clamping mechanism is connected to the sealing cover and is used to drive the sealing cover to move axially along the bottle body so that the first insertion tube, the second insertion tube and the injection tube are inserted into or separated from the bottle body.

[0013] Optionally, the first insert tube and the second insert tube are symmetrically arranged about the central axis of the bottle body, and there is a gap between the first insert tube and the second insert tube, and the expansion structure is arranged in the gap.

[0014] Optionally, the expansion structure includes an electromagnet and a permanent magnet arranged opposite to each other, the electromagnet is fixed on the first cannula, and the permanent magnet is fixed on the second cannula. The electromagnet repels or attracts the permanent magnet by changing its magnetic poles. When attracted, the first cannula and the second cannula are inserted into the mouth of the bottle body, and when repelled, the elastic sealing sleeve is expanded; the wire of the electromagnet passes through the sealing cover to connect to the power supply and the controller.

[0015] Optionally, the expansion structure includes an air bag and an air tube, the air bag is located between the first cannula and the second cannula, one end of the air tube is connected to the air bag, and the other end passes through the sealing cover to connect to the air supply device.

[0016] Optionally, the outer side wall profiles of the first cannula and the second cannula are D-shaped, and the opposite sides of the first cannula and the second cannula are in contact with the inner wall of the elastic sealing sleeve.

[0017] Optionally, a first transfer tube and a second transfer tube are fixed on the sealing cover, the first transfer tube and the second transfer tube both pass through the upper and lower sides of the sealing cover, the first transfer tube is connected to a vacuum pumping device or a nitrogen filling device through a hose, the second transfer tube is connected to the first insertion tube on an adjacent bottle body through a hose, the first transfer tube is inserted into the first insertion tube and has an insertion gap, the second transfer tube is inserted into the second insertion tube and has an insertion gap; sealing gaskets are circumferentially arranged at the top ends of the first insertion tube and the second insertion tube, and the sealing cover is used to compress and seal the sealing gasket while compressing and sealing the top opening of the elastic sealing sleeve.

[0018] Optionally, the side walls of the first cannula and the second cannula are provided with arcuate grooves extending in the circumferential direction, and elastic rings are provided in the arcuate grooves, and the elastic rings tighten the first cannula and the second cannula.

[0019] Optionally, a connecting rope is connected between the first cannula and the sealing cover and / or between the second cannula and the sealing cover, and the connecting rope is used to keep the first cannula, the second cannula and the sealing cover moving vertically synchronously, and to keep the first transfer tube inserted in the first cannula and the second transfer tube inserted in the second cannula during the vertical movement, and the length of the connecting rope allows the first cannula and the second cannula to move laterally relative to the sealing cover.

[0020] Optionally, an electric valve is provided in the second transfer tube on the last bottle body in a row of bottles.

[0021] Another object of the present invention is to provide a filling process. According to the above-mentioned defoaming filling device, the filling steps are as follows:

[0022] The first step is to fix a row of bottles, and to arrange a foam removal and filling device directly above each bottle;

[0023] The second step is to connect the first cannula on the first bottle body to a vacuum pumping device or a nitrogen filling device through a hose, and connect all the bottles in series by connecting the second cannula to the first cannula through a hose;

[0024] The third step is to start the clamping mechanism to drive the sealing cover to move downward along the axial direction of the bottle body, and the sealing cover moves downward by hanging the first and second insertion tubes through the connecting rope, so that the first and second insertion tubes are inserted into the mouth of the bottle body, and the clamping mechanism is stopped when the bottom of the elastic sealing sleeve reaches the top of the bottle body;

[0025] Step 4: activating the expansion structure to increase the distance between the first cannula and the second cannula, so that the elastic sealing sleeve expands into a cylindrical shape with a bottom diameter equal to the diameter of the mouth of the bottle body;

[0026] Step 5, continue to move the sealing cover downward through the pressing mechanism, so that the sealing cover presses and seals the top opening of the elastic sealing sleeve and the sealing gasket, and at the same time, the bottom opening of the elastic sealing sleeve presses and seals the mouth of the bottle body;

[0027] Step 6: When performing the vacuuming operation, first close the second cannula on the last bottle in a row of bottles, then start the vacuuming device, and the vacuuming time is determined according to the number of bottles; when performing the nitrogen filling operation, first start the nitrogen filling device, and the filling time is determined according to the number of bottles, and after the time is up, close the second cannula on the last bottle in a row of bottles;

[0028] Step 7: Start the liquid injection device to inject a certain amount of liquid into all bottles through the liquid injection pipe at the same time;

[0029] Step 8: shut down the expansion structure to reduce the distance between the first insert tube and the second insert tube, so that a gap is formed between the first insert tube and the inner wall of the bottle body, and between the second insert tube and the inner wall of the bottle body;

[0030] In the ninth step, the sealing cover is moved upward by the clamping mechanism, and the sealing cover suspends the first insert tube, the second insert tube and the injection tube from the bottle body.

[0031] The technical solution of the present invention has the following advantages:

[0032] 1. The bottle mouth can be sealed after being inserted into the bottle mouth, and the inner cavities of multiple bottles can be connected in series. The air pressure in the inner cavities of all bottles can be guaranteed to be the same by evacuating or filling the first bottle with nitrogen. Only one air pressure sensor and one solenoid valve are needed to 100% guarantee that the air pressure of all bottles meets the standard. The cost is extremely low. Even if the air pressure sensor and solenoid valve fail, they can be quickly replaced, and the maintenance cost (including time cost) is extremely low.

[0033] 2. The first cannula, the second cannula, the injection tube, the sealing cover and the elastic sealing sleeve can move as a whole, which facilitates the overall rapid movement to the bottle mouth for sealing, and also facilitates the overall rapid departure from the bottle after filling is completed, thereby achieving rapid filling and rapid release of the bottle after filling is completed.

[0034] 3. The sealing gasket is the first seal for the top opening of the first cannula and the top opening of the second cannula, and the elastic sealing sleeve is the second seal. The double sealing structure ensures the stability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a top view of the foam removal and filling device in the embodiment;

[0037] Figure 2 yes Figure 1 AA direction cross-sectional view;

[0038] Figure 3 yes Figure 2 A magnified view of part A;

[0039] Figure 4 is a partial exploded view of the foam removal filling device in the embodiment;

[0040] Figure 5 It is a partial structural schematic diagram of the foam removal filling device in the embodiment.

[0041] In the figure:

[0042] The first insert tube 1, the second insert tube 2, the injection tube 3, the liquid outlet 31, the elastic sealing sleeve 4, the expansion structure 5, the electromagnet 51, the permanent magnet 52, the sealing cover 6, the clamping mechanism 7, the first transfer tube 8, the second transfer tube 9, the sealing gasket 10, the elastic ring 11, the connecting rope 12, and the electric valve 13. DETAILED DESCRIPTION

[0043] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0045] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0046] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0047] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0048] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a defoaming filling device, which mainly includes a first insert tube 1, a second insert tube 2, an elastic sealing sleeve 4, a sealing cover 6, an expansion structure 5 and a pressing mechanism 7.

[0049] A defoaming filling device is arranged just above each bottle body at the filling station, and the defoaming filling devices above adjacent bottles are connected through a hose to realize the series connection of all the bottles.

[0050] Please refer to Figure 2 and Figure 3 The first cannula 1 is inserted into the mouth of the bottle during filling and is separated from the bottle after filling. The first cannula 1 on the first bottle in a row of bottles is used to connect a vacuum pumping device or a nitrogen filling device. The air pressure sensor and the solenoid valve are arranged on the first cannula 1 connected to the vacuum pumping device or the nitrogen filling device.

[0051] The second insert tube 2 is inserted into the mouth of the bottle during filling, and is separated from the bottle after filling is completed. It is used to connect the first insert tube 1 on the adjacent bottle. The second insert tube 2 is connected in series with the inner cavity of a row of bottles, and the second insert tube 2 on the last bottle in a row is closed. Preferably, an electric valve 13 is directly or indirectly arranged on the second insert tube 2 on the last bottle in a row to realize automatic opening or automatic closing of the second insert tube 2 on the last bottle.

[0052] The elastic sealing sleeve 4 is sleeved outside the first inserting tube 1 and the second inserting tube 2 and is located outside the bottle body. The bottom opening of the elastic sealing sleeve 4 is used for pressing and sealing the mouth of the bottle body.

[0053] The expansion structure 5 is located between the first insertion tube 1 and the second insertion tube 2, and is used to expand the distance between the first insertion tube 1 and the second insertion tube 2 so that the elastic sealing sleeve 4 expands until the contour of the bottom opening matches the contour of the mouth of the bottle body.

[0054] The liquid injection tube 3 passes through the elastic sealing sleeve 4 and the first inserting tube 1, one end of which is located outside the elastic sealing sleeve 4 and connected to the liquid injection device, and the other end of which extends into the bottle body through the first inserting tube 1. The bottom end of the liquid injection tube 3 is closed, and the side wall of the liquid injection tube 3 near the bottom end is provided with a plurality of liquid outlet holes 31 along the circumferential direction, and the liquid outlet holes 31 are communicated with the inner cavity of the liquid injection tube 3; this design can avoid a large amount of liquid impacting the bottom of the bottle and generating foam, and divide the liquid into a plurality of small streams and discharge them from the liquid outlet holes 31 on the side of the liquid injection tube 3. When the small streams of liquid are ejected onto the inner wall of the bottle, they spread out and flow to the bottom of the bottle along the side wall of the bottle. This process is difficult to generate foam, and the areas where the multiple streams of liquid are spread out do not overlap or the overlapping area is small, thereby avoiding mutual collision to generate foam.

[0055] The sealing cover 6 is located above the elastic sealing sleeve 4 and is used for pressing and sealing the top opening of the elastic sealing sleeve 4 .

[0056] The clamping mechanism 7 is connected to the sealing cover 6 and is used to drive the sealing cover 6 to move along the axial direction of the bottle body so that the first insertion tube 1, the second insertion tube 2 and the injection tube 3 are inserted into or separated from the bottle body. The clamping mechanism 7 can be in the form of a cylinder or other actuator to drive a pressing block, and the pressing block is fixed to the upper surface of the sealing cover 6.

[0057] The working principle of the above-mentioned defoaming filling device is:

[0058] After the first cannula 1, the second cannula 2 and the injection tube 3 are inserted into the bottle body, the expansion structure 5 is used to increase the distance between the first cannula 1 and the second cannula 2 so as to expand the elastic sealing sleeve 4 to a size comparable to that of the bottle mouth, and then the sealing cover 6 is pressed down by the pressing mechanism 7 so that the top of the elastic sealing sleeve 4 is pressed and sealed by the sealing cover 6, and the bottle mouth is pressed and sealed by the bottom of the elastic sealing sleeve 4. The second cannula 2 on the last bottle body is first closed and then the vacuum pumping device is started to vacuum all the bottles at once, or the nitrogen filling device is first started to fill all the bottles with nitrogen at once and then the second cannula 2 on the last bottle body is closed, and finally liquid is injected into the bottle body through the injection tube 3, so as to avoid the liquid and air mixing to generate foam.

[0059] During the above-mentioned vacuuming operation and nitrogen filling operation, the operation sequence of "closing the second cannula 2 on the last bottle body" is different, because all the bottles must be closed before vacuuming, and before nitrogen filling, the last bottle must be opened so that the air in all the bottles can be discharged from the last bottle body during nitrogen filling, and after the air is emptied, the last bottle body is closed while keeping the nitrogen filling state.

[0060] Furthermore, the first insertion tube 1 and the second insertion tube 2 are symmetrically arranged about the central axis of the bottle body, and there is a gap between the first insertion tube 1 and the second insertion tube 2, and an expansion structure 5 is arranged in the gap; the structure of the expansion structure 5 is not limited, as long as it can achieve the control of the first insertion tube 1 and the second insertion tube 2 to move away from each other and approach each other. Two forms of the expansion structure 5 are exemplified below.

[0061] The first form of the expansion structure 5: the expansion structure 5 comprises an electromagnet 51 and a permanent magnet 52 which are arranged opposite to each other. The electromagnet 51 is fixed on the first insertion tube 1, and the permanent magnet 52 is fixed on the second insertion tube 2. The electromagnet 51 repels or attracts the permanent magnet 52 by changing the magnetic poles. When the first insertion tube 1 and the second insertion tube 2 are attracted, the elastic sealing sleeve 4 is expanded when the first insertion tube 1 and the second insertion tube 2 are inserted into the mouth of the bottle body. When the first insertion tube 1 and the second insertion tube 2 are repelled, the elastic sealing sleeve 4 is expanded. The wire of the electromagnet 51 passes through the sealing cover 6 to connect the power supply and the controller. The fixed positions of the electromagnet 51 and the permanent magnet 52 can be interchanged, and the permanent magnet 52 can also be replaced by the second electromagnet, and the function is realized by controlling the polarity of the two electromagnets at the same time.

[0062] The second form of the expansion structure 5: the expansion structure 5 includes an air bag and an air tube, the air bag is located between the first cannula 1 and the second cannula 2, one end of the air tube is connected to the air bag, and the other end of the air tube is connected to the air supply device through the sealing cover 6. The air supply device uses a compressed air tank and an air valve to achieve inflation and deflation of the air bag.

[0063] For further information, please refer to Figures 2 to 4The outer wall profiles of the first cannula 1 and the second cannula 2 are D-shaped, and the opposite sides of the first cannula 1 and the second cannula 2 are in contact with the inner wall of the elastic sealing sleeve 4; the first transfer tube 8 and the second transfer tube 9 are fixed on the sealing cover 6, and the first transfer tube 8 and the second transfer tube 9 both pass through the upper and lower sides of the sealing cover 6. The first transfer tube 8 is connected to the vacuum pumping equipment or the nitrogen filling equipment through a hose, and the second transfer tube 9 is connected to the first cannula 1 on the adjacent bottle body through a hose. The first transfer tube 8 is inserted into the first cannula 1 and has a plug-in gap, and the second transfer tube 9 is inserted into the second cannula 2 and has a plug-in gap. The plug-in gap enables the first transfer tube 8 and the second transfer tube 9 to move laterally relative to the sealing cover 6; the top ends of the first cannula 1 and the second cannula 2 are both circumferentially provided with sealing gaskets 10, and the sealing cover 6 is used to press the top opening of the sealing elastic sealing sleeve 4 while pressing the sealing gasket 10.

[0064] For further information, please refer to Figure 2 , Figure 3 and Figure 5 The side walls of the first cannula 1 and the second cannula 2 are provided with an arc groove extending in the circumferential direction, and an elastic ring 11 is provided in the arc groove, and the elastic ring 11 tightens the first cannula 1 and the second cannula 2; a connecting rope 12 is connected between the first cannula 1 and the sealing cover 6 and / or between the second cannula 2 and the sealing cover 6 (see Figure 3 ), the connecting rope 12 is used to keep the first cannula 1, the second cannula 2 and the sealing cover 6 moving vertically synchronously, and to keep the first transfer tube 8 inserted in the first cannula 1, and to keep the second transfer tube 9 inserted in the second cannula 2 during the vertical movement, and the length of the connecting rope 12 allows the first cannula 1 and the second cannula 2 to move laterally relative to the sealing cover 6.

[0065] Please refer to Figure 5 The elastic ring 11 binds the first cannula 1 and the second cannula 2 so that the first cannula 1 and the second cannula 2 are always at the same height. After the first cannula 1 and the second cannula 2 are bound as a whole, the number of connecting ropes 12 can be reduced, and only one connecting rope 12 is needed to realize the function.

[0066] Please refer to Figure 2 In summary, the defoaming filling device described above, the embodiment of the present invention further provides a defoaming filling process, the filling steps are as follows:

[0067] The first step is to fix a row of bottles, and set a foam removal and filling device directly above each bottle;

[0068] The second step is to connect the first cannula 1 on the first bottle body to a vacuum pumping device or a nitrogen filling device through a hose, and connect all the bottles in series by connecting the second cannula 2 to the first cannula 1 through a hose;

[0069] The third step is to start the clamping mechanism 7, drive the sealing cover 6 to move downward along the axial direction of the bottle body, and the sealing cover 6 moves downward by hanging the first inserting tube 1 and the second inserting tube 2 through the connecting rope 12, so that the first inserting tube 1 and the second inserting tube 2 are inserted into the mouth of the bottle body, and the clamping mechanism 7 is stopped when the bottom of the elastic sealing sleeve 4 reaches the top of the bottle body;

[0070] Step 4: Start the expansion structure 5 to increase the distance between the first inserting tube 1 and the second inserting tube 2, so that the elastic sealing sleeve 4 expands into a cylindrical shape with a bottom diameter equal to the diameter of the mouth of the bottle body;

[0071] Step 5: Continue to move the sealing cover 6 downward through the pressing mechanism 7, so that the sealing cover 6 presses and seals the top opening of the elastic sealing sleeve 4 and the sealing gasket 10, and at the same time, the bottom opening of the elastic sealing sleeve 4 presses and seals the mouth of the bottle body;

[0072] Step 6: When performing the vacuum operation, first close the second cannula 2 on the last bottle in a row of bottles, then start the vacuum equipment, and the vacuuming time is determined according to the number of bottles; when performing the nitrogen filling operation, first start the nitrogen filling equipment, and the filling time is determined according to the number of bottles. After the time is up, close the second cannula 2 on the last bottle in a row of bottles;

[0073] Step 7: Start the liquid injection device to inject a certain amount of liquid into all bottles through the liquid injection pipe 3 at the same time;

[0074] Step 8: shut down the expansion structure 5 to reduce the distance between the first insert tube 1 and the second insert tube 2, so that a gap is formed between the first insert tube 1 and the inner wall of the bottle body, and between the second insert tube 2 and the inner wall of the bottle body, so that the first insert tube 1 and the second insert tube 2 can be removed from the bottle mouth;

[0075] In the ninth step, the sealing cover 6 is moved upward by the pressing mechanism 7, and the sealing cover 6 hangs the first insertion tube 1, the second insertion tube 2 and the injection tube 3 away from the bottle body.

[0076] After filling is completed, the bottle is released for the subsequent capping process.

[0077] The foam-removing filling device proposed in the embodiment of the present invention can seal the bottle mouth after being inserted into the bottle mouth, and connect the inner cavities of multiple bottle bodies in series. The first bottle body is vacuumed or filled with nitrogen to ensure that the air pressure in the cavities of all bottle bodies is the same. Only one air pressure sensor and one solenoid valve need to be set to 100% ensure that the air pressure of all bottles meets the standard. The cost is extremely low. Even if the air pressure sensor and the solenoid valve fail, they can be quickly replaced, and the maintenance cost (including time cost) is extremely low.

[0078] The first insert tube 1, the second insert tube 2, the injection tube 3, the sealing cover 6 and the elastic sealing sleeve 4 can move as a whole, which is convenient for the whole to quickly move to the bottle mouth for sealing, and also convenient for the whole to quickly leave the bottle after filling, thereby realizing rapid filling and rapid release of the bottle after filling.

[0079] The sealing gasket 10 is the first seal for the top opening of the first inserting tube 1 and the top opening of the second inserting tube 2, and the elastic sealing sleeve 4 is the second seal. The double sealing structure ensures the stability of the seal.

[0080] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A foam removal filling device, characterized in that: include: A first cannula is inserted into the mouth of the bottle during filling and is removed from the bottle after filling. The first cannula on the first bottle in a row of bottles is used to connect a vacuum pumping device or a nitrogen filling device; The second insert tube is inserted into the mouth of the bottle during filling and is separated from the bottle after filling is completed. The second insert tube is used to connect the first insert tube on the adjacent bottle. The second insert tube connects the inner cavity of a row of bottles in series. The second insert tube on the last bottle in a row is closed. An elastic sealing sleeve, which is sleeved outside the first inserting tube and the second inserting tube, and the bottom opening of the elastic sealing sleeve is used to compress and seal the mouth of the bottle body; An expansion structure, located between the first insert tube and the second insert tube, used to expand the distance between the first insert tube and the second insert tube so that the elastic sealing sleeve expands until the contour of the bottom opening matches the contour of the mouth of the bottle body; A liquid injection tube, which passes through the elastic sealing sleeve and the first inserting tube, one end of which is located outside the elastic sealing sleeve and connected to the liquid injection device, and the other end of which extends into the bottle body through the first inserting tube; A sealing cover, located above the elastic sealing sleeve, and used for pressing and sealing the top opening of the elastic sealing sleeve; The clamping mechanism is connected to the sealing cover and is used to drive the sealing cover to move axially along the bottle body so that the first insertion tube, the second insertion tube and the injection tube are inserted into or separated from the bottle body.

2. The defoaming filling device according to claim 1, characterized in that: The first insert tube and the second insert tube are symmetrically arranged about the central axis of the bottle body, and there is a gap between the first insert tube and the second insert tube, and the expansion structure is arranged in the gap.

3. The defoaming filling device according to claim 2, characterized in that: The expansion structure includes an electromagnet and a permanent magnet arranged opposite to each other. The electromagnet is fixed on the first insertion tube, and the permanent magnet is fixed on the second insertion tube. The electromagnet repels or attracts the permanent magnet by changing the magnetic poles. When the first insertion tube and the second insertion tube are attracted, the first insertion tube and the second insertion tube are inserted into the mouth of the bottle body, and when the first insertion tube and the second insertion tube are repelled, the elastic sealing sleeve is expanded. The wire of the electromagnet passes through the sealing cover to connect the power supply and the controller.

4. The defoaming filling device according to claim 2, characterized in that: The expansion structure comprises an air bag and an air tube, wherein the air bag is located between the first cannula and the second cannula, one end of the air tube is connected to the air bag, and the other end of the air tube passes through the sealing cover and is connected to the air supply device.

5. The defoaming filling device according to claim 3 or 4, characterized in that: The outer wall profiles of the first cannula and the second cannula are D-shaped, and the opposite sides of the first cannula and the second cannula are in contact with the inner wall of the elastic sealing sleeve.

6. The defoaming filling device according to claim 5, characterized in that: The sealing cover is fixed with a first transfer tube and a second transfer tube, both of which pass through the upper and lower sides of the sealing cover, the first transfer tube is connected to a vacuum pumping device or a nitrogen filling device through a hose, the second transfer tube is connected to the first insertion tube on the adjacent bottle body through a hose, the first transfer tube is inserted into the first insertion tube and has an insertion gap, the second transfer tube is inserted into the second insertion tube and has an insertion gap; sealing gaskets are circumferentially arranged at the top ends of the first insertion tube and the second insertion tube, and the sealing cover is used to compress and seal the sealing gasket while compressing and sealing the top opening of the elastic sealing sleeve.

7. The defoaming filling device according to claim 6, characterized in that: The side walls of the first cannula and the second cannula are provided with arc grooves extending in the circumferential direction, and elastic rings are provided in the arc grooves, and the elastic rings tighten the first cannula and the second cannula.

8. The defoaming filling device according to claim 7, characterized in that: A connecting rope is connected between the first cannula and the sealing cover and / or between the second cannula and the sealing cover, and the connecting rope is used to keep the first cannula, the second cannula and the sealing cover moving vertically synchronously, and to keep the first transfer tube inserted in the first cannula and the second transfer tube inserted in the second cannula during the vertical movement, and the length of the connecting rope allows the first cannula and the second cannula to move laterally relative to the sealing cover.

9. The defoaming filling device according to any one of claims 1 to 8, characterized in that: An electric valve is arranged in the second transfer tube on the last bottle in a row of bottles.

10. A filling process, according to the defoaming filling device of claim 9, characterized in that: The filling steps are as follows: The first step is to fix a row of bottles, and to arrange a foam removal and filling device directly above each bottle; The second step is to connect the first cannula on the first bottle body to a vacuum pumping device or a nitrogen filling device through a hose, and connect all the bottles in series by connecting the second cannula to the first cannula through a hose; The third step is to start the clamping mechanism to drive the sealing cover to move downward along the axial direction of the bottle body, and the sealing cover moves downward by hanging the first and second insertion tubes through the connecting rope, so that the first and second insertion tubes are inserted into the mouth of the bottle body, and the clamping mechanism is stopped when the bottom of the elastic sealing sleeve reaches the top of the bottle body; Step 4: activating the expansion structure to increase the distance between the first cannula and the second cannula, so that the elastic sealing sleeve expands into a cylindrical shape with a bottom diameter equal to the diameter of the mouth of the bottle body; Step 5, continue to move the sealing cover downward through the pressing mechanism, so that the sealing cover presses and seals the top opening of the elastic sealing sleeve and the sealing gasket, and at the same time, the bottom opening of the elastic sealing sleeve presses and seals the mouth of the bottle body; Step 6: When performing the vacuuming operation, first close the second cannula on the last bottle in a row of bottles, then start the vacuuming device, and the vacuuming time is determined according to the number of bottles; when performing the nitrogen filling operation, first start the nitrogen filling device, and the filling time is determined according to the number of bottles, and after the time is up, close the second cannula on the last bottle in a row of bottles; Step 7: Start the liquid injection device to inject a certain amount of liquid into all bottles through the liquid injection pipe at the same time; Step 8: shut down the expansion structure to reduce the distance between the first insert tube and the second insert tube, so that a gap is formed between the first insert tube and the inner wall of the bottle body, and between the second insert tube and the inner wall of the bottle body; In the ninth step, the sealing cover is moved upward by the clamping mechanism, and the sealing cover suspends the first insert tube, the second insert tube and the injection tube from the bottle body.

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