Filling device and bubble-free filling method and application thereof

Abstract

The invention discloses a filling device and a bubble-free filling method and application thereof. The filling device comprises a filling head, a valve, a connecting piece and a buoyancy mechanism; a filling opening is formed in one end of the filling head; the valve is provided with an extending part, the valve is movably arranged at the filling opening, and when the valve moves to abut against the filling opening, the extending part extends out of the filling opening; the buoyancy mechanism is movably limited to the outer side of the filling head, and the extending part is connected with the buoyancy mechanism through a connecting piece. According to the scheme, the problem that bubbles are difficult to treat due to the fact that the feeding speed of existing filling equipment is too high is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filling device, in particular to a filling device and its bubble-free filling method and use. BACKGROUND

[0002] With the development of the breeding industry, adding complex vitamins in daily feeding can not only meet the needs of the rapid growth of livestock and poultry, but also is a common means to enhance the body's stress resistance and disease resistance, improve daily weight gain and feed conversion efficiency. Adding in drinking water is an efficient and convenient method. Generally speaking, complex vitamin powder can meet the needs of mixed feeding, but it may not be convenient for drinking water addition due to solubility problems; microemulsion complex vitamin makes up for this deficiency and can be conveniently applied to drinking water addition; microemulsion is a complex heterogeneous system composed of oil phase, water phase, emulsifier and co-emulsifier, which has properties close to solution due to its nanoscale dispersion degree; due to its composition characteristics, microemulsion usually contains more emulsifier components, so it is easy to produce foam; for vitamin microemulsion products, the composition is usually sensitive to oxygen, so reducing the influence of oxygen is the key to improving stability: on the one hand, oxygen should be isolated as much as possible during preparation, and on the other hand, full filling process is used during filling to reduce the oxygen content, which is an effective way to extend the shelf life; in the current automatic production line, filling is usually completed by equipment, and the filling head usually operates by penetrating into the bottle body. The flow rate is fast and the impact is large at the initial stage of filling, which is easy to produce foam and fill the upper space of the bottle, affecting the full filling effect, and the foam dissipates slowly, so it is obviously unrealistic to wait for it to completely dissipate before filling. If the liquid is directly filled to the bottle opening and the foam is discharged, the foam may contaminate the outer surface of the bottle, affecting the subsequent labeling operation, and the contaminated liquid needs to be cleaned, which increases the new process flow and causes liquid loss. SUMMARY

[0003] The purpose of the present application is to provide a filling device which can fill the container with liquid and avoid the generation of bubbles by penetrating the filling head into the container and inputting liquid into the inside of the filling head, and the valve, connecting piece and buoyancy mechanism can adjust the filling port according to the liquid level.

[0004] The present application also provides a bubble-free filling method of a filling device.

[0005] The present application also provides a use of a filling device in feed preparation.

[0006] To achieve this purpose, the present application adopts the following technical solutions: A filling device, comprising: a filling head, a valve, a connecting piece and a buoyancy mechanism. One end of the filling head is provided with a filling port; the valve is provided with an extension, the valve is movably disposed at the filling port, and when the valve moves to abut against the filling port, the extension extends out of the filling port; the buoyancy mechanism is movably limited to the outside of the filling head, and the extension and the buoyancy mechanism are connected by the connector.

[0007] Optimally, it may also include: a buoyancy sensing device and a driving device; The buoyancy sensor is installed on the outside of the filling head and above the buoyancy mechanism; the output end of the drive device is connected to the filling head and is used to drive the filling head to move up and down; the buoyancy mechanism moves to a position close to the sensing end of the buoyancy sensor; the buoyancy sensor is communicatively connected to the drive device; the buoyancy sensor is used to control the drive device so that the filling head remains below the liquid surface when it floats to the surface.

[0008] Alternatively, the buoyancy sensing device can be a pressure sensing device; the buoyancy mechanism can move upward to abut the sensing end of the buoyancy sensing device.

[0009] Alternatively, the buoyancy mechanism may be optimally distributed around the outer wall of the filling head.

[0010] Optimally, the outer diameter of the protrusion decreases from high to low, forming a small diameter end at the bottom; the connector is connected to the small diameter end; The inner diameter of the filling port decreases from high to low and forms an inclined inner wall; the side of the protrusion is provided with a tapered end face; When the valve moves to abut against the filling port, the conical end face is attached to the inner wall of the filling port; When the valve moves to the point of disengagement from the filling port, the conical end face is separated from the inner wall of the filling port and forms a liquid outlet channel.

[0011] Alternatively, the protrusion can be flexibly or rigidly connected to the buoyancy mechanism via the connector.

[0012] Optimally, the connector is rigidly connected to the protrusion and the buoyancy mechanism; a guide port is provided between the outer and inner sidewalls of the filling head, and the guide port is located at the contact position between the filling port and the valve; the guide port protrudes at the lowest point of the filling port; the connector moves along the guide port, causing the valve to move upward along the guide port.

[0013] A bubble-free filling method using a filling apparatus, comprising the following steps: (1) Insert the filling head into the container to be filled, with the bottom of the filling port of the filling head close to or against the bottom wall of the container, so that the liquid from the filling head is slowly output from between the filling port and the bottom wall of the container. (2) When the liquid level rises to the point that the buoyancy mechanism rises, the buoyancy mechanism gradually drives the valve to move upward through the connecting parts until it is separated from the filling port. The filling head rises until it is separated from the bottom wall of the container. The filling head accelerates the output of liquid below the liquid level in the container. (3) When the buoyancy mechanism reaches the opening of the container, the filling head gradually moves upward and detaches from the liquid surface; the buoyancy mechanism moves downward relative to the filling head and drives the valve to gradually move towards the inner wall of the filling port to slow down the output rate of the liquid from the filling port. (4) When the filling head is completely detached from the liquid surface, the valve blocks the filling port, restricting the liquid from the filling head from being output through the filling port.

[0014] Alternatively, in step (3), during the ascent of the buoyancy mechanism, the buoyancy mechanism moves upward to approach or contact the buoyancy sensing device; the buoyancy sensing device senses the buoyancy mechanism and controls the output parameters of the drive device in real time so that the filling head remains below the liquid surface when it floats.

[0015] The use of a filling device in feed formulation, wherein the filling device is the aforementioned filling device.

[0016] Compared with the prior art, one of the above technical solutions has the following beneficial effects: This solution provides a filling device that inserts a filling head into a container and feeds liquid into the filling head. Valves, connectors, and a buoyancy mechanism can adjust the filling port according to the liquid level, which can fill the container with liquid while avoiding the formation of air bubbles. This solves the problem of air bubbles being difficult to handle when the filling speed is too fast in existing filling equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the filling device when it is rigidly connected; Figure 2 This is a schematic diagram of one embodiment where the valve is pressed against the bottom wall of the container; Figure 3 This is a schematic diagram of one embodiment of the buoyancy mechanism driving the filling head to float. Figure 4 This is a schematic diagram of one embodiment of the buoyancy mechanism when it floats to near the liquid surface; Figure 5 This is a schematic diagram of one embodiment of the filling head floating to the liquid surface.

[0018] Figure 6This is a schematic diagram of an embodiment of a filling device with a guide port.

[0019] Figure 7 This is a schematic diagram of one embodiment of the filling device when it is a flexible connection; Figure 8 This is a schematic diagram of one embodiment where the valve is pressed against the bottom wall of the container; Figure 9 This is a schematic diagram of one embodiment of the buoyancy mechanism driving the filling head to float. Figure 10 This is a schematic diagram of one embodiment of the buoyancy mechanism when it floats to near the liquid surface; Figure 11 This is a schematic diagram of one embodiment of the filling head floating to the liquid surface.

[0020] in: 1. Filling head; 2. Valve; 3. Connector; 4. Buoyancy mechanism; 5. Buoyancy sensor; 6. Container; Filling port 11; protrusion 21; small diameter end 211, tapered end face 212, liquid outlet channel 213; guide port 221. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] like Figures 1-5 A filling device includes: a filling head 1, a valve 2, a connector 3, and a buoyancy mechanism 4; One end of the filling head 1 is provided with a filling port 11; the valve 2 is provided with an extension 21, the valve 2 is movably disposed at the filling port 11, and when the valve 2 moves to abut against the filling port 11, the extension 21 extends out of the filling port 11; the buoyancy mechanism 4 is movably limited to the outside of the filling head 1, and the extension 21 and the buoyancy mechanism 4 are connected by the connector 3.

[0024] This solution provides a filling device that inserts a filling head 1 into a container 6 and inputs liquid into the filling head 1. The valve 2, connector 3, and buoyancy mechanism 4 can adjust the filling port 11 according to the liquid level 63, which can fill the container 6 with liquid and avoid the formation of air bubbles. This solves the problem that the existing filling equipment has a high feeding speed, which makes it difficult to deal with air bubbles.

[0025] Specifically, in the initial state, valve 2 is pressed against the filling port 11 under the action of gravity and / or pressure. At this time, the protrusion 21 of valve 2 is located outside the filling port 11, such as... Figure 1 or Figure 7 When it is necessary to add material to container 6, the filling head 1 is inserted into the container 6 to be filled, either manually or mechanically. The filling port 11 of the filling head 1 is close to or abuts against the bottom wall 61 of container 6. At this time, valve 2 contacts the bottom wall 61 of container 6 through its outer extension 21. Therefore, valve 2 is equivalent to being detached from the inner wall of the filling port 11. Liquid from the filling head 1 can flow out from between the filling port 11 and valve 2. The outflow rate gradually increases as the valve moves upward relative to the filling port, the liquid outlet channel 213 gradually increases, and the flow rate gradually increases. Because the outflow rate is slow at the beginning, no air bubbles will form at the beginning of filling. Figure 2 or Figure 8 ;like Figure 2 or Figure 8As the filling port 11 remains close to or in contact with the bottom wall 61 of the container 6, liquid is discharged between the filling port 11 and the bottom wall 61 of the container 6. Therefore, only a small amount of liquid is output into the container 6. Due to the slow flow rate, the filling rate is slow at the beginning of the filling process, and no large impact force is generated. Therefore, no bubbles are generated on the liquid surface. When the liquid level 63 continues to rise slowly until it contacts the buoyancy mechanism 4 and causes the buoyancy mechanism 4 to float on the liquid level 63, this process will cause the buoyancy mechanism 4 to rise. However, the valve 2 can still remain in contact with the bottom wall 61 of the container 6 until the filling head 1 leaves the bottom wall. During this process, the liquid level 63 has accumulated to a certain height. There are no bubbles on the liquid level 63. During the ascent of the buoyancy mechanism 4, it drives the extension 21 to gradually rise via the connector 3, causing the valve 2 to detach upwards from the filling port 11. At this time, the entire filling head 1 can be raised manually or mechanically (e.g., by the drive device 7), eventually causing the filling head 1 to float and detach from the bottom wall. At this point, the liquid output flow rate from the filling port 11 increases, such as... Figure 3 or Figure 9 As the liquid is poured in, the buoyancy mechanism 4 moves further upward, and the filling head 1 continues to rise, ensuring that the buoyancy mechanism 4 remains floating on the liquid surface 63. The filling port 11 of the filling head 1 remains below the liquid surface 63, and there is a certain height difference between the liquid output position of the filling port 11 and the plane where the liquid surface 63 is located. Combined with the fact that the valve 2 occupies part of the space of the filling port 11, even if the liquid flow rate output from the filling port 11 increases, the rapid output of the liquid will basically not generate bubbles at the liquid surface 63. When the buoyancy mechanism 4 reaches the opening 62 of the container 6, the filling port 11 of the filling head 1 is still below the liquid surface 63. Figure 4 or Figure 10 Subsequently, the filling head 1 can be driven upwards manually or mechanically (e.g., by drive device 7). Due to gravity, the buoyancy device 4 and / or valve 2 will move slightly downwards relative to the filling head as a whole. As valve 2 moves downwards relative to the filling head 1, the liquid channel 213 gradually decreases, further reducing the liquid outflow rate. When the filling head 1 moves further upwards to near the opening 62 of the container 6, valve 2, due to gravity, gradually closes the filling head, stopping the liquid addition. At this point, the container is basically full of liquid, and there are no air bubbles. Therefore, the liquid output rate gradually decreases, preventing rapid liquid output near the opening 62 of the container 6 to avoid generating a large number of air bubbles. At this point, the filling head 1 is at the bottle mouth 62. Then, the filling head 1 continues to gradually rise above the liquid surface 63, prepared for the next filling, using manual or mechanical drive. When the filling head 1 is completely above the liquid surface 63, valve 2, under its own weight, blocks the filling port 11, restricting the liquid output from the filling head 1 through the filling port 11. Figure 5 or Figure 11 .

[0026] The buoyancy mechanism 4 is movably confined to the outside of the filling head 1. It can be confined to the outside of the filling head 1 by known means, such as by using other mechanisms to confine the buoyancy mechanism 4 to the outside of the filling head 1, such as using ropes to fix the two. Alternatively, the buoyancy mechanism is preferably a hollow annular structure, sleeved on the outside of the filling head, and can be slidably connected.

[0027] Optimally, it also includes: a buoyancy sensing device 5 and a driving device 7; The buoyancy sensing device 5 is installed on the outside of the filling head 1 and is located above the buoyancy mechanism 4; the output end of the drive device 7 is connected to the filling head 1 and is used to drive the filling head 1 to move up and down; the buoyancy mechanism 4 moves to a position close to the sensing end of the buoyancy sensing device 5; the buoyancy sensing device 5 is communicatively connected to the drive device 7; the buoyancy sensing device 5 is used to control the drive device 7 so that the filling head 1 remains below the liquid level 63 when it floats.

[0028] This solution uses a drive device 7 to drive the filling head 1 to float upwards and detach from the bottom wall. Combined with the connecting piece 3, this causes the valve 2 to float upwards. At this time, the gap between the filling port 11 and the valve 2 can be gradually adjusted to its maximum, increasing the liquid output flow rate. Figure 3 During the ascent of the buoyancy mechanism 4, the buoyancy mechanism 4 moves upward to approach the buoyancy sensing device 5; the buoyancy sensing device 5 detects the approach of the buoyancy mechanism 4, and controls the parameters of the drive device 7 according to the preset program, thereby controlling the state of the filling head 1 when it floats, ensuring that the filling head 1 remains submerged below the liquid surface during this floating process, until the filling head 1 moves to the vicinity of the opening 62 of the container 6.

[0029] The buoyancy sensing device 5 is a known position sensor, which can be selected as a limit switch, proximity switch, photoelectric sensor, magnetic field sensor, wave / signal ranging sensor, etc., as long as it can sense the position of the buoyancy mechanism 4. The buoyancy sensing device 5 is used to control the parameters of the drive device 7 during movement. It is only necessary to change the motion parameters of the drive device 7 during the ascent of the filling head 1. For example, in one embodiment, the drive device 7 can be below the liquid surface, and the amount of water absorbed or discharged by the drive device 7 per unit time can be controlled in real time. When the amount of water absorbed increases, the rising speed of the filling head 1 decreases; when the amount of water discharged increases, the rising speed of the filling head 1 increases, thereby keeping the filling head 1 submerged below the liquid surface during the ascent process. The driving device 7 can also be a known mechanism with a driving lifting function, such as a cylinder, a combination of gears and racks, a combination of gears and toothed chains, a conveyor belt structure, etc., as long as it can drive the filling head 1 to rise. For example, in one embodiment, the driving device 7 is located above the liquid surface, for example, using a conventional robotic arm. The robotic arm grips the filling head 1 and controls the rising of the filling head 1, keeping the filling head 1 submerged below the liquid surface during the floating process.

[0030] The communication connection method here refers to the communication established between connected devices through signal transmission and interaction, which can be divided into wired connection and wireless connection; wired connection is such as conventional data cable connection; wireless connection is such as conventional WiFi, Bluetooth, infrared, NFC, etc.

[0031] Alternatively, the buoyancy sensing device 5 can be a pressure sensing device; the buoyancy mechanism 4 can move upward to abut the sensing end of the buoyancy sensing device 5.

[0032] Pressure sensing devices can convert mechanical deformation caused by pressure into electrical signals; such as Figure 3 When the buoyancy mechanism 4 moves upward to the sensing end of the buoyancy sensing device 5, the buoyancy sensing device 5 can detect the real-time pressure of the buoyancy mechanism 4. The pressure signal is converted into an electrical signal, which drives the drive device 7 to move. Alternatively, the pressure signal can be converted into electrical signals of different magnitudes, which drive the speed of the drive device 7 to control the output parameters of the drive device 7, thereby keeping the filling head 1 submerged below the liquid surface during the buoyancy process.

[0033] Alternatively, the protrusion can be flexibly or rigidly connected to the buoyancy mechanism via the connector.

[0034] like Figures 1-6 When the connecting component moves in near-synchronous motion with the buoyancy mechanism, the connecting component is a rigid connection, such as a rod or plate made of a relatively hard material. Figures 7-11 The multiple positions of the connector itself can be adaptively adjusted according to the buoyancy mechanism. The connector is a soft connection and is generally made of soft material or a mechanism with multiple degrees of freedom. When the protruding part and the buoyancy mechanism are flexibly connected by the connector 3, the connector 3 can be a connecting line, a connecting rope, or a connecting strap. The connector 3 can be selected from connecting lines, connecting ropes, connecting straps, or connecting chains as needed; among them, the connecting line is preferably a linear object, such as fishing line, which has the best mechanical properties and is lightweight, with negligible buoyancy in water; at the same time, the diameter of the linear object is the smallest, allowing the filling port 11 to remain in contact with the bottom wall 61 of the container 6. With the linear object located between the filling port 11 and the bottom wall 61 of the container 6, the liquid flows out from between the filling port 11 and the bottom wall 61 of the container 6 at the slowest rate, without generating air bubbles. The connecting rope is a rope (e.g., a plastic binding rope can be used), and the connecting strap is a strip (e.g., a plastic binding strap can be used), which also has the advantages of being lightweight to negligible buoyancy in water and not generating air bubbles.

[0035] Optimally, a guide port 221 is provided between the outer side wall and the inner side wall of the filling head 1, and the guide port 221 is located at the contact position between the filling port 11 and the valve 2; the guide port 221 is exposed at the lowest point of the filling port 11; the connector 3 moves along the guide port 221, driving the valve 2 to move upward along the guide port 221.

[0036] like Figure 6 Taking the connection 3 rigidly connected to the protrusion and the buoyancy mechanism as an example, the filling head 1 is provided with a filling port 11, and a guide port 221 is provided between the inner and outer side walls of the filling port 11; the guide port 221 is located at the contact position between the filling port 11 and the valve 2, and when the valve 2 abuts against the filling port 11, it can block the guide port 221; the guide port 221 extends upward from the bottom of the filling port 11, and the connection 3 can drive the valve 2 to continue to move upward along the guide port 221, without being affected by the wall of the filling head 1 in terms of movement distance; for example, when the liquid flows out, the buoyancy generated makes the buoyancy... When mechanism 4 floats, compared to the embodiment without guide port 221, connector 3 can move further to guide port 221, thereby driving valve 2 to move further upward. Valve 2 can move to the upper middle part of filling port 11, thereby reducing the space occupied by valve 2 in filling port 11 or not occupying filling port 11, providing more space for liquid output in filling port 11; and in addition to being output below filling port 11, liquid can also be output through guide port 221, thereby ensuring that filling port 11 of filling head 1 can fill liquid at a faster speed when it is below the liquid surface.

[0037] Optimally, the outer diameter of the protrusion 21 decreases from high to low, and a small diameter end 211 is formed at the bottom; the connector 3 is connected to the small diameter end 211.

[0038] The outer diameter of the protrusion 21 decreases from high to low, resulting in a shape where the lower outer diameter is smaller than the upper outer diameter. The design of the connector 3 connecting to the small-diameter end 211 ensures that the connector 3 is positioned close to the outermost end of the filling port 11 when the filling port 11 of the filling head 1 is close to or in contact with the bottom wall 61 of the container 6, without completely entering the filling port 11. This prevents the connector 3 from entering the filling port 11 and blocking its inner wall. Simultaneously, the small-diameter end 211 is the area with the smallest outer diameter of the protrusion 21. When it contacts the bottom wall 61 of the container 6, the small-diameter end 211 occupies a small proportion of the filling port 11, allowing the liquid from the filling head 1 to drain between the small-diameter end and the filling port 11, and then through the gap between the filling port 11 and the bottom wall.

[0039] Optimally, the inner diameter of the filling port 11 decreases from high to low and forms an inclined inner sidewall; the side of the protrusion 21 is provided with a tapered end face 212; When the valve 2 moves to abut against the filling port 11, the conical end face 212 is attached to the inner wall of the filling port 11; When the valve 2 moves to the point of disengagement from the filling port 11, the conical end face 212 is separated from the inner wall of the filling port 11 and forms a liquid outlet channel 213.

[0040] The filling port 11 has an inclined inner wall; the outer diameter of the protrusion 21 decreases from high to low, thus forming a conical end face 212 on the side; when the valve 2 moves to abut against the filling port 11, the conical end face 212 of the valve 2 is attached to the inner wall of the filling port 11, which can increase the contact area between the valve 2 and the filling port 11 and improve the blocking effect; when the valve 2 moves to disengage from the filling port 11, the conical end face 212 is separated from the inner wall of the filling port 11 and forms a liquid outlet channel 213. The lower the conical end face 212 is, the smaller the inner diameter of the liquid outlet channel 213 and the smaller the liquid outlet rate.

[0041] Optimally, the buoyancy mechanism 4 is distributed around the outer side wall of the filling head 1; the middle part of the connector 3 is connected to the valve 2 near the filling port 11, and the two ends of the connector 3 are respectively connected to the buoyancy mechanism 4.

[0042] The number of buoyancy mechanisms 4 can be one. For example, the buoyancy mechanism 4 can be ring-shaped and sleeved on the outer periphery of the filling head 1. The two ends of the connector 3 are respectively connected to the same buoyancy mechanism 4.

[0043] The number of buoyancy mechanisms 4 can also be multiple, i.e., at least two. Multiple buoyancy mechanisms 4 are arranged on the outer periphery of the filling head 1. The buoyancy mechanisms 4 are non-circular, meaning they are located at different positions on the filling head 1, which can improve the stability of the filling head 1 when it floats and maintain uniform force on the filling head 1. The connecting piece 3 can connect the valve 2 and the two buoyancy mechanisms 4 into one unit. The two buoyancy mechanisms 4 at different positions work together through the connecting piece 3 to drive the valve 2 to float, preventing the valve 2 from being affected by liquid flow from a single direction and causing it to deviate obliquely during floating, thus ensuring rising stability. At the same time, the two buoyancy mechanisms 4 are connected by the connecting piece 3, and there is a mutual traction relationship between them, which can prevent the floating rate of a single buoyancy mechanism 4 from being too high or too slow, thereby maintaining the rising stability of the valve 2.

[0044] A bubble-free filling method using a filling apparatus, comprising the following steps: (1) Insert the filling head 1 into the container 6 to be filled, with the bottom of the filling port 11 of the filling head 1 close to or against the bottom wall 61 of the container 6, so that the liquid from the filling head 1 is slowly output from between the filling port 11 and the bottom wall 61 of the container 6. (2) When the liquid level 63 rises to the point that the buoyancy mechanism 4 rises, the buoyancy mechanism 4 gradually drives the valve 2 to move upward through the connector 3 until it is separated from the filling port 11. The filling head 1 rises to the point that it is separated from the bottom wall 61 of the container 6. The filling head 1 accelerates the output of liquid below the liquid level 63 of the container 6. (3) When the buoyancy mechanism 4 reaches the opening 62 of the container 6, the filling head 1 gradually moves upward away from the liquid surface 63; the buoyancy mechanism 4 moves downward relative to the filling head 1 and drives the valve 2 to gradually move towards the inner wall of the filling port 11 to slow down the output rate of the liquid from the filling port 11. (4) When the filling head 1 is completely detached from the liquid surface 63, the valve 2 blocks the filling port 11, restricting the liquid from the filling head 1 from being output through the filling port 11.

[0045] Optimally, in step (3), during the ascent of the buoyancy mechanism 4, the buoyancy mechanism 4 moves upward to approach or contact the buoyancy sensing device 5; the buoyancy sensing device 5 senses the buoyancy mechanism 4 and controls the output parameters of the drive device 7 in real time, so that the filling head 1 remains below the liquid level 63 when it floats. When the buoyancy device 4 finally disengages from the pressure sensing device 5, a certain delay can be set so that the entire filling head 1 continues to move upward to a distance above the bottle opening for preparation for the next filling.

[0046] The use of a filling device in feed formulation, wherein the filling device is the aforementioned filling device.

[0047] This solution enables the full filling of feed liquids containing surfactants and other easily foaming substances without generating bubbles, thereby improving product stability and simplifying the process.

[0048] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filling device, characterized in that, include: Filling head, valves, connectors, and buoyancy mechanism; One end of the filling head is provided with a filling port; the valve is provided with an extension, the valve is movably disposed at the filling port, and when the valve moves to abut against the filling port, the extension extends out of the filling port; the buoyancy mechanism is movably limited to the outside of the filling head, and the extension and the buoyancy mechanism are connected by the connector.

2. The filling device according to claim 1, characterized in that, Also includes: buoyancy sensing device and driving device; The buoyancy sensor is installed on the outside of the filling head and above the buoyancy mechanism; the output end of the drive device is connected to the filling head and is used to drive the filling head to move up and down; the buoyancy mechanism moves to a position close to the sensing end of the buoyancy sensor; the buoyancy sensor is communicatively connected to the drive device; the buoyancy sensor is used to control the drive device so that the filling head remains below the liquid surface when it floats to the surface.

3. A filling device according to claim 2, characterized in that, The buoyancy sensing device is a pressure sensing device; the buoyancy mechanism moves upward to abut the sensing end of the buoyancy sensing device.

4. A filling device according to claim 1, characterized in that, The buoyancy mechanism is distributed around the outer wall of the filling head.

5. A filling device according to claim 1, characterized in that, The outer diameter of the protrusion decreases from high to low, forming a small diameter end at the bottom; the connector is attached to the small diameter end; The inner diameter of the filling port decreases from high to low and forms an inclined inner wall; the side of the protrusion is provided with a tapered end face; When the valve moves to abut against the filling port, the conical end face is attached to the inner wall of the filling port; When the valve moves to the point of disengagement from the filling port, the conical end face is separated from the inner wall of the filling port and forms a liquid outlet channel.

6. A filling device according to claim 1, characterized in that, A guide port is provided between the outer and inner side walls of the filling head, and the guide port is located at the contact position between the filling port and the valve; the guide port is exposed at the bottom of the filling port; the connector moves at the guide port, driving the valve to move upward along the guide port.

7. A filling apparatus according to any one of claims 1-6, characterized in that, The protrusion is connected to the buoyancy mechanism via a flexible or rigid connection through the connector.

8. A bubble-free filling method using a filling apparatus, comprising the filling apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: (1) Insert the filling head into the container to be filled, with the bottom of the filling port of the filling head close to or against the bottom wall of the container, so that the liquid from the filling head is slowly output from between the filling port and the bottom wall of the container. (2) When the liquid level rises to the point that the buoyancy mechanism rises, the buoyancy mechanism gradually drives the valve to move upward through the connecting parts until it is separated from the filling port. The filling head rises until it is separated from the bottom wall of the container. The filling head accelerates the output of liquid below the liquid level in the container. (3) When the buoyancy mechanism reaches the opening of the container, the filling head gradually moves upward and detaches from the liquid surface; the buoyancy mechanism moves downward relative to the filling head and drives the valve to gradually move towards the inner wall of the filling port to slow down the output rate of the liquid from the filling port. (4) When the filling head is completely detached from the liquid surface, the valve blocks the filling port, restricting the liquid from the filling head from being output through the filling port.

9. The bubble-free filling method of the filling device according to claim 8, characterized in that, In step (3), during the ascent of the buoyancy mechanism, the buoyancy mechanism moves upward to approach or contact the buoyancy sensing device; the buoyancy sensing device senses the buoyancy mechanism and controls the output parameters of the drive device in real time so that the filling head remains below the liquid surface when it floats.

10. The use of a filling device in feed formulation, characterized in that, The filling device is a filling device according to any one of claims 1-7.

Images