A liquid filling device

Abstract

The present application provides a kind of liquid filling device, it relates to food, cosmetic and pharmaceutical production technical field, operating assembly movable insertion is arranged in the inside of filling needle cylinder, operating assembly includes operating rod and anti-dripping cap, the outer diameter of operating rod is less than the inner diameter of moving channel, the outer diameter of anti-dripping cap is greater than the outer diameter of operating rod, operating rod can move in moving channel;Drive device is used to drive operating assembly to move along axial direction relative to moving channel, when anti-dripping cap contacts the end of filling needle cylinder and forms seal, when anti-dripping cap separates the end of filling needle cylinder, open liquid supply, the liquid that flows out in moving channel impacts to anti-dripping cap, so that liquid is dispersed impact to the inner wall of filling bottle towards four directions, relative to directly impact bottle bottom, can effectively reduce the generation of foam, to solve the problem of unstable filling needle load, when anti-dripping cap contacts the end of filling needle cylinder and forms seal, can effectively stop liquid supply, prevent liquid drop, solve the problem of pollution product and environment.

Description

Technical Field

[0001] This invention relates to the fields of food, cosmetics and pharmaceutical production technology, and more particularly to a liquid filling device. Background Technology

[0002] The fill volume of a complete nutritional oral liquid bottle filling machine is one of the quality standards, so a stable fill volume is particularly crucial. Due to the high concentration and specific gravity of oral liquid solutions, higher pressure is required to maintain the filling speed during production. During production, high-pressure fluid is injected into the bottle through a filling needle, and the liquid directly impacts the bottom of the bottle, leading to the following problems with high-pressure filling:

[0003] 1. The solution impact during filling generates a large amount of foam: foam overflowing from the bottle mouth causes product contamination; excessive foam can easily lead to unstable filling volume.

[0004] 2. Due to the high specific gravity of the solution, the filling needle does not collect the solution well after the inlet valve is closed, and the solution inside the needle will drip, causing equipment and environmental pollution.

[0005] For those skilled in the art, solving the problems of unstable filling volume and product and environmental contamination is a technical issue that needs to be addressed. Summary of the Invention

[0006] This invention provides a liquid filling device that can solve the problems of unstable filling volume, product contamination, and environmental pollution. The specific solution is as follows:

[0007] A liquid filling device includes a support, a filling syringe, an operating component, and a driving device. The filling syringe is mounted on the support, and a moving channel is provided inside the filling syringe. The operating component is movably inserted into the moving channel, and the driving device is used to drive the operating component to move axially relative to the moving channel. The operating component includes a control lever and a drip-proof cap. The drip-proof cap is mounted on the control lever. The outer diameter of the control lever is smaller than the inner diameter of the moving channel, and the outer diameter of the drip-proof cap is larger than the outer diameter of the control lever. The control lever can move within the moving channel, and the drip-proof cap can contact the end of the filling syringe to form a seal. When the drip-proof cap is separated from the filling syringe, the liquid flowing out of the moving channel impacts the drip-proof cap, causing the liquid to disperse in all directions and impact the inner wall of the filling bottle.

[0008] Optionally, the support is provided with a liquid inlet, through which liquid enters the through channel inside the support and then enters the moving channel.

[0009] Optionally, the liquid inlet is connected to a liquid supply pipe, the liquid supply pipe is fixed to the bracket, and an inlet valve is provided on the liquid supply pipe.

[0010] Optionally, the inlet valve and the drive device are configured such that when the inlet valve is closed and a predetermined time value is reached, the drive device controls the operating component to close and stop the liquid dispensing; the predetermined time value is 80-120 ms. This first stops the liquid supply, then seals the filling syringe to prevent solution leakage outside the bottle, achieving precise filling.

[0011] Optionally, the impact surface of the drip cap that contacts the liquid is a conical surface, and the central angle of the conical surface is between 120 and 180 degrees. When the liquid contacts the impact surface, it causes the liquid to deflect and flow obliquely downwards.

[0012] Optionally, the outer diameter of the anti-drip cap is equal to the outer diameter of the filling syringe; the portion of the anti-drip cap facing away from the liquid impact surface is a tapered surface. This reduces the amount of liquid remaining when the anti-drip cap is lifted from the liquid surface.

[0013] Optionally, the control lever and the drip cap are connected by a thread, allowing for quick disassembly and replacement.

[0014] Optionally, the bracket is provided with a through channel, and the control lever is provided with a guide section that contacts the inner wall of the through channel to provide guidance; the drive device is connected to the end of the guide section.

[0015] Optionally, at least two first sealing rings are provided between the guide section and the through channel; the filling syringe is detachably installed on the bracket, and a second sealing ring is provided between the filling syringe and the bracket. The first and second sealing rings isolate the liquid, achieving a better sealing effect.

[0016] Optionally, the impact surface of the anti-drip cap is provided with at least one dividing block, which extends into the moving channel along the axial direction of the operating lever, thereby dividing the liquid outlet surface to form a channel for air flow. The dividing block is used to divide the solution spray surface and to remove air from the bottle, thereby improving filling efficiency.

[0017] This invention provides a liquid filling device. A filling syringe is mounted on a bracket, and an operating component is movably inserted into a moving channel inside the filling syringe. The operating component includes a control lever and a drip-proof cap. The outer diameter of the control lever is smaller than the inner diameter of the moving channel, and the outer diameter of the drip-proof cap is larger than the outer diameter of the control lever. The control lever can move within the moving channel. A driving device is used to drive the operating component to move axially relative to the moving channel. When the drip-proof cap contacts the end of the filling syringe to form a seal, the liquid supply is started when the drip-proof cap separates from the end of the filling syringe. The liquid flowing out of the moving channel impacts the drip-proof cap, causing the liquid to disperse in all directions and impact the inner wall of the filling bottle. Compared with direct impact on the bottom of the bottle, this effectively reduces foam generation, thereby solving the problem of unstable filling volume. When the drip-proof cap contacts the end of the filling syringe to form a seal, the liquid supply can be effectively stopped to prevent liquid dripping, thus solving the problem of product and environmental contamination, preventing foam from overflowing from the bottle mouth and causing insufficient product filling, and reducing product waste and packaging waste.

[0018] In one embodiment, the inlet valve is first closed to stop the liquid supply, and then the anti-drip cap contacts the end of the filling syringe to stop the dispensing. This avoids liquid leakage, contamination of the product packaging itself, equipment production line, and environment; at the same time, it allows for highly accurate dosing, meeting the stringent dosing standards in the pharmaceutical industry. Because precise dosing is achieved, the scrap rate is reduced, thereby improving production efficiency.

[0019] Because of the above two points, this invention can avoid waste, reduce waste bottles, reduce product waste, reduce cleaning equipment costs, reduce human resource waste, and so on.

[0020] In one embodiment, a liquid separator is provided to divide the liquid surface and form a channel for air flow, thereby expelling air from the bottle during the filling process and resulting in a fast filling speed. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a specific embodiment of the liquid filling device provided by the present invention;

[0023] Figure 2 A cross-sectional schematic diagram of the liquid filling device provided by the present invention in the closed and stopped liquid supply state;

[0024] Figure 3 A cross-sectional schematic diagram of the liquid filling device provided by the present invention in the open and start-up liquid supply state;

[0025] Figure 4 A schematic diagram of a specific embodiment of the drip-proof cap;

[0026] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0027] Figure 6 A schematic diagram of the structure for preventing the drip cap from discharging liquid;

[0028] Figure 7 A cross-sectional schematic diagram of a specific embodiment of a filling syringe;

[0029] Figure 8 A cross-sectional schematic diagram of one specific embodiment of the manipulation component;

[0030] Figure 9 A cross-sectional schematic diagram of a specific embodiment of the stent;

[0031] Figure 10 for Figure 2 A magnified view of part A in the middle;

[0032] Figure 11 for Figure 3 A magnified view of part B in the middle section.

[0033] The image includes:

[0034] 1. Support bracket, 11. Liquid inlet, 12. Through channel, 13. First sealing ring, 2. Filling syringe, 21. Moving channel, 22. Second sealing ring, 3. Control assembly, 31. Control lever, 32. Anti-drip cap, 33. Dispensing block, 34. Guide section, 4. Drive device, 5. Liquid supply pipe, 51. Liquid inlet valve. Detailed Implementation

[0035] The core of this invention is to provide a liquid filling device that can solve the problems of unstable filling volume, product contamination, and environmental pollution.

[0036] To enable those skilled in the art to better understand the technical solution of the present invention, the liquid filling device of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Combination Figures 1 to 3 As shown, the present invention provides a liquid filling device, including a support 1, a filling syringe 2, an operating component 3, and a driving device 4, etc.; the support 1 serves as a fixed support, and several other structures are installed on the support 1.

[0038] The filling syringe 2 is mounted on the bracket 1. During use, the filling syringe 2 and the bracket 1 are fixed together, and the bracket 1 keeps the filling syringe 2 in a vertically extending state along its axis. The filling syringe 2 is a hollow cylindrical structure with a moving channel 21 inside. The moving channel 21 has an inlet for liquid inlet and an outlet for liquid outlet. Liquid from the outside enters the moving channel 21 through the inlet, flows within the moving channel 21, and finally flows out of the moving channel 21 through the outlet.

[0039] Combination Figure 7 The moving channel 21 is arranged along the axial direction of the filling syringe 2. The operating component 3 is movably inserted into the moving channel 21 and can move along the axial direction within the moving channel 21. The driving device 4 is used to drive the operating component 3 to move axially relative to the moving channel 21. The driving device 4 is a power component for driving the operating component 3 and can realize power output. The driving device 4 can be an electric cylinder, pneumatic cylinder, hydraulic cylinder, lead screw, etc. The driving device 4 can also be a cam or eccentric wheel, and an elastic reset structure (e.g., a spring) is provided on the operating component 3. The cam or eccentric wheel can press the operating component 3 downward to release the anti-drip cap 32 from the filling syringe 2. When the cam or eccentric wheel no longer pushes the operating component 3 downward, the elastic reset structure pushes the operating component 3 upward to restore the seal of the anti-drip cap 32 to the filling syringe 2. These specific embodiments should all be included within the protection scope of this invention.

[0040] Combination Figure 8 As shown, the control assembly 3 includes a control lever 31 and a drip cap 32. The drip cap 32 is mounted on the control lever 31, and in use, the drip cap 32 and the control lever 31 are fixed together. The outer diameter of the control lever 31 is smaller than the inner diameter of the moving channel 21, allowing the control lever 31 to move inside the moving channel 21, forming a channel for liquid flow between the outer surface of the control lever 31 and the inner surface of the moving channel 21. The outer diameter of the drip cap 32 is larger than the outer diameter of the control lever 31 and the inner diameter of the moving channel 21, preventing the drip cap 32 from entering the moving channel 21. The control lever 31 can move within the moving channel 21, and the drip cap 32 can contact the end of the filling syringe 2 to form a seal. Figure 10 As shown, when the drip-proof cap 32 moves upward and contacts the bottom end of the filling syringe 2, a seal is formed, preventing the internal liquid from flowing out; as Figure 11 As shown, when the drip cap 32 moves downward and separates from the bottom of the filling syringe 2, the liquid inside flows out from the bottom of the filling syringe 2.

[0041] Combination Figure 11When the anti-drip cap 32 separates from the filling syringe 2, the liquid in the moving channel 21 flows downwards. The outflowing liquid impacts the upper surface of the anti-drip cap 32. Guided by the upper surface of the anti-drip cap 32, the liquid disperses in all directions, impacting the inner wall of the filling bottle. The outflowing liquid does not directly impact the bottom of the bottle. Figure 6 As shown, X represents the umbrella-shaped surface formed by the liquid. The liquid filling device provided by this invention forms an umbrella-shaped surface, which uniformly contacts the inner wall of the bottle. The liquid flows down the bottle wall, and the contact point between the liquid and the bottle wall is above the filling liquid surface. Therefore, it avoids the problem of foaming caused by impact with the solution inside the bottle. Compared with the filling method that directly impacts the bottom of the bottle, it can effectively reduce foam generation, thereby solving the problem of unstable filling volume. When the anti-drip cap 32 contacts the end of the filling syringe 2 to form a seal, it can form an effective seal to ensure that the liquid supply stops. When the filling syringe 2 is withdrawn from the bottle, it can prevent liquid from dripping, solving the problem of product and environmental contamination.

[0042] Based on the above solution, the bracket 1 provided by the present invention is provided with a liquid inlet 11, combined with Figure 9 As shown, liquid enters the through channel 12 inside the support 1 through the inlet 11 and then enters the moving channel 21, which can supply liquid to the filling syringe 2. The inlet 11 is located on the side of the support 1, so that the liquid enters the gap between the inner wall of the through channel 12 and the outer surface of the operating lever 31.

[0043] Combination Figure 1 As shown, the liquid inlet 11 of the present invention is connected to the liquid supply pipe 5, which is fixed to the bracket 1. An inlet valve 51 is provided on the liquid supply pipe 5, and the liquid supply is controlled by controlling the opening and closing of the liquid supply pipe 5. The liquid supply pipe 5 and the liquid inlet 11 are connected by a flange, and a sealing ring can be provided at the contact surface between them.

[0044] The inlet valve 51 and the drive device 4 are configured such that when the inlet valve 51 is closed and a predetermined time value is reached, the drive device 4 controls the operating component 3 to close and stop the liquid dispensing; the predetermined time value is 80-120ms, which can be 80ms, 90ms, 100ms, 110ms, 120ms, etc. By stopping the liquid supply first and then closing the anti-drip cap 32, the bottom outlet of the filling syringe 2 is not closed at the moment the inlet valve 51 is closed. Liquid exists in the space between the inner wall of the filling syringe 2 and the operating lever 31, which can prevent excessive pressure from forming in this space and causing liquid leakage; the droplet (one drop) generated when the anti-drip cap 32 closes the bottom outlet of the filling syringe 2 is still inside the bottle, effectively preventing the solution from dripping outside the bottle.

[0045] The drip cap 32 has a conical surface on its impact surface that comes into contact with the liquid, with a central angle between 120 and 180 degrees. Figure 5As shown, the upper surface of the drip-proof cap 32 is conical, with a higher center and lower edges. When liquid impacts the upper surface of the drip-proof cap 32, it causes the liquid to flow diagonally downwards. The included angle of the upper surface of the drip-proof cap 32 is preferably 158 degrees. Besides a conical surface, the upper surface of the drip-proof cap 32 can also adopt other forms with a higher center and lower edges; these specific embodiments should all be included within the scope of protection of this invention. To ensure a tight seal, a structure matching the shape of the upper surface of the drip-proof cap 32 is also provided at the bottom end of the filling syringe 2 to ensure sufficient contact area.

[0046] Combination Figure 2 and Figure 10 As shown, in one specific embodiment, the outer diameter of the anti-drip cap 32 is equal to the outer diameter of the filling syringe 2, ensuring external consistency when the anti-drip cap 32 contacts the filling syringe 2. The portion of the anti-drip cap 32 facing away from the liquid impact surface is a tapered surface, combined with... Figure 10 As shown, the part of the anti-drip cap 32 facing away from the liquid impact surface has a structure that is wider at the top and narrower at the bottom, which reduces the amount of liquid remaining when it is lifted from the liquid surface after filling.

[0047] Specifically, in this invention, the control lever 31 and the drip cap 32 are connected by threads, combined with Figure 5 and Figure 11 As shown in the accompanying drawings of this invention, the drip cap 32 has an internal thread, and the end of the control lever 31 has an external thread. The end of the control lever 31 and the drip cap 32 are matched and fixedly connected. Because of the detachable connection method, replacement and assembly are convenient. In addition to the structure shown in the drawings, the control lever 31 can also have an internal thread, and the drip cap 32 can have a stud for connection.

[0048] like Figure 2 , Figure 9 As shown, the bracket 1 has a through channel 12, and the control lever 31 has a guide section 34 that contacts the inner wall of the through channel 12 for guidance. The outer diameter of the guide section 34 is larger than the outer diameter of the control lever 31. The drive device 4 is connected to the end of the guide section 34 and is used to drive the entire control assembly 3 to move axially. In this embodiment, the drive device 4 is located directly above the control assembly 3. Alternatively, the drive device 4 can be located on the side of the bracket 1 and connected to the side of the control assembly 3, which can achieve the same driving effect. At least two first sealing rings 13 are provided between the guide section 34 and the through channel 12. The first sealing rings 13 can prevent liquid from flowing upward and prevent liquid from flowing to the drive device 4. The filling syringe 2 provided by the present invention is detachably installed on the bracket 1. A second sealing ring 22 is provided between the filling syringe 2 and the bracket 1 to prevent liquid from leaking from the gap between the filling syringe 2 and the bracket 1.

[0049] Based on any of the above technical solutions and their combinations, combined with Figure 4 , Figure 5 , Figure 6 and Figure 11 As shown, the anti-drip cap 32 of the present invention has at least one liquid-distributing block 33 on its impact surface. The liquid-distributing block 33 extends into the moving channel 21 along the axial direction of the operating lever 31. The liquid-distributing block 33 is an axially extending block structure, and its length should be greater than the distance between the anti-drip cap 32 and the filling syringe 2. When the anti-drip cap 32 moves downward and separates from the filling syringe 2, the outflowing liquid is blocked by the liquid-distributing block 33, thereby dividing the liquid surface to form a channel for air flow. The liquid surface, guided and changed direction by the anti-drip cap 32, is umbrella-shaped. The liquid-distributing block 33 divides the umbrella-shaped liquid surface to form a gap. During the filling process, the space below the umbrella-shaped liquid surface needs to be drained, which can be discharged upward through this gap. In the accompanying drawings of the present invention, three liquid-distributing blocks 33 are shown, thereby forming three gaps in the umbrella-shaped liquid surface. However, other numbers are not excluded, such as one, two, four, etc. The separator block 33 divides the solution spray surface to expel air from the bottle. Without the separator block 33, the liquid surface discharged from the filling syringe 2 would cover the inner cavity of the bottle, and the air inside the bottle could not be expelled quickly, which would not be conducive to rapid filling. With the separator block 33, the liquid outlet surface of the filling syringe 2 is divided into three parts, with three gaps in the middle to evenly expel air.

[0050] The dispensing block 33 may or may not contact the control lever 31; normally, the dispensing block 33 needs to contact the inner wall of the filling syringe 2 to ensure that the umbrella-shaped liquid surface is effectively divided.

[0051] The working principle of this invention is as follows:

[0052] When the inlet valve 51 is opened, the valve stem of the drive device 4 moves downward, and the anti-drip cap 32 is lowered via the control lever 31, thereby opening the bottom outlet of the filling syringe 2. The liquid impacts the upper surface of the anti-drip cap 32 through the filling syringe 2, and the upper surface of the anti-drip cap 32 changes the flow direction of the liquid, causing the solution to spray above the liquid level line on the bottle wall, avoiding the generation of foam by impacting the solution inside the bottle. When filling is finished, the inlet valve 51 is closed, and the drive device 4 moves upward, raising the anti-drip cap 32 via the control lever 31 to close the bottom outlet of the filling syringe 2, preventing the solution inside the filling syringe 2 from dripping.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid filling device, characterized in that, It includes a support (1), a filling syringe (2), an operating component (3), and a drive device (4); The filling syringe (2) is mounted on the bracket (1), and a moving channel (21) is provided inside the filling syringe (2). The operating component (3) is movably inserted into the moving channel (21), and the driving device (4) is used to drive the operating component (3) to move axially relative to the moving channel (21). The control assembly (3) includes a control lever (31) and a drip cap (32). The drip cap (32) is mounted on the control lever (31). The outer diameter of the control lever (31) is smaller than the inner diameter of the moving channel (21). The outer diameter of the drip cap (32) is larger than the outer diameter of the control lever (31). The control lever (31) can move within the moving channel (21). The drip cap (32) can contact the end of the filling syringe (2) to form a seal. The upper surface of the anti-drip cap (32) is high in the center and low around the edges; the impact surface of the anti-drip cap (32) that comes into contact with the liquid is a conical surface, and the central angle of the conical surface is between 120 and 180 degrees. The anti-drip cap (32) has at least one dispensing block (33) on its impact surface. The dispensing block (33) is a block-shaped structure extending axially along the control lever (31), and the dispensing block (33) moves axially synchronously with the control lever (31) and the anti-drip cap (32). The length of the dispensing block (33) is greater than the distance between the anti-drip cap (32) and the filling syringe (2). The dispensing block (33) extends into the moving channel (21) axially along the control lever (31), and the dispensing block (33) contacts the inner wall of the filling syringe (2) to allow liquid to flow from the filling syringe. Before the liquid flows out of the bottom outlet of the cylinder (2), the liquid outlet surface in the moving channel (21) is pre-divided into multiple drainage areas, and a channel for air to flow upward is formed between the multiple drainage areas; the bracket (1) is provided with a liquid inlet (11), the liquid inlet (11) is connected to the liquid supply pipe (5), the liquid supply pipe (5) is provided with a liquid inlet valve (51), the liquid inlet valve (51) and the driving device (4) are configured such that when the liquid inlet valve (51) is closed and a predetermined time value of 80~120ms is reached, the driving device (4) controls the operating component (3) to close and stop the liquid flow; When the anti-drip cap (32) separates from the filling syringe (2), the liquid flowing out of the moving channel (21) impacts the anti-drip cap (32), causing the liquid to disperse in all directions and impact the inner wall of the filling bottle. The liquid also forms an umbrella-shaped liquid surface through the multiple drainage areas, allowing the air below the umbrella-shaped liquid surface to be discharged through the channel that allows the air to flow upward.

2. The liquid filling device according to claim 1, characterized in that, The liquid enters the through channel (12) inside the support (1) through the inlet (11) and then enters the moving channel (21).

3. The liquid filling apparatus according to claim 2, characterized in that, The liquid supply pipe (5) is fixed to the bracket (1).

4. The liquid filling device according to claim 1, characterized in that, The outer diameter of the anti-drip cap (32) is equal to the outer diameter of the filling syringe (2); the part of the anti-drip cap (32) facing away from the liquid impact surface is a tapered surface.

5. The liquid filling apparatus according to claim 1, characterized in that, The control lever (31) and the drip cap (32) are connected by threads.

6. The liquid filling apparatus according to claim 1, characterized in that, The bracket (1) is provided with a through channel (12), and the control lever (31) is provided with a guide section (34) that contacts the inner wall of the through channel (12) to achieve guidance; the drive device (4) is connected to the end of the guide section (34).

7. The liquid filling apparatus according to claim 6, characterized in that, At least two first sealing rings (13) are provided between the guide section (34) and the through channel (12). The filling syringe (2) is detachably installed on the bracket (1), and a second sealing ring (22) is provided between the filling syringe (2) and the bracket (1).

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