Accurate metering and drip-proof structure of barreled water production line filling valve

Abstract

The invention relates to the technical field of liquid filling, in particular to a precise metering and drip-proof structure of a filling valve of a barreled water production line, which comprises a fixed rack, a quantitative cylinder and a fixed drain pipe are arranged below the fixed rack, and a connecting water pipe and a water inlet pipe are arranged below the quantitative cylinder; a piston plate matched with the connecting water pipe and the water inlet pipe is arranged in the quantifying cylinder, and a quantifying mechanism matched with the piston plate is arranged in the fixed rack; one-way valve mechanisms are arranged in the connecting water pipe and the water inlet pipe, and the directions of the one-way valve mechanisms in the connecting water pipe and the water inlet pipe are opposite; the quantitative cylinder is connected with the fixed drain pipe through a connecting water pipe; a functional connecting cylinder matched with the fixed drainage pipe is arranged in the fixed drainage pipe, and a water inlet hole matched with the connecting water pipe is formed in the functional connecting cylinder; a sealing mechanism matched with the functional connecting cylinder is arranged in the fixed rack, and the sealing mechanism is connected with the quantifying mechanism; the other end of the water inlet pipe is connected with a water source, and barreled water is filled below the fixed drainage pipe.

Description

Technical Field

[0001] This application relates to the field of liquid filling technology, specifically to a precise metering and anti-drip structure for a filling valve in a bottled water production line. Background Technology

[0002] With increasing public awareness of healthy drinking water, bottled water, as a convenient and safe drinking water solution, is experiencing continuous market demand expansion, driving the bottled water industry towards large-scale and automated production. Filling, as the core process in bottled water production, directly determines product qualification rate, raw material utilization rate, and production efficiency. The filling valve, as the core actuator of the filling system, is crucial for ensuring filling quality through its accurate metering performance and anti-drip effect. In the current bottled water production process, accurate metering is a fundamental requirement for the filling process, not only affecting product volume consistency but also being a core element for compliant production and cost control. Existing bottled water production lines rely heavily on traditional flow meters or piston cylinder structures for metering valves, which face numerous bottlenecks in practical applications. On the one hand, bottled water filling is characterized by short cycles and high flow rates, making it difficult for traditional metering devices to maintain stable metering accuracy in high-speed filling scenarios. They are easily affected by factors such as medium pressure fluctuations and temperature changes, leading to excessive deviations in filling volume. Furthermore, some companies experience high error rates in manual filling processes, and even with ordinary automated equipment, it is difficult to meet the demands of high-precision production. In piston-cylinder structures, the clearance between the piston and cylinder can lead to liquid leakage, affecting metering accuracy. On the other hand, existing metering systems suffer from significant control response delays, making it impossible to accurately control the filling endpoint. This is especially problematic when switching between different types and sizes of bottled water, where the flexibility in adjusting metering parameters is insufficient and fails to meet lean manufacturing requirements. Insufficient metering accuracy not only wastes raw materials and increases production costs but can also lead to market complaints due to substandard product volume, damaging brand reputation. Drip leakage is another prominent industry pain point in bottled water filling. Seemingly minor drips can trigger a series of chain reactions, becoming a "hidden killer" restricting production efficiency and product quality. Existing anti-drip valve designs often use a single sealing ring or a simple mechanical reset structure, which has significant flaws. Long-term contact with water can cause aging and deformation of sealing components, leading to seal failure and allowing material to leak through gaps. At the end of filling, residual liquid after valve closure may drip due to gravity, causing further leakage. The consequences of dripping are extremely serious. Not only does it waste raw materials, but it also contaminates bottles and production lines, increases cleaning costs, and even poses a risk of cross-contamination. Furthermore, dripping material can cause bottle stains and loose labels, compromising product appearance and reducing consumer trust. While some existing technologies address filling accuracy or drip prevention, such as using high-precision flow meters and adding negative pressure adsorption devices, these solutions often focus on solving single problems and fail to achieve synergistic optimization of accurate metering and drip prevention. For example, while some high-precision flow meters improve metering accuracy, they do not address drip control after the filling valve is closed; and some drip prevention devices may affect the filling flow rate, hindering production efficiency.Furthermore, existing improvement solutions are mostly applicable to small-capacity bottled beverages or special media filling scenarios, making it difficult to adapt to the production needs of large-flow, multi-specification bottled water. Moreover, their complex equipment structure and high maintenance costs hinder their widespread adoption by small and medium-sized enterprises. In summary, current bottled water production line filling valves generally suffer from insufficient accuracy in metering and poor anti-drip performance. Existing technologies cannot simultaneously meet the comprehensive requirements of precision, efficiency, and cleanliness for large-scale production, thus restricting the high-quality development of the bottled water industry. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a precise metering and anti-drip structure for a filling valve in a bottled water production line, which offers advantages such as precise metering performance, effective drip prevention, improved filling quality, and increased production efficiency.

[0004] To achieve the above objectives, the present invention proposes the following technical solution: A precise metering and anti-drip structure for a filling valve in a bottled water production line, comprising a fixed frame, a metering cylinder and a fixed drain pipe disposed below the fixed frame, a connecting water pipe and a water inlet pipe disposed below the metering cylinder, a piston plate disposed inside the metering cylinder that cooperates with the connecting water pipe and the water inlet pipe, and a metering mechanism disposed inside the fixed frame that cooperates with the piston plate; a one-way valve mechanism is disposed inside both the connecting water pipe and the water inlet pipe, the one-way valve mechanisms in the connecting water pipe and the water inlet pipe being in opposite directions; the metering cylinder and the fixed drain pipe are connected through the connecting water pipe; a functional connecting cylinder that cooperates with the fixed drain pipe is disposed inside the fixed drain pipe, the functional connecting cylinder having a water inlet hole that cooperates with the connecting water pipe; a sealing mechanism that cooperates with the functional connecting cylinder is disposed inside the fixed frame, the sealing mechanism being connected to the metering mechanism; the other end of the water inlet pipe is connected to a water source, and bottled water is filled below the fixed drain pipe.

[0005] Furthermore, the metering mechanism includes a rotating internal gear rotatably connected within a fixed frame, a driving wheel rotatably connected within the fixed frame and meshing with the rotating internal gear, and a pair of driven wheels rotatably connected within the fixed frame, both driven wheels meshing with the rotating internal gear. The meshing positions of the driven wheels and the rotating internal gear are symmetrically arranged within the rotating internal gear. A pair of lifting studs are fixedly connected above the piston plate, and the lifting studs are screwed to the corresponding driven wheels respectively.

[0006] Furthermore, a reciprocating motor is coaxially fixed to the drive wheel.

[0007] Furthermore, a connecting slide rod is fixedly connected above the piston plate, and a linkage tooth block is fixedly connected to the connecting slide rod. A large linkage gear that cooperates with the linkage tooth block is rotatably connected inside the fixed frame, and a small linkage gear that meshes with the large linkage gear is rotatably connected inside the fixed frame.

[0008] Furthermore, the gear ratio between the large gear and the small gear is 10:1.

[0009] Furthermore, the sealing mechanism includes an adjusting sealing mechanism and a physical sealing mechanism; the adjusting sealing mechanism includes a coaxial large gear rotatably connected within a fixed frame, the coaxial large gear being coaxially fixed to a linkage small gear, a lifting gear plate slidably connected within the fixed frame and meshing with the coaxial large gear, a fixed rotating block fixedly connected below the lifting gear plate, and the fixed rotating block rotatably connected to the functional connecting cylinder; a limit slider is fixedly attached to the outer surface of the functional connecting cylinder, and a limit groove cooperating with the limit slider is provided on the inner surface of the fixed drain pipe; when the functional connecting cylinder rises, it will rotate because the limit slider slides within the limit groove, thereby enabling the water inlet on the functional connecting cylinder to correspond to the connection hole between the connecting water pipe and the fixed drain pipe; a drain ring is fixedly attached below the functional connecting cylinder, and multiple through holes are provided on the drain ring, the through holes connecting to the interior of the functional connecting cylinder.

[0010] Furthermore, the physical sealing mechanism includes a sealing block fixed below the drain ring, and an inner fixed sealing ring that cooperates with the sealing block is provided inside the fixed drain pipe.

[0011] Furthermore, the sealing block is made of rubber and has a boss-shaped design.

[0012] Furthermore, the one-way valve mechanism includes a fixed ring and a fixed seat fixedly connected inside the water inlet pipe. A movable slide column is slidably connected inside the fixed seat. A sealing plate that cooperates with the fixed ring is fixedly connected to one end of the movable slide column, and a protective plate is fixedly connected to the other end of the movable slide column. A return spring is sleeved on the movable slide column. One end of the return spring is fixedly connected to the protective plate, and the other end of the return spring is fixedly connected to the fixed seat.

[0013] Compared with the prior art, the gain effect of the present invention is as follows: The coordination between the metering mechanism, the fixed drain pipe, and the connecting water pipe ensures unidirectional water flow while also achieving quantitative water measurement.

[0014] The linkage gear block, linkage large gear, and linkage small gear are designed to trigger the sealing mechanism as soon as the metering mechanism is running. The gear ratio ensures the integrity of its function. When the metering cylinder contains the corresponding amount of water, the motor rotates in the reverse direction to fill the water tank. At this time, the sealing mechanism is fully opened. When the water filling is complete, the linkage gear block re-seals the sealing mechanism through the linkage large gear to achieve its anti-drip function.

[0015] The adjusting sealing mechanism in the sealing system achieves a seal between the connecting water pipe and the functional connecting cylinder, which effectively blocks the flow of water in the connecting water pipe.

[0016] Because the water pipe transports water from low to high when it supplies water to the functional connecting cylinder, when the metering mechanism stops, the water in the connecting pipe loses its power source, thus achieving a sealing effect.

[0017] The sealing block and drain ring can seal the water injection pipe, further enhancing its sealing function.

[0018] As can be seen from the above, the precise metering and anti-drip structure of the filling valve for a bottled water production line provided in this application includes a fixed frame, a metering cylinder, a piston plate, a metering mechanism, etc. The precise adjustment of liquid volume is achieved by controlling the movement of the piston plate through the metering mechanism. Combined with the synergistic effect of the one-way valve mechanism and the sealing mechanism, the liquid backflow and dripping are effectively blocked during the filling process. It has the advantages of precise metering performance, effective prevention of dripping, and improved filling quality and production efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a structural diagram of the present invention.

[0021] Figure 3 This is a partial enlarged view of the present invention.

[0022] Figure 4 This is a partial cross-sectional view of the present invention.

[0023] Figure 5 This is a cross-sectional view of the sealing mechanism of the present invention.

[0024] Figure 6 This is a perspective view of the sealing mechanism of the present invention.

[0025] Figure 7 This is a perspective view of the one-way valve mechanism of the present invention.

[0026] In the diagram: 1. Fixed frame, 2. Metering cylinder, 3. Fixed drain pipe, 4. Connecting water pipe, 5. Inlet pipe, 6. Rotating internal gear, 7. Driving wheel, 8. Driven wheel, 9. Lifting stud, 10. Connecting slide bar, 11. Linkage gear block, 12. Linkage large gear, 13. Linkage small gear, 14. Coaxial large gear, 15. Lifting gear plate, 16. Fixed rotating block, 17. Functional connecting cylinder, 18. Piston plate, 19. Internal fixed blocking ring, 20. Sealing block, 21. Drainage ring, 22. Limiting slider, 23. Limiting slide groove, 24. Sealing plate, 25. Fixed ring, 26. Fixed bracket, 27. Movable slide column, 28. Protective plate, 29. Return spring. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1-7 As shown: This application proposes a precise metering and anti-drip structure for a filling valve in a bottled water production line, including a fixed frame 1, a metering cylinder 2 and a fixed drain pipe 3 arranged below the fixed frame 1, a connecting water pipe 4 and a water inlet pipe 5 arranged below the metering cylinder 2, a piston plate 18 that cooperates with the connecting water pipe 4 and the water inlet pipe 5 arranged inside the metering cylinder 2, and a metering mechanism that cooperates with the piston plate 18 arranged inside the fixed frame 1; a one-way valve mechanism is arranged inside both the connecting water pipe 4 and the water inlet pipe 5, and the one-way valve mechanisms in the connecting water pipe 4 and the water inlet pipe 5 are in opposite directions; the metering cylinder 2 and the fixed drain pipe 3 are connected through the connecting water pipe 4; a functional connecting cylinder 17 that cooperates with the fixed drain pipe 3 is arranged inside the fixed drain pipe 3, and a water inlet hole that cooperates with the connecting water pipe 4 is arranged on the functional connecting cylinder 17; a sealing mechanism that cooperates with the functional connecting cylinder 17 is arranged inside the fixed frame 1, and the sealing mechanism is connected to the metering mechanism; the other end of the water inlet pipe 5 is connected to a water source, and bottled water is filled below the fixed drain pipe 3.

[0029] A metering mechanism that cooperates with the piston plate 18 is installed inside the fixed frame 1. This metering mechanism is responsible for driving the piston plate 18 to perform precise reciprocating motion. One-way valve mechanisms are installed in both the connecting water pipe 4 and the inlet water pipe 5, and the one-way valve mechanisms in the connecting water pipe 4 and the inlet water pipe 5 are in opposite directions. The one-way valve mechanism in the inlet water pipe 5 allows liquid to flow from the water source into the metering cylinder 2, but prevents it from flowing back to the water source. The one-way valve mechanism in the connecting water pipe 4 allows liquid to flow from the metering cylinder 2 to the fixed drain pipe 3, but prevents it from flowing back into the metering cylinder 2. The metering cylinder 2 and the fixed drain pipe 3 are connected through the connecting water pipe 4, forming a complete liquid transfer path. When the piston plate 18 rises, the one-way valve mechanism of the inlet water pipe 5 opens, and liquid is drawn into the metering cylinder 2; when the piston plate 18 falls, the one-way valve mechanism of the connecting water pipe 4 opens, and the metered liquid is forced into the fixed drain pipe 3.

[0030] The fixed drain pipe 3 is equipped with a functional connecting cylinder 17 that cooperates with it. The functional connecting cylinder 17 is a sleeve structure that can move up and down and rotate, and is provided with a water inlet hole that cooperates with the connecting water pipe 4. The functional connecting cylinder 17 is a cylinder with a side opening. When it moves to a specific position, the water inlet hole is aligned with the outlet of the connecting water pipe 4, allowing liquid to flow in.

[0031] The fixed frame 1 is equipped with a sealing mechanism that cooperates with the functional connecting cylinder 17, and the sealing mechanism is connected to the metering mechanism. The function of this sealing mechanism is to seal the fixed drain pipe 3 after filling to prevent leakage. The other end of the water inlet pipe 5 is connected to a water source to continuously supply liquid to the filling system. Bottled water is directly filled below the fixed drain pipe 3, that is, the metered liquid is directly injected into the bottled water container placed below it through the fixed drain pipe 3.

[0032] The filling valve structure of the bottled water production line in this embodiment achieves precise control of the filling water volume through the synergistic action of the piston plate 18 and the metering mechanism, effectively solving the problem of insufficient metering accuracy in traditional filling valves. Simultaneously, through the strict control of the water flow direction by the one-way valve mechanism and the cooperation between the sealing mechanism and the functional connecting cylinder 17, the outlet can be quickly and reliably sealed after filling, significantly reducing liquid leakage, avoiding material waste and production line contamination, thereby improving the efficiency, product quality, and hygiene standards of bottled water production.

[0033] In some of the embodiments described above in this application, a quantitative mechanism is proposed to control the piston plate to achieve accurate metering. However, in the process of its implementation, the piston plate may move unevenly due to the asymmetry or inconsistent response of the control mechanism, which affects the metering accuracy. In particular, it is easily affected by pressure fluctuations and temperature changes under high-speed filling, resulting in excessive deviation in filling volume, which makes it difficult to meet the lean requirements of switching production of multi-specification bottled water.

[0034] In response, this application further proposes an improved metering mechanism, which includes a rotating internal gear 6 rotatably connected within a fixed frame 1, a driving wheel 7 rotatably connected within the fixed frame 1 and meshing with the rotating internal gear 6, and a pair of driven wheels 8 rotatably connected within the fixed frame 1, both of which mesh with the rotating internal gear 6. The meshing positions of the driven wheels 8 and the rotating internal gear 6 are symmetrically arranged within the rotating internal gear 6. A pair of lifting studs 9 are fixedly connected above the piston plate 18, and the lifting studs 9 are screwed to the corresponding driven wheels 8 respectively.

[0035] The metering mechanism described here is a device for accurately measuring and controlling the volume of liquid discharged. It typically includes a cavity with a defined volume and a movable element, such as a piston plate 18, which precisely discharges a preset volume of liquid by displacement.

[0036] Through the above technical solution, the driving wheel 7 drives the rotating internal gear 6 to rotate, and the rotating internal gear 6 then drives the lifting studs 9 to rotate synchronously through the symmetrically arranged driven wheels 8. Since the meshing positions of the driven wheels 8 and the rotating internal gear 6 are symmetrically arranged, and the piston plate 18 is screwed to the driven wheels 8 through a pair of lifting studs 9, this symmetrical transmission structure ensures that the piston plate 18 is subjected to uniform force during lifting, avoiding the problems of uneven load and unstable movement caused by unilateral drive or asymmetrical structures. The smooth lifting and lowering movement of the piston plate 18 effectively improves the accuracy and consistency of liquid metering in the metering cylinder 2. Especially in high-speed filling scenarios, it can effectively suppress the impact of medium pressure fluctuations and temperature changes on metering accuracy, thereby achieving more precise filling volume control. Furthermore, this structure has high response consistency, better adapting to the needs of switching between multiple varieties and specifications of bottled water production, reducing filling volume deviation, reducing raw material waste, and improving production efficiency and product qualification rate.

[0037] This application further proposes that a connecting slide rod 10 is fixedly connected above the piston plate 18, a linkage tooth block 11 is fixedly connected to the connecting slide rod 10, a large linkage gear 12 that cooperates with the linkage tooth block 11 is rotatably connected inside the fixed frame 1, and a small linkage gear 13 that meshes with the large linkage gear 12 is rotatably connected inside the fixed frame 1.

[0038] The linkage block 11 is a key component connected to the slide rod 10. Its function is to trigger the sealing mechanism when the metering mechanism operates. When the slide rod 10 drives the linkage block 11 to move upward in a straight line, it engages with the linkage gear 12, thereby transmitting a water injection signal. Upon receiving this signal, the sealing mechanism opens the fixed drain pipe 3. When the metering cylinder stores the corresponding amount of water, the motor rotates in the reverse direction to fill the water tank. At this time, the sealing mechanism is fully open. When water filling is complete, the linkage block, through the linkage gear, re-seals the sealing mechanism, effectively preventing leakage of liquid after filling and maintaining the cleanliness of the production line and the neatness of the product appearance. The entire linkage mechanism closely links the movement of the piston plate 18 with the external control system, facilitating automation and intelligent control, and improving production efficiency and reliability.

[0039] In some of the embodiments described above in this application, a sealing mechanism is proposed to prevent dripping during the filling process and to ensure the precise alignment of the water flow channel. However, in its implementation, the reliability and durability of the sealing mechanism are insufficient, which may lead to aging and deformation of the sealing components or misalignment, causing dripping and affecting the cleanliness of the filling and production efficiency.

[0040] In response, this application further proposes a sealing mechanism including an adjusting sealing mechanism and a physical sealing mechanism; the adjusting sealing mechanism includes a coaxial large gear 14 rotatably connected inside the fixed frame 1, the coaxial large gear 14 being coaxially fixed to the linkage small gear 13, a lifting gear plate 15 slidably connected inside the fixed frame 1 and meshing with the coaxial large gear 14, a fixed rotating block 16 fixedly connected below the lifting gear plate 15, and the fixed rotating block 16 being rotatably connected to the functional connecting cylinder 17; a limiting slider 22 is fixedly attached to the outer surface of the functional connecting cylinder 17, and a limiting groove 23 that cooperates with the limiting slider 22 is provided on the inner surface of the fixed drain pipe 3; when the functional connecting cylinder 17 rises, it will rotate because the limiting slider 22 slides in the limiting groove 23, thereby realizing that the water inlet on the functional connecting cylinder 17 corresponds to the connection hole of the connecting water pipe 4 and the fixed drain pipe 3; a drain ring 21 is fixedly attached below the functional connecting cylinder 17, and multiple through holes are provided on the drain ring 21, which are connected to the inside of the functional connecting cylinder 17.

[0041] The sealing mechanism is designed to consist of two parts: an adjusting seal mechanism and a physical seal mechanism. These components work synergistically to enhance the reliability and durability of the overall seal. The adjusting seal mechanism is primarily responsible for achieving precise alignment and dynamic sealing of the water flow channels during filling, while the physical seal mechanism provides the final, robust physical barrier to prevent dripping. This dual-mechanism design effectively addresses the limitations that may exist with a single sealing structure, such as material aging or misalignment.

[0042] The coaxial large gear 14 and the linkage small gear 13 are coaxially fixed, meaning they share the same rotating shaft and rotate synchronously. The linkage small gear 13 is typically part of the metering mechanism or the piston plate 18 linkage system, and its rotation reflects the piston movement or metering status during the filling process. This coaxial connection allows the adjustment and sealing mechanism to be precisely synchronized with the overall operation of the filling valve, ensuring that the sealing action occurs at the appropriate time and avoiding seal failure due to asynchrony.

[0043] A limiting slider 22 is fixedly attached to the outer surface of the functional connecting cylinder 17. Meanwhile, a limiting groove 23 that mates with the limiting slider 22 is provided on the inner surface of the fixed drain pipe 3. Furthermore, the fixed rotating block 16 and the functional connecting cylinder 17 are rotatably connected. This ensures that while the functional connecting cylinder 17 moves up and down with the fixed rotating block 16, it can also rotate around its axis.

[0044] The purpose of this rotation mechanism is to achieve precise alignment between the water inlet on the functional connecting cylinder 17 and the connection holes of the connecting water pipe 4 and the fixed drain pipe 3. The preset groove shape ensures that when the functional connecting cylinder 17 reaches a specific height, its water inlet can accurately connect to the external water path, thus forming a smooth water flow channel. A drain ring 21 is fixedly connected to the bottom of the functional connecting cylinder 17; the drain ring 21 has multiple through holes; these through holes connect to the interior of the functional connecting cylinder 17. These through holes are the channels through which the filling water finally exits and enters the bottled water; the design of multiple through holes helps to achieve uniform water flow dispersion, reduce impact, and ensure filling efficiency.

[0045] Through the above technical solution, this application significantly improves the sealing reliability and durability of the filling valve by introducing a dual sealing design of an adjusting sealing mechanism and a physical sealing mechanism. The adjusting sealing mechanism achieves precise synchronization between the sealing action and the metering mechanism through the coaxial connection of the large coaxial gear 14 and the small linkage gear 13, ensuring timely response and accurate positioning of the sealing components during the filling cycle. The synergistic action of the lifting toothed plate 15, the fixed rotating block 16, the limiting slider 22, and the limiting groove 23 constructs a precise mechanical alignment system, enabling the functional connecting cylinder 17 to rotate automatically and precisely during the lifting process, ensuring perfect alignment between its water inlet and the connection holes of the connecting water pipe 4 and the fixed drain pipe 3. This dynamic alignment mechanism effectively avoids initial dripping and water flow impact caused by misalignment, ensuring the cleanliness of the filling process. At the same time, the design of the drain ring 21 and its multiple through holes not only ensures smooth water discharge but also provides a stable support foundation for the physical sealing mechanism, further enhancing the anti-drip effect. Overall, this structure effectively solves the problems of insufficient reliability of sealing mechanisms, easy aging and deformation, and leakage caused by inaccurate positioning in existing technologies through mechanical linkage and precise alignment, thereby significantly improving the filling accuracy, cleanliness and production efficiency of bottled water production lines.

[0046] This application further proposes a physical sealing mechanism, which includes a sealing block 20 fixedly attached below the drain ring 21, and an inner fixed sealing ring 19 that cooperates with the sealing block 20 is provided inside the fixed drain pipe 3.

[0047] The sealing plug 20 is a component used to physically block the flow of liquid after filling. It achieves a sealing function by forming a tight contact with the inner fixed plug ring 19.

[0048] The internal fixed plug ring 19 is an annular structure set inside the fixed drain pipe 3. Its function is to provide a stable and precise mating surface for the sealing plug 20 so that it can form a tight fit with the sealing plug 20 when the filling valve is closed, and together achieve physical sealing.

[0049] This application further proposes that the sealing block 20 is made of rubber and has a boss shape.

[0050] The sealing block 20 is made of rubber. Rubber, as a high-molecular-weight elastic material, possesses excellent elasticity, wear resistance, water resistance, and chemical corrosion resistance. Furthermore, the sealing block 20 is designed in a boss-like shape. A boss shape means that the contact surface or main body of the sealing block 20 is designed with a raised shape of a certain height and slope. This shape expands radially under pressure, thereby achieving a tighter fit and a more reliable sealing effect.

[0051] This application further proposes a one-way valve mechanism including a fixed ring 25 and a fixed seat 26 fixedly connected inside the water inlet pipe 5. A movable slide column 27 is slidably connected inside the fixed seat 26. A sealing plate 24 that cooperates with the fixed ring 25 is fixedly connected to one end of the movable slide column 27. A protective plate 28 is fixedly connected to the other end of the movable slide column 27. A return spring 29 is sleeved on the movable slide column 27. One end of the return spring 29 is fixedly connected to the protective plate 28, and the other end of the return spring 29 is fixedly connected to the fixed seat 26.

[0052] Through the above technical solution, the structural design of the one-way valve mechanism is optimized, effectively solving the problems of sealing failure and leakage caused by the easy aging and deformation of sealing components. Specifically, the fixed ring 25 and the fixed bracket 26 provide a stable installation foundation for the entire mechanism, ensuring precise alignment of the components. The sliding connection of the movable slide 27 within the fixed bracket 26 allows the sealing plate 24 to respond quickly according to water pressure, realizing the dynamic opening and closing of the valve. When the water flow direction is normal, the water pressure pushes the movable slide 27, causing the sealing plate 24 to move away from the fixed ring 25, allowing water to flow through; when the water flow is reversed or the pressure decreases, the constant restoring force provided by the return spring 29 pushes the movable slide 27 back, causing the sealing plate 24 to fit tightly against the fixed ring 25, forming a reliable seal, effectively blocking reverse water flow and preventing leakage. The protective plate 28 further protects the internal moving parts and extends the service life of the mechanism. This collaborative design not only enhances the sealing performance of the one-way valve, ensuring unidirectional water flow, but also improves the durability and response efficiency of the mechanism, fundamentally eliminating the risk of leakage, reducing raw material waste and production line pollution, and ensuring the cleanliness of the filling process and product quality.

[0053] The working process of this invention is as follows: When an empty barrel is conveyed to the filling position, the filling valve begins a filling cycle. First, the system initiates the metering phase. The reciprocating motor inside the fixed frame 1 starts working, driving the drive wheel 7 to rotate. The drive wheel 7 meshes with the rotating internal gear 6, driving the rotating internal gear 6 to rotate. The rotating internal gear 6 simultaneously meshes with a pair of driven wheels 8, and the rotation of the driven wheels 8 drives the lifting stud 9 above the piston plate 18 to move upward through a threaded connection. The precise displacement of the lifting stud 9 controls the upward stroke of the piston plate 18 within the metering cylinder 2.

[0054] As the piston plate 18 rises, a negative pressure is created inside the metering cylinder 2. At this time, the water inlet pipe 5 connects to the external water source, and its internal one-way valve mechanism opens under water pressure. The sealing plate 24 disengages from the fixing ring 25, allowing water to enter the metering cylinder 2 from the water source through the water inlet pipe 5. During this process, the one-way valve mechanism inside the connecting water pipe 4 remains closed to prevent water from flowing to the fixed drain pipe 3. When the piston plate 18 descends to the preset position, the metering cylinder 2 is precisely filled with the required volume of water. Unlike traditional flow meters that are susceptible to inaccurate measurement due to water pressure fluctuations, this structure achieves measurement through the precise volume displacement of the piston plate 18, ensuring a highly consistent filling volume for each barrel of water.

[0055] During this process, when the piston plate 18 initially moves upward, the connecting slide rod 10 drives the linkage block 11 to move upward. The linkage block 11 meshes with the linkage large gear 12, which in turn drives the linkage small gear 13, which is coaxial with it, to rotate. The linkage small gear 13 is coaxially fixed to the coaxial large gear 14, thereby driving the coaxial large gear 14 to rotate. The coaxial large gear 14 meshes with the lifting gear plate 15, causing the lifting gear plate 15 to slide upward. The fixed rotating block 16 below the lifting gear plate 15 rises accordingly, driving the functional connecting cylinder 17 and the sealing block 20 to rise. Under the action of the limiting slider 22 and the limiting slide groove 23, the functional connecting cylinder 17 will automatically rotate during its ascent, thereby opening the fixed drain pipe 3. After the fixed drain pipe 3 is opened, the linkage block 11 meshes and disengages with the linkage large gear 12, and the sealing mechanism is thus opened, preparing for subsequent drainage.

[0056] Subsequently, the system enters the filling stage. The reciprocating motor reverses its direction, and the piston plate 18 begins to move downwards, squeezing the precisely metered water in the metering cylinder 2 downwards. At this time, the one-way valve mechanism in the water inlet pipe 5 closes under water pressure to prevent water from flowing back to the water source. The one-way valve mechanism in the connecting water pipe 4 opens, and the water flows through the connecting water pipe 4, enters the water inlet of the aligned functional connecting cylinder 17, and then passes through multiple through holes on the drain ring 21, finally being precisely and leak-free filled into the bottled water container below from below the fixed drain pipe 3.

[0057] Upon completion of filling, the linkage gear 11 and the linkage large gear 12 re-engage, but this time their movements are in opposite directions. The functional connecting cylinder 17 descends and rotates in the opposite direction, causing the water inlet to misalign with the connecting hole of the connecting water pipe 4. Simultaneously, the sealing block 20 and the inner fixed sealing ring 19 re-engage tightly, forming a reliable physical seal. The entire filling valve structure returns to its initial state, ready for the next filling cycle. The engagement between the linkage gear 11 and the linkage large gear 12, along with the large gear ratio between the linkage large gear 12 and the linkage small gear 13, results in an instantaneous linkage time. Furthermore, since the connecting water pipe transports water from low to high when supplying water to the functional connecting cylinder, when the metering mechanism stops, the water in the connecting water pipe loses its power source, thus achieving a sealing effect. This collaborative working method ensures accurate metering and leak-free operation throughout the filling process, significantly improving production efficiency and product quality.

[0058] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

Claims

1. A precise metering and anti-drip structure for a filling valve in a bottled water production line, characterized in that: The utility model provides a kind of water filling machine, including fixed rack (1), fixed rack (1) below is provided with fixed drain pipe (3) and ration cylinder (2), ration cylinder (2) below is provided with connecting water pipe (4) and inlet pipe (5), ration cylinder (2) is provided with piston plate (18) in cooperation with connecting water pipe (4) and inlet pipe (5), fixed rack (1) is provided with ration mechanism in cooperation with piston plate (18);Connecting water pipe (4) and inlet pipe (5) are provided with one-way valve mechanism, the direction of one-way valve mechanism in connecting water pipe (4) and inlet pipe (5) is opposite;Ration cylinder (2) and fixed drain pipe (3) are connected by connecting water pipe (4);Fixed drain pipe (3) is provided with function connecting cylinder (17) in cooperation therewith, and function connecting cylinder (17) is provided with water inlet hole in cooperation with connecting water pipe (4);Fixed rack (1) is provided with sealing mechanism in cooperation with function connecting cylinder (17), and sealing mechanism is connected with ration mechanism;Inlet pipe (5) other end is connected with water source, and fixed drain pipe (3) below is filled to barrel-packed water.

2. The precision metering and drip prevention structure of the filling valve of the bottled water production line according to claim 1, characterized in that: The ration mechanism includes a rotating internal gear (6) rotatably connected in the fixed rack (1), a driving wheel (7) rotatably connected in the fixed rack (1) and engaged with the rotating internal gear (6), a pair of driven wheels (8) rotatably connected in the fixed rack (1) and engaged with the rotating internal gear (6), the engagement positions of the driven wheels (8) with the rotating internal gear (6) are symmetrically arranged in the rotating internal gear (6), a pair of lifting studs (9) are fixedly connected above the piston plate (18), and the lifting studs (9) are respectively screwed with the corresponding driven wheels (8).

3. The precision metering and drip prevention structure of the filling valve of the bottled water production line according to claim 1, characterized in that: The driving wheel (7) is coaxially fixedly connected with a reciprocating motor.

4. The precision metering and drip prevention structure of the filling valve of the bottled water production line according to claim 1, characterized in that: The piston plate (18) is fixedly connected with a connecting slide rod (10) above, the connecting slide rod (10) is fixedly connected with a linkage tooth block (11), the fixed rack (1) is rotatably connected with a linkage gear wheel (12) matched with the linkage tooth block (11), and the fixed rack (1) is rotatably connected with a linkage pinion (13) engaged with the linkage gear wheel (12).

5. The precision metering and drip prevention structure of the filling valve of the bottled water production line according to claim 1, characterized in that: The gear ratio of the linkage gear wheel (12) to the linkage pinion (13) is 10:

1.

6. The precision metering and drip prevention structure of a filling valve of a bottled water production line according to claim 1, characterized in that: The sealing mechanism comprises an adjusting sealing mechanism and a physical sealing mechanism; the adjusting sealing mechanism comprises a coaxial gear (14) rotatably connected in a fixed frame (1), the coaxial gear (14) is fixedly connected with a linkage pinion (13), the fixed frame (1) is slidably connected with a lifting toothed plate (15) engaged with the coaxial gear (14), a fixed rotating block (16) is fixedly connected below the lifting toothed plate (15), the fixed rotating block (16) is rotatably connected with a function connecting cylinder (17); the function connecting cylinder (17) is fixedly connected with a limiting sliding block (22) on the outer surface, the fixed drain pipe (3) is provided with a limiting sliding groove (23) matched with the limiting sliding block (22) on the inner surface; when the function connecting cylinder (17) is rising, the limiting sliding block (22) is slid in the limiting sliding groove (23) to rotate, so that the water inlet hole on the function connecting cylinder (17) is matched with the connecting hole of the fixed drain pipe (3) and the connecting water pipe (4); the function connecting cylinder (17) is fixedly connected with a drain ring (21) below, the drain ring (21) is provided with a plurality of through holes connected with the inside of the function connecting cylinder (17).

7. The precision metering and drip prevention structure of a filling valve of a bottled water production line according to claim 1, characterized in that: The physical sealing mechanism comprises a sealing block (20) fixedly connected below the drain ring (21), the fixed drain pipe (3) is provided with an inner fixed block ring (19) matched with the sealing block (20).

8. The precision metering and drip prevention structure of a filling valve of a bottled water production line according to claim 1, characterized in that: The sealing block (20) is made of rubber and has a boss shape.

9. The precision metering and drip prevention structure of a filling valve of a bottled water production line according to claim 1, characterized in that: The one-way valve mechanism comprises a fixed ring (25) and a fixed clamping seat (26) fixedly connected in the water inlet pipe (5), the fixed clamping seat (26) is slidably connected with a movable sliding column (27), one end of the movable sliding column (27) is fixedly connected with a sealing plate (24) matched with the fixed ring (25), the other end of the movable sliding column (27) is fixedly connected with a protection plate (28), the movable sliding column (27) is sleeved with a return spring (29), one end of the return spring (29) is fixedly connected with the protection plate (28), and the other end of the return spring (29) is fixedly connected with the fixed clamping seat (26).

Images