A fill valve structure with integrated upper distributor

Abstract

The application discloses a filling valve structure integrated with an upper distributor, which comprises a valve body, a valve core body and an upper distributor, the valve core body is arranged in the valve body, one end of the valve core body is fixedly connected with a rubber conical valve head, the other end of the valve core body is fixedly connected with a threaded valve rod, the threaded valve rod is threadedly connected with a threaded sleeve arranged in the valve body, the threaded sleeve is fixedly connected with an output end of a servo motor fixed to the outer wall of the valve body, and the upper distributor comprises a distribution module one, a pressure relief module, a distribution module two and a distribution module three arranged in layers from bottom to top. The upper distributor of the application adopts a four-layer layered structure of the distribution module one, the pressure relief module, the distribution module two and the distribution module three, cooperates with an inner pipe flow channel and an annular outer flow channel of a pipe body to form a double-layer independent flow channel structure, and combines with multiple groups of independent distribution cavities in the distribution module two to realize medium distribution, pressure relief, shunt multi-functional independent partition operation, and each pipeline and cavity do not interfere with each other.

Description

Technical Field

[0001] This invention relates to the field of liquid filling equipment technology, specifically to a filling valve structure with an integrated upper distributor. Background Technology

[0002] Filling valves are the core actuators of liquid filling production lines and are widely used in automated filling operations in industries such as food, beverage, daily chemicals, pharmaceuticals, and fine chemicals. Their structural integration, sealing performance, flow control accuracy, and media distribution rationality directly determine the production accuracy, hygiene level, and operational stability of filling equipment.

[0003] Currently, in existing filling equipment, filling valves and upper distributors generally adopt a split assembly structure, assembled through external pipelines and connecting flanges. The overall structure is fragmented with numerous connecting parts, resulting in a large number of potential leakage points. Long-term operation is prone to problems such as media leakage and air pressure leakage, which not only wastes materials but also easily causes equipment contamination, making it difficult to meet the requirements of high-cleanliness filling production. At the same time, traditional upper distributors are mostly single-chamber universal structures with a single flow channel and low functional integration. They cannot achieve independent zoning operations for distribution, pressure relief, and flow diversion. During production, media mixing and material residue are prone to occur, online cleaning is difficult, batch cross-contamination is likely to occur, and the equipment has poor versatility.

[0004] In addition, traditional filling valves mostly use direct-push cylinder drive, with a fixed valve core opening and closing stroke, making it impossible to accurately adjust the opening and filling flow rate according to working conditions, resulting in low filling accuracy. Furthermore, the valve core lacks a dedicated limiting and guiding structure, making it prone to radial swaying and offset during reciprocating opening and closing, leading to uneven sealing surface contact, severe wear, a high probability of seal failure, and a short equipment lifespan. Simultaneously, the traditional distribution module splicing structure is simple, lacking precise alignment and multi-stage sealing structures, resulting in large assembly deviations and easy leakage of liquid and gas between splices. This leads to insufficient equipment operational stability and filling accuracy, making it unsuitable for the demands of modern high-precision, multi-condition, and continuous automated filling production. Summary of the Invention

[0005] The purpose of this invention is to provide a filling valve structure with an integrated upper dispenser to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a filling valve structure with an integrated upper distributor, comprising a valve body, a valve core, and an upper distributor, wherein the valve core is disposed inside the valve body, one end of which is fixedly connected to a rubber conical valve head, and the other end is fixedly connected to a threaded valve stem, the threaded valve stem being threadedly connected to a threaded sleeve disposed inside the valve body, and the threaded sleeve being fixedly connected to the output end of a servo motor fixed to the outer wall of the valve body; The upper distributor is sealed and assembled on the discharge seat at the top of the valve body, and the upper distributor includes a distribution module one, a pressure relief module, a distribution module two, and a distribution module three stacked from bottom to top.

[0007] Furthermore, a feed seat is fixedly provided at the front end of the valve body, and an inlet pipe is fixedly connected to the outside of the feed seat. An expansion conical groove is opened inside the valve body at the position corresponding to the output end of the inlet pipe. The outer conical surface of the rubber conical valve head is adapted to fit the groove wall of the expansion conical groove to achieve sealing opening and closing.

[0008] Furthermore, guide grooves are provided on both inner walls and the bottom of the valve body. The guide grooves extend along the axial movement direction of the valve core. A slider is integrally formed on the outer wall of the valve core. The slider extends and slides inside the guide groove to limit and guide the movement of the valve core.

[0009] Furthermore, the mating ends of the distribution module 1, the pressure relief module, and the distribution module 2 are all sealed and fixedly connected by flanges. A mating seat is fixedly installed at the top of the distribution module 2, and a mating sleeve is fixedly installed at the bottom of the distribution module 3. The mating sleeve and the mating seat are precisely mated and fixed. The side walls of the distribution module 1, the pressure relief module, the distribution module 2, and the distribution module 3 are all evenly equipped with distribution pipe 1, the pressure relief pipe, distribution pipe 2, and distribution pipe 3, and each pipe is independently connected to the internal cavity of the corresponding module.

[0010] Furthermore, an inner tube is fixedly installed at the center of the docking sleeve. The top end of the inner tube extends to the top of the distribution module three and is fixedly installed with a sealing cover. The bottom end of the inner tube penetrates the distribution module two and extends into the interior of the pressure relief module. A through internal flow channel is opened inside the inner tube, and the internal flow channel vertically connects the internal chambers of the pressure relief module and the distribution module three.

[0011] Furthermore, the outer wall of the inner tube body and the inner wall of the distribution module two form an annular external flow channel. The distribution module two is evenly divided into several independent distribution chambers from top to bottom. Each independent distribution chamber has a hole in its wall. Each independent distribution chamber is connected to the external flow channel through the hole. The external flow channel is vertically connected to the pressure relief module and the internal chamber of the distribution module two.

[0012] Furthermore, sealing rings are embedded in the assembly gaps between the upper and lower ends of the threaded sleeve and the valve body, as well as in the sliding fit gaps between the valve core and the valve body. A wear-resistant and corrosion-resistant sealing layer is provided on the surface of the rubber conical valve head to achieve a multi-level sealing and leak-proof structure.

[0013] Furthermore, a sealing gasket is embedded on the mating end face of the flange, an annular sealing ring is provided on the mating contact surface of the mating seat and the mating sleeve, and an alignment and positioning structure is provided between the mating seat and the mating sleeve to ensure the assembly accuracy and sealing performance of the module.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the filling valve structure of the integrated upper dispenser 1. This invention integrates the layered upper distributor into a sealed assembly at the top of the valve body, replacing the traditional separate structure of the filling valve and distributor. This significantly reduces external pipelines, connecting flanges, and other connecting components, thereby reducing leakage points at the source, simplifying the overall equipment structure, reducing the difficulty of equipment assembly and subsequent maintenance, and effectively avoiding media and air pressure leakage problems, thus improving the stability of equipment operation.

[0015] 2. The upper distributor of the present invention adopts a four-layer structure consisting of distribution module one, pressure relief module two, distribution module three, and distribution module three. It forms a double-layer independent flow channel structure with the inner pipe internal flow channel and the outer pipe external annular flow channel. Combined with the multiple independent distribution cavities inside distribution module two, it realizes multi-functional independent zoned operation of medium distribution, pressure relief, and flow diversion. Each pipeline and cavity does not interfere with each other, completely eliminating the problem of material mixing.

[0016] 3. This invention uses a servo motor to drive the rotation of the threaded sleeve, which in turn drives the threaded valve stem and valve core to move axially through the threaded transmission. Compared with the traditional cylinder direct-push fixed stroke opening and closing structure, it can precisely control the movement stroke of the valve core and the opening degree of the valve head, realize stepless adjustment of filling flow, and adapt to the fine filling operation of media with different capacity and viscosity, which greatly improves the filling accuracy and equipment versatility.

[0017] 4. This invention uses the sliding fit structure of the guide groove inside the valve body and the slider on the outer wall of the valve core to precisely limit and guide the axial movement of the valve core, effectively limiting the radial offset and swaying of the valve core during operation, ensuring that the rubber conical valve head and the expanding conical groove are always precisely fitted for opening and closing, avoiding problems such as uneven wear of the sealing surface, greatly improving the service life of the sealing structure, and reducing the probability of equipment failure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2This is a three-dimensional structural diagram of the upper distributor of the present invention; Figure 3 This is a schematic diagram of the unfolded structure of the upper distributor of the present invention; Figure 4 This is a schematic diagram of the two-section structure of the distribution module of the present invention; Figure 5 This is a schematic diagram of the internal structure of the valve body of the present invention; In the diagram: 1. Servo motor; 2. Valve body; 3. Inlet pipe; 4. Upper distributor; 5. Distributor pipe one; 6. Distributor module one; 7. Pressure relief module; 8. Distributor module two; 9. Distributor module three; 10. Connecting sleeve; 11. Encapsulation cover; 12. Distributor pipe three; 13. Inner tube body; 14. Connecting seat; 15. Independent distribution chamber; 16. Distributor pipe two; 17. Pressure relief pipe; 18. Flange; 19. Hole; 20. Threaded valve stem; 21. Outer flow channel; 22. Inner flow channel; 23. Valve core body; 24. Discharge seat; 25. Rubber conical valve head; 26. Feed seat; 27. Expanding conical groove; 28. Slider; 29. ​​Guide groove; 30. Threaded sleeve. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-5 One embodiment of the present invention is a filling valve structure with an integrated upper distributor, comprising a valve body 2, a valve core 23, and an upper distributor 4.

[0022] The valve core 23 is installed at the center of the valve body 2. The bottom end of the valve core 23 is fixedly fitted with a rubber conical valve head 25, and the top end of the valve core 23 is fixedly fitted with a threaded valve stem 20.

[0023] The threaded valve stem 20 and the threaded sleeve 30 arranged inside the valve body 2 form a threaded transmission fit structure. The threaded sleeve 30 is fixedly connected to the output end of the servo motor 1 fixed on the outer wall of the valve body 2. The servo motor 1 can drive the threaded sleeve 30 to rotate, thereby driving the threaded valve stem 20 and the valve core 23 to move axially as a whole, so as to realize the automatic adjustment of the valve body opening degree.

[0024] This embodiment adopts a servo threaded transmission structure to replace the traditional cylinder fixed stroke opening and closing structure, which can realize flexible and precise control of valve core opening and adapt to various filling production conditions.

[0025] The upper distributor 4 is fixed to the end face of the discharge seat 24 set on the top of the valve body 2 using a sealed assembly method. The upper distributor 4 adopts a layered modular integrated structure, with the first distribution module 6, the pressure relief module 7, the second distribution module 8, and the third distribution module 9 stacked sequentially from bottom to top.

[0026] This embodiment integrates multiple functional modules into a single unit, replacing the traditional separate distribution pipeline layout. This significantly simplifies the overall equipment structure, reduces the risk of leakage from external pipelines, and integrates multiple functions such as distribution, pressure relief, and diversion, thereby improving the equipment's integration and operational functionality.

[0027] The valve body 2 is fixedly assembled with a feed seat 26 at the front end. The feed seat 26 is fixedly connected to the liquid inlet pipe 3 at the outer end. An expansion conical groove 27 is opened in the valve body 2 corresponding to the medium output area of ​​the liquid inlet pipe 3. The outer conical surface of the rubber conical valve head 25 and the groove surface structure of the expansion conical groove 27 are adapted and fitted to each other. The sealing and closing and conduction opening of the conical groove channel are achieved by the movement and displacement of the valve core 23.

[0028] This embodiment adopts a conical surface bonding and sealing structure, which has a large sealing contact area and high bonding accuracy, effectively improving the sealing performance of the valve body during opening and closing, avoiding the problems of dripping and seepage during filling, and is suitable for media filling operations with high sealing requirements.

[0029] Guide grooves 29 are provided on both sides of the inner wall and at the bottom of the valve body 2. The guide grooves 29 extend along the axial movement direction of the valve core 23. A slider 28 is integrally formed on the outer wall of the valve core 23. The slider 28 extends and is embedded in the guide groove 29 to form a sliding fit structure, which can limit and guide the movement of the valve core 23 throughout its entire range.

[0030] This embodiment uses a multi-position guide and limiting structure to effectively limit the radial offset and swaying of the valve core 23 during reciprocating motion, ensuring the coaxiality and stability of the valve core movement, avoiding uneven wear of the sealing surface, and extending the service life of the overall sealing structure.

[0031] The mating surfaces of distribution module 1 (6), pressure relief module 7, and distribution module 2 (8) are all sealed and fixedly connected by flange 18. The top of distribution module 2 (8) is fixedly installed with a docking seat 14, and the bottom of distribution module 3 (9) is fixedly installed with a docking sleeve 10. The docking sleeve 10 and the docking seat 14 are precisely engaged and connected to complete the fixed assembly.

[0032] The side wall positions of distribution module 1 (6), pressure relief module 7, distribution module 2 (8), and distribution module 3 (9) are respectively equipped with distribution pipe 1 (5), pressure relief pipe 17, distribution pipe 2 (16), and distribution pipe 3 (12). Each pipe is independently connected to the internal cavity of the corresponding functional module and does not interfere with each other.

[0033] This embodiment adopts a modular assembly method of flange docking and snap-fit ​​positioning, which is convenient to disassemble and assemble and precise in alignment. At the same time, multiple pipelines are independently laid out to realize independent operation of media distribution, pressure relief and diversion in different zones, and eliminate the phenomenon of media mixing.

[0034] The inner tube 13 is fixedly installed at the center of the docking sleeve 10. The top of the inner tube 13 extends to the top of the distribution module 3 9 and is fixedly assembled with the encapsulation cover 11 to achieve end sealing. The bottom of the inner tube 13 passes through the distribution module 2 8 and extends into the internal cavity of the pressure relief module 7. A vertically penetrating internal flow channel 22 is opened inside the inner tube 13, and the internal flow channel 22 vertically connects the internal cavity of the pressure relief module 7 and the distribution module 3 9.

[0035] This embodiment uses a through-type internal flow channel structure to achieve the interconnection of media and air pressure between the upper module and the pressure relief module, stably complete the pressure relief and pressure regulation operation, ensure the pressure balance in the valve body, and improve the stability of the filling operation.

[0036] The outer wall of the inner tube 13 and the inner wall of the distribution module 28 form an annular outer flow channel 21. The interior of the distribution module 28 is evenly divided from top to bottom to form multiple independent distribution cavities 15. Each independent distribution cavity 15 has a hole 19 in its cavity wall. All independent distribution cavities 15 are connected to the outer flow channel 21 through the corresponding hole 19. The outer flow channel 21 is vertically connected to the pressure relief module 7 and the internal cavity of the distribution module 28.

[0037] This embodiment adopts a structure with inner and outer double-layer flow channels and multiple independent distribution chambers to form multiple independent media flow channels. The flow channel layout is regular and the zoning is clear, which can realize the synchronous distribution of multiple media, while effectively avoiding media residue and facilitating the overall online cleaning and disinfection of the equipment.

[0038] The assembly gaps between the upper and lower ends of the threaded sleeve 30 and the valve body 2, and the sliding fit gaps between the valve core 23 and the valve body 2, are all fitted with suitable sealing rings. The surface of the rubber conical valve head 25 is treated with a wear-resistant and corrosion-resistant sealing coating, which together constitute a multi-stage sealing and leak-proof structure for the valve body.

[0039] This embodiment uses a multi-position, multi-level sealing structure design to seal assembly gaps and movement gaps in all directions, effectively preventing media leakage and air pressure leakage, while improving the wear resistance and corrosion resistance of the valve head, making it suitable for filling operations of various corrosive and high-cleanliness media.

[0040] A sealing gasket is installed on the mating end face of the flange 18, and an annular sealing ring is installed on the mating contact surface of the mating seat 14 and the mating sleeve 10. At the same time, a matching positioning structure is provided between the mating seat 14 and the mating sleeve 10.

[0041] This embodiment effectively ensures the coaxiality and fit of each functional module through the sealing fit and precise alignment structure at the docking position, avoiding flow channel misalignment and poor sealing caused by assembly deviation, and further improving the overall assembly accuracy and operational sealing of the equipment.

[0042] In this embodiment of the application, when the equipment is not in operation for filling, the servo motor 1 remains stationary and the threaded sleeve 30 is locked. The threaded transmission locks the position of the threaded valve stem 20 and the valve core 23, so that the rubber conical valve head 25 at the bottom of the valve core 23 is tightly attached to the wall of the expansion conical groove 27 inside the valve body 2, thereby achieving complete sealing and closure of the internal medium channel of the valve body 2.

[0043] Meanwhile, the guide groove 29 inside the valve body 2 and the slider 28 on the outer wall of the valve core 23 are in full-range limiting cooperation to ensure that the valve core 23 does not deviate or shake when stationary. Together with the sealing rings at the gaps of the valve body 2, threaded sleeve 30, and valve core 23, as well as the sealing structure at the docking positions of the modules of the upper distributor 4, the whole machine is fully sealed to avoid media leakage and air pressure leakage in the standby state.

[0044] After the filling equipment is started, the servo motor 1 is started and rotates in the forward direction, which drives the threaded sleeve 30 connected to the output end to rotate synchronously. The threaded sleeve 30 drives the threaded valve stem 20 through the threaded transmission, which in turn drives the valve core 23 to move smoothly along the axial direction.

[0045] During the movement of the valve core 23, the slider 28 always slides precisely along the guide groove 29, limiting the radial displacement of the valve core 23 and ensuring the coaxiality of the movement.

[0046] As the valve core 23 moves, the rubber conical valve head 25 gradually separates from the expanding conical groove 27, and the internal medium channel of the valve body 2 is slowly opened. The medium enters the valve body 2 through the liquid inlet pipe 3 and the feed seat 26. The number of rotations can be precisely controlled by the servo motor 1 to adjust the moving distance of the valve core 23, thereby controlling the opening degree of the valve body 2 channel and realizing precise adjustment of the filling flow rate to adapt to the production needs of different media and filling specifications.

[0047] During the filling process, the top distributor 4 operates synchronously, and the layered distribution modules 6, 7, 8, and 9 work together in coordination.

[0048] The medium and air pressure can be distributed through the independent distribution chamber 15 inside the distribution module 28 and flow into the external flow channel 21 through the hole 19 to realize the multi-channel medium distribution; at the same time, the internal flow channel 22 inside the inner tube 13 is vertically connected to the pressure relief module 7 and the distribution module 3 9, and works with the pressure relief pipe 17 on the side wall of the pressure relief module 7 to adjust the air pressure inside the valve in real time and maintain the pressure balance inside the valve body 2.

[0049] The distribution pipes 1-5, 2-16, and 3-12 on the side walls of each module operate independently, and the pipeline chambers do not interfere with each other, effectively avoiding media mixing and residue problems, and ensuring the stability and cleanliness of the filling operation.

[0050] After the filling operation is completed, the servo motor 1 rotates in the reverse direction, driving the threaded sleeve 30 to reverse, driving the threaded valve stem 20 and valve core 23 to return to their axial downward position, so that the rubber conical valve head 25 re-fits and presses against the wall of the expanding conical groove 27, quickly closing the medium channel of the valve body 2 and cutting off the medium delivery.

[0051] The tapered sealing surface fits together to achieve rapid sealing and prevent leakage, eliminating dripping and seepage at both ports of the valve body after filling. At the same time, the multi-layer sealing structure further enhances the sealing effect after closure, avoiding material waste and equipment contamination.

[0052] After the filling operation is completed, a small amount of pressure and medium remain in the valve body. The pressure relief module 7 connects the upper module and the valve body chamber through the inner flow channel 22 and the outer flow channel 21 respectively. Together with the pressure relief pipe 17, it completes the automatic pressure relief operation, quickly balances the residual pressure inside the valve body 2 and the upper distributor 4, avoids medium backflow and valve core loosening caused by residual pressure in the valve, and provides a stable pressure environment for the next filling opening and closing operation, ensuring the consistency and stability of continuous equipment operation.

[0053] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A filling valve structure integrating an upper dispenser, characterized in that: Includes valve body (2), valve core (23) and upper distributor (4). The valve core (23) is located inside the valve body (2). One end of the valve core (23) is fixedly connected to a rubber conical valve head (25), and the other end is fixedly connected to a threaded valve stem (20). The threaded valve stem (20) is threadedly connected to a threaded sleeve (30) provided inside the valve body (2). The threaded sleeve (30) is fixedly connected to the output end of a servo motor (1) fixed to the outer wall of the valve body (2). The upper distributor (4) is sealed and assembled on the discharge seat (24) at the top of the valve body (2), and the upper distributor (4) includes a distribution module one (6), a pressure relief module (7), a distribution module two (8) and a distribution module three (9) stacked from bottom to top.

2. The filling valve structure of an integrated upper distributor according to claim 1, characterized in that: The valve body (2) is fixedly provided with a feed seat (26) at the front end. The feed seat (26) is fixedly connected with a liquid inlet pipe (3). An expansion conical groove (27) is opened inside the valve body (2) at the position corresponding to the output end of the liquid inlet pipe (3). The outer conical surface of the rubber conical valve head (25) is adapted to fit the groove wall of the expansion conical groove (27) to achieve sealing opening and closing.

3. The filling valve structure of an integrated upper distributor according to claim 1, characterized in that: The valve body (2) has guide grooves (29) on both sides of the inner wall and the bottom. The guide grooves (29) extend along the axial direction of the valve core (23). The outer wall of the valve core (23) is integrally formed with a slider (28). The slider (28) extends and slides inside the guide groove (29) to limit and guide the movement of the valve core (23).

4. The filling valve structure of an integrated upper distributor according to claim 1, characterized in that: The mating ends of the distribution module 1 (6), the pressure relief module (7), and the distribution module 2 (8) are all sealed and fixedly connected by a flange (18). The top of the distribution module 2 (8) is fixedly installed with a mating seat (14), and the bottom of the distribution module 3 (9) is fixedly provided with a mating sleeve (10). The mating sleeve (10) and the mating seat (14) are precisely mated and fixed. The side walls of the distribution module 1 (6), the pressure relief module (7), the distribution module 2 (8), and the distribution module 3 (9) are all uniformly equipped with distribution pipe 1 (5), pressure relief pipe (17), distribution pipe 2 (16), and distribution pipe 3 (12). Each pipe is independently connected to the internal cavity of the corresponding module.

5. The filling valve structure of an integrated upper distributor according to claim 4, characterized in that: The inner tube (13) is fixedly installed at the center of the docking sleeve (10). The top end of the inner tube (13) extends to the top of the distribution module three (9) and is fixedly installed with a sealing cover (11). The bottom end of the inner tube (13) penetrates the distribution module two (8) and extends into the interior of the pressure relief module (7). A through internal flow channel (22) is opened inside the inner tube (13). The internal flow channel (22) vertically connects the internal chambers of the pressure relief module (7) and the distribution module three (9).

6. The filling valve structure of an integrated upper distributor according to claim 5, characterized in that: The outer wall of the inner tube (13) and the inner wall of the distribution module two (8) enclose each other to form an annular outer flow channel (21). The distribution module two (8) is evenly divided into several independent distribution chambers (15) from top to bottom. Each independent distribution chamber (15) has a hole (19) in its cavity wall. Each independent distribution chamber (15) is connected to the outer flow channel (21) through the hole (19). The outer flow channel (21) is vertically connected to the pressure relief module (7) and the internal chamber of the distribution module two (8).

7. The filling valve structure of an integrated upper distributor according to claim 1, characterized in that: Sealing rings are installed at the assembly gaps between the upper and lower ends of the threaded sleeve (30) and the valve body (2), and at the sliding fit gaps between the valve core (23) and the valve body (2). A wear-resistant and corrosion-resistant sealing layer is provided on the surface of the rubber conical valve head (25) to achieve a multi-level sealing and leak-proof structure.

8. The filling valve structure of an integrated upper distributor according to claim 4, characterized in that: The flange (18) has a sealing gasket embedded on its mating end face. The mating contact surfaces of the mating seat (14) and the mating sleeve (10) are provided with an annular sealing ring. An alignment and positioning structure is provided between the mating seat (14) and the mating sleeve (10) to ensure the assembly accuracy and sealing performance of the module.

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