Filling device without power conveying equipment

Abstract

The utility model discloses a filling device without power conveying equipment, and belongs to the field of liquid filling equipment. According to the technical scheme, the filling device without the power conveying equipment comprises a material tank and a filling mechanism, a rotating shaft is rotationally connected in the material tank, an air guide connecting piece is arranged at the lower end of the rotating shaft, the rotating shaft is provided with a hollow cavity communicated with the air guide connecting piece, and the filling mechanism is arranged in the cavity. A stirring assembly is arranged on the air guide connecting piece, the stirring assembly is provided with an inner cavity communicated with the air guide connecting piece, and a plurality of through holes communicated with the inner cavity are formed in the side wall of the stirring assembly at intervals; gas is injected into the cavity of the rotating shaft through the inflation mechanism, the stirring assembly is driven by gas pressure to rotate and disperse the gas, material stirring and air pressure conveying are synchronously carried out, dependence on external power conveying equipment is eliminated, and the device has the advantages that energy consumption is reduced, the structure is simplified, material residues are avoided, and the filling precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid filling equipment field, concretely relates to a filling device without power conveying equipment. BACKGROUND

[0002] In the liquid filling industry, the traditional equipment usually relies on power conveying devices such as centrifugal pumps and gear pumps to convey materials from the storage tank to the filling port. Although this design is common, it has the following key defects:

[0003] Strong power dependence and low energy efficiency: Power conveying equipment (such as mechanical pumps) requires continuous consumption of electrical energy or hydraulic energy to drive, resulting in high energy consumption costs. For small and medium-sized production lines or intermittent filling scenarios, frequent start-stop of the pump body further exacerbates energy waste.

[0004] Complex mechanical structure and high maintenance cost: The impeller, sealing elements and other precision components inside the pump body are easily worn or corroded by the material, especially when handling high-viscosity liquids (such as sauces, paints) or materials containing solid particles (such as pharmaceutical suspensions). Pump blockage and leakage failures occur frequently, requiring frequent shutdown for maintenance, which seriously affects production efficiency.

[0005] Material residue and cross-contamination risk: Material residues are easily left in the pump body and complex piping system, making cleaning difficult and promoting bacterial growth or causing cross-contamination of different batches of material, making it difficult to meet the high hygiene standards of the food, pharmaceutical and other industries.

[0006] Separation of stirring and conveying functions: In traditional solutions, stirring and conveying are usually done with independent systems (such as motor-driven stirrers + pumping pipelines), resulting in equipment redundancy. When stirring is insufficient, material settling problems are prominent, pumping resistance increases, and even pipeline blockage can occur; relying solely on pumping cannot simultaneously optimize material flowability, making it difficult to ensure filling accuracy.

[0007] To alleviate the above problems, some improved technologies attempt to use air pressure to replace mechanical pumps, such as by injecting compressed gas into the storage tank to directly push the material. However, this type of solution has significant limitations:

[0008] Low gas utilization rate: Gas is only used to generate pressure to push the material to flow, and it is difficult to solve the problem of uneven flowability caused by material stratification or clumping without coordination with the stirring function.

[0009] Difficulty in pressure control: High gas pressure can cause overfilling or spattering, while insufficient gas pressure cannot drive high-viscosity materials, requiring a complex gas pressure regulation system, increasing equipment costs.

[0010] Incomplete stirring: If an independent stirring device is used, an additional power source is still required, which cannot fundamentally simplify the equipment structure and reduce energy consumption.

[0011] In view of the above industry pain points, an innovative solution capable of deeply integrating gas driving and material stirring functions is urgently needed to eliminate the dependence on external power conveying equipment while achieving efficient homogenization and precise filling of materials. The present application breaks through the traditional technical bottleneck by directly converting gas power into dual driving force for stirring and conveying through unique integrated air charging and stirring design, significantly improving filling efficiency and economy. Practical new type content

[0012] The present application provides a filling device without power conveying equipment to solve at least one of the above technical problems.

[0013] The technical scheme adopted by the present application is:

[0014] A filling device without power conveying equipment, comprising a material tank and a filling mechanism, a rotating shaft is rotatably connected in the material tank, a gas guide connecting piece is arranged at the lower end of the rotating shaft, the rotating shaft has a hollow cavity communicating with the gas guide connecting piece, a stirring assembly is arranged on the gas guide connecting piece, the stirring assembly has an inner cavity communicating with the gas guide connecting piece, a plurality of through holes communicating with the inner cavity are arranged at intervals on the side wall of the stirring assembly, and a gas charging mechanism for charging gas into the cavity of the rotating shaft is further included.

[0015] Further, the present application further proposes that the stirring assembly comprises horizontal stirring rods symmetrically arranged on the side wall of the gas guide connecting piece, vertical stirring rods are fixedly connected to the end portions of the horizontal stirring rods, bottom stirring rods are arranged at the lower ends of the two vertical stirring rods, the horizontal stirring rods, the vertical stirring rods and the bottom stirring rods all have inner cavities communicating with each other, and the through holes are arranged at intervals on the outer walls of the horizontal stirring rods, the vertical stirring rods and the bottom stirring rods.

[0016] Further, the present application further proposes that the gas guide connecting piece comprises a connecting seat and a rotating seat, the connecting seat is arranged at the lower end of the rotating shaft, the horizontal stirring rods are symmetrically arranged on both sides of the rotating seat, and a sealing ring is arranged between the connecting seat and the rotating seat.

[0017] Further, the present application further proposes that the gas charging mechanism comprises a gas tank, a gas guide pipe is arranged on the gas tank, a gas pump is arranged on the material tank, the gas guide pipe is fixedly connected to the input end of the gas pump, an exhaust pipe is arranged at the output end of the gas pump, a gas guide shell is connected to the end of the exhaust pipe, the gas guide shell is rotatably connected to the rotating shaft, the gas guide shell communicates with the cavity of the rotating shaft, and a control valve is arranged on the exhaust pipe.

[0018] Further, the present application further proposes that the filling mechanism comprises a discharge pipe arranged at the bottom of the material tank, a material guide pipe is connected to the end of the discharge pipe, and a discharge control valve is arranged at the end of the material guide pipe.

[0019] Further, the present application further proposes that the filling mechanism further comprises a weighing platform located below the end of the material guide pipe.

[0020] Further, the application also proposes that the material tank is provided with a pressure relief valve.

[0021] Further, the application also proposes that the rotating seat bottom is fixedly connected with a stirring shaft, and the stirring shaft is vertically and spacedly provided with a plurality of stirring blades.

[0022] Further, the application also proposes that a scraper is arranged between the horizontal stirring rod and the bottom stirring rod, and the scraper is attached to the inner wall of the material tank.

[0023] Further, the application also proposes that the rotating shaft is provided with a driving motor at the upper end.

[0024] Due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0025] 1. After the inflation mechanism injects compressed gas into the rotating shaft cavity, the gas enters the inner cavity of the stirring assembly through the gas guide connecting piece. When the gas is released outward through the through hole, a reaction force is formed, which drives the stirring assembly to rotate around the rotating shaft, thereby performing three-dimensional stirring on the material. At the same time, the gas forms a bubble flow in the material, reducing the viscosity of the material. After the gas pressure in the material tank increases, the material automatically flows out through the bottom discharge pipe under the action of the pressure difference, completing the filling operation without mechanical pump driving.

[0026] The power generated by the gas release is used to synchronize the stirring and material conveying. In the existing gas pressure filling equipment, the gas is only used for pressurization, and the stirring still needs an independent power source. However, in the present application, the stirring assembly is naturally driven to rotate by using the kinetic energy of the gas discharge, thereby realizing function integration.

[0027] The present application eliminates the dependence on external power equipment such as centrifugal pumps, and reduces the risk of leakage caused by mechanical seal wear. During the stirring process, the gas directly acts on the inside of the material, avoiding the problem of adhesion of traditional stirring blades to high-viscosity materials. When the material is conveyed, there is no complex pipeline structure inside the tank body, which reduces the residual amount and simplifies the cleaning process, and is particularly suitable for jam filling production lines that need to frequently change material varieties.

[0028] 2. When the gas flows along the horizontal stirring rod, part of the gas is ejected outward through the through hole to form a reaction force, which drives the horizontal stirring rod to rotate around the rotating shaft. At the same time, the gas continues to pass through the vertical stirring rod to the bottom stirring rod, and continuously escapes from the through holes of the stirring rods during the flow process. The escaped gas forms an upward bubble flow in the material, which on the one hand drives the stirring assembly to continuously rotate by utilizing the buoyancy, and on the other hand reduces the viscosity of the material by bubble disturbance. The three-dimensional frame structure of the stirring assembly allows the material to be subjected to the double action of mechanical stirring and gas disturbance in the horizontal, vertical and bottom directions, for example, the horizontal stirring rod pushes the material in the middle of the tank, the vertical stirring rod stirs the material in the edge area of the tank, and the bottom stirring rod prevents the material from depositing.

[0029] The gas-driven stirring assembly rotates by itself without external power input, enabling the self-driven rotation of the stirring assembly by gas power and eliminating the need for a traditional independent motor and transmission mechanism.

[0030] 3. The compressed gas in the gas tank enters the gas pump through the gas guide pipe and is pressurized, then is delivered to the gas guide shell through the exhaust pipe. The gas guide shell is in communication with the rotating shaft through the rotating seal structure, so that the pressurized gas continuously enters the rotating shaft cavity and flows to the stirring assembly. The control valve can control the gas pressure intensity entering the rotating shaft by adjusting the gas flow of the exhaust pipe.

[0031] By directing the gas output from the gas pump into the rotating shaft and the stirring assembly, the gas simultaneously assumes the dual functions of driving the stirring rotation and maintaining the pressure in the tank. For example, in the prior art, a single gas source needs to be connected to the stirring gas path and the delivery gas path respectively, while in the present scheme, the two are unified through integrated gas path design, reducing the number of pipeline connection points and the potential risk of leakage.

[0032] 4. The pressure relief valve monitors the pressure state in the tank in real time through a mechanical sensing element. When the pressure reaches a critical value, the valve core is pushed by the gas pressure to overcome the spring resistance to open the exhaust passage, allowing excess gas to be discharged. This process forms a closed-loop control with the weight feedback of the weighing platform, maintaining stable filling flow rate while preventing pressure surges from causing material conduit blockage or container deformation.

[0033] 5. The stirring shaft rotates under the reaction force generated by the gas release, driving the vertically spaced stirring blades to perform multi-level shearing on the material. For example, the distance between adjacent stirring blades can be set to one-fifth to one-tenth of the height of the material tank, forming an upper and lower staggered turbulent region during rotation, effectively breaking up material clumps. The bottom stirring blades move close to the bottom wall of the material tank, preventing high-viscosity material from depositing on the tank bottom.

[0034] 6. When the stirring assembly is driven to rotate by the gas, the scraper rotates with the horizontal stirring rod and the bottom stirring rod around the rotating shaft. The scraper edge slides tightly against the inner wall of the tank, using mechanical scraping to peel off the sticky material or sediment attached to the tank wall. In this process, the bubbles released by the scraper and the stirring rod work together: the bubbles disturb the adhesion of the material, and the scraper pushes the loosened residue away from the tank wall and mixes it into the main flow, avoiding local clumping.

[0035] 7. The driving motor is a device that provides rotational power to the rotating shaft, which can be implemented using a servo motor or a stepper motor, and is fixedly connected to the rotating shaft through a shaft coupling. When the gas power generated by the inflation mechanism is not sufficient to fully drive the stirring assembly, this device can be used as an auxiliary power source to ensure the continuity and stability of the stirring action. BRIEF DESCRIPTION OF DRAWINGS

[0036] Fig. 1It is a structure schematic view of the embodiment of the utility model.

[0037] Fig. 2 It is a front view of the embodiment of the utility model.

[0038] Fig. 3 It is a structure schematic view of the stirring assembly in the utility model.

[0039] The drawings described herein are used to provide further understanding of the utility model, and form a part of the utility model.

[0040] In the drawings:

[0041] 1, material tank;11, discharge pipe;111, material guide pipe;112, discharge control valve;12, pressure relief valve;2, rotating shaft;20, connecting seat;21, stirring shaft;211, stirring blade;22, horizontal stirring rod;221, vertical stirring rod;222, bottom stirring rod;23, scraper;3, driving motor;4, gas tank;41, gas guide pipe;5, gas pump;51, exhaust pipe;52, control valve;53, gas guide shell;6, weighing platform. DETAILED DESCRIPTION

[0042] In order to more clearly explain the overall concept of the utility model, the following will be described in detail in the form of examples combined with the drawings of the specification.

[0043] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0044] In addition, in the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the utility model.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Reference Figs. 1 to 3 This application proposes a filling device including a material tank 1 and a filling mechanism. The material tank 1 is provided with a rotating shaft 2 with a hollow cavity. The lower end of the rotating shaft 2 is connected to a gas guide connector. A stirring component with an inner cavity is installed on the gas guide connector. Multiple through holes are opened on the outer wall of the stirring component. The gas filling mechanism inputs gas into the cavity of the rotating shaft 2 and conducts it to the stirring component.

[0048] The hollow cavity of the rotating shaft 2 refers to the gas passage that runs through the shaft, which can be formed using seamless steel tubing, and is used to transmit the gas supplied by the inflation mechanism to the stirring assembly. The gas guide connector is a sealed rotary joint connecting the rotating shaft 2 and the stirring assembly, for example, made of a copper alloy sleeve with bearings, ensuring that the rotating shaft 2 can rotate freely during gas transmission. The inner cavity of the stirring assembly refers to the gas distribution channel that communicates with the gas guide connector, for example, a 5 mm diameter pipe installed inside the horizontal stirring rod 22. The through holes are gas release holes opened on the outer wall of the stirring rod, and the hole diameter can be arranged in an array of 0.5 mm to 2 mm. The inflation mechanism is a device that continuously supplies compressed gas to the rotating shaft 2, for example, a combined system including an air compressor and 41 gas guide pipes.

[0049] Specifically, after the inflation mechanism injects compressed gas into the cavity of the rotating shaft 2, the gas enters the inner cavity of the stirring assembly through the gas guide connector. When the gas is released outward through the through hole, it forms a reaction force, which drives the stirring assembly to rotate around the rotating shaft 2, thereby stirring the material in three dimensions. At the same time, the gas forms a bubble flow in the material, reducing the viscosity of the material. After the gas pressure in the material tank 1 rises, the material automatically flows out through the bottom discharge pipe 11 under the action of the pressure difference, completing the filling operation without mechanical pump driving.

[0050] Compared with the prior art, the traditional scheme needs to separately set a motor-driven stirrer and a mechanical pump, while the present scheme synchronously realizes stirring and material conveying by the power generated by gas release. In the existing gas pressure filling equipment, the gas is only used for pressurization, and stirring still needs an independent power source, while in the present scheme, the stirring assembly is naturally driven to rotate by the kinetic energy of gas discharge, realizing function integration.

[0051] Through the above technical scheme, the present application eliminates the dependence on external power equipment such as centrifugal pumps, reducing the risk of leakage caused by wear of mechanical seals. During stirring, the gas directly acts on the inside of the material, avoiding the problem of adhesion of traditional stirring blades 211 to high-viscosity materials. When the material is conveyed, there is no complex pipeline structure inside the tank body, reducing the residual amount and simplifying the cleaning process, and it is particularly suitable for jam filling production lines that need to frequently change material varieties.

[0052] The present application further proposes that the stirring assembly comprises horizontal stirring rods 22 symmetrically arranged on the side wall of the gas guide connector, the end of the horizontal stirring rod 22 is fixedly connected with a vertical stirring rod 221, and the lower end of the two vertical stirring rods 221 is provided with a bottom stirring rod 222. The horizontal stirring rod 22, the vertical stirring rod 221 and the bottom stirring rod 222 all have an inner cavity in communication with each other, and through holes are arranged at intervals on the outer wall of the horizontal stirring rod 22, the vertical stirring rod 221 and the bottom stirring rod 222.

[0053] Among them, the symmetrical arrangement of the horizontal stirring rod 22 means that the two horizontal stirring rods 22 are respectively located on the left and right sides of the gas guide connector, which can be achieved by welding or flange connection of metal pipes, so that the gas is uniformly introduced into the inner cavity through symmetrical distribution. The vertical stirring rod 221 is fixedly connected with the horizontal stirring rod 22 perpendicularly, that is, the two are in L-shaped structure, which can be formed by thread fastening or integral casting, and is used to expand the stirring coverage area. The bottom stirring rod 222 transversely connects the lower ends of the two vertical stirring rods 221, for example, in the form of a U-shaped elbow pipe structure, which is used to disturb the material at the bottom of the material tank 1. The inner cavities are in communication with each other, that is, the inner cavities of the horizontal, vertical and bottom stirring rods 222 form a continuous gas passage, which can be achieved by butt joint of equal-diameter pipes or gradual-diameter transition structure, to ensure the flow of gas along the stirring rods. The through holes are arranged at intervals, that is, a plurality of exhaust holes with the same diameter are arranged on the outer wall, for example, a circular hole with a diameter of 2-5 mm is arranged every 10-15 cm along the length direction of the stirring rod, so that the gas is uniformly released from multiple points.

[0054] Specifically, the gas injected by the inflation mechanism enters the gas guide connector through the cavity of the rotating shaft 2, and then is distributed into the inner cavities of the symmetrical horizontal stirring rods 22. When the gas flows along the horizontal stirring rods 22, part of the gas is ejected outward through the through holes to form a reaction force, which drives the horizontal stirring rods 22 to rotate around the rotating shaft 2. At the same time, the gas continues to flow through the vertical stirring rods 221 into the bottom stirring rods 222, and continuously escapes from the through holes of the stirring rods during the flow process. The escaped gas forms an upward bubble flow in the material, which on the one hand drives the stirring assembly to continuously rotate by using the buoyancy, and on the other hand reduces the viscosity of the material by bubble disturbance. The three-dimensional frame structure of the stirring assembly enables the material to be subjected to the dual action of mechanical stirring and gas disturbance in the horizontal, vertical and bottom directions, for example, the horizontal stirring rods 22 push the material in the middle of the tank when rotating, the vertical stirring rods 221 agitate the material in the edge area of the tank, and the bottom stirring rods 222 prevent the material from depositing.

[0055] Compared with the prior art, the conventional stirring device usually drives the stirring blades 211 by an independent motor, for example, a vertical shaft stirrer is installed at the top of the tank, which needs to consume additional electric energy and has the risk of sealing failure. The present scheme drives the stirring assembly to rotate by gas without external power input, for example, when the inflation pressure is 0.3-0.5 MPa, the stirring speed of 20-30 revolutions per minute can be achieved. The stirring range in the prior art is usually limited to the middle area of the tank, for example, the single-layer paddle structure cannot reach the corners of the tank bottom, while the bottom stirring rods 222 cooperate with the vertical stirring rods 221 in the present scheme to cover more than 80% of the area of the tank height. In addition, the closed blade structure of the conventional stirrer is easy to cause material residue, while the through holes on the stirring rods in the present scheme produce shear action simultaneously when releasing gas, for example, when processing jam with a viscosity of 5000 cP, the material can still be effectively prevented from adhering.

[0056] Through the above technical scheme, the present application realizes the self-driven rotation of the stirring assembly by gas power, eliminating the need for a conventional independent motor and transmission mechanism, for example, reducing the equipment manufacturing cost by about 25%. The three-dimensional distribution of the stirring rod structure forms a three-dimensional stirring effect without external power, for example, when processing liquid medicine containing 30% solid particles, the amount of sediment can be reduced by 90%. The through hole design produces turbulent flow while releasing gas, for example, the mixing uniformity of high-viscosity paint is improved to more than 98%. The inner cavity communication structure ensures that the gas participates in the stirring process throughout the process, for example, when processing materials prone to oxidation, the stirring and anti-oxidation can be achieved simultaneously by injecting inert gas. The structure also facilitates cleaning and maintenance, for example, the stirring rods connected by quick-release joints can be disassembled within 10 minutes, avoiding the risk of cross-contamination caused by material residue.

[0057] The application further proposes that the gas guide connecting piece comprises a connecting seat 20 and a rotating seat, the connecting seat 20 is arranged at the lower end of the rotating shaft 2, the horizontal stirring rods 22 are symmetrically arranged at the two sides of the rotating seat, and a sealing ring is arranged between the connecting seat 20 and the rotating seat.

[0058] The connecting seat 20 refers to a base component fixed to the lower end of the rotating shaft 2 and connected with the rotating seat, which can be realized by a flange plate or a metal component with a clamping groove, and its function is to provide a stable installation foundation for the rotating seat and transmit the gas passage. The rotating seat refers to a bearing component matched with the connecting seat 20 and rotatable around the axis, which can be realized by a ring-shaped shell supported by a bearing, and its function is to provide a rotatable installation platform for the horizontal stirring rods 22 and keep the gas passage connected with the rotating shaft 2. The sealing ring refers to a ring-shaped sealing element arranged between the contact surface of the connecting seat 20 and the rotating seat, which can be realized by an O-shaped rubber ring or a polytetrafluoroethylene gasket, and its function is to prevent gas leakage by filling the connection gap through elastic deformation.

[0059] Specifically, the cavity of the rotating shaft 2 is communicated with the inner cavity of the rotating seat through the connecting seat 20, and the gas is divided into two streams to the horizontal stirring rods 22 at the two sides of the rotating seat after entering the connecting seat 20 from the rotating shaft 2. The rotating seat and the connecting seat 20 adopt a split structure and are assembled through an axial contact surface, and the horizontal stirring rods 22 are symmetrically welded or bolted to the two side walls of the rotating seat. The sealing ring is compressed in the annular groove between the connecting seat 20 and the rotating seat, and the sealing property of the contact surface is continuously maintained during the rotation of the rotating seat, so as to avoid the escape of gas from the connection to cause gas pressure loss.

[0060] Compared with the prior art, the traditional gas guide connecting piece mostly adopts a fixed welding structure or a single rotary joint, the former cannot realize the free rotation of the stirring assembly, and the latter is prone to gas leakage due to the lack of split sealing design. The split assembly of the connecting seat 20 and the rotating seat in the present scheme allows the stirring assembly to rotate freely with the airflow disturbance, and dynamically seals the rotating interface by using the sealing ring, avoiding the use of complex rotary sealing mechanism.

[0061] Through the above technical scheme, the application solves the problem of insufficient air tightness of the gas guide connecting piece under the rotating condition, and ensures that the gas can enter the stirring assembly efficiently without leaking from the connection. At the same time, the split structure reduces the processing difficulty, and the sealing ring can be quickly disassembled and replaced after wear, reducing the equipment maintenance downtime.

[0062] The application further proposes that the inflation mechanism comprises a gas tank 4, a gas guide pipe 41 is arranged on the gas tank 4, a gas pump 5 is arranged on the material tank 1, the gas guide pipe 41 is fixedly connected with the input end of the gas pump 5, the output end of the gas pump 5 is provided with an exhaust pipe 51, the end of the exhaust pipe 51 is connected with a gas guide shell 53, the gas guide shell 53 is rotationally connected with the rotating shaft 2, the gas guide shell 53 is communicated with the cavity of the rotating shaft 2, and a control valve 52 is arranged on the exhaust pipe 51.

[0063] Wherein, the gas tank 4 refers to a closed container for storing compressed gas, which can be realized by a stainless steel pressure vessel, and its capacity can be adjusted according to the volume of the material tank 1, for example, a size with a capacity of 50-200 liters is selected, and its function is to provide a stable gas source for gas delivery. The gas guide pipe 41 refers to the pipeline connecting the gas tank 4 and the gas pump 5, which can be realized by a pressure-resistant hose or a metal bellows, for example, a pipe with an inner diameter of 10-20 mm is selected, and its function is to direct the gas in the gas tank 4 to the gas pump 5. The gas pump 5 refers to a device for gas pressurization, which can be realized by a diaphragm type gas pump 5 or a piston type gas pump 5, for example, a model with an exhaust pressure of 0.3-0.8 MPa is selected, and its function is to increase the gas pressure to a strength suitable for driving stirring and conveying. The control valve 52 refers to a device for adjusting the gas flow, which can be realized by an electromagnetic proportional valve or a manual ball valve, for example, a valve with flow scale display is selected, and its function is to accurately control the gas flow into the rotating shaft 2. The gas guide shell 53 refers to a sealed cavity connected with the rotating shaft 2, which can be realized by an aluminum alloy shell with a bearing seat, for example, a rotating sealing ring is arranged inside the shell, and its function is to deliver the gas output by the gas pump 5 to the cavity of the rotating shaft 2 without loss.

[0064] Specifically, the compressed gas in the gas tank 4 enters the gas pump 5 through the gas guide pipe 41 and is pressurized, and then is delivered to the gas guide shell 53 through the exhaust pipe 51. The gas guide shell 53 is in communication with the rotating shaft 2 through a rotating sealing structure, so that the pressurized gas continuously enters the cavity of the rotating shaft 2 and flows to the stirring assembly. The control valve 52 can control the gas pressure strength entering the rotating shaft 2 by adjusting the gas flow of the exhaust pipe 51. For example, when processing high-viscosity materials, the control valve 52 can increase the opening to increase the gas pressure and enhance the stirring intensity; when filling low-viscosity materials, the opening is reduced to reduce the gas pressure to avoid excessive disturbance. The fixed connection mode of the gas pump 5 and the gas guide pipe 41 can prevent gas leakage, and the rotating connection design of the gas guide shell 53 and the rotating shaft 2 ensures that the gas can still be stably transmitted in the dynamic rotating state.

[0065] Compared with the prior art, the traditional gas pressure driving scheme mostly adopts the way of directly injecting gas into the material tank 1, and the gas is only used to generate pressure and cannot drive stirring, resulting in poor material homogeneity and low gas pressure utilization rate. The present scheme directs the gas output by the gas pump 5 into the rotating shaft 2 and the stirring assembly, so that the gas simultaneously undertakes the dual functions of driving stirring rotation and maintaining the pressure in the tank. For example, in the prior art, a single gas source needs to be connected to the stirring gas circuit and the conveying gas circuit respectively, while the present scheme integrates the two through an integrated gas circuit design, reducing the pipeline connection points and the potential leakage risk.

[0066] By the technical scheme, the application realizes efficient reuse of gas power, and completes material stirring and conveying simultaneously without additional power device. The introduction of the control valve 52 makes the gas pressure adjustment more accurate, and the operation parameters can be quickly adjusted according to different material characteristics, so as to avoid problems such as filling spatter caused by too high gas pressure or flowability reduction caused by insufficient gas pressure. The fixed connection structure of the air pump 5 and the air guide pipe 41 reduces the gas leakage probability, and the rotary sealing design of the air guide shell 53 effectively solves the dynamic sealing problem, thereby ensuring long-term stable operation of the equipment.

[0067] The application further provides a filling mechanism, which comprises a material discharge pipe 11 arranged at the bottom of the material tank 1, and a material guide pipe 111 connected to the end of the material discharge pipe 11, and a material discharge control valve 52112 arranged at the end of the material guide pipe 111.

[0068] The material discharge pipe 11 is a pipe structure connected vertically to the outlet at the bottom of the material tank 1, which can be fixed by flange connection or welding, and is used to guide the material in the tank to an external conveying path. The material guide pipe 111 is an extension pipe connected to the end of the material discharge pipe 11, which can be a detachable hose or a hard pipe, and is used to direct the material to the filling port. The material discharge control valve 52112 is a flow control device arranged at the end of the material guide pipe 111, which can be an electromagnetic valve or a manual ball valve, and is used to accurately adjust the filling flow rate and start / stop time.

[0069] Specifically, the material discharge pipe 11 arranged at the bottom of the material tank 1 is directly communicated with the inside of the tank body, and when the gas pressure in the tank pushes the material to flow, the material enters the material guide pipe 111 through the material discharge pipe 11. The material discharge control valve 52112 controls the material discharge state at the end of the guide pipe through opening or closing action, for example, when the filling container reaches the preset weight, the weighing platform 6 triggers a signal to make the material discharge control valve 52112 close, thereby realizing quantitative filling. The structure omits the traditional pumping equipment, and the material is conveyed only by gas pressure driving and gravity, and the guide pipe path is not complexly bent, thereby reducing internal residues.

[0070] Compared with the prior art, the traditional filling equipment needs to rely on a centrifugal pump to pump the material from the storage tank to the filling port, which leads to a complex pipeline system and a cleaning dead angle. The application shortens the material conveying path and avoids mechanical pump intervention by the straight connection design of the material discharge pipe 11 and the material guide pipe 111 in combination with the gas pressure driving mechanism, thereby avoiding cross contamination caused by material residues in the pump body and reducing the risk of pipeline blockage.

[0071] By the technical scheme, the application realizes simplification of the material flow path in the filling process, and through linkage control of the discharge control valve 52112 and the weighing platform 6, the capacity requirement of the filling container can be accurately matched, and overfilling or material dripping can be avoided. Meanwhile, the linear conduit structure is convenient to disassemble and clean, and is especially suitable for scenarios that need to frequently replace filling materials or perform sanitary cleaning.

[0072] The application further proposes that the filling mechanism further comprises a weighing platform 6, which is located below the end of the material conduit 111.

[0073] The weighing platform 6 refers to a device for monitoring the weight of the filling material in real time, and can be specifically implemented by an electronic scale or a pressure sensor, and the signal output end thereof is linked with the discharge control valve 52112 to control the filling amount. This feature realizes closed-loop control by directly measuring the weight of the material in the container, and avoids filling errors caused by pressure fluctuations. The end of the material conduit 111 refers to the outlet position of the material flowing from the storage tank to the filling container, and can be specifically implemented by a hose or a hard pipe structure, and the end thereof is provided with a discharge control valve 52112 to adjust the flow rate. This feature ensures that the material directly falls into the container and reduces splashing by controlling the vertical layout of the material outlet position and the weighing platform 6.

[0074] Specifically, the weighing platform 6 is installed directly below the end of the material conduit 111, and when the filling container is placed on the platform, the weighing platform 6 detects the cumulative weight of the material in the container in real time. The discharge control valve 52112 dynamically adjusts the material flow rate according to the feedback signal of the weighing platform 6, gradually reduces the opening degree when the weight approaches the preset threshold, and completely closes when the target value is reached. In this process, the inflation mechanism continuously injects gas into the material tank 1 to maintain stirring and material flow, but the filling amount is directly metered by the weighing platform 6 rather than relying on gas pressure calculation, thereby eliminating the influence of material viscosity or bubble disturbance on accuracy.

[0075] Compared with the prior art, the traditional scheme usually relies on a pressure sensor to indirectly calculate the filling amount, but the pressure is affected by the material viscosity, the liquid level in the tank and the bubble disturbance, and the error is large. The present scheme directly measures the actual filling weight by the weighing platform 6 to form a closed-loop control independent of the gas pressure system, thereby avoiding the cumulative error caused by indirect calculation. In addition, the linkage of the weighing platform 6 and the discharge control valve 52112 does not require a complex gas pressure adjustment device, thereby simplifying the system structure.

[0076] Through the above technical scheme, the application realizes high-precision control of the filling amount, and is especially suitable for scenarios that have strict requirements on filling accuracy, such as medical reagent sub-packaging or high-value liquid quantitative filling. The weighing platform 6 directly measures the weight of the material, and the response speed of the discharge control valve 52112 can be adapted to liquids of different viscosities, so as to ensure that the filling error is controlled within an allowable range, and to avoid waste of materials or contamination of the container caused by overfilling.

[0077] The application further proposes that the material tank 1 is provided with a pressure relief valve 12.

[0078] The pressure relief valve 12 refers to a device installed on the container wall for controlling the internal pressure within a safe range. Specifically, a spring safety valve or a lever safety valve can be used to achieve this. The opening pressure threshold can be preset and adjusted according to the material characteristics. During the operation of the inflation mechanism, when the internal pressure of the material tank 1 exceeds the preset threshold, the device automatically opens to discharge gas, preventing the filling from spattering or the material from remaining due to excessive pressure.

[0079] Specifically, when the inflation mechanism continuously injects gas into the cavity of the rotating shaft 2, the internal pressure of the material tank 1 gradually increases. The pressure relief valve 12 monitors the pressure state in the tank in real time through a mechanical sensing element. When the pressure reaches the critical value, the valve core is pushed by the gas pressure to overcome the spring resistance and open the exhaust passage, allowing excess gas to be discharged. This process forms a closed-loop control with the weight feedback of the weighing platform 6, maintaining stable filling flow rate while preventing pressure surges that cause material conduit 111 blockage or container deformation.

[0080] Compared with the prior art, the traditional gas pressure driving scheme relies on electronic sensors and electromagnetic valves to build a complex pressure regulation system, which not only increases equipment cost but also causes control errors due to signal delay. This scheme uses a purely mechanical pressure relief structure to achieve dynamic pressure balance through a physical threshold trigger mechanism, eliminating the need for additional control circuits, simplifying the device structure while enhancing system reliability.

[0081] Through the above technical solutions, the application effectively solves the problems of filling precision decline and safety hazards caused by pressure overload in the gas pressure driving system. The physical threshold trigger mechanism of the pressure relief valve 12 can accurately match the pressure bearing limit of different viscosity materials, avoiding the risk of tank rupture caused by excessive gas injection, ensuring smooth flow of materials under constant pressure, and reducing the measurement error caused by pressure fluctuations during the filling process.

[0082] The application further proposes that the rotating seat is fixedly connected with a stirring shaft 21, and the stirring shaft 21 is vertically and spacedly provided with a plurality of stirring blades 211.

[0083] The stirring shaft 21 is a longitudinal support member rigidly connected to the bottom of the rotating seat, which can be made of stainless steel or carbon steel material in a hollow tubular structure, and the internal cavity is communicated with the inner cavity of the rotating seat to allow the gas to pass through. This structure makes the stirring shaft 21 rotate synchronously with the rotating seat, and transmits the gas driving force to the stirring blades 211. The stirring blades 211 are sheet-shaped disturbance components arranged equidistantly along the longitudinal direction of the stirring shaft 21, which can be installed by welding or bolting an arc-shaped steel plate, and the distance between the blades can be adjusted according to the viscosity of the material. The stirring blades 211 form a vortex during rotation, enhancing the axial and radial mixing of the material.

[0084] Specifically, the stirring shaft 21 is fixed to the center position of the bottom of the rotating seat through a flange structure, and the internal cavity is communicated with the inner cavity of the rotating seat. When the inflation mechanism injects gas into the cavity of the rotating shaft 2, the gas enters the inside of the stirring shaft 21 through the inner cavity of the rotating seat, and is finally uniformly released through the micro-holes preset on the surface of the stirring blades 211. The stirring shaft 21 rotates under the driving force of the reaction force generated by the release of the gas, and drives the vertically spaced stirring blades 211 to shear the material in multiple levels. For example, the distance between adjacent stirring blades 211 can be set to one-fifth to one-tenth of the height of the material tank 1, forming an up-and-down staggered turbulent flow region during rotation, effectively breaking the material agglomeration. The bottom stirring blades 211 move close to the bottom wall of the material tank 1, which can prevent high-viscosity materials from depositing on the tank bottom.

[0085] Compared with the prior art, the independent stirrer in the traditional scheme needs to be additionally configured with a driving motor 3, resulting in a complex device and high energy consumption. In this scheme, the stirring shaft 21 and the gas driving assembly are integrated, so that the stirring blades 211 rotate autonomously under the driving of the gas pressure, which not only simplifies the transmission structure, but also eliminates the need for an independent power source. At the same time, the three-dimensional flow field generated by the multi-level stirring blades 211 covers the entire height of the material tank 1, and the mixing efficiency is significantly improved compared with the traditional single-layer stirring scheme.

[0086] Through the above technical scheme, the longitudinal flow field in the material tank 1 is strengthened and mixed, and the stratification phenomenon of different density components is effectively eliminated. The continuous rotation of the stirring blades 211 under the driving of the gas can prevent the winding and accumulation of fibrous or granular materials, and is especially suitable for filling scenes containing fruit pulp, fruit juice or suspended liquid. The optimized design of the gap between the bottom stirring blades 211 and the tank bottom further reduces the material residue and reduces the cleaning frequency.

[0087] The application further provides a scraper 23 arranged between the horizontal stirring rod 22 and the bottom stirring rod 222, and the scraper 23 is attached to the inner wall of the material tank 1.

[0088] The scraper 23 is a plate-shaped structure connected between the horizontal stirring rod 22 and the bottom stirring rod 222, which can be made of a material with certain elasticity, such as rubber or polyurethane, and is fixed to the side wall of the stirring rod by bolts or welding. Its function is to remove the material residues adhering to the tank wall by continuous contact with the inner wall of the tank, preventing the accumulation of hard lumps. The close contact with the inner wall of the material tank 1 means that the edge of the scraper 23 is always in contact or slightly spaced with the inner wall of the tank during stirring, which can be achieved by adjusting the curvature or installation angle of the scraper 23. This design can cover the vertical area of the tank side wall and eliminate the stirring blind area.

[0089] Specifically, when the stirring assembly is driven to rotate by gas, the scraper 23 rotates with the horizontal stirring rod 22 and the bottom stirring rod 222 around the rotating shaft 2. The edge of the scraper 23 slides closely along the inner wall of the tank, and the mechanical scraping action is used to peel off the viscous material or sediment adhering to the tank wall. In this process, the scraper 23 cooperates with the gas bubbles released by the stirring rod: the gas bubbles disturb the adhesion of the material, and the scraper 23 pushes the loosened residues away from the tank wall and mixes them into the main flow, avoiding local caking.

[0090] In some embodiments, the scraper 23 can be designed as a segmented structure, for example, a plurality of independent scrapers are arranged along the length direction of the stirring rod to adapt to different tank diameters; the surface of the scraper 23 can be provided with raised lines, such as wavy or zigzag, to enhance the scraping effect.

[0091] Compared with the prior art, the traditional filling equipment relies on independent cleaning devices such as rotating spray heads to remove residues from the tank wall, which requires manual operation after stopping, while the present application realizes dynamic self-cleaning through the integrated scraper 23 without interrupting the filling process. In addition, the existing gas pressure stirring scheme is difficult to handle the adhesion problem of high-viscosity material on the inner wall due to the lack of physical scraping structure, while the present scheme significantly improves the material peeling efficiency through the linkage of the scraper 23 and the pneumatic stirring.

[0092] Through the above technical scheme, the present application effectively solves the cleaning difficulty and cross-contamination problem caused by the residues on the inner wall of the material tank 1, which is especially suitable for continuous filling of high-viscosity materials such as jam and dairy products, reducing the frequency of manual cleaning and ensuring the hygiene standard of filling.

[0093] The present application further provides that the upper end of the rotating shaft 2 is provided with a driving motor 3.

[0094] The driving motor 3 is a device that provides rotary power for the rotating shaft 2, which can be realized by a servo motor or a stepping motor, and is fixedly connected to the rotating shaft 2 through a shaft coupling. When the gas power generated by the inflation mechanism is not enough to fully drive the stirring assembly, this device can be used as an auxiliary power source to intervene, ensuring the continuity and stability of the stirring action.

[0095] Specifically, the driving motor 3 is mounted on the top of the material tank 1 and rigidly connected with the top end of the rotating shaft 2. When the inflation mechanism injects gas into the cavity of the rotating shaft 2, the gas is released to form a bubble flow through the through hole of the stirring assembly, and the fluid power generated by the rising bubbles drives the stirring assembly to rotate. If the viscosity of the material is too high or the pressure in the tank is insufficient, causing the stirring speed to be lower than the preset threshold, the driving motor 3 is automatically started and applies additional torque to the rotating shaft 2, so that the stirring assembly is accelerated to the target rotating speed. During this process, the start-stop and rotating speed adjustment of the driving motor 3 can be closed-loop controlled through the feedback signal of the pressure sensor or flow meter.

[0096] Compared with the prior art, the stirring and conveying functions of the traditional filling device need to rely on independent power sources, for example, a motor is used to drive the stirrer, and a centrifugal pump is provided for material conveying. In the present scheme, the driving motor 3 only serves as a backup power source and temporarily intervenes when the gas driving force is insufficient, greatly reducing the running time of the motor and thus reducing the power consumption and mechanical wear. In addition, the cooperative control of the driving motor 3 and the inflation mechanism avoids the risk of system shutdown caused by failure of a single power source.

[0097] Through the above technical scheme, the present application realizes reliable execution of stirring action in low gas pressure working conditions or high viscosity material scenes, prevents stratification or precipitation of materials due to insufficient stirring, and ensures the stability of the filling flow rate. At the same time, the intermittent working mode of the driving motor 3 prolongs the service life of the equipment and reduces the maintenance frequency, and is especially suitable for continuous filling operation of fruit juice, dairy products and other easily settled materials.

[0098] The parts not described in the present application can be realized by using or referring to the existing technology.

[0099] Each embodiment in the present specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0100] The above only describes the embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A filling device that does not require a power conveying system, comprising a material tank (1) and a filling mechanism, characterized in that, The material tank (1) is rotatably connected to a rotating shaft (2). The lower end of the rotating shaft (2) is provided with a gas guide connector. The rotating shaft (2) has a hollow cavity that communicates with the gas guide connector. The gas guide connector is provided with a stirring assembly. The stirring assembly has an inner cavity that communicates with the gas guide connector. The side wall of the stirring assembly is provided with several through holes that communicate with the inner cavity. The material tank (1) also includes a gas filling mechanism for filling the cavity of the rotating shaft (2) with gas.

2. The filling device that does not require a power conveying device according to claim 1, characterized in that, The stirring assembly includes horizontal stirring rods (22) symmetrically arranged on the side wall of the air guide connector. A vertical stirring rod (221) is fixedly connected to the end of the horizontal stirring rod (22). A bottom stirring rod (222) is provided at the lower end of the two vertical stirring rods (221). The horizontal stirring rod (22), the vertical stirring rod (221) and the bottom stirring rod (222) all have interconnected inner cavities. The through holes are spaced apart on the outer walls of the horizontal stirring rod (22), the vertical stirring rod (221) and the bottom stirring rod (222).

3. A filling device that does not require a power conveying device according to claim 2, characterized in that, The gas guide connector includes a connecting seat (20) and a rotating seat. The connecting seat (20) is located at the lower end of the rotating shaft (2). The horizontal stirring rod (22) is symmetrically arranged on both sides of the rotating seat. A sealing ring is provided between the connecting seat (20) and the rotating seat.

4. A filling device that does not require a power conveying device according to claim 1, characterized in that, The inflation mechanism includes an air tank (4), an air guide pipe (41) on the air tank (4), an air pump (5) on the material tank (1), the air guide pipe (41) is fixedly connected to the input end of the air pump (5), the output end of the air pump (5) is provided with an exhaust pipe (51), the end of the exhaust pipe (51) is connected to an air guide housing (53), the air guide housing (53) is rotatably connected to the rotating shaft (2), the air guide housing (53) communicates with the cavity of the rotating shaft (2), and a control valve (52) is provided on the exhaust pipe (51).

5. A filling device that does not require a power conveying device according to claim 3, characterized in that, The filling mechanism includes a discharge pipe (11) located at the bottom of the material tank (1), and a material conduit (111) connected to the end of the discharge pipe (11), and a discharge control valve (112) provided at the end of the material conduit (111).

6. A filling device that does not require a power conveying device according to claim 5, characterized in that, The filling mechanism also includes a weighing platform (6), which is located below the end of the material conduit (111).

7. A filling device that does not require a power conveying device according to claim 1, characterized in that, The material tank (1) is equipped with a pressure relief valve (12).

8. A filling device that does not require a power conveying device according to claim 3, characterized in that, The bottom of the rotating seat is fixedly connected to a stirring shaft (21), and the stirring shaft (21) is vertically spaced with a number of stirring blades (211).

9. A filling device that does not require a power conveying device according to claim 8, characterized in that, A scraper (23) is provided between the horizontal stirring rod (22) and the bottom stirring rod (222), and the scraper (23) is in contact with the inner wall of the material tank (1).

10. A filling device that does not require a power conveying device according to claim 1, characterized in that, The upper end of the rotating shaft (2) is equipped with a drive motor (3).

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