Weight reduction type material conveying structure for filling and filling machine

Abstract

The utility model relates to a weight reduction type material conveying structure for filling and a filling machine, and belongs to the technical field of filling machines. Comprising a weighing tank; the weighing device is connected to the weighing tank; the weighing tank is provided with a first conveying port and a second conveying port; the first material conveying opening is configured to be connected with a first material conveying pipeline; the second material conveying opening is configured to be connected with a second material conveying pipeline; and the first material conveying pipeline and the second material conveying pipeline are respectively used for feeding and discharging of the weighing tank. The flow direction of the material does not need to be additionally controlled by a one-way valve, and only a proper stop valve or filling valve needs to be mounted at the discharge port to control opening and closing of discharge, so that the complexity and fault risk of the system are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of filling technology, specifically relating to a weight-reducing filling material conveying structure and filling machine. Background Technology

[0002] Filling machines are typically used to accurately measure materials and then deliver them to target containers. Their core components include a material hopper, conveying pipes, a weighing tank, and a weighing device. The weighing device ensures the accuracy of each filling by measuring the weight of the material inside the weighing tank in real time.

[0003] In existing technologies, weighing tanks typically employ a single conveying pipeline that serves as both the inlet and outlet pipeline. Since switching between inlet and outlet operations requires frequent valve or pipeline switching, this not only increases the complexity of the mechanical structure but also imposes higher design and maintenance requirements on the filling system. To accommodate the switching needs of different pipelines, multiple valves may be required, including a check valve for the inlet pipeline and a shut-off valve for the outlet pipeline. This not only increases the manufacturing cost of the equipment but also significantly enhances the complexity of installation and commissioning.

[0004] Each valve needs to be connected to the control system for precise control. This requires additional modules in the electrical control, such as solenoid valve actuators or valve status monitoring devices. Too many control points can complicate system programming and increase the likelihood of logic conflicts. Utility Model Content

[0005] To solve the above-mentioned problems in the prior art, this utility model provides a weight-reducing material conveying structure and a filling machine for filling.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A weight-reducing material conveying structure for filling is provided, comprising:

[0008] Weighing tank;

[0009] A weighing device is connected to the weighing tank;

[0010] The weighing device is configured to acquire the weight of the material in the weighing tank in real time.

[0011] The weighing tank has a first feed inlet and a second feed inlet;

[0012] The first feed port is configured to connect to the first feed pipeline;

[0013] The second feed port is configured to connect to the second feed pipeline;

[0014] Furthermore, the first conveying pipeline and the second conveying pipeline are used for feeding and discharging the weighing tank, respectively.

[0015] Preferably, the first conveying pipeline is connected to the material box;

[0016] The second conveying pipeline is connected to the filling pipeline;

[0017] Furthermore, the material bin, the first conveying pipeline, and the weighing tank are arranged in a U-shape or approximately U-shape in the vertical plane.

[0018] Preferably, it includes an air-guiding structure;

[0019] The air guiding structure is connected to the weighing tank;

[0020] Wherein, the diameter D2 of the air guiding structure and the diameter D3 of the weighing tank satisfy: D2 <D3。

[0021] Preferably, the air guiding structure has an exhaust port;

[0022] Wherein, the diameter of the exhaust port is D1, and the diameter of the air guiding structure is D2, satisfying: D1=k×D2, where k is a proportionality coefficient, 0.1≤k≤0.3.

[0023] Preferably, the hopper is located at a first height position;

[0024] The exhaust port is located at the third height position;

[0025] Wherein, the height position is the maximum vertical distance between the material box and the vent hole and the same reference plane;

[0026] Furthermore, the third altitude position is greater than or equal to the first altitude position.

[0027] Preferably, the first conveying pipeline has a first section and a second section;

[0028] The first segment is arranged vertically;

[0029] The second segment is arranged horizontally;

[0030] Furthermore, the first segment is connected to the bottom of the hopper;

[0031] Furthermore, the second segment is connected to the bottom of the weighing tank, or to the circumferential wall near the bottom.

[0032] Preferably, the first segment and the second segment have a corrugated structure.

[0033] Preferably, it includes a leveling structure;

[0034] The leveling structure is located at the bottom of the weighing tank and is connected to the weighing device;

[0035] The leveling structure is configured to adjust the levelness of the weighing tank.

[0036] Preferably, the leveling structure includes:

[0037] A leveling plate is connected to the weighing device;

[0038] An adjusting component is screwed onto the leveling plate, and the bottom of the weighing tank is connected to multiple adjusting components;

[0039] The adjusting member has an adjusting stroke in the vertical direction.

[0040] This utility model also provides a filling machine, including:

[0041] The weight-reducing material conveying structure for filling as described in any of the above technical solutions.

[0042] This utility model provides a weight-reducing material conveying structure and a filling machine for filling. The beneficial effects of this utility model are as follows:

[0043] The second conveying pipeline is independently set up from the filling pipeline and directly connected to the discharge port of the weighing tank. It is dedicated solely to discharging, thus avoiding conflicts between material feeding and discharging processes and ensuring a clear material flow direction. Because feeding and discharging are handled through independent pipelines, the number of switching valves is significantly reduced. For example, no check valve is needed for additional control of the material flow direction; only an appropriate shut-off valve or filling valve needs to be installed at the discharge port to control the opening and closing of the discharge, thereby reducing system complexity and the risk of failure. Attached Figure Description

[0044] Figure 1 This is one of the perspective views of the filling machine proposed in this utility model;

[0045] Figure 2 This is one of the front views of the filling machine proposed in this utility model;

[0046] Figure 3 This is a perspective view of the weight-reducing material conveying structure for filling proposed in this utility model;

[0047] Figure 4 This is a front view of the weight-reducing filling material conveying structure proposed in this utility model;

[0048] Figure 5 This is a structural diagram of the vent hole in the material conveying structure for the weight-reducing filling method proposed in this utility model;

[0049] Figure 6 This is the second perspective view of the filling machine proposed in this utility model;

[0050] Figure 7This is the second front view of the filling machine proposed in this utility model.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Material bin; 101. First opening; 102. Discharge port; 2. First conveying pipe; 201. First section; 202. Second section; 203. On / off valve; 204. Corrugated structure; 3. Weighing tank; 301. Inlet; 4. Weighing device; 5. Leveling structure; 501. Leveling plate; 502. Adjusting component; 6. Air guide pipe; 7. Exhaust port; 8. Support; 9. Filling pipeline; 10. First conveying pipe. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] Please see Figures 1 to 7 As shown, the specific embodiments provided by the present invention are as follows:

[0055] refer to Figure 3 As shown, a weighing structure includes a hopper 1. The top of the hopper 1 has a first opening 101, allowing the storage space of the hopper 1 to communicate with the external environment. The bottom of the hopper 1 has a discharge port 102. There can be one or more discharge ports 102.

[0056] refer to Figure 4 As shown, it includes a first conveying pipe 2. The first conveying pipe 2 consists of a first section 201 and a second section 202, wherein the first section 201 is arranged vertically and is connected to the discharge port 102.

[0057] An on / off valve 203 is installed at any position in the first section 201 to open or close the first section 201 to control material conveying. To achieve flexibility, the pipe wall of the first section 201 adopts a corrugated structure 204 within a certain length range that avoids the on / off valve 203, so that the area can expand and contract within a certain range to adapt to the deformation requirements during equipment installation or operation.

[0058] The second segment 202 is arranged horizontally and connected to the first segment 201. To enhance adaptability, the second segment 202 also adopts a corrugated structure 204 within a certain length region, so that it can deform to a certain extent in the vertical direction and has a certain degree of elasticity in the horizontal direction.

[0059] refer to Figure 3 As shown, it includes a weighing tank 3. A feed inlet 301 is located on the circumferential wall of the bottom plate of the weighing tank 3, or on the bottom plate. The feed inlet 301 is connected to the second section 202 of the first conveying pipe 2.

[0060] The weighing tank 3, the first conveying pipe 2, and the material hopper 1 form a U-shaped or near-U-shaped communicating vessel structure. That is, the material hopper 1 and the weighing tank 3 can achieve mutual influence and balance of liquid level or material height through the first conveying pipe 2. The term "U-shape" does not necessarily mean a perfect U-shaped outline, but rather that the overall direction of the pipe from the material hopper 1 to the weighing tank 3 presents a concave bend, or has a roughly vertical or horizontal deformation, so that the material hopper 1 and the weighing tank 3 form a low point or a middle bend through the pipe. The bottom of this U-shape can be arc-shaped, straight, or multi-segmented, as long as the overall flow direction satisfies "flowing out from the bottom of the material hopper 1—passing through a certain horizontal or inclined path—entering the bottom or lower side of the weighing tank 3," it can be considered a U-shape or near-U-shape.

[0061] Under the influence of gravity, if the liquid level in the material tank 1 rises, the liquid level in the weighing tank 3 will also rise; when the liquid level in the material tank 1 falls, the liquid level in the weighing tank 3 will fall accordingly, so as to achieve automatic or semi-automatic liquid level balance and material conveying.

[0062] U-shaped structures can typically reduce material flow speed or change material flow direction at inflection points, thereby reducing material impact, splashing, and bubble generation.

[0063] Since the bottom of the weighing tank 3 is usually matched with the weighing sensor, the impact force is relatively small when the material is fed through the U-shaped pipe, which helps to improve the weighing stability and accuracy.

[0064] In practical applications, in order to adapt to equipment layout, site constraints or reduce corner resistance, the pipeline may not be a perfect U-shape, but may be a partial arc, Z-shape or multi-segment broken line. As long as the "material bin 1-pipe-weighing tank 3" is connected in principle and can form a similar communicating vessel effect, it can be summarized as an "approximate U-shaped" structure.

[0065] refer to Figure 1 and Figure 2 As shown, the material bin 1 is located at the first height position of the system, and the weighing tank 3 is located at the second height position of the system. Here, height position is defined as the maximum vertical distance between the material bin 1 and the weighing tank 3 and the same reference plane. This height definition clarifies the relative positions of the material bin 1 and the weighing tank 3 in space, providing a structural basis for the normal operation of the system.

[0066] To ensure a proper connection between the material bin 1 and the weighing tank 3, this embodiment requires that the second height position of the weighing tank 3 be greater than or equal to the first height position of the material bin 1. Specifically, this height relationship ensures that the relative position of the weighing tank 3 can support the normal feeding of the material bin 1. If the second height position is equal to the first height position, the system can achieve a horizontal layout, which is suitable for a balanced design; if the second height position is greater than the first height position, the weighing tank 3 is at a higher position relative to the material bin 1, and this layout is more suitable for specific process requirements, such as pressure-assisted feeding or special material conveying.

[0067] By setting the aforementioned height positions, this system possesses a clear logical spatial distribution, adapting to both horizontal layouts to save space and height-difference layouts to optimize the conveying process, providing technical support for practical applications under various working conditions. Furthermore, the constraint that the second height position is greater than or equal to the first height position avoids potential problems such as liquid backflow or supply obstruction, thus improving the reliability of system operation.

[0068] refer to Figure 3 As shown, a second conveying pipeline 10 is included. This second conveying pipeline is used to connect to the filling pipeline 9, enabling precise delivery of materials from the weighing tank to the target container. The second conveying pipeline 10 is mainly designed to solve the problems caused by the sharing of a single pipeline for both inlet and outlet in the existing technology, thereby optimizing the efficiency and stability of material conveying.

[0069] refer to Figure 1 and Figure 2 As shown, the second conveying pipe 10 can be installed on the circumferential wall at the bottom of the weighing tank 3. Alternatively, refer to... Figure 6 and Figure 7 The second conveying pipeline 10 is located at the bottom of the weighing tank 3. The bottom of the weighing tank 3 is funnel-shaped to ensure that all materials are conveyed out.

[0070] Specifically, the second conveying pipeline 10 is independently set up from the filling pipeline 9 and directly connected to the discharge port of the weighing tank, dedicated solely to discharge. This avoids conflicts between the material feeding and discharging processes, ensuring a clear material flow direction. Since feeding and discharging are handled through independent pipelines, the number of switching valves is significantly reduced. For example, no check valve is needed for additional control of the material flow direction; only an appropriate shut-off valve or filling valve needs to be installed at the discharge port to control the opening and closing of the discharge, thereby reducing system complexity and the risk of failure.

[0071] Because the second conveying line is dedicated to discharging material, it avoids cross-contamination that can occur when materials repeatedly flow through a single line. Furthermore, the independence of the second conveying line makes it easier to disassemble and clean, making it particularly suitable for the food and pharmaceutical industries where hygiene requirements are high.

[0072] The system includes a weighing device 4. The weighing device 4 is located at the bottom plate of the weighing tank 3 and is used to monitor the weight changes of the weighing tank 3 and the material inside in real time. This weighing device 4 can be in the form of a load cell, which connects to the control system to accurately detect the weight of the material. Furthermore, to ensure the accuracy and sensitivity of the measurement data, the weighing tank 3 itself does not have any unnecessary connecting structures, allowing the weighing device 4 to more directly sense the mass changes of the material and the tank, minimizing interference from the external environment and equipment vibrations on the weighing results.

[0073] Since the weighing tank 3 no longer uses rigid supports, fixing bolts, or other load-bearing connections with the external system, the entire weighing tank 3 is almost "suspended" above the weighing device 4, allowing the weighing device 4 to more accurately capture real-time changes in the tank's own weight and the material's weight. In other words, all the weight of the weighing tank 3 is borne by the weighing device 4 and transmitted to the control system via sensors. This layout simplifies the overall structure and reduces installation difficulty, while also reducing off-center loading or mechanical coupling caused by additional supports, thereby improving weighing accuracy.

[0074] Weighing device 4 employs a weight-reduction metering method for material filling control. The core principle of weight-reduction metering is to determine whether the material discharge or filling has reached the preset target by real-time monitoring of the decrease in mass of weighing tank 3. Compared to traditional weight-adding metering (weighing the empty tank first, then adding material to the target weight), weight-reduction metering can simultaneously detect and adjust the flow rate during continuous material discharge or conveying, thereby achieving highly precise control over the actual filling volume. This has significant advantages for production processes requiring continuous feeding or precise proportioning.

[0075] In the weight-reduction metering method, the control system automatically calculates the actual material conveying volume based on the weight data fed back by the sensors and compares it with the target set value in real time. If the system detects that the material conveying is close to or has reached the set range, it can accelerate, decelerate, or pause the conveying process through means such as opening and closing valve 203 and speed adjustment, thereby achieving flexible control of the filling volume. This design is particularly suitable for high-precision batching or filling scenarios, such as in the food industry, improving production efficiency and quality consistency.

[0076] By independently installing a weighing device 4 at the bottom of the weighing tank 3 and adopting a weight-reduction metering method, both structural simplicity and weighing accuracy are balanced. By eliminating the additional connecting structure of the symmetrical weighing tank 3, the weighing device 4 can capture weight changes without interference, reducing measurement errors caused by external force coupling. Simultaneously, the weight-reduction metering method enables dynamic monitoring and adjustment during actual filling or feeding, resulting in more accurate and stable material quantitative control.

[0077] In the existing technology, when multiple weighing tanks 3 are connected to the same material box 1, they often rely on their respective weighing devices 4 to independently measure and control the discharge volume. However, if one of the weighing devices 4 fails or has a measurement error, it will not only lead to inaccurate measurement of the material volume in that tank, but may also introduce fluctuations in the supply pipeline, thereby affecting the stability or synchronization of other tanks.

[0078] The so-called communicating vessel structure refers to a structure that connects the material tank 1 to multiple containers (here, multiple weighing tanks 3) through pipes, utilizing the property of liquids or materials to automatically balance under gravity, thereby achieving synchronized liquid levels or the same static pressure. Essentially, this structure allows multiple weighing tanks 3 to share the same feeding environment: as long as the liquid level in the material tank 1 remains consistent, the contents of each weighing tank 3 will automatically tend towards the same liquid level or material pressure level under the action of the connecting pipes, thus achieving approximately the same output under ideal conditions.

[0079] Even if the weighing device 4 of one weighing tank 3 malfunctions or has a measurement deviation, the other weighing tanks 3 can still maintain the same or very similar liquid levels based on the principle of communicating vessels. In other words, when the inlet or outlet 102 of each tank has comparable resistance in the pipeline design and the material properties are stable, all weighing tanks 3 will "share" the liquid level pressure provided by the material tank 1. In this way, even if the measurement system of a single weighing tank 3 fails to work properly, the overall pipeline will still ensure that all weighing tanks 3 are under the same feeding or discharging conditions, thereby ensuring that the final output of material from each tank remains consistent or nearly consistent.

[0080] Based on the principle of communicating vessels, multiple tanks automatically maintain liquid level balance, reducing the risk of a single tank weighing device 4 causing a complete production failure. Driven by the same liquid level, the material properties output from each weighing tank 3 are essentially consistent, greatly benefiting the continuous stability of the production process.

[0081] In general, in a communicating vessel structure, the liquid levels in each tank will naturally tend to be consistent. This is based on the property that liquids remain horizontal under static conditions due to gravity. Specifically, in the technical solution, the material tank 1 and the weighing tank 3 are connected via the first conveying pipe 2. When the liquid level in one of the weighing tanks 3 drops, the level difference between it and the material tank 1 automatically drives the replenishment of liquid, ensuring that the liquid levels in all tanks remain synchronized. This effectively prevents abnormal fluctuations in the liquid level of a single tank.

[0082] During the filling process, the liquid in multiple weighing tanks 3 is discharged simultaneously, and due to the liquid level balance characteristics of the communicating vessel structure, the liquid level in each tank drops at the same rate. Thus, even if the weighing device 4 in one tank fails or experiences a measurement error, the filling volume still depends on the synchronicity of the liquid level drop, rather than the measurement result of a single weighing device 4. Therefore, even in the event of a failure of weighing device 4, the entire system can still ensure the consistency of the filling volume in different tanks through liquid level synchronization.

[0083] The communicating vessel structure can be widely used in processes requiring simultaneous discharge from multiple channels, such as food filling. Even in the event of a temporary failure of a single weighing device 4, the overall system can still maintain the uniformity of discharge across multiple tanks, thereby improving production continuity and fault tolerance to sudden failures. Therefore, in the parallel application of multiple weighing tanks 3, the communicating vessel structure not only avoids the failure risks of existing technologies but also ensures synchronized and stable material output.

[0084] refer to Figure 4 As shown, a leveling structure 5 is included. The weighing tank 3 is connected to the weighing device 4 via the leveling structure 5. This structure is used for fine-tuning the weighing tank 3 during installation and operation to ensure it remains relatively level or in the required precise orientation. The leveling structure 5 typically includes several adjustable supports or shims, allowing for flexible adjustment of the height, tilt angle, etc., of the weighing tank 3 according to the site environment and equipment load requirements. This structure not only compensates for unevenness of the ground or equipment platform but also reduces interference from vibration or external forces on the accuracy of weighing measurements.

[0085] By fine-tuning the tank using the leveling structure 5, unnecessary lateral forces, eccentric forces, or vibrations can be effectively reduced to reduce interference with the weighing sensor, thereby improving measurement accuracy and stability.

[0086] During installation, there is no need for overly complicated leveling of the balancing device 4 and the base. The leveling structure 5 can directly correct the tilt at the microscopic level. During subsequent maintenance or repair, if the tank tilts slightly due to foundation settlement or equipment displacement, it can also be easily readjusted through the leveling structure 5.

[0087] By introducing the leveling structure 5, this solution achieves higher stability and accuracy during the installation and measurement of the weighing tank 3, while maintaining good maintainability and adaptability, which helps to improve the reliability and service life of the overall weighing system.

[0088] In one specific embodiment, the leveling structure 5 includes a leveling plate 501 and an adjusting member 502. The leveling plate 501 is connected to the weighing device 4, and the adjusting member 502 is in the form of a screw and a nut, which is screwed onto the end face of the leveling plate 501 and connected to the bottom plate of the weighing tank 3. The level of the weighing tank 3 is adjusted by adjusting the vertical height of a certain adjusting member 502.

[0089] refer to Figure 3 and Figure 5As shown, a vent pipe 6 is provided on the top plate of the weighing tank 3, or on the circumferential wall of the top area. Its main purpose is to provide a smooth air passage for the weighing tank 3. The lower end of the vent pipe 6 is connected to the top plate of the weighing tank 3, while the upper end has a closed structure to prevent external impurities or foreign objects from directly entering the tank. This structure not only forms a relatively independent gas channel between the inside and outside of the tank, but also allows for venting or pressure regulation when necessary, thereby maintaining a good pressure environment inside the weighing tank 3.

[0090] An exhaust port 7 is provided at the top of the vent pipe 6 or on the circumferential wall of its top area to guide any gas generated inside the tank to the external environment. During the feeding process of the weighing tank 3, as liquid continuously enters the tank, the gas that originally occupied the tank space is gradually compressed. To avoid a rapid increase in pressure inside the tank or the generation of turbulence, this embodiment arranges the vent pipe 6 in the top area of ​​the weighing tank 3, and provides an exhaust port 7 at its top or on its circumferential wall. This allows the gas inside the tank to be slowly discharged along the vent pipe 6 and the exhaust port 7, ensuring that the pressure inside the tank does not rise suddenly, while effectively maintaining smooth gas flow inside the tank.

[0091] To maintain a stable liquid level and minimize interference with weighing results during the feeding process, this embodiment employs a slow venting method, creating a certain degree of positive pressure within the tank. Specifically, the opening size of the vent 7 and the cross-sectional area of ​​the air guide pipe 6 are designed to ensure a relatively smooth and slow gas discharge rate, preventing the instantaneous release of large amounts of gas. The resulting slight positive pressure suppresses liquid level fluctuations and reduces the impact of external airflow on the weighing system within the tank, thereby improving weighing stability and measurement accuracy.

[0092] In this design, the weighing tank 3 is interconnected with the external material tank 1, the first conveying pipe 2, and other components via pipes, forming a communicating vessel structure. During feeding, the liquid level inside the tank rises, causing gas to escape and communicate with the outside environment through the vent pipe 6 and the exhaust port 7. This ensures that the tank maintains positive pressure without excessive gas expansion. This communicating vessel structure ensures that the liquid levels between the material tank 1 and the weighing tank 3 remain balanced, and that the weighing tank 3 maintains a stable pressure environment during feeding and discharging, guaranteeing the reliability of the liquid level and weighing data.

[0093] By slowly venting through the air guide pipe 6 and the exhaust port 7, a moderate positive pressure can be maintained inside the tank, reducing feed turbulence and large fluctuations in the liquid level, thus improving the accuracy of weighing measurements. Since the gas is not ejected rapidly and does not create negative pressure to draw in external impurities, it helps maintain the cleanliness of the tank's internal environment.

[0094] In a specific embodiment, the diameter D1 of the exhaust hole 7 and the diameter D2 of the air duct 6 satisfy: D1 = k × D2. k is a proportionality coefficient, and usually 0.1 ≤ k ≤ 0.3 (that is, the diameter of the exhaust hole 7 is about 10% to 30% of the diameter of the air duct 6). If the exhaust hole 7 is too large (k has a large value), the gas in the tank will be discharged too fast, and it is not easy to maintain a positive pressure environment slightly higher than the atmospheric pressure. If the exhaust hole 7 is too small (k has a small value), the pressure in the tank will rise too fast during feeding, which may cause measurement errors or safety hazards.

[0095] In a specific embodiment, the air guiding structure, that is, the diameter D2 of the air duct 6 and the diameter D3 of the weighing tank 3 satisfy: D2 < D3. By limiting the relatively small diameter of the air guiding structure, this embodiment effectively maintains the positive pressure in the tank. It can reduce the influence of air pressure fluctuations on the liquid level stability, thereby protecting the measurement environment of the weighing structure and preventing weighing errors caused by剧烈 changes in the liquid level. By restricting the gas discharge rate, a stable tank environment is formed to ensure the liquid level stability and measurement reliability during the weighing process.

[0096] Through this diameter limitation, this embodiment forms a moderate positive pressure environment in the weighing tank 3, which not only improves the liquid level stability and weighing accuracy, but also provides a reliable technical guarantee for gas-liquid separation and the smooth operation of the system.

[0097] The feed box 1 is located at the first height position of the system, and the exhaust hole 7 is located at the third height position of the system. The height position is defined as the maximum vertical distance between the feed box 1 and the exhaust hole 7 relative to the same reference plane. This definition clarifies the relative height distribution of the feed box 1 and the exhaust hole 7 in space, providing a clear structural basis for the overall design of the system.

[0098] To ensure the reasonable functional setting of the exhaust hole 7, this embodiment stipulates that the third height position of the exhaust hole 7 is greater than or equal to the first height position of the feed box 1. This height relationship ensures that the exhaust hole 7 can effectively discharge gas without affecting the exhaust efficiency due to the height fluctuation of the liquid level in the feed box 1.

[0099] The height distribution of the feed box 1 and the exhaust hole 7 optimizes the gas-liquid separation and liquid level control in the actual operation of the system through a clear relative position relationship. The exhaust hole 7 being at an equal or higher position relative to the feed box 1 can effectively prevent liquid from entering the exhaust hole �, prevent blockage of the gas passage, and at the same time meet the requirement of smooth exhaust.

[0100] It includes a bracket 8. This bracket 8 is used to connect between the air duct 6 and the weighing tank 3. The bracket 8 includes an annular fixing ring and multiple legs connecting the fixing ring and the weighing tank 3.

[0101] Reference Figure 1 and Figure 2As shown, a filling machine includes the aforementioned weighing structure. The filling material is a variety of materials containing solid particles or with viscous properties, such as chili oil, hot sauce, sesame oil, honey, concentrated jam, or a variety of highly fluid materials, such as soy sauce, vinegar, edible oil, fruit juice, etc.

[0102] The filling machine includes a filling pipeline 9. During weighing, the filling pipeline 9 is closed, and the material enters from the material bin 1 into the first conveying pipeline 2, and then into the weighing tank 3 for weighing. During filling, the first conveying pipeline 2 is closed, the second conveying pipeline 10 is open, the filling pipeline 9 is open, and the weighing device 4 measures the filling amount of the material using a weight reduction metering method.

[0103] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inner", "outer", "inner side", "outer side", etc. indicate the orientation or positional relationship.

[0104] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0105] In the description of the embodiments of this utility model, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0106] In the description of the embodiments of this utility model, it should be understood that "-" and "~" represent a range between two values, and this range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0107] In the description of the embodiments of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0108] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weight-reducing material conveying structure for filling, characterized in that, include: Weighing tank; A weighing device is connected to the weighing tank; The weighing device is configured to acquire the weight of the material in the weighing tank in real time. The weighing tank has a first feed inlet and a second feed inlet; The first feed port is configured to connect to the first feed pipeline; The second feed port is configured to connect to the second feed pipeline; Furthermore, the first conveying pipeline and the second conveying pipeline are used for feeding and discharging the weighing tank, respectively.

2. The weight-reducing filling material conveying structure according to claim 1, characterized in that, The first conveying pipeline is connected to the material box; The second conveying pipeline is connected to the filling pipeline; Furthermore, the material bin, the first conveying pipeline, and the weighing tank are arranged in a U-shape or approximately U-shape in the vertical plane.

3. The weight-reducing filling material conveying structure according to claim 2, characterized in that, Including the air guiding structure; The air guiding structure is connected to the weighing tank; Wherein, the diameter D2 of the air guiding structure and the diameter D3 of the weighing tank satisfy: D2 <D3。 4. The weight-reducing filling material conveying structure according to claim 3, characterized in that, The air guiding structure is provided with an exhaust port; Wherein, the diameter of the exhaust port is D1, and the diameter of the air guiding structure is D2, satisfying: D1=k×D2, where k is a proportionality coefficient, 0.1≤k≤0.

3.

5. The weight-reducing filling material conveying structure according to claim 4, characterized in that, The hopper is located at the first height position; The exhaust port is located at the third height position; Wherein, the height position is the maximum vertical distance between the material box and the vent hole and the same reference plane; Furthermore, the third altitude position is greater than or equal to the first altitude position.

6. The weight-reducing filling conveying structure according to claim 2, characterized in that, The first conveying pipeline has a first section and a second section; The first segment is arranged vertically; The second segment is arranged horizontally; Furthermore, the first segment is connected to the bottom of the hopper; Furthermore, the second segment is connected to the bottom of the weighing tank, or to the circumferential wall near the bottom.

7. The weight-reducing filling material conveying structure according to claim 6, characterized in that, The first segment and the second segment have a corrugated structure.

8. The weight-reducing filling material conveying structure according to claim 1, characterized in that, Including leveling structures; The leveling structure is located at the bottom of the weighing tank and is connected to the weighing device; The leveling structure is configured to adjust the levelness of the weighing tank.

9. The weight-reducing filling material conveying structure according to claim 8, characterized in that, The leveling structure includes: A leveling plate is connected to the weighing device; An adjusting component is screwed onto the leveling plate, and the bottom of the weighing tank is connected to multiple adjusting components; The adjusting member has an adjusting stroke in the vertical direction.

10. A filling machine, characterized in that, include: The weight-reducing material conveying structure for filling as described in any one of claims 1 to 9 above.

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