Weighing structure for filling and filling machine

Abstract

The utility model relates to a weighing structure for filling and a filling machine, and belongs to the technical field of filling. On a conveying path of a filling medium, the weighing structure for filling is located on the upstream of a filling head and at least comprises a metering cavity and a weighing component. The metering chamber is configured to carry a filling medium; and the weighing part is configured to obtain the mass of the filling medium in the metering cavity. The metering mode in the prior art at a filling station (a platform for bearing filling bottles) is abandoned, so that the problem of metering result deviation caused by large kinetic energy of a filling medium during filling is avoided. Furthermore, when the weighing structure is arranged at the front end of the filling process (the process of conveying the filling medium from the filling head to the filling bottle), the bad influence of the kinetic energy of the filling medium on the metering result can be weakened, and the target filling quantity precision of the filling medium is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filling weighing, relates to a technology for improving the filling target amount accuracy of a filling medium, and specifically relates to a filling weighing structure and a filling machine. Background Art

[0002] When filling a filling medium (such as a liquid or a solid-liquid mixture), the filling amount of the filling medium needs to be measured to ensure that the actual filling amount is the desired target filling amount.

[0003] In the prior art, the following methods are usually used to measure the liquid filling amount:

[0004] First, a metering structure is set at the filling position, and the metering structure adopts a weighing metering method. However, this method has the following problems: 1. Due to a certain error in the weight or size of the filling container, there is a certain difference between the current filling volume obtained by the metering structure and the target filling volume, resulting in inaccurate measurement results; 2. During filling, the liquid to be filled has a certain kinetic energy, which will impact the filling container, resulting in fluctuations in the current filling volume obtained by the metering structure, thereby affecting the determination of the target filling volume of the liquid to be filled;

[0005] Secondly, the metering structure adopts a volumetric metering method, but this method has the following problems: due to changes in environmental factors, such as temperature increase or decrease, the metering result of the metering structure will be affected, resulting in a large difference between the current filling volume and the target filling volume.

[0006] It can be seen that when filling liquid, no matter which of the above methods is used, due to defects in the metering position and metering method of the metering structure, there is a significant error between the current filling volume of the liquid to be filled and the target filling volume. Utility Model Content

[0007] In order to solve the above-mentioned problems in the prior art, the utility model provides a filling weighing structure and a filling machine.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A filling weighing structure is provided, which is located upstream of a filling head on a conveying path of a filling medium and comprises at least:

[0010] Metering chamber and weighing components;

[0011] The metering chamber is configured to carry a filling medium;

[0012] The weighing component is configured to obtain the mass of the filling medium in the metering chamber.

[0013] Preferably, the metering chamber has a connection assembly;

[0014] Wherein, the connection assembly is configured to communicate with an input pipeline and / or an output pipeline of the filling medium;

[0015] Wherein, the connecting assembly is located at the bottom of the metering chamber;

[0016] Or, the height H1 of the connecting assembly and the height H2 of the metering chamber satisfy:

[0017]

[0018] Preferably, the connection assembly at least comprises:

[0019] Connection ports and connection lines;

[0020] Wherein, the connection port is arranged in the metering chamber;

[0021] Wherein, a port of the connecting pipeline is in communication with the connecting port;

[0022] Furthermore, another port of the connecting pipeline is configured to communicate with an input pipeline and / or an output pipeline of the filling medium.

[0023] Preferably, the connecting pipeline has at least one floating section exhibiting flexible properties.

[0024] Preferably, it also includes:

[0025] Leveling structures;

[0026] Wherein, the leveling structure is at least configured to adjust the horizontality of the metering chamber.

[0027] Preferably, the leveling structure at least comprises:

[0028] Leveling discs and leveling pieces;

[0029] Wherein, the leveling member is assembled to the leveling disk and connected to the metering chamber.

[0030] Preferably, the leveling member and the metering chamber form a plurality of adjustment points, and the adjustment action of the leveling member at each of the adjustment points is independent.

[0031] The utility model also provides a filling machine, which at least comprises:

[0032] container;

[0033] A first pipeline and a second pipeline;

[0034] Filling structure;

[0035] A filling weighing structure as described in any one of the above technical solutions;

[0036] Wherein, the first pipeline connects the container and the metering chamber of the filling weighing structure;

[0037] Wherein, the second pipeline connects the filling structure and the metering chamber of the filling weighing structure.

[0038] Preferably, it also includes:

[0039] Control components;

[0040] The control component is arranged in the first pipeline and the second pipeline.

[0041] Preferably, the control component at least includes:

[0042] Valve body one and valve body two;

[0043] Wherein, the valve body 1 is assembled to the first pipeline;

[0044] The second valve body is assembled to the second pipeline;

[0045] Wherein, the first pipeline and the second pipeline are not opened or closed at the same time.

[0046] Preferably, it also includes:

[0047] An oil return pipeline, one end of which is arranged to be connected to the metering chamber of the filling weighing structure, and the other end of which is arranged at the top of the container.

[0048] The utility model provides a weighing structure for filling and a filling machine. The beneficial effects of the utility model are embodied in:

[0049] Abandon the existing method of measuring at the filling station (the platform carrying the filling bottles) to avoid the problem of deviation in the measurement results caused by the large kinetic energy of the filling medium during filling. Furthermore, when the weighing structure is placed at the front end of the filling process (the process of conveying the filling medium from the filling head to the filling bottle), it can weaken the adverse effect of the kinetic energy of the filling medium on the measurement results and improve the accuracy of the target filling amount of the filling medium;

[0050] Compared with the filling process, the conveying kinetic energy of the filling medium at this stage is relatively small, and the fluctuations when entering and after entering the metering chamber are relatively small, and thus the adverse effects on the metering results are relatively weak. The weighing structure weighs the mass of the filling medium in the metering chamber. Compared with the volumetric metering method, the mass of the filling medium is not significantly affected by environmental factors, that is, stable parameters can be obtained more accurately, thereby ensuring the accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is one of the three-dimensional diagrams of the weighing structure for filling proposed by the utility model;

[0052] Figure 2 This is the second stereogram of the weighing structure for filling proposed by the utility model;

[0053] Figure 3 for Figure 2 A partial enlarged view of the structure shown;

[0054] Figure 4 This is one of the three-dimensional diagrams of the filling machine proposed in the utility model;

[0055] Figure 5 This is the second stereoscopic diagram of the filling machine proposed by the utility model.

[0056] Description of reference numerals:

[0057] 1. Measuring chamber; 2. Weighing component; 3. Connecting assembly; 301. Connecting port; 302. Connecting pipeline; 3021. Floating section; 4. Leveling structure; 401. Leveling plate; 402. Leveling member; 5. Container; 6. First pipeline; 7. Second pipeline; 801. Valve body one; 802. Valve body two; 9. Oil return pipeline. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0059] See also Figures 1 to 5 As shown, the specific embodiments provided by the utility model are as follows:

[0060] like Figures 1 to 3 As shown, the first embodiment of the utility model provides a weighing structure for filling, which is located upstream of the filling head on the conveying path of the filling medium and at least includes:

[0061] Measuring chamber 1 and weighing component 2;

[0062] The metering chamber 1 is configured to carry a filling medium;

[0063] The weighing component 2 is configured to obtain the mass of the filling medium in the metering chamber 1 .

[0064] In this embodiment, the setting position of the filling weighing structure is optimized to the upstream of the filling head. Specifically, the conveying path of the filling medium refers to the flow path in which the filling medium is conveyed from the storage device (the container 5 storing the filling medium) to the filling head through the pipeline. Upstream means: calibrated with the conveying path. The purpose of this structural form is to abandon the method of measuring at the filling station (the platform carrying the filling bottle) in the prior art to avoid the problem of deviation in the measurement result caused by the large kinetic energy of the filling medium during filling. Furthermore, when the weighing structure is placed at the front end of the filling process (the process in which the filling medium is conveyed from the filling head to the filling bottle), it can weaken the adverse effect of the kinetic energy of the filling medium on the measurement result and improve the accuracy of the target filling amount of the filling medium.

[0065] On the basis of the above, this embodiment optimizes the metering form, that is, adopts the method of weighing the filling medium. In the prior art, the influence of environmental factors will lead to inaccurate measurement results of the volumetric metering method. Specifically, when the ambient temperature rises, the filling medium will undergo a certain amount of thermal expansion, resulting in a large deviation between the actual filling volume and the target filling volume. Alternatively, when there is a deviation in the processing size of the filling bottle, the actual filling volume of the filling medium will also be inconsistent with the target filling volume.

[0066] Therefore, in this embodiment, the weighing structure is divided into a metering chamber 1 and a weighing component 2. The metering chamber 1 is used to carry the filling liquid, and it can be connected to the conveying pipeline of the filling medium (specifically, it refers to the pipeline that connects the storage device of the filling medium with the metering chamber 1), so that the metering chamber 1 can accommodate the filling medium before the filling process is performed. Compared with the filling process, the conveying kinetic energy of the filling medium at this stage is relatively small, and its fluctuation when entering the metering chamber 1 and after entering the metering chamber 1 is relatively small, and thus the adverse effect on the metering result is relatively weak. The weighing structure weighs the mass of the filling medium in the metering chamber 1. Compared with the volumetric metering method, the mass of the filling medium is not significantly affected by environmental factors, that is, stable parameters can be obtained more accurately, thereby ensuring the accuracy of the measurement results.

[0067] The metering chamber 1 may be formed by an inner cavity of a main body (such as a metering barrel, etc.), and the weighing component 2 may be a weighing sensor.

[0068] Among them, the weighing method can be:

[0069] First, directly obtain the filling mass of the filling medium. Specifically, the filling medium enters the metering chamber 1, and the weighing component 2 obtains the mass of the current filling medium in real time. When the mass reaches the mass corresponding to the target filling amount, the metering chamber 1 stops the liquid inflow state (referring to the state of the filling medium entering the metering chamber 1) and switches to the liquid outflow state (referring to the state of the filling medium flowing out of the metering chamber 1).

[0070] Second, the filling quality of the filling medium is obtained indirectly. Specifically, the weighing component 2 weighs the filling medium in the metering chamber 1 when the liquid is in the state of filling, and weighs the filling medium in the state of discharging the liquid, and calibrates the filling amount by the reduction of the filling medium, that is, the accurate filling amount is obtained by the difference method, thereby improving the accuracy of the weighing structure.

[0071] It should be noted that the second weighing method requires pre-processing, that is, filling the pipeline with filling medium in advance.

[0072] The first weighing method has the following advantages: it can obtain the weight of the filling medium simply and efficiently to improve the filling efficiency;

[0073] The advantage of the second weighing method is that it can accurately and efficiently obtain the weight of the filling medium to avoid the problem of filling volume deviation due to factors such as pipeline residue. Moreover, when the actual filling volume of the filling medium is close to the target filling volume, the traditional weighing method is difficult to accurately guarantee the filling volume accuracy within a small range of values, and this method makes the small range of numerical filling volume more accurate.

[0074] The second embodiment of the utility model proposes a weighing structure for filling, and on the basis of the first embodiment, the metering chamber 1 has a connecting component 3;

[0075] Wherein, the connection assembly 3 is configured to communicate with an input pipeline and / or an output pipeline of the filling medium;

[0076] Wherein, the connecting component 3 is located at the bottom of the metering chamber 1;

[0077] Or, the height H1 of the connecting assembly 3 and the height H2 of the metering chamber 1 satisfy:

[0078] 0

[0079] In this embodiment, it is further found that there is a certain kinetic energy impact when the filling medium enters the metering chamber 1. This kinetic energy impact makes the mass value obtained by the weighing component 2 fluctuate greatly, thereby increasing the risk of inaccurate metering results.

[0080] Based on this, the setting position of the connecting component 3 is optimized.

[0081] The connecting assembly 3 can be arranged at the bottom of the metering chamber 1, specifically at the bottom surface of the metering chamber 1. By introducing liquid from the bottom of the metering chamber 1, the kinetic energy of the filling medium entering the metering chamber 1 is slowed down, thereby weakening the adverse effect of the kinetic energy on the weighing component 2, and ensuring the accuracy of the metering result.

[0082] ​The connection component 3 can be arranged in the metering chamber 1 according to the above parameters. The reason is that when the filling medium enters the metering chamber 1, its kinetic energy will gradually increase due to its gravity, which will cause the mass obtained by the weighing component 2 to have a large fluctuation. Therefore, the closer the setting position of the connection component 3 is to the bottom of the metering chamber 1, the smaller the kinetic energy increase rate will be, and the more accurate the metering result will be.

[0083] On the basis of the above, the filling medium is weighed in the metering chamber 1 in a static or nearly static state to avoid the problem of obtaining inaccurate quality results.

[0084] The third embodiment of the present utility model proposes a weighing structure for filling, and based on the previous embodiment, the connecting component 3 at least includes:

[0085] A connecting port 301 and a connecting pipeline 302;

[0086] Wherein, the connection port 301 is disposed in the metering chamber 1;

[0087] Wherein, one port of the connecting pipeline 302 is in communication with the connecting port 301;

[0088] Furthermore, another port of the connecting pipeline 302 is configured to communicate with an input pipeline and / or an output pipeline of the filling medium.

[0089] In this embodiment, the specific structure of the connection component 3 is limited.

[0090] The liquid inlet structure and the liquid outlet structure of the metering chamber 1 are both carried by the connecting pipeline 302. Specifically, the other port of the connecting pipeline 302 is connected to the input pipeline of the filling medium and the output pipeline (filling pipeline). The advantage of this structure is that it reduces the residual filling medium in the pipeline and ensures the accuracy of the filling amount.

[0091] The fourth embodiment of the present invention provides a weighing structure for filling, and based on the previous embodiment, the connecting pipeline 302 has at least one floating section 3021 showing flexible characteristics.

[0092] In this embodiment, the floating section 3021 is used to allow the metering chamber 1 to float, because, since this embodiment adopts a weighing metering method, as the filling medium enters the metering chamber 1, the metering chamber 1 will gradually sink, so that the mass parameter is obtained by the weighing component 2. In order to reduce the restraining force of the connecting pipeline 302 on the metering chamber 1, the floating section 3021 with flexible characteristics is used.

[0093] Specifically, flexible properties refer to elastic and deformable properties.

[0094] The fifth embodiment of the utility model proposes a weighing structure for filling, and based on the previous embodiment, further comprises:

[0095] Leveling structure 4;

[0096] The leveling structure 4 is at least configured to adjust the horizontality of the metering chamber 1 .

[0097] In this embodiment, it is further found that if there is a deviation in the levelness of the metering chamber 1 (the levelness of the bottom or top surface), the filling medium will deviate and accumulate in the metering chamber 1, thereby changing its center of gravity, which will lead to inaccurate weighing structure.

[0098] Based on this, a leveling structure 4 is added. By adjusting the leveling structure 4, the level of the metering chamber 1 can be adjusted and deviation can be avoided, thereby adjusting the center of gravity of the filling medium and ensuring the accuracy of the weighing result.

[0099] The sixth embodiment of the present utility model proposes a weighing structure for filling, and based on the previous embodiment, the leveling structure 4 at least includes:

[0100] A leveling plate 401 and a leveling member 402;

[0101] The leveling member 402 is assembled to the leveling disk 401 and connected to the metering chamber 1 .

[0102] In this embodiment, the specific structure of the leveling structure 4 is limited.

[0103] The leveling plate 401 is provided with a plurality of mounting holes, into which the leveling member 402 is screwed. Specifically, the leveling member 402 is composed of a leveling screw and a leveling nut, and the level of the metering chamber 1 is adjusted by adjusting the leveling screw and the leveling nut.

[0104] The seventh embodiment of the present utility model proposes a weighing structure for filling, and based on the previous embodiment, the leveling member 402 and the metering chamber 1 form multiple adjustment points, and the adjustment action of the leveling member 402 at each adjustment point is independent.

[0105] In this embodiment, the number of leveling members 402 is consistent with the number of adjustment points, which can be 3, 4, etc. By adjusting different positions of the bottom surface of the measuring chamber 1, there is no deviation in its levelness, thereby achieving independent adjustment of multiple positions to ensure the accuracy of the weighing result.

[0106] like Figures 4 to 5 As shown, the eighth embodiment of the utility model provides a filling machine, comprising at least:

[0107] Container 5;

[0108] A first pipeline 6 and a second pipeline 7;

[0109] Filling structure;

[0110] A filling weighing structure as described in any one of the above embodiments;

[0111] Wherein, the first pipeline 6 connects the container 5 and the metering chamber 1 of the weighing structure for filling;

[0112] The second pipeline 7 connects the filling structure with the metering chamber 1 of the filling weighing structure.

[0113] In this embodiment, the container 5 is used to store the filling medium, and the first pipeline 6 is used to connect the container 5 with the metering chamber 1 so that the filling medium enters the metering chamber 1 for weighing. The second pipeline 7 is used to connect the metering chamber 1 with the filling structure so that the weighed filling medium enters the filling structure for filling. The filling structure includes at least a filling head and a filling platform.

[0114] On the basis of the above, the filling machine provided in this embodiment has all the above beneficial effects, which will not be described in detail here.

[0115] In this embodiment, a control component is also included, which is composed of a valve body 1 801 and a valve body 2 802 .

[0116] In the stage of liquid inflow into the metering chamber 1, the valve body 1 801 controls the first pipeline 6 to open, so that the filling medium enters the metering chamber 1 for weighing, and the valve body 2 802 controls the second pipeline 7 to close, so as to prevent the filling medium from flowing out. After the weighing and metering of the filling medium is completed, the valve body 1 801 controls the first pipeline 6 to close, and the valve body 2 802 controls the second pipeline 7 to open, so that the filling medium enters the filling stage.

[0117] In the above embodiment, an oil return pipeline 9 is also included, and the oil return pipeline 9 is in a U-shaped structure. When the weighing component is abnormal, it is very easy to cause the filling medium in the metering chamber to overflow. Therefore, by adding the oil return pipeline 9 at the top of the metering chamber, the overflow of the filling medium is avoided, so that the filling medium flows back to the container through the oil return pipeline 9.

[0118] In the description of the embodiments of the present invention, it needs to be understood that terms such as “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “center”, “top”, “bottom”, “top”, “bottom”, “inside”, “outside”, “inside”, and “outside” indicate orientation or positional relationships.

[0119] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0120] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0121] In the description of the embodiments of the present utility model, it is necessary to understand that "-" and "~" represent the range between two values, and the 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.

[0122] In the description of the embodiments of the present utility model, the term "and / or" is used herein to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0123] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weighing structure for filling, characterized in that: On the conveying path of the filling medium, the filling weighing structure is located upstream of the filling head and at least includes: Metering chamber and weighing components; The metering chamber is configured to carry a filling medium; The weighing component is configured to obtain the mass of the filling medium in the metering chamber.

2. The weighing structure for filling according to claim 1, characterized in that: The metering chamber has a connecting assembly; Wherein, the connection assembly is configured to communicate with an input pipeline and / or an output pipeline of the filling medium; Wherein, the connecting assembly is located at the bottom of the metering chamber; Or, the height H1 of the connecting assembly and the height H2 of the metering chamber satisfy:

3. The weighing structure for filling according to claim 2, characterized in that: The connection assembly at least comprises: Connection ports and connection lines; Wherein, the connection port is arranged in the metering chamber; Wherein, a port of the connecting pipeline is in communication with the connecting port; Furthermore, another port of the connecting pipeline is configured to communicate with an input pipeline and / or an output pipeline of the filling medium.

4. The weighing structure for filling according to claim 3, characterized in that: The connecting pipeline has at least one floating section showing flexible characteristics.

5. The weighing structure for filling according to any one of claims 1 to 4, characterized in that: Also includes: Leveling structures; Wherein, the leveling structure is at least configured to adjust the horizontality of the metering chamber.

6. The weighing structure for filling according to claim 5, characterized in that: The leveling structure at least comprises: Leveling discs and leveling pieces; Wherein, the leveling member is assembled to the leveling disk and connected to the metering chamber.

7. The weighing structure for filling according to claim 6, characterized in that: The leveling member and the metering chamber form a plurality of adjustment points, and the adjustment action of the leveling member at each adjustment point is independent.

8. A filling machine, characterized in that: At least: container; A first pipeline and a second pipeline; Filling structure; A filling weighing structure as claimed in any one of claims 1 to 7; Wherein, the first pipeline connects the container and the metering chamber of the filling weighing structure; Wherein, the second pipeline connects the filling structure and the metering chamber of the filling weighing structure.

9. The filling machine according to claim 8, characterized in that: Also includes: Control components; The control component is arranged in the first pipeline and the second pipeline.

10. The filling machine according to claim 9, characterized in that Also includes: An oil return pipeline, one end of which is arranged to be connected to the metering chamber of the filling weighing structure, and the other end of which is arranged at the top of the container.

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