Weighing checking device

Abstract

The utility model relates to a weighing checking device, and belongs to the field of material conveying or metering. Comprising a weighing funnel and a meter which are arranged on an upper-stage belt conveyor or a lower-stage belt conveyor, three weighing sensors are arranged on the weighing funnel, and the geometric center formed by the three weighing sensors coincides with the gravity center formed by the weighing funnel and materials in the vertical direction; before weighing, the weighing weight is placed on the weighing funnel, the weighing sensor is checked through the weighing weight, and then the counter is checked by comparing the material weight sensed by the weighing sensor with the material weight sensed by the counter. According to the utility model, the funnel on the belt conveyor not only can meet the material transfer function, but also has the material weighing function, so that the weighing accuracy of the meter can be checked under the condition of ensuring the weighing accuracy of the weighing funnel, and a basis is provided for the correction of the meter; the overall arrangement is simple, the checking method and the weighing device are reasonable in design, the cost is low, the time is short, the checking precision is high, and the practical value is high.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying or metering, and relates to a weighing and calibration device. Background Technology

[0002] In today's grand wave of development, measuring instruments are widely used in all walks of life, becoming a key tool to ensure the accuracy and fairness of production, trade, and other processes. From raw material proportioning in industrial production to the weighing of goods in commercial trade, measuring instruments play an indispensable role.

[0003] For the bulk material conveying industry, the importance of metering devices is self-evident. In this industry, accurately measuring the cost of materials and precisely controlling the batching accuracy directly impacts a company's production efficiency and product quality. To achieve this, metering devices are typically installed on belt conveyors to measure bulk materials in real time. Imagine a busy bulk material conveying production line where a continuous stream of bulk materials such as coal and ore is rapidly transported via belt conveyors, with metering devices accurately recording the weight of materials passing through at every moment, providing crucial data support for the company.

[0004] However, measuring instruments are not perfect, one-time precision devices. Due to various factors, weighing errors will appear after a period of use. These factors constantly threaten the accuracy of measurement. Signal processing errors may cause deviations in data transmission and calculation; weighing errors may stem from sensor instability or aging; speed measurement errors will affect the accurate measurement of material conveying speed; calibration errors may occur during the initial calibration process; in addition, environmental factors such as changes in temperature, humidity, and vibration can also interfere with the performance of the measuring instrument. Therefore, regular calibration and adjustment of measuring instruments are essential measures to ensure measurement accuracy.

[0005] Currently, the existing methods for calibrating measuring instruments mainly include code verification, chain code verification, offline physical verification, and online physical verification.

[0006] Hanging barcode verification and chain barcode verification are relatively traditional verification methods. They are relatively simple to operate and low in cost, but they have obvious limitations. Neither hanging barcodes nor chain barcodes can completely reproduce the unique properties of materials when passing through the meter. During the conveying process, the distribution state and flow characteristics of the material differ greatly from those of hanging barcodes or chain barcodes, which leads to lower verification accuracy and makes it difficult to meet the requirements of high-precision metering.

[0007] Traditional offline physical verification methods, while simulating the state of materials more realistically, are cumbersome and time-consuming. They require removing the measuring instrument from the production line, verifying it using standard weights or other physical objects, and then reinstalling it. This process not only consumes significant manpower and time but also disrupts normal production.

[0008] Online physical verification allows for real-time calibration of measuring instruments, avoiding production interruptions caused by offline verification. However, this method also has significant drawbacks: the system is complex, requiring specialized verification equipment and control programs, resulting in high costs that may be unaffordable for some small businesses.

[0009] Therefore, a novel weighing and calibration method and device are needed to solve the above-mentioned technical problems. Utility Model Content

[0010] In view of this, the purpose of this utility model is to provide a weighing verification device that enables the hopper on the belt conveyor to not only meet the material transfer function, but also to have the material weighing function. Under the condition of ensuring the weighing accuracy of the weighing hopper, the weighing accuracy of the meter can be verified, and a basis for the calibration of the meter can be provided.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A weighing calibration device includes a weighing funnel, a weighing sensor disposed on the outer periphery of the weighing funnel; a weighing weight of known weight is placed on the weighing sensor for calibrating the weighing sensor; the weighing sensor senses the weight of the material in the weighing funnel.

[0013] Optionally, three weighing sensors are arranged along the outer periphery of the weighing funnel.

[0014] Optionally, the geometric center formed by the three weighing sensors coincides in the vertical direction with the center of gravity formed by the weighing funnel and the material.

[0015] Optionally, the weighing funnel includes an upper funnel, a middle funnel, and a lower funnel connected in sequence; the weighing sensor and the weighing weights are both installed on the outer periphery of the middle funnel.

[0016] Optionally, the upper funnel and the middle funnel are connected by a flange; a switch gate valve is provided between the middle funnel and the lower funnel.

[0017] Optionally, a support plate is provided on the outer periphery of the central funnel, the support plate is placed on the weighing sensor, and the weighing weight is placed on the support plate.

[0018] Optionally, the weighing funnel is located at the rear end of the upper or lower belt conveyor along the conveying direction.

[0019] Optionally, it also includes a meter installed on the upper or lower belt conveyor to sense the weight of the material on the belt conveyor.

[0020] Optionally, the weighing funnel and the metering device are respectively installed on the upper-level belt conveyor or the lower-level belt conveyor, and the material weights sensed by the weighing sensor and the metering device are compared to verify the metering device.

[0021] Optionally, the weighing funnel and the metering device are simultaneously installed on the upper or lower belt conveyor to compare the material weights sensed by the weighing sensor and the metering device, thereby verifying the metering device.

[0022] The beneficial effects of this utility model are as follows:

[0023] This invention is applicable to industries such as metallurgy, ports, and coal. It consists of a belt conveyor, a metering device, and a weighing funnel. The weighing funnel can serve as both a material transfer funnel and a weighing funnel for calibrating the metering device, offering high operability and reducing calibration costs. The metering device and weighing funnel can be simultaneously installed on the upper or lower belt conveyor, or separately on the upper or lower belt conveyor, providing high flexibility in overall layout. Before weighing, the weighing funnel can perform self-calibration, and then the weighing of the metering device is calibrated using the weighing funnel, ensuring high accuracy.

[0024] In summary, this utility model features a simple overall layout, a reasonable design for the verification method and weighing device, convenient verification steps, low verification cost and time, high verification accuracy, and easy operation. Furthermore, it allows for flexible adjustment of the positional relationship between the measuring instrument and the weighing funnel. Under the condition of ensuring the accuracy of the weighing funnel, the weighing accuracy of the measuring instrument is verified through the weighing results of the weighing funnel, and a basis is provided for the calibration of the measuring instrument, thus possessing strong practical value.

[0025] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the overall structure of the weighing funnel of this utility model;

[0028] Figure 2 This is a schematic diagram of the weighing funnel of this utility model for weighing materials;

[0029] Figure 3 This is a plan view of the weighing sensor of this utility model;

[0030] Figure 4 The verification process of this utility model Figure 1 ;

[0031] Figure 5 The verification process of this utility model Figure 2 ;

[0032] Figure 6 The verification process of this utility model Figure 3 ;

[0033] Figure 7 The verification process of this utility model Figure 4 .

[0034] Figure label:

[0035] 1 Measuring device, 2 Weighing hopper, 3 Upper belt conveyor, 4 Lower belt conveyor, 5 Mounting platform, 6 Material, 7 Weighing hopper and material center of gravity, 21 Upper hopper, 22 Middle hopper, 23 Lower hopper, 24 Weighing weight, 25 Flange, 26 Support plate, 27 Weighing sensor, 28 Switch gate valve, 29 Geometric center of weighing sensor. Detailed Implementation

[0036] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0038] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] Example 1

[0040] Please see Figures 1 to 7 This is a weighing calibration device, comprising a weighing funnel 2, which is located at the rear end of an upper-level belt conveyor 3 or a lower-level belt conveyor 4 along the conveying direction. A weighing sensor 27 is mounted on the outer periphery of the weighing funnel 2, transmitting the weight of the weighing funnel 2 to the weighing sensor 27. A weighing weight 24 of known weight is placed on the weighing sensor 27 for calibration. The weighing sensor 27 senses the weight of the material 6 inside the weighing funnel 2. The weighing funnel 2 serves both as a material transfer container and as a weighing container for calibrating the measuring device 1.

[0041] Three load cells 27 are respectively set on the outer periphery of the weighing funnel 2. The principle of three points forming a surface is used to ensure that each sensor is in effective contact with the mounting surface. The geometric center 29 formed by the three load cells 27 coincides with the center of gravity 7 formed by the weighing funnel 2 and the material 6 in the vertical direction to reduce weighing deviation.

[0042] The weighing verification device of this utility model also includes a metering device 1 installed on the upper belt conveyor 3 or the lower belt conveyor 4, for sensing the weight of the material 6 on the belt conveyor. The weighing funnel 2 should have a reasonable weighing volume so that the material 6 passing through the metering device 1 meets the minimum cumulative load requirement.

[0043] The weighing funnel 2 and the metering device 1 can be installed simultaneously or separately on the upper belt conveyor 3 or the lower belt conveyor 4 to compare the weight of the material 6 sensed by the weighing sensor 27 and the metering device 1 respectively, thereby verifying the metering device 1.

[0044] Example 2

[0045] Based on Embodiment 1, this embodiment further specifies that the weighing funnel 2 includes an upper funnel 21, a middle funnel 22, and a lower funnel 23 connected in sequence; the weighing sensor 27 and the weighing weight 24 are both installed on the outer periphery of the middle funnel 22. The upper funnel 21 and the middle funnel 22 are connected by a flange 25, and a switch gate valve 28 is provided between the middle funnel 22 and the lower funnel 23. A support plate 26 is provided on the outer periphery of the middle funnel 22, and the support plate 26 is placed on the weighing sensor 27, and the weighing weight 24 is placed on the support plate 26 to facilitate the calibration of the weighing sensor 27 by the weighing weight 24.

[0046] Other belt conveyors may be installed between the upper belt conveyor 3 and the lower belt conveyor 4 to transfer materials 6.

[0047] The specific verification steps are as follows:

[0048] like Figures 4-7 As shown, the upper-level belt conveyor 3 and the lower-level belt conveyor 4 are respectively installed on different mounting platforms 5. The weighing funnel 2 is installed at the head of the upper-level belt conveyor 3, and the metering device 1 is installed on the lower-level belt conveyor 4. First, open the switch gate valve 28 to empty the residual material 6 inside the weighing funnel 2. Place a weighing weight 24 of known weight on the support plate 26. Compare the data displayed by the weighing sensor 27 with the known weight of the weighing weight 24 to verify the weighing funnel 2. After the weighing funnel 2 is verified, remove the weighing weight 24 from the support plate 26, close the switch gate valve 28, and start the upper-level belt conveyor 3. The material 6 is transferred from the upper-level belt conveyor 3 to the weighing funnel 2. After the minimum cumulative load requirement is met, stop the material 6 conveying and record the data displayed by the weighing sensor 27. Then start... Start the lower-level belt conveyor 4, open the switch gate valve 28, and the material 6 is unloaded from the weighing funnel 2 onto the lower-level belt conveyor 4. The material 6 is then transported by the lower-level belt conveyor 4 and passes through the metering device 1. After the material 6 in the weighing funnel 2 is emptied, stop the lower-level belt conveyor 4 and record the cumulative load displayed by the metering device 1. Compare the displayed cumulative load data with the data recorded by the weighing sensor 27 to determine whether the metering accuracy of the metering device 1 is within the allowable deviation range. If it does not meet the requirements, the metering device 1 needs to be calibrated. After calibration, the above steps can be repeated to check the metering device 1 until the metering accuracy requirements are met.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A weighing verification device, characterized in that: It includes a weighing funnel (2), and a weighing sensor (27) is provided on the outer periphery of the weighing funnel (2); a weighing weight (24) of known weight is placed on the weighing sensor (27) for calibrating the weighing sensor (27); the weighing sensor (27) senses the weight of the material (6) in the weighing funnel (2).

2. The weighing calibration device according to claim 1, characterized in that: Three load cells (27) are arranged along the outer periphery of the weighing funnel (2).

3. The weighing calibration device according to claim 2, characterized in that: The geometric center (29) formed by the three weighing sensors (27) coincides in the vertical direction with the center of gravity (7) formed by the weighing funnel (2) and the material (6).

4. The weighing verification device according to claim 1, characterized in that: The weighing funnel (2) includes an upper funnel (21), a middle funnel (22), and a lower funnel (23) connected in sequence; the weighing sensor (27) and the weighing weight (24) are both installed on the outer periphery of the middle funnel (22).

5. The weighing verification device according to claim 4, characterized in that: The upper funnel (21) and the middle funnel (22) are connected by a flange (25); a switch gate valve (28) is provided between the middle funnel (22) and the lower funnel (23).

6. The weighing verification device according to claim 4, characterized in that: A support plate (26) is provided on the outer periphery of the central funnel (22). The support plate (26) is placed on the weighing sensor (27), and the weighing weight (24) is placed on the support plate (26).

7. The weighing verification device according to claim 1, characterized in that: The weighing funnel (2) is located at the rear end of the upper belt conveyor (3) or the lower belt conveyor (4) along the conveying direction.

8. The weighing verification device according to claim 7, characterized in that: It also includes a meter (1) installed on the upper belt conveyor (3) or the lower belt conveyor (4) for sensing the weight of the material (6) on the belt conveyor.

9. The weighing verification device according to claim 8, characterized in that: The weighing funnel (2) and the meter (1) are respectively set on the upper belt conveyor (3) or the lower belt conveyor (4). The weight of the material (6) sensed by the weighing sensor (27) and the meter (1) are compared to verify the meter (1).

10. The weighing verification device according to claim 8, characterized in that: The weighing funnel (2) and the meter (1) are simultaneously set on the upper belt conveyor (3) or the lower belt conveyor (4) to compare the weight of the material (6) sensed by the weighing sensor (27) and the meter (1) respectively, thereby realizing the verification of the meter (1).

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