Electronic weighing device

Abstract

An electronic weighing device disclosed by the present invention comprises a belt conveyor, a speed sensor, a weighing sensor and a DCS system, the belt conveyor comprises a support member, a driving member and a conveying member, the support member is used for being supported on the ground, the driving member is connected to the support, and a conveying belt is movably connected to the support under the driving of the driving member; the speed sensor is connected to the support part and used for monitoring the conveying speed of the conveying part. The weighing sensor is connected to the support and used for sensing the instantaneous weight of materials passing through the weighing sensor. The DCS system is in communication connection with the speed sensor and the weighing sensor, and the weight of the material in one period is calculated according to the formula: weight = weight instantaneous value * period; the electronic weighing device sends in-situ measurement signals to the DCS system, data acquisition and operation are carried out in the DCS system, meanwhile, all-around data acquisition is carried out on the whole measurement and control process, and the intelligent degree is high.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic belt scales, and in particular relates to an electronic weighing device. Background Art

[0002] As early as the beginning of the 20th century, mechanical belt scales were tested and used abroad; they became popular abroad in the late 1940s; in the 1950s and 1960s, various types of electromechanical and electronic belt scales were developed and used; in the 1970s, not only new, high-density weighing sensors were developed and used, but also microprocessors were introduced into the weighing system, which further improved the measurement accuracy. In my country, belt scale technology started late, and roller-type mechanical belt scales were used in the 1950s; electronic belt scales were put into production in the 1960s; electronic belt scales developed rapidly in the late 1970s. During this period, different types of belt scales developed rapidly and their quality was continuously improved.

[0003] From the sensor perspective, the resistance strain type is a technology commonly used in foreign electronic belt scales for weighing sensors, and foil sheets are usually used. From the display instrument perspective, because the distance between it and the weighing sensor is very close, only tens to hundreds of meters, it is easy for the voltage and temperature to change due to the wire resistance, thereby causing the wire resistance to change, affecting the accuracy of weighing.

[0004] In terms of weighing frames, their structural forms can be divided into single-lever and double-lever, cantilever and suspension, etc. The single-lever weighing frame has only one set of weighing levers, and one or several sets of weighing rollers are placed on it. Its scale frame is only composed of simple fulcrums, levers, balance and other objects, and the accuracy is not very good; the double-lever weighing frame is composed of two sets of symmetrical weighing levers, each set of weighing levers is the same as the single-lever weighing frame, and a set or unit of weighing rollers is supported on it. However, compared with the single-lever weighing frame, its structure is more complicated and has a larger scale body, but the two sets of weighing levers can offset part of the horizontal sharpness during weighing, so the accuracy is higher.

[0005] In terms of inspection methods, three methods are usually used: hanging weights, roller chains and physical calibration. The accuracy of hanging weights is not very high, so it can usually only be used as an auxiliary verification method; roller chains are a verification method that is closer to physical calibration; physical calibration is also a commonly used verification method, but it requires special facilities when used, and the operability is not very good.

[0006] From the overall development trend at home and abroad, it can be seen that although electronic belt scales have been developed and applied for a long time, there are still many unfavorable factors. The basic framework has not changed much, which is also one of the reasons why electronic belt scales have not been able to develop significantly. Summary of the invention

[0007] The purpose of the present invention is to provide an electronic weighing device to solve the problems existing in the prior art, such as the low intelligence level of the existing electronic belt scale, the inability to intelligently monitor whether the material conveying condition is normal, the large size of the equipment, and the large space occupied. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: The present invention provides an electronic weighing device, which comprises: A belt conveyor, comprising a support member, a driving member and a conveying member, wherein the support member is used to be supported on the ground, the driving member is connected to the support member, and the conveying belt is movably connected to the support member under the drive of the driving member; A speed sensor connected to the support member and used for monitoring the conveying speed of the conveying member; A weighing sensor connected to the bracket for sensing the instantaneous weight of the material passing through the weighing sensor; The DCS system is connected to the speed sensor and the weighing sensor for calculating the weight of the material in one cycle using the formula: weight = instantaneous value of weight × cycle.

[0008] In some embodiments of the present application, protective vertical plates are further provided on the support member, and the vertical plates are respectively located on both sides of the conveying member to protect the materials on the conveying member.

[0009] In some embodiments of the present application, the conveying member is a conveying belt, and steering wheels are provided at both ends of the bracket, and both ends of the conveying belt are wound around the steering wheels.

[0010] In some embodiments of the present application, the driving member is connected to any one of the steering wheels for driving the steering wheel to rotate.

[0011] In some embodiments of the present application, the support member includes a loading end and a unloading end, and a unloading funnel is provided on the unloading end, and the unloading funnel forms a tapered discharge channel along the conveying direction of the material.

[0012] In some embodiments of the present application, the output end of the discharge channel is connected to a storage box.

[0013] In some embodiments of the present application, an alarm component is further included, which is communicatively connected to the speed sensor and the weighing sensor through the DCS system. When the speed or weight signal sensed by the speed sensor or the weighing sensor is not within a preset range, the speed sensor or the weighing sensor transmits an alarm signal to the DCS system, and the DCS system controls the alarm component to sound an alarm.

[0014] In some embodiments of the present application, the speed sensor is connected to the outer side of any of the protective vertical plates through a supporting frame, and a horizontal upper supporting beam is provided on the supporting frame. The end of the upper supporting beam is located above the conveying member, and the speed sensor is located on the upper supporting beam.

[0015] In some embodiments of the present application, a lower supporting beam is further provided on the supporting frame, the lower supporting beam penetrates the protective vertical plate and extends horizontally to the bottom of the conveying member, and the weighing sensor is arranged on the lower supporting beam.

[0016] In some embodiments of the present application, a system verification program is established in the DCS system, which can realize remote verification and data correction.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are: The electronic weighing device sends the local measurement signal to the DCS system, performs data collection and calculation inside the DCS system, and simultaneously performs all-round data collection and preset alarm monitoring on the entire measurement and control process to ensure that the system is in a healthy operating state. When an abnormality is found, an alarm is issued in time to prompt relevant personnel to conduct inspections and maintenance, and trigger interlocking protection actions when necessary to ensure the safety of on-site equipment and personnel.

[0018] The DCS system establishes a big data analysis system to analyze data on whether material feeding is blocked or not, whether the belt feeder is operating normally, whether the grinding force is reasonable, and whether the entire grinding system is operating in the optimal state, ensuring that the entire grinding system is in an efficient, stable and safe operating state.

[0019] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is one of the structural schematic diagrams of an embodiment of the electronic weighing device proposed by the present invention; Figure 2 This is a second structural schematic diagram of an embodiment of the electronic weighing device proposed by the present invention; Figure 3 This is a third structural schematic diagram of an embodiment of the electronic weighing device proposed by the present invention; In the figure, 10. Bracket parts; 11. Steering wheel; 12. Protective vertical plate; 20. Driving parts; 30. Conveying parts; 40. Speed ​​sensor; 50. Weighing sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] In the existing weighing structure measurement method such as weighing belt scales, all signals are measured and calculated on-site, which has the following hidden dangers and problems: there is no relevant historical data and real-time trend to query for all data, and only the final calculation results can be recorded and queried in the DCS system, resulting in a large amount of manpower and material resources consumed in data analysis and fault handling, long maintenance cycle, and great difficulty in maintenance.

[0029] The entire device architecture is too complex, resulting in many fault points and a large amount of operation and maintenance work. Due to the harsh on-site environment, the device has a high failure rate and a short service life, requiring a lot of manpower and material resources to ensure normal operation.

[0030] refer to Figure 1-Figure 3 In order to solve the above problems, the present application proposes an electronic weighing device, which includes a belt conveyor, a speed sensor 40 and a load-bearing sensor.

[0031] The belt conveyor includes a support member 10 , a driving member 20 and a conveying member 30 . The support member 10 is used to be supported on the ground. The driving member 20 is connected to the support. The conveying belt is movably connected to the support under the drive of the driving member 20 .

[0032] The speed sensor 40 is connected to the support member 10 to monitor the conveying speed of the conveying member 30 ; the weighing sensor 50 is connected to the support member 10 to sense the instantaneous weight of the material passing through the weighing sensor 50 .

[0033] The DCS system is in communication with the speed sensor 40 and the weighing sensor 50 and calculates the weight of the material in one cycle using the formula: weight = instantaneous value of weight x cycle.

[0034] In order to prevent the material from falling off the conveying member 30 , protective vertical plates 12 are respectively provided on both sides of the conveying member 30 along the conveying direction of the conveying member 30 for protecting the material on the conveying member 30 .

[0035] The speed sensor is connected to the outside of any protective vertical plate 12 through a supporting frame, and a horizontal upper supporting beam is arranged on the supporting frame. The end of the upper supporting beam is located above the conveying member, and the speed sensor 40 is located on the upper supporting beam.

[0036] A lower supporting crossbeam is also provided on the supporting frame. The lower supporting crossbeam penetrates the protective vertical plate 12 and extends horizontally to the bottom of the conveying member. The weighing sensor 50 is provided on the lower supporting crossbeam.

[0037] The conveying member 30 is a conveying belt. Steering wheels 11 are provided at both ends of the bracket. Both ends of the conveying belt pass through the steering wheels 11 .

[0038] The driving member 20 is connected to any steering wheel 11 and is used to drive the steering wheel 11 to rotate.

[0039] After the driving member 20 is turned on, it drives the steering wheel 11 to rotate, and the steering wheel 11 drives the conveying belt to move, and drives the material placed on the conveying belt to move.

[0040] The support member 10 comprises a feeding end and a discharging end. A discharging hopper is arranged on the discharging end. The discharging hopper forms a gradually contracting discharging channel along the conveying direction of the material.

[0041] The output end of the discharge channel is connected to the storage box. After the material is transported from the conveyor belt to the unloading end, it is transported from the discharge channel to the storage box.

[0042] It also includes an alarm component, which is connected to the speed sensor 40 and the weighing sensor 50 through the DCS system. When the speed or weight signal sensed by the speed sensor or the weighing sensor is not within a preset range, the speed sensor or the weighing sensor transmits an alarm signal to the DCS system, and the DCS system controls the alarm component to sound an alarm.

[0043] The alarm can promptly sound an alarm when an abnormality occurs, prompting relevant personnel to conduct inspections and maintenance, and trigger chain protection actions when necessary to ensure the safety of on-site equipment and personnel.

[0044] After the electronic weighing device was put into operation, the integrator system was cancelled on site, the working process was more stable, all data was collected and calculated in the DCS system, the architecture was simpler, failures caused by external adverse factors were reduced, and the operation stability of the belt scale was improved.

[0045] The DCS system establishes a data analysis system to analyze whether the material feeding is blocked or not, whether the belt feeder is operating normally, whether the grinding force is reasonable, and whether the whole grinding system is operating in the optimal state, so as to ensure that the whole grinding system is in an efficient, stable and safe operating state.

[0046] Relying on the powerful computing power and simple configuration environment of DCS, the data is processed to obtain the most realistic belt scale data, and then the belt motor operating frequency is controlled according to the working conditions; a complete system verification program is established within the DCS system to realize remote verification and data correction.

[0047] Relying on the DCS system, the entire measurement and control process is fully monitored with data collection and preset alarms to ensure that the system is in a healthy operating state. When an abnormality is found, an alarm is issued in time to prompt relevant personnel to conduct inspections and maintenance. When necessary, interlocking protection actions are triggered to ensure the safety of on-site equipment and personnel.

[0048] Relying on the DCS system, through the collection of data, a big data analysis system is established to analyze whether the material discharge is blocked or not, whether the belt feeder is operating normally, whether the grinding force is reasonable, and whether the whole grinding system is operating in the optimal state, so as to ensure that the whole grinding system is in an efficient, stable and safe operating state.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An electronic weighing device, characterized in that: include: A belt conveyor, comprising a support member, a driving member and a conveying member, wherein the support member is used to be supported on the ground, the driving member is connected to the support member, and the conveying belt is movably connected to the support member under the drive of the driving member; A speed sensor connected to the support member and used for monitoring the conveying speed of the conveying member; A weighing sensor connected to the bracket for sensing the instantaneous weight of the material passing through the weighing sensor; The DCS system is connected to the speed sensor and the weighing sensor for calculating the weight of the material in one cycle using the formula: weight = instantaneous value of weight × cycle.

2. The electronic weighing device according to claim 1, characterized in that: The support member is also provided with protective vertical plates, which are respectively located on both sides of the conveying member and are used to protect the materials on the conveying member.

3. The electronic weighing device according to claim 1, characterized in that: The conveying member is a conveying belt, and steering wheels are arranged at both ends of the bracket, and both ends of the conveying belt are wound around the steering wheels.

4. The electronic weighing device according to claim 1, characterized in that: The driving member is connected to any one of the steering wheels and is used to drive the steering wheel to rotate.

5. The electronic weighing device according to claim 1, characterized in that: The support member comprises a feeding end and a discharging end, and a discharging funnel is arranged on the discharging end, and a gradually contracting discharging channel is formed in the discharging funnel along the conveying direction of the material.

6. The electronic weighing device according to claim 1, characterized in that: The output end of the discharge channel is connected to the material storage box.

7. The electronic weighing device according to claim 1, characterized in that: It also includes an alarm component, which is connected to the speed sensor and the weighing sensor through the DCS system. When the speed or weight signal sensed by the speed sensor or the weighing sensor is not within a preset range, the speed sensor or the weighing sensor transmits an alarm signal to the DCS system, and the DCS system controls the alarm component to sound an alarm.

8. The electronic weighing device according to claim 2, characterized in that: The speed sensor is connected to the outer side of any of the protective vertical plates through a supporting frame, and a horizontal upper supporting beam is provided on the supporting frame. The end of the upper supporting beam is located above the conveying member, and the speed sensor is located on the upper supporting beam.

9. The electronic weighing device according to claim 8, characterized in that: The support frame is also provided with a lower support beam, which passes through the protective vertical plate and extends horizontally to the bottom of the conveying member, and the weighing sensor is arranged on the lower support beam.

10. The electronic weighing device according to claim 1, characterized in that: A system verification program is established in the DCS system, which can realize remote verification and data correction.

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