There are many packaging weighers manufacturers of the same type in the country. From the point of view of the principle and structure of the packaging weighers, they are basically the same, with little difference. The packaging weighers are composed of mechanical devices and intelligent computer control. Both can complete the fast and slow feeding and quantification. Weighing, bagging loose bags, seam transportation and other processes. Mechanical devices include feeding mechanisms, mechanical weighing bodies (including hoppers, transition buckets and bag holders), clamp loose bag mechanisms, sewing bags and lifting mechanisms, belt conveyor equipment, pneumatic components, etc.; computer intelligent control parts include load sensors, Electric annoying smart weighing instrument and PLC program controller.
In addition to manual bagging, packaging scales generally have the following functions: Fast, slow feeding and dosing, bagging and unloading are all controlled by the PL program. Some of the packaging scales are directly controlled by computer intelligence weighing instrument programming procedures, except for opening, closing and indicating. Outside the lamp, electrical components such as relays have been minimized. Self-falling packing scales do not contain relay elements, ensuring absolutely reliable operation. Electric annoying smart weighing instrument can realize the setting of parameters such as fast and slow feeding amount, overshoot and overload alarm display, and can be equipped with printout; some computer intelligent controller has weight or number of packages accumulated, and it can communicate with host computer through RS232 port. Network communication and other functions; some packaging scale display panel equipped with electronic counters to record the number of packages, to avoid the loss of the number of packets lost data. Packing scales are irritated by intelligent weighing control instruments. Some packaging scale manufacturers adopt imported ones, and some of them use home-made ones. Regardless of whether it is imported or domestic, its A-D conversion accuracy and the control reliability of its programming have reached a considerable height. Weighing control instruments and PLC program controllers, especially PLC program controllers, are generally imported. They are highly reliable and have little impact on the accuracy of weighing on the weighing scales. We do not discuss them too much here.
The influence of the feeding mode on the weighing accuracy of the packing scale is mainly related to the feeding mode of the packing scale. The correct selection of the feeding mode of the packing scale can ensure that the quality of the material is not affected during the feeding and conveying process, and can also It ensures the fast and slow feeding of packing scales is stable and reliable, which helps to improve the weighing accuracy. Grain and feed production companies choose packaging scales, according to their own products belong to what type, with what kind of physical properties, such as packaging material shape, size, bulk density, surface friction coefficient, fluidity and adhesion and so on. What kind of packing scale should be used for packing materials? Any kind of packaging scale cannot be adapted to the weighing and packaging of multiple materials with different physical properties, that is to say, the packaging scale has poor adaptability to the materials. For example, the special advantage of the packing scale for belt feeding is that the feeding will not cause the material to be broken and automatically classified, and it will not affect the product quality. Therefore, the packaging scale is most suitable for weighing and packaging of pellets, expanded pellets, expanded sheets and cakes. The packaging scale also has deficiencies, namely poor sealing performance. Although the full-price powdered feed can also weigh the packaging, the effect is inferior to pelleted feed. The good flowability of bean granules, containing stone powder as a carrier of premix, slightly sticky squid, shrimp, crab and other special feed, the belt feeding of the packaging scales should not be used. Grainy rice, rice, wheat, beans and other granular materials with good fluidity can be self-dropping feed packing scales. Stone powder or attapulgite clay as the carrier, a good fluidity of the premix can be auger feed packaging scales, and requires the use of exporter than the import of the oblique auger feed, to prevent the material when the auger stall Outflow from the auger blades affects weighing or polluting the environment. Fine agglutinated fine-grained squid, shrimp, crab feed and additives, etc. can be used auger feed packaging scales. The significant feature of the auger feeding package scale is its good sealing performance and its low risk of dust leakage.
According to the above selection of a suitable feeding method to meet the required process requirements, the packing scale feed quickly and smoothly, the accuracy of the symmetry does not have much impact on the accuracy of the packaging scale, the main factor of the packing scale into The effect of material methods on accuracy has been discussed in more detail. In addition to the feeding method, other parts of the packaging scale differ greatly depending on the occasion, industry, weighing range, and accuracy requirements. Other parts of different types of packaging scales also have its specificity, and have their own unique structure to suit certain specific occasions and requirements. The main considerations in the design of other parts of the packaging scale are the physical properties of the packaging materials to be weighed, including the particle size, bulk density, looseness, fluidity, hygroscopicity, and adhesiveness of the materials. The different properties of the weighed packaging material determine the diversity of the other parts of the packaging scale. In order to adapt to the diversity of materials, other parts of the packaging scale have a variety of structural forms, divided into multiple types.
Different types of packaging scales not only have different types of feeding methods, but other parts have different structural forms. Some packaging scales include hoppers, transition hoppers, and bagging buckets; some packaging weighers only have a bag hopper and no hoppers and transition hoppers; some have a cutting device at the infeed outlet; some have a packaging weigher Axle feeding shaft end equipped with cutting doors; some do not need packaging bags, only from the measurement of the middle of the measurement scale does not contain a bag bucket and so on. The existing packaging scales have poor adaptability to packaging materials. The main difference is that the physical properties of the weighed packaging materials are too different. The scattered and good flowability of the granular materials is very different from the powdery materials with poor flowability and poor flowability. The same granular material, the size of the same size, does not contain residual sticky debris, crushed particles, and powdered materials, which are different from the easily adhered fragments, crushed particles, and powdery materials that are produced due to crushing. The finely-dispersed and highly-flowing granular materials, such as plastic particles, wheat, corn and rice, are suitable for packing scales containing hoppers, transition hoppers, and clip buckets; but they contain granule feeds of crushed pieces, crushed granules, and powdery materials. Differently, these debris, granules, and powdered materials are sticky and will adhere to weigh buckets, transition hoppers, and hopper buckets, affecting the weighing accuracy, and are not suitable for hoppers, transition hoppers, and hoppers. Folder bag weighing scales. In order to reduce the adhesion of the material to the hopper wall, a hopper-free hopper scale is used in which the weigh bucket is used as a hopper without a hopper and an intermediate bucket, and only a bag holder is used to weigh the packaging bag sandwiched on the bag holder. The same powder material, due to the presence of hygroscopicity, adhesion of the difference, the degree of adhesion to the hopper, transition bucket and clip bucket is not the same, the impact of the accuracy of the weighing scale is not the same.
The physical properties of the packaging materials, especially the moisture absorption and adhesion of the materials, have changed slightly, and the weighing accuracy of the packaging scales has been greatly affected, resulting in large deviations in the accuracy of weighing and even the inability to use them. This shows that the stickiness of packaging materials is the main factor affecting the weighing accuracy of the packing scale.
In addition to manual bagging, packaging scales generally have the following functions: Fast, slow feeding and dosing, bagging and unloading are all controlled by the PL program. Some of the packaging scales are directly controlled by computer intelligence weighing instrument programming procedures, except for opening, closing and indicating. Outside the lamp, electrical components such as relays have been minimized. Self-falling packing scales do not contain relay elements, ensuring absolutely reliable operation. Electric annoying smart weighing instrument can realize the setting of parameters such as fast and slow feeding amount, overshoot and overload alarm display, and can be equipped with printout; some computer intelligent controller has weight or number of packages accumulated, and it can communicate with host computer through RS232 port. Network communication and other functions; some packaging scale display panel equipped with electronic counters to record the number of packages, to avoid the loss of the number of packets lost data. Packing scales are irritated by intelligent weighing control instruments. Some packaging scale manufacturers adopt imported ones, and some of them use home-made ones. Regardless of whether it is imported or domestic, its A-D conversion accuracy and the control reliability of its programming have reached a considerable height. Weighing control instruments and PLC program controllers, especially PLC program controllers, are generally imported. They are highly reliable and have little impact on the accuracy of weighing on the weighing scales. We do not discuss them too much here.
The influence of the feeding mode on the weighing accuracy of the packing scale is mainly related to the feeding mode of the packing scale. The correct selection of the feeding mode of the packing scale can ensure that the quality of the material is not affected during the feeding and conveying process, and can also It ensures the fast and slow feeding of packing scales is stable and reliable, which helps to improve the weighing accuracy. Grain and feed production companies choose packaging scales, according to their own products belong to what type, with what kind of physical properties, such as packaging material shape, size, bulk density, surface friction coefficient, fluidity and adhesion and so on. What kind of packing scale should be used for packing materials? Any kind of packaging scale cannot be adapted to the weighing and packaging of multiple materials with different physical properties, that is to say, the packaging scale has poor adaptability to the materials. For example, the special advantage of the packing scale for belt feeding is that the feeding will not cause the material to be broken and automatically classified, and it will not affect the product quality. Therefore, the packaging scale is most suitable for weighing and packaging of pellets, expanded pellets, expanded sheets and cakes. The packaging scale also has deficiencies, namely poor sealing performance. Although the full-price powdered feed can also weigh the packaging, the effect is inferior to pelleted feed. The good flowability of bean granules, containing stone powder as a carrier of premix, slightly sticky squid, shrimp, crab and other special feed, the belt feeding of the packaging scales should not be used. Grainy rice, rice, wheat, beans and other granular materials with good fluidity can be self-dropping feed packing scales. Stone powder or attapulgite clay as the carrier, a good fluidity of the premix can be auger feed packaging scales, and requires the use of exporter than the import of the oblique auger feed, to prevent the material when the auger stall Outflow from the auger blades affects weighing or polluting the environment. Fine agglutinated fine-grained squid, shrimp, crab feed and additives, etc. can be used auger feed packaging scales. The significant feature of the auger feeding package scale is its good sealing performance and its low risk of dust leakage.
According to the above selection of a suitable feeding method to meet the required process requirements, the packing scale feed quickly and smoothly, the accuracy of the symmetry does not have much impact on the accuracy of the packaging scale, the main factor of the packing scale into The effect of material methods on accuracy has been discussed in more detail. In addition to the feeding method, other parts of the packaging scale differ greatly depending on the occasion, industry, weighing range, and accuracy requirements. Other parts of different types of packaging scales also have its specificity, and have their own unique structure to suit certain specific occasions and requirements. The main considerations in the design of other parts of the packaging scale are the physical properties of the packaging materials to be weighed, including the particle size, bulk density, looseness, fluidity, hygroscopicity, and adhesiveness of the materials. The different properties of the weighed packaging material determine the diversity of the other parts of the packaging scale. In order to adapt to the diversity of materials, other parts of the packaging scale have a variety of structural forms, divided into multiple types.
Different types of packaging scales not only have different types of feeding methods, but other parts have different structural forms. Some packaging scales include hoppers, transition hoppers, and bagging buckets; some packaging weighers only have a bag hopper and no hoppers and transition hoppers; some have a cutting device at the infeed outlet; some have a packaging weigher Axle feeding shaft end equipped with cutting doors; some do not need packaging bags, only from the measurement of the middle of the measurement scale does not contain a bag bucket and so on. The existing packaging scales have poor adaptability to packaging materials. The main difference is that the physical properties of the weighed packaging materials are too different. The scattered and good flowability of the granular materials is very different from the powdery materials with poor flowability and poor flowability. The same granular material, the size of the same size, does not contain residual sticky debris, crushed particles, and powdered materials, which are different from the easily adhered fragments, crushed particles, and powdery materials that are produced due to crushing. The finely-dispersed and highly-flowing granular materials, such as plastic particles, wheat, corn and rice, are suitable for packing scales containing hoppers, transition hoppers, and clip buckets; but they contain granule feeds of crushed pieces, crushed granules, and powdery materials. Differently, these debris, granules, and powdered materials are sticky and will adhere to weigh buckets, transition hoppers, and hopper buckets, affecting the weighing accuracy, and are not suitable for hoppers, transition hoppers, and hoppers. Folder bag weighing scales. In order to reduce the adhesion of the material to the hopper wall, a hopper-free hopper scale is used in which the weigh bucket is used as a hopper without a hopper and an intermediate bucket, and only a bag holder is used to weigh the packaging bag sandwiched on the bag holder. The same powder material, due to the presence of hygroscopicity, adhesion of the difference, the degree of adhesion to the hopper, transition bucket and clip bucket is not the same, the impact of the accuracy of the weighing scale is not the same.
The physical properties of the packaging materials, especially the moisture absorption and adhesion of the materials, have changed slightly, and the weighing accuracy of the packaging scales has been greatly affected, resulting in large deviations in the accuracy of weighing and even the inability to use them. This shows that the stickiness of packaging materials is the main factor affecting the weighing accuracy of the packing scale.
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