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Manufacturing method of weighing and mixing system for lime production


source:[Gravimetric blender]   release time:2021-03-19 11:57:42





Manufacturing method of weighing and mixing system for lime production
The utility model discloses a weighing and mixing system for lime production, which belongs to lime production equipment [technical field]. The weighing and mixing system includes a bluestone silo and a coke silo. A vibrating feeder is installed on the bluestone silo and the coke silo. A weighing device is provided under the vibrating feeder, and an intermediate hopper is provided under the weighing device. , A mixing belt is arranged under the middle hopper of bluestone, and a coke belt is arranged under the middle hopper of coke. The coke belt is located above the mixing belt, and the near ends of the coke belt and the mixing belt partially overlap in the up and down direction, The said vibrating feeder adopts PLC control. The device has a simple structure and is easy to implement, and can be used in the production of lime to increase the accuracy of weighing and improve the quality of the mixture.
[Patent Description] Lime Production Weighing and Mixing System
【Technical Field】
[0001] This utility model relates to a weighing and mixing system, in particular to a weighing and mixing system for lime production, and belongs to lime production equipment [technical field].
【Background technique】
[0002] In the production of active lime shaft kiln, limestone and coke need to be mixed. In order to calcinate limestone to produce high-quality active lime, the quality ratio of the two raw materials is very important. In addition, for limestone, the content of CaO is different and the particle size is different (40-80mm); for the different combustion value of coke and the particle size (20-40mm), it is necessary to adjust the weight ratio of the two raw materials. So in the automated production process. It is very important to be able to adjust the mass ratio of bluestone to coke conveniently, quickly, and accurately in time. At present, the weight of ingredients is mostly used by manual observation. The quality of weighing ingredients is greatly affected by human factors, and it is prone to errors, and it cannot be based on the heat of coke. Adjust the proportion of ingredients in time for the characteristics of value, particle size, etc. During the mixing process, the distance between the blanking part and the belt is too large, and the belt and the belt conveyor are likely to be damaged during the blanking.

[Summary of the invention]

[0003] The purpose of the utility model is to overcome the shortcomings of the existing weighing and mixing system and to provide a weighing and mixing system for lime production.
[0004] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: a lime production weighing and mixing system, including a bluestone silo, a coke silo, and a vibration on the bluestone silo and coke silo Feeder, a weighing device is arranged under the vibrating feeder, an intermediate hopper is arranged under the weighing device, a mixing belt is arranged under the intermediate hopper of bluestone, and a coke belt is arranged under the intermediate hopper of coke. The belt is located above the mixing belt. The coke belt and the proximal end of the mixing belt partially overlap in the up and down direction. The vibrating feeder adopts PLC control, and the vibrating feeder is equipped with a frequency conversion control device. The distance between the bluestone intermediate hopper and the mixing belt is less than 1.2m, the distance between the coke intermediate hopper and the coke belt is less than 1.2m, and the vertical distance between the coke belt and the mixing belt is less than 1m.
[0005] The beneficial technical effect of the lime production weighing and mixing system provided by the utility model is: the frequency conversion vibration feeder is used to feed the weighing device, and the vibration can be adjusted in time according to the weighing data of the weighing device. Feeding speed or start-stop vibrating feeder, set up an industrial computer in the system, you can conveniently adjust the batching ratio in time according to the specific characteristics of coke, through the PLC control vibrating feed, two belt conveyors are set up and down to ensure coke and bluestone The mixing is uniform, and the distance between the middle hopper and the belt and the two belt conveyors is reasonably set to ensure that the material has a small impact on the belt conveyor during the blanking process and prolong the service life of the belt and the belt conveyor. The device has a simple structure and is easy to implement , It can improve the accuracy of weighing and improve the quality of the mixture when applied to the weighing mixture in the production of lime, laying a good foundation for the production of high-quality lime.
DETAILED DESCRIPTION [0008] In order to better understand and implement the technical solution of the present utility model, some embodiments of the present utility model are provided here. These implementation examples are for better explaining the technical solution of the present utility model. It does not constitute any form limitation to the utility model.
[0009] The lime production weighing and mixing system includes a bluestone silo and a coke silo. A vibrating feeder is provided on the bluestone silo and the coke silo, and a weighing device is provided under the vibrating feeder. An intermediate hopper is arranged below, a mixing belt is arranged under the intermediate hopper of bluestone, and a coke belt is arranged under the intermediate hopper of coke. The coke belt is located above the mixing belt, and the near ends of the coke belt and the mixing belt are at The upper and lower directions partially overlap. The vibrating feeder adopts PLC control, the vibrating feeder is equipped with a frequency conversion control device, and the distance between the bluestone intermediate hopper and the mixing belt is small.
1.2m, the distance between the intermediate hopper of the coke and the coke belt is less than 1.2m, and the vertical distance between the coke belt and the mixing belt is less than 1m. More specific implementations are shown in the drawings, and the symbols in the drawings are as follows: 1-1: vibrating feeder a, 1-2: vibrating feeder b; 2-1: bluestone weighing system; 2-2: Coke weighing system; 3: PLC; 4: mixing belt; 5: coke belt; 6: feed truck; 7: weighing hopper combination; 8: bracket; 9: weighing sensor; 10: pneumatic Device; 11: middle hopper bracket, lime production weighing and mixing system, including bluestone silo, coke silo, vibrating feeder is set on the bluestone silo and coke silo, 1-1 is set up on the bluestone silo Vibrating feeder a, a bluestone weighing device is installed under the vibrating feeder a, 2-1 is a bluestone weighing system, the bluestone weighing device is set in the weighing system, and an intermediate hopper is set under the bluestone weighing device, Figure 2 shows the bracket of the middle hopper 11, which is set on the middle hopper bracket, and the mixing belt 4 is set under the middle hopper of the bluestone weighing system 2-1, and 1-2 is shown on the coke silo The vibrating feeder bl-2 is installed, the bluestone weighing device is installed under the vibrating feeder a, 2-2 is the coke weighing system, the coke weighing system is the same as the bluestone weighing system, in the middle of the coke weighing system An intermediate hopper is arranged on the hopper support, and a coke belt 5 is arranged under the intermediate hopper of coke. The coke belt 5 is located above the mixing belt 4, and the proximal end of the coke belt 5 and the mixing belt 4 partially overlap in the up and down direction, The vibrating feeder adopts PLC control, the vibrating feeder is equipped with a frequency conversion control device, the distance between the bluestone intermediate hopper and the mixing belt is smaller than 1.2m, and the coke intermediate hopper to the coke belt The distance is less than 1.2m, and the vertical distance between the coke belt and the mixing belt is less than 1m. The working process of the utility model is to operate in the industrial control room, according to the set quality value, start the vibrating feeder first, and the material (bluestone or coke) falling from the silo enters the weighing hopper. When the weight of the raw material reaches the set weight value. Through the industrial control system, immediately give an instruction to the vibrating feeder to stop vibrating feeding. After receiving the charging instruction of the feeder, the lower ports of the two weighing hoppers activate the pneumatic device 10 respectively. The pneumatic device cylinder and gate used in the utility model are opened in sequence, and fall to the mixing belt and the coke belt through the middle bucket. The coke on the belt will be evenly scattered on the bluestone belt that is being transported, head-to-head and tail-to-tail. The mixed material will be sent to the feeder 6 through the mixing belt, and the trolley will be filled with a bucket. It can complete a mixing action. General weighing time <60 seconds, general mixing time <50 seconds. When the weight of coke or bluestone needs to be adjusted, the program developed by the microcomputer in the industrial control system will automatically adjust the speed of the frequency conversion feeder during the weighing process. Before the weighing value is 90% of the set value (including the last error and advance), the feeder vibrates at the set fast vibration speed. After reaching 90%, it vibrates slowly until it stops at 100%. Realize automatic and accurate weighing of limestone and coke, automatic error compensation between each batch, over-tolerance alarm and automatic correction of compensation, automatic zero tracking, because the space caused by the height difference is not lost after each feeding is terminated The uncertainty of the finished material, the particle size of the material, the inertia of the vibrating machine, etc. are the direct reasons for the inaccuracy of the final weighing accuracy. If you can accurately estimate the amount of space material at the time of stopping the feeding, the inertia of the vibrating machine, etc. Stopping the feeding can ensure that the final weighing result is within the given range. According to the characteristics of repeated weighing of materials in the system and the error of the last weighing, the next future space material quantity is estimated as the set value. Advance amount, the current weighing value reflected by the electronic scale=set amount—advance amount" [0010] After the various specific embodiments of the present invention are described in detail above, those of ordinary skill in the art should clearly understand that, According to various common knowledge in the field, various equivalent changes, equivalent substitutions or simple modifications can be made according to the ideas of the present invention, which should all belong to the scope of the technical solution of the present invention.
【Rights request】
1. Lime production weighing and mixing system, including bluestone silo and coke silo. Vibrating feeders are installed on the bluestone silo and coke silo, and weighing devices are installed under the vibrating feeders. An intermediate hopper is provided, which is characterized in that: a mixing belt is arranged under the intermediate hopper of bluestone, and a coke belt is arranged under the intermediate hopper of coke. The coke belt is located above the mixing belt. The proximal end partially overlaps in the up and down direction, and the vibrating feeder is controlled by PLC.
2. The lime production weighing and mixing system according to claim 1, wherein the vibrating feeder is provided with a frequency conversion control device.
3. The lime production weighing and mixing system according to claim 1, wherein the distance between the bluestone intermediate hopper and the mixing belt is less than 1.2m, and the distance between the coke intermediate hopper and the coke belt is less than 1.2m. m, the vertical distance between the coke belt and the mixing belt is less than lm.[Gravimetric blender]