Continuous weighing metering feeder and measurement method for flow speed of feeder

A technology of metering feeding and weight, which is applied in the field of feeding machines, can solve the problems of low feeding speed control accuracy, actual material output error, and residual feeding machines, etc., to achieve easy networking and easy Easy maintenance and wiring

Active Publication Date: 2019-10-15
南京恒高挤出装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the loss-in-weight continuous weighing and metering feeding system in the prior art, the weighing sensor is installed at the bottom of the weighing hopper to detect the weight change of the material in the weighing hopper, but in actual use, when the material enters the feeder , the material cannot be completely output from the feeder, because there may be residues in the feeder, so the weight detected by the load cell is not completely output from the feeder, so the material detected by the load cell There is a certain error between the output volume and the actual material output volume, which leads to the low precision of the feeding machine in the control of the feeding speed

Method used

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  • Continuous weighing metering feeder and measurement method for flow speed of feeder
  • Continuous weighing metering feeder and measurement method for flow speed of feeder
  • Continuous weighing metering feeder and measurement method for flow speed of feeder

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Effect test

Embodiment 1

[0046] refer to figure 1 , is a kind of continuous weighing and metering feeding machine disclosed by the present invention, comprising several conveying units, each conveying unit comprising a base 1, a screw conveyor 21 is arranged on the base 1, and a feeding material is provided on the top of the screw conveyor 21 The bucket 22 is provided with an auger for conveying materials in the bolt conveyor, and the screw conveyor 21 is provided with a motor 211 for driving the auger to rotate. During operation, the motor 211 drives the auger to rotate, and the raw material in the feed hopper 22 is conveyed Going out, there is a storage hopper 3 above the feed hopper 22, the storage hopper 3 is fixed independently, without any connection with the feed hopper 22, the raw materials to be processed are stored in the storage hopper 3, and an opening is provided at the bottom of the storage hopper 3, The opening is set toward the feed hopper 22, and a feeding valve 31 that controls the o...

Embodiment 2

[0056] A continuous weighing and metering feeder, the difference from Embodiment 1 is that in this embodiment, refer to figure 1 as well as image 3 , the bottom of the screw conveyor 21 is provided with a base plate 2, the base plate 2 abuts against the load cell 4, the load cell 4 is fixed on the base 1 and is set corresponding to the center of the base plate 2, and the four corners of the base plate 2 are fixed with guide rods 5 perpendicular to the base plate 2 , the length of the guide rod 5 can be stretched, and the base 1 is fixed with a guide sleeve 6 sleeved outside the guide rod 5. Due to the limit of the guide rod 5 and the guide sleeve 6, the bottom plate 2 can only move along the vertical direction when it is vibrated. Sliding in the same direction can ensure that the load cell 4 is always at the center of the bottom plate 2, thereby ensuring the detection accuracy of the load cell 4, and because the guide rod 5 and the guide sleeve 6 are set in the vertical direc...

Embodiment 3

[0066] A method for measuring the flow rate of a feeder, comprising step S1, the load cell 4 records T 1 Sec weight W 1 , W 1 The unit is kg, after the load cell 4 detects, the W 1 The value is sent to the PLC.

[0067] Then enter step S2, when the time reaches T 2 Seconds later, the load cell 4 measures the weight as W 2 , W 2 The unit is also kg, then the weight sensor will W 2 The value is sent to the PLC;

[0068] When W 1 with W 2 After the value of the value is passed into the PLC, enter step S3, the program in the PLC will be based on T 2 —T 1 The weight change over the time period, that is, W 1 with W 2 The difference of the current feeder material output flow rate can be obtained, and the real-time flow rate is (W 1 -W 2 ) / (T 2 -T 1 ) × 3600 kg / h, using the weight lost within a certain period of time to calculate the flow rate, real-time and continuous detection of the flow rate can be realized, and the control accuracy of the PLC to the motor 211 of t...

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Abstract

The invention relates to a continuous weighing metering feeder. The continuous weighing metering feeder comprises multiple conveying units, each conveying unit comprises a base, and a spiral conveyoris arranged on each base and comprises a feeding hopper and a storage hopper arranged above the feeding hopper; a weighing sensor is connected between each spiral conveyor and the corresponding base,and the feeder further comprises controllers connected with the weighing sensors; motors of the spiral conveyors are connected with the controllers, and supplement valves are arranged at the bottoms of the storage hoppers, connected with the controllers and driven by the controllers to move. By adopting an Ethernet communication technology, wiring is simple, the data transmission speed is high, the data transmission distance is long, the real-time capability and anti-interference capacity are high, the system work is stable, and networking and maintenance are easily conducted. The system can be well controlled in real time, data can be well displayed in real time, important data required by a user is stored, convenience is provided for maintenance of the user, and by using Ethernet communication and advantages of an existing network, the service is provided for the user in time. The feeder is integrated with the industry 4.0.

Description

technical field [0001] The invention relates to the technical field of feeders, in particular to a continuous weighing and metering feeder and a method for measuring the flow rate of the feeder. Background technique [0002] In the production of polymer materials and the research and development of new polymer materials, various materials with different ratios are accurately and continuously fed into the extrusion unit, which is very important for the production of high-quality polymer materials or the development of new polymer materials. success or failure plays a pivotal role. [0003] The invention patent with publication number CN106926428A provides a loss-in-weight continuous weighing and metering feeding system, which can meet various weighing and metering feeders in different material states and ensure the continuity of feeding. [0004] In the loss-in-weight continuous weighing and metering feeding system in the prior art, the weighing sensor is installed at the bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G65/00G01P3/64
CPCB65G65/005G01P3/64
Inventor 孔繁泉
Owner 南京恒高挤出装备有限公司
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