CN202814527U - Small-range hopper scale special for trace batching - Google Patents

Small-range hopper scale special for trace batching Download PDF

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Publication number
CN202814527U
CN202814527U CN 201220264909 CN201220264909U CN202814527U CN 202814527 U CN202814527 U CN 202814527U CN 201220264909 CN201220264909 CN 201220264909 CN 201220264909 U CN201220264909 U CN 201220264909U CN 202814527 U CN202814527 U CN 202814527U
Authority
CN
China
Prior art keywords
small
range
trace
batching
frequency converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220264909
Other languages
Chinese (zh)
Inventor
查长清
贺荣
胡怀志
贺毅然
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MOUNTAINPEAK TECHNOLOGY Co Ltd
Original Assignee
MOUNTAINPEAK TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MOUNTAINPEAK TECHNOLOGY Co Ltd filed Critical MOUNTAINPEAK TECHNOLOGY Co Ltd
Priority to CN 201220264909 priority Critical patent/CN202814527U/en
Application granted granted Critical
Publication of CN202814527U publication Critical patent/CN202814527U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A small-range hopper scale special for trace batching relates to an improvement in the hopper scale structure of the trace batching system which is commonly used in the industrial automation. The utility model provides the small-range hopper scale special for trace batching, which is accurate in flow control, small in control deviation, low in raw material consumption, and long-term stable in products. The small-range hopper scale comprises a PLC main controller and a drive frequency converter, and is characterized in that the PLC main controller outputs a group of control signals proportional to the spiral rotation speed of a feeding screw by detecting the weight of a weight bin, and the control signals drive the frequency converter to adjust the feeding speed rate of the feeding screw in a certain range.

Description

The special-purpose small-range bunker scale of micro-ingredients
Technical field
The utility model relates to the improvement of the bunker scale structure of micro-batching system commonly used in a kind of industrial automation.
Background technology
Bunker scale in the existing Micro-feeding system mainly is the weight that detects the weighing storehouse by measuring instrument, then control flow by the start and stop metering screw, the defective of its existence is that flow is by the rough control of switch, and can not control accurately, general control deviation>20%, thereby caused certain raw-material consumption, also can't guarantee the long-time stability of product.
Summary of the invention
The utility model is exactly for the deficiencies in the prior art, provides a kind of and can accurately control flow, that control deviation is little, the special-purpose small-range bunker scale of reduction micro-ingredients raw materials consumption, the product long-term stability.
For achieving the above object, the utility model adopts following technical scheme, the utility model comprises the PLC master controller and drives frequency converter, its structural feature is that the PLC master controller is exported one group of control signal that is directly proportional with the revolution speed of screw of pressure feeding spiral by the weight that detects the weighing storehouse, and this control signal drives frequency converter can regulate the delivery rate of pressure feeding spiral within the specific limits; Namely set in advance an inertial parameter, system's high speed signal of output removed to drive frequency converter with higher speed operation when the weighing storehouse weight that detects when the PLC master controller and setting value differed larger, when weighing storehouse weight that the PLC master controller detects reach setting value 70% the time system's output middling speed signal driver frequency converter with more slowly speed blanking, when weighing storehouse weight that the PLC master controller detects greater than setting value 90% the time system's dead slow speed signal controlling pressure feeding spiral of output very slowly blanking, system no longer exports control signal when weighing storehouse weight that the PLC master controller detects meets requiring of setting value and inertial parameter value, pressure feeding spiral stops operating, the mode by this multi-change speed can make the control accuracy of feed reach≤0.5%.
The utility model beneficial effect:
The utility model is by the special-purpose control device of improvement micro-ingredients the rough control of switching value of the prior art to be changed into adopting the PLC master controller and driving frequency converter carrying out analog quantity accurate quantification control mode, it can be so that the control accuracy of feed≤0.5%, thereby can greatly reduce raw-material loss, also help very much the control of industrial automation, more be conducive to control the long-time stability of product.
Description of drawings
Fig. 1 is structural principle frame diagram of the present utility model.
The 1-PLC master controller; The 2-frequency converter; The 3-man machine operation interface; The 4-pressure feeding spiral; 5-weighing storehouse; The 6-detection terminal.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, following each description only is used for illustrating embodiment of the present utility model, to the not restriction of the utility model protection domain.
The utility model comprises PLC master controller 1 and frequency converter 2, PLC master controller 1 is exported one group of control signal that is directly proportional with the revolution speed of screw of pressure feeding spiral 4 by the weight that detects weighing storehouse 5, and this control signal drives frequency converter 2 can regulate the delivery rate of pressure feeding spiral 4 within the specific limits; Namely set in advance an inertial parameter, high speed signal of system's output removes to drive frequency converter 2 with higher speed operation when weighing storehouse 5 weight that PLC master controller 1 detects and setting value differ larger, when weighing storehouse 5 weight that PLC master controller 1 detects reach setting value 70% the time system's output middling speed signal driver frequency converter 2 with more slowly speed blanking, when weighing storehouse 5 weight that PLC master controller 1 detects greater than setting value 90% the time system's output dead slow speed signal controlling pressure feeding spiral 4 very slowly blankings, system is in the output control signal when weighing storehouse 5 weight that PLC master controller 1 detects meet requiring of setting value and inertial parameter value, pressure feeding spiral 4 stops operating, the mode by this multi-change speed can make the control accuracy of feed reach≤0.5%.
In the actual use procedure, control PLC master controller 1 by man machine operation interface 3, during real work, be arranged on the signal source that the detection terminal 6 on the weighing storehouse 5 exports and after amplifying, feed back to PLC master controller 1, PLC master controller 1 is exported one group of control signal that is directly proportional with the revolution speed of screw of pressure feeding spiral 4 according to the signal source that obtains, and this control signal drives frequency converter 2 can regulate the delivery rate of pressure feeding spiral 4 within the specific limits.

Claims (1)

1. the special-purpose small-range bunker scale of micro-ingredients, it is characterized in that: comprise PLC master controller (1) and frequency converter (2), PLC master controller (1) is exported one group of control signal that is directly proportional with the revolution speed of screw of pressure feeding spiral (4) by the weight that detects weighing storehouse (5), and this control signal drives frequency converter (2) can regulate the delivery rate of pressure feeding spiral (4) within the specific limits.
CN 201220264909 2012-06-01 2012-06-01 Small-range hopper scale special for trace batching Expired - Fee Related CN202814527U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220264909 CN202814527U (en) 2012-06-01 2012-06-01 Small-range hopper scale special for trace batching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220264909 CN202814527U (en) 2012-06-01 2012-06-01 Small-range hopper scale special for trace batching

Publications (1)

Publication Number Publication Date
CN202814527U true CN202814527U (en) 2013-03-20

Family

ID=47873387

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220264909 Expired - Fee Related CN202814527U (en) 2012-06-01 2012-06-01 Small-range hopper scale special for trace batching

Country Status (1)

Country Link
CN (1) CN202814527U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104132723A (en) * 2014-08-07 2014-11-05 山东金宇实业股份有限公司 Dosing mechanism and medicine conveying system
CN104374461A (en) * 2014-12-08 2015-02-25 国乐忠 Static solid material metering weigher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104132723A (en) * 2014-08-07 2014-11-05 山东金宇实业股份有限公司 Dosing mechanism and medicine conveying system
CN104374461A (en) * 2014-12-08 2015-02-25 国乐忠 Static solid material metering weigher

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130320

Termination date: 20210601

CF01 Termination of patent right due to non-payment of annual fee