CN202878496U - Frequency converting control system for motor of main stirring machine - Google Patents
Frequency converting control system for motor of main stirring machine Download PDFInfo
- Publication number
- CN202878496U CN202878496U CN 201220366249 CN201220366249U CN202878496U CN 202878496 U CN202878496 U CN 202878496U CN 201220366249 CN201220366249 CN 201220366249 CN 201220366249 U CN201220366249 U CN 201220366249U CN 202878496 U CN202878496 U CN 202878496U
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- motor
- control system
- stirring machine
- main stirring
- frequency converting
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model belongs to the field of concrete stirring equipment, and particularly relates to a control system which is installed in a dry-mixed mortar main stirring machine and is used for carrying out frequency converting control to a motor of a main stirring machine according to different prescriptions. The frequency converting control system for the motor of the main stirring machine comprises a frequency converter which is connected with the motor of the main stirring machine. The frequency converting control system is characterized by further comprising a PLC (Programmable Logic Controller) and a signal receiving device, wherein the PLC comprises a data input end for inputting production mixing ratio parameters, a data storage for storing the production mixing ratio parameters and an inner instruction list, a central processing unit for carrying out comparison between the production mixing ratio parameters and the inner instruction list data and calculating to obtain a control command, and a command output end for outputting the control command; and the command output end of the PLC is used for inputting a signal to the frequency converter through the signal receiving device. According to the frequency converting control system for the motor of the main stirring machine, the starting condition of the motor is changed, so that the active loss due to the transmission of the reactive power is reduced, the utilization rate is increased, and at least over 30% of the power can be saved.
Description
Technical field
The utility model belongs to the concrete batch plant field, is specifically related to according to different formulations the stirring host motor be carried out in the dry powder and mortar stirring host control system of variable frequency adjustment.
Background technology
In recent years, the development of the industries such as the increase that drops into along with national construction project, real estate, the market development of dry powder and mortar mixing plant is more and more faster.The production of conventional dry powder mortar stirring host is followed successively by: calculate prescription, by feed intake in prescription weighing, the backward stirring host of weighing, stirring host stirs, discharging.The general employing at the uniform velocity of existing stirring host stirred, and this kind stirring means has improved production efficiency to a certain extent, but main motor is in the high-speed cruising state for a long time, not only wastes energy but also affects service life of main motor.Along with improving constantly of industrial automatization, frequency converter has obtained utilizing very widely, how the motor of dry powder and mortar stirring host and frequency converter being combined so that the automatic adjustment that the motor of dry powder and mortar stirring host can carry out mixing time and stirring frequency according to different formulations is current industry development trend, also is the current problem of needing solution badly.
The utility model content
The utility model provides a kind of stirring host variable frequency control system of motor, comprise the frequency converter that is connected with the stirring host motor, it is characterized in that: also comprise PLC controller, signal receiving device, described PLC controller comprise for the data input pin of input producting proportion parameter, be used for storage producting proportion parameter and inner meter instruction catalogue data storage, be used for the compare central processing unit that calculates control instruction and be used for instruction output end with control instruction output of producting proportion parameter and built-in command table data; The instruction output end of described PLC controller by signal receiving device to inverter input signal.
The utlity model has following beneficial effect:
The stirring host variable frequency control system of motor that provides according to the utility model, stirring host feed intake, stir finish, frequency converter low cruise during free-runing operation, change the reactive loss of stirring host motor, improve entry condition, improve power factor (PF), the active loss that reduces the reactive power transmission and cause, the power of motor output is directly utilized, is improved utilization, but at least rate power saving more than 30 percent.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the control flow schematic diagram of the utility model embodiment.
The specific embodiment
In order better to understand the technical solution of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.
With reference to shown in Figure 1, present embodiment stirring host frequency-changing control system mainly comprises frequency converter 2, signal receiving device 3 and the PLC controller 4 that is connected with the motor of stirring host 1.PLC controller 4 comprises data input pin 41, data storage 42, central processing unit 43 and instruction output end 44, and instruction output end 44 passes through signal receiving device 3 to frequency converter 2 input signals.
With reference to shown in Figure 1, when stirring beginning, prescription and technological parameter by data input pin 41 input dry powder and mortars productions, central processing unit 43 carries out automatic comparison according to prescription, technological parameter and the built-in command data of data storage 42 interior storages and calculates control instruction, and instruction output end 44 passes through signal receiving device 3 to frequency converter 2 interior input signals.
Feed intake in stirring host in order after the weigher metering is finished, this moment, main motor improved stirring torque with the stirring at low speed frequency run; The end aft engine motor that feeds intake still keeps the stirring at low speed frequency of a period of time; After a period of time, the main motor frequency conversion will be mixed the even mix of cylinder material with the high-speed stirred frequency run, until finish stirring; Stirring is finished the aft engine motor and is begun carry out to stir and finish frequency, simultaneously stirring host discharging; After finishing, the stirring host discharging carries out the idle running frequency.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, the equivalence of namely doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (1)
1. stirring host variable frequency control system of motor, comprise the frequency converter that is connected with the stirring host motor, it is characterized in that: also comprise PLC controller, signal receiving device, described PLC controller comprises data input pin, data storage, central processing unit and instruction output end; The instruction output end of described PLC controller by signal receiving device to inverter input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366249 CN202878496U (en) | 2012-07-27 | 2012-07-27 | Frequency converting control system for motor of main stirring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366249 CN202878496U (en) | 2012-07-27 | 2012-07-27 | Frequency converting control system for motor of main stirring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202878496U true CN202878496U (en) | 2013-04-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366249 Expired - Lifetime CN202878496U (en) | 2012-07-27 | 2012-07-27 | Frequency converting control system for motor of main stirring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202878496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786259A (en) * | 2014-02-14 | 2014-05-14 | 上海三一重机有限公司 | Rotating speed adaptive frequency conversion control system and method for concrete mixer |
-
2012
- 2012-07-27 CN CN 201220366249 patent/CN202878496U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786259A (en) * | 2014-02-14 | 2014-05-14 | 上海三一重机有限公司 | Rotating speed adaptive frequency conversion control system and method for concrete mixer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Fengze District of Quanzhou City, Fujian province 362000 Xunmei Industrial Zone Patentee after: Fujian Nanfang pavement machinery Co.,Ltd. Address before: Fengze District of Quanzhou City, Fujian province 362000 Xunmei Industrial Zone Patentee before: FUJIAN SOUTH HIGHWAY MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
|
| CX01 | Expiry of patent term |