CN103623942B - The temperature-controlled process of horizontal screw centrifuge - Google Patents
The temperature-controlled process of horizontal screw centrifuge Download PDFInfo
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- CN103623942B CN103623942B CN201210307006.4A CN201210307006A CN103623942B CN 103623942 B CN103623942 B CN 103623942B CN 201210307006 A CN201210307006 A CN 201210307006A CN 103623942 B CN103623942 B CN 103623942B
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- frequency converter
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- screw centrifuge
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- 238000001816 cooling Methods 0.000 claims abstract 5
- 230000005389 magnetism Effects 0.000 claims abstract 4
- 238000000034 method Methods 0.000 claims abstract 4
- 230000001050 lubricating effect Effects 0.000 claims abstract 3
- 239000000314 lubricant Substances 0.000 claims abstract 2
- 238000005461 lubrication Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
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Abstract
The invention discloses a kind of temperature-controlled process of horizontal screw centrifuge, first controller exports and just establishes set-point to frequency converter, starts the motor of lubricating structure, make lubricants capacity reach working flow 0.5L/min after making frequency converter work in initial operating frequency 25Hz; Then start horizontal screw centrifuge, feeding mechanism and medicating mechanism start charging; Then the temperature signal of the temperature sensor Real-time Feedback be located on bearing block is sent in controller by temperature relay; Last controller sends and controls signal to feeding mechanism, medicating mechanism, frequency converter accordingly or/and magnetism servo-electric motor water-cooling is lowered the temperature to bearing after being compared by the temperature value preset in the temperature signal of Real-time Feedback and controller.Temperature-controlled process of the present invention is adopted to become signal to feed back to controller in time the temperature inversion being arranged on temperature sensor test on bearing block constantly, according to the change of temperature, controller can adjust the cooling profiles of horizontal screw centrifuge in time, avoids bearing Yin Gaowen and damages.
Description
Technical field
The present invention relates to the temperature techniques in horizontal screw centrifuge running, more particularly, relate to a kind of temperature-controlled process of horizontal screw centrifuge.
Background technology
Horizontal type screw settling centrifuge is called for short horizontal screw centrifuge, it is a kind of efficient centrifugal separation equipment, its operation principle is: rotary drum and conveying spiral inner core rotate with certain differential same-directional high-speed, material introduces conveying spiral inner core continuously by feed pipe, rotary drum is entered after acceleration, under effect of centrifugal force, heavier solid formation is deposited on rotatory drum wall and forms sediment layer.The solid formation of deposition is continuously pushed into rotary drum cone end by conveying spiral, and outside slag-drip opening discharge machine, lighter liquid phase thing then forms internal layer pendular ring, overflows rotary drum continuously, outside leakage fluid dram discharge machine by the large end overfall of rotary drum.The continuous feed under full-speed operation of this function, separation, washing and discharging, have the features such as compact conformation, continued operation, smooth running, strong adaptability, production capacity is large, easy to maintenance.Be applicable to being separated and be greater than 0.005mm containing solid formation granularity, concentration range is the suspension of 2-40%.Horizontal screw centrifuge is widely used in the industries such as chemical industry, light industry, pharmacy, food and environmental protection.But in running, due to running up of rotary drum and conveying spiral inner core, the bearing temperature in horizontal screw centrifuge can be raised gradually, under the bearing length time is in the duty of high temperature, machine bearing was very easy to temperature distortion at 6 to 8 months and damages average life.
Summary of the invention
For the defect existed in prior art, the object of this invention is to provide a kind of temperature-controlled process of horizontal screw centrifuge, can be good at the operating temperature controlling horizontal screw centrifuge, avoid bearing Yin Gaowen and damage.
For achieving the above object, the present invention adopts following technical scheme:
A temperature-controlled process for horizontal screw centrifuge, the concrete steps of this temperature-controlled process are:
A. controller exports and just establishes set-point to frequency converter, starts the motor of lubricating structure, make lubricants capacity reach working flow 0.5L/min after making frequency converter work in initial operating frequency 25Hz;
B. start horizontal screw centrifuge, feeding mechanism and medicating mechanism start charging;
C. the temperature signal of the temperature sensor Real-time Feedback be located on bearing block is sent in controller by temperature relay;
D., after the temperature value preset in the temperature signal of Real-time Feedback and controller compares by controller, send and control signal to feeding mechanism, medicating mechanism, frequency converter accordingly or/and magnetism servo-electric motor water-cooling is lowered the temperature to bearing.
First preset temperature value T0 of the controller in described step D is 60 ° of C, the second preset temperature value T1 is 70 ° of C, and the 3rd preset temperature value T2 is 80 ° of C, and the 4th preset temperature value T3 is 90 ° of C, and the Real-time Feedback temperature signal that controller receives is T,
As T≤T0, the rotating speed that controller controls frequency converter remains on 25Hz, makes the flow of lubrication of lubricating structure remain on 0.5L/min;
As T0<T≤T1, controller controls the rising linearly ratio increase of frequency with temperature of frequency converter, and adjusting range is at 25H z-50Hz;
As T1<T≤T2, the frequency that controller controls frequency converter remains on 50Hz, sends the magnetism servo-electric motor water-cooling in control signal unlatching horizontal screw centrifuge with Time Controller;
As T2<T≤T3, the frequency that controller controls frequency converter remains on 50Hz; Magnetism servo-electric motor water-cooling is kept to be in opening; Controller sends control signal and cuts out feeding mechanism and medicating mechanism;
As T3<T, controller controls horizontal screw centrifuge and shuts down and send alarm signal.
Beneficial effect of the present invention is as follows:
Temperature-controlled process of the present invention is adopted to become signal to feed back to controller in time the temperature inversion being arranged on temperature sensor test on bearing block in real time, according to the change of temperature, controller can adjust the cooling profiles of horizontal screw centrifuge in time, avoids bearing Yin Gaowen and damages.Temperature-controlled process of the present invention not only structure is simply easy to use, but also greatly reduces the operating cost of horizontal screw centrifuge lubricating system.After carrying out temperature control as adopted temperature-controlled process of the present invention, in a certain object 16 desk centrifuge (32 bearings), change only 2, bearing in 1 year, this bearing is effectively promoted service life.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the temperature-controlled process of a kind of horizontal screw centrifuge of the present invention.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Refer to the temperature-controlled process of a kind of horizontal screw centrifuge shown in Fig. 1, the concrete steps of this temperature-controlled process are:
11. controllers export just establishes set-point to frequency converter, starts the motor of lubricating structure, make lubricants capacity reach working flow 0.5L/min after making frequency converter work in initial operating frequency 25Hz;
12. start horizontal screw centrifuge, and feeding mechanism and medicating mechanism start charging;
The temperature signal of the temperature sensor Real-time Feedback be located on bearing block is sent in controller by 13. temperature relays;
After the temperature value preset in the temperature signal of Real-time Feedback and controller compares by 14. controllers, if temperature value is greater than the corresponding temperature value preset in controller, then sends and control signal to feeding mechanism, medicating mechanism, frequency converter accordingly or/and magnetism servo-electric motor water-cooling is lowered the temperature to bearing.
Preferably, be 60 ° of C, the second preset temperature value T1 by the first preset temperature value T0 of the controller in above-mentioned steps 14 be 70 ° of C, 3rd preset temperature value T2 is 80 ° of C, 4th preset temperature value T3 is 90 ° of C, and the Real-time Feedback temperature signal that controller receives is T
1) as T≤T0, the rotating speed that controller controls frequency converter remains on 25Hz, makes the flow of lubrication of lubricating structure remain on 0.5L/min;
2) as T0<T≤T1, controller controls the rising linearly ratio increase of frequency with temperature of frequency converter, and adjusting range is at 25Hz-50Hz; Namely, in the temperature range of 60 ° of C to 70 ° of C, the frequency adjustment range of corresponding frequency converter is at 25Hz-50Hz, and the rotating speed of frequency converter drive motor changes, and finally makes the changes in flow rate scope of lubricants capacity in lubricating structure at 0.5L/min-1.0L/min;
In this case, controller, according to temperature feedback signal, changes lubricating system frequency converter frequency in proportion, improves motor speed, thus regulates the flow of lubricating system oil, accelerates heat exchange, accelerates circulation, reduces bearing operating temperatures.
3) as T1<T≤T2, the frequency that controller controls frequency converter remains on 50Hz, and namely in lubricating structure, the flow of lubricants capacity remains on 1.0L/min; The magnetism servo-electric motor water-cooling in control signal unlatching horizontal screw centrifuge is sent, the auxiliary operating temperature reducing bearing with Time Controller.
4) as T2<T≤T3, the frequency that controller controls frequency converter remains on 50Hz, and namely in lubricating structure, the flow of lubricants capacity remains on 1.0L/min; Magnetism servo-electric motor water-cooling is kept to be in opening; Controller sends control signal and cuts out feeding mechanism and medicating mechanism, and to alleviate the load of horizontal screw centrifuge middle (center) bearing, the caloric value reducing bearing reduces temperature;
5) as T3<T, controller control horizontal screw centrifuge shut down and send alarm signal, to bearing and all round parts carry out fault diagnosis.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to object of the present invention is described, and be not used as limitation of the invention, as long as in essential scope of the present invention, the change of the above embodiment, modification all will be dropped in the scope of claim of the present invention.
Claims (1)
1. a temperature-controlled process for horizontal screw centrifuge, is characterized in that:
The concrete steps of this temperature-controlled process are:
A. controller exports and just establishes set-point to frequency converter, starts the motor of lubricating structure, make lubricants capacity reach working flow 0.5L/min after making frequency converter work in initial operating frequency 25Hz;
B. start horizontal screw centrifuge, feeding mechanism and medicating mechanism start charging;
C. the temperature signal of the temperature sensor Real-time Feedback be located on bearing block is sent in controller by temperature relay;
D., after the temperature value preset in the temperature signal of Real-time Feedback and controller compares by controller, send and control signal to feeding mechanism, medicating mechanism, frequency converter accordingly or/and magnetism servo-electric motor water-cooling is lowered the temperature to bearing;
First preset temperature value T0 of the controller in described step D is 60 DEG C, and the second preset temperature value T1 is 70 DEG C, and the 3rd preset temperature value T2 is 80 DEG C, and the 4th preset temperature value T3 is 90 DEG C, and the Real-time Feedback temperature signal that controller receives is T,
As T≤T0, the rotating speed that controller controls frequency converter remains on 25Hz, makes the flow of lubrication of lubricating structure remain on 0.5L/min;
As T0<T≤T1, controller controls the rising linearly ratio increase of frequency with temperature of frequency converter, and adjusting range is at 25Hz-50Hz;
As T1<T≤T2, the frequency that controller controls frequency converter remains on 50Hz, sends the magnetism servo-electric motor water-cooling in control signal unlatching horizontal screw centrifuge with Time Controller;
As T2<T≤T3, the frequency that controller controls frequency converter remains on 50Hz; Magnetism servo-electric motor water-cooling is kept to be in opening; Controller sends control signal and cuts out feeding mechanism and medicating mechanism;
As T3<T, controller controls horizontal screw centrifuge and shuts down and send alarm signal.
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| CN201210307006.4A CN103623942B (en) | 2012-08-26 | 2012-08-26 | The temperature-controlled process of horizontal screw centrifuge |
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| CN201210307006.4A CN103623942B (en) | 2012-08-26 | 2012-08-26 | The temperature-controlled process of horizontal screw centrifuge |
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| CN103623942A CN103623942A (en) | 2014-03-12 |
| CN103623942B true CN103623942B (en) | 2015-09-16 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334632A (en) * | 2016-11-16 | 2017-01-18 | 上海市离心机械研究所有限公司 | Constant Torque Control Method for Horizontal Screw Decanter |
| CN107942878B (en) * | 2017-12-18 | 2019-12-31 | 青岛科海健堂生物有限公司 | Self-learning fault monitoring and alarming system of three-foot centrifuge |
| CN108722688A (en) * | 2018-05-24 | 2018-11-02 | 安徽普源分离机械制造有限公司 | A kind of decanter centrifuge differential controlled system with self-regulation |
| CN110479502B (en) * | 2019-08-21 | 2020-05-12 | 四川宝石机械石油钻头有限责任公司 | High-speed vertical centrifuge |
| CN111113834A (en) * | 2020-01-08 | 2020-05-08 | 宁波长飞亚塑料机械制造有限公司 | Heat dissipation control system and method for injection molding machine |
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| CN1557561A (en) * | 2004-01-18 | 2004-12-29 | 新兴铸管股份有限公司 | High speed centrifugal machine |
| US6866621B1 (en) * | 1999-07-16 | 2005-03-15 | Eppendorf Ag | Laboratory centrifuge, comprising refrigeration unit |
| DE102006027696A1 (en) * | 2006-06-14 | 2007-12-20 | Thermo Electron Led Gmbh | Centrifuge rotor positioning method, involves controlling rotor with voltage or frequency characteristic controller by using three phase asynchronous motor, where characteristic controller is subordinated by control loop |
| CN101648166A (en) * | 2009-09-03 | 2010-02-17 | 高震宇 | High fine centrifugal oil purifying device |
| CN201493176U (en) * | 2009-09-03 | 2010-06-02 | 高震宇 | High-fine oil liquid purifying machine |
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- 2012-08-26 CN CN201210307006.4A patent/CN103623942B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6866621B1 (en) * | 1999-07-16 | 2005-03-15 | Eppendorf Ag | Laboratory centrifuge, comprising refrigeration unit |
| CN1557561A (en) * | 2004-01-18 | 2004-12-29 | 新兴铸管股份有限公司 | High speed centrifugal machine |
| DE102006027696A1 (en) * | 2006-06-14 | 2007-12-20 | Thermo Electron Led Gmbh | Centrifuge rotor positioning method, involves controlling rotor with voltage or frequency characteristic controller by using three phase asynchronous motor, where characteristic controller is subordinated by control loop |
| CN101648166A (en) * | 2009-09-03 | 2010-02-17 | 高震宇 | High fine centrifugal oil purifying device |
| CN201493176U (en) * | 2009-09-03 | 2010-06-02 | 高震宇 | High-fine oil liquid purifying machine |
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