CN101301543A - Error correcting device of band type filter press - Google Patents
Error correcting device of band type filter press Download PDFInfo
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- CN101301543A CN101301543A CNA2008100594061A CN200810059406A CN101301543A CN 101301543 A CN101301543 A CN 101301543A CN A2008100594061 A CNA2008100594061 A CN A2008100594061A CN 200810059406 A CN200810059406 A CN 200810059406A CN 101301543 A CN101301543 A CN 101301543A
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Abstract
The invention discloses a correcting device of a belt filter press, comprising a sensor, a controller and an executing component, the sensor comprises an excursion sensor and a displacement sensor that adopt angle sensors, the executing component comprises an electric engine steering controller, an excursion-regulating electric engine, a transmission mechanism and a correcting roller, the angle sensors of the displacement sensor and the excursion sensor are respectively mounted right above standard positions of a filter belt and the correcting roller; the angle detection signals of the filter belt and the correcting roller, which are detected and output by the angle sensors, are transformed by the controller to output a control signal for controlling the correcting motions of the executing component. By adopting the semi-continuous correcting way having correcting roller pulse type regulation and using the angle sensors to continuously detect the displacement signal, the invention overcomes the flaws in the prior art and has the advantages of reasonable structure and simple control as well as achieves, at very low manufacturing cost, the continuous correction control precision in the continuous correcting device which requires high cost.
Description
Technical field
The present invention relates to a kind of deviation correcting device, particularly a kind of deviation correcting device that is used for the belt filter press of belt filter press filter bag correction.
Background technology
Belt filter press is in operation process; because live-roller installation errors and the filter bag horizontal tension that is subjected in service are inconsistent; the phenomenon of filter bag sideslip occurs through regular meeting, influence the normal operation of belt filter press, need deviation correcting device to correct the position of filter bag sideslip.Deviation correcting device mainly is made of sensor, controller and correction execution unit, according to control mode classification two kinds of switching mode and continuous types is arranged.The control of switching mode deviation correcting device is simple, but the correction ratio of precision is lower.The continuous type deviation correcting device has full gas control type, photocell eye following-up type, the gentle hydraulic servo type of photo resistance type etc. several, continuous correction mode control accuracy height, yet its correction cost is high a lot of than the switching mode correction, though full gas control type deviation correcting device relative cost is lower, but air consumption is very big, cost performance is lower, and photocell eye following-up type and photo resistance type deviation correcting device are also incompatible to be used in the more abominable occasion of environment.Chinese patent 01227652.9 " belt filter press strainer deviation correcting device " discloses a kind of switching mode deviation correcting device, the left and right sides limitation travel switch that this deviation correcting device adopts the strainer both sides to be provided with detects the skew of strainer, carries out the tuningout function by being arranged on the strainer bottom with its regulating roller that touches mutually.As differentiating strainer foundation placed in the middle, accuracy of judgement can not produce the tuningout error to this deviation correcting device with the strainer physical location.Yet it can only detect two location points of strainer, and control accuracy is lower, and if left and right sides limitation travel switch mounting distance far away excessively, can cause the snakelike operation of strainer; If mounting distance is near excessively, can cause the frequent action of regulating roller, reduce service life greatly.Chinese patent 200510024244.4 " a kind of deviation correcting device that is used on the paper machine " discloses the full gas control deviation correcting device of a kind of continuous type, and it is made up of signal control valve, signal amplifying valve and rectifying cylinder, guide roller.Act on the atmospheric pressure variation of signal amplifying valve above and below when utilizing net blanket sideslip in the use by signal control valve, make rectifying cylinder promote guide roller and finish the correction action.This deviation correcting device structure is compact, correction continuously, and servo-actuated and good stability, very general in the paper industry application, but there is the defective that gas consumption is big, power consumption is high in it.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the defective that prior art exists, provide a kind of continuous correction, control accurately, the deviation correcting device of the belt filter press of stable action, economical and energy saving.
The present invention addresses the above problem the technical scheme that is adopted: the deviation correcting device of this belt filter press, comprise sensor, controller and execution unit, its design feature is: described sensor comprises offset sensor and displacement transducer, sensor adopts angular transducer, described execution unit comprises the motor steering controller, the tuningout motor, transmission mechanism and correction roller, the angular transducer of described offset sensor and displacement transducer is installed in the side of filter bag and correction roller normal place respectively, the tuningout motor is connected with the motor steering controller, the transmission mechanism two ends are connected with the correction roller with the tuningout motor respectively, the correction roller is close to filter bag and is installed, the output of sensor links to each other with the input of controller, the output of controller links to each other with the motor steering controller, the motor steering controller connects power supply, described angular transducer detects and the filter bag of output and the angle detection signal of correction roller, calculates the control signal of back output control execution unit correction action by control algolithm through controller.
The described angular transducer of the deviation correcting device of belt filter press of the present invention connects lever, lever one end of offset sensor is close to filter bag, lever one end of displacement transducer is near the correction roller, described angular transducer adopts the contactless potentiometer of magnetic resistance, described controller adopts the Industry Control processor, described controller is handled the angle detection signal of angular transducer output according to pid control algorithm, converts the control signal of control execution unit to.
The described motor steering controller of the deviation correcting device of belt filter press of the present invention adopts solid-state relay, described transmission mechanism mainly is made of reduction box and drive lead screw, described solid-state relay links to each other with controller, the tuningout motor is connected with solid-state relay, the two ends of reduction box are connected with driving member with the tuningout motor respectively, driving member is connected with the correction roller, described solid-state relay is controlled turning to of tuningout motor according to the control signal of controller output, and the tuningout motor drives the action of correction roller by driving member.
The present invention compared with prior art has the following advantages: 1, the deviation correcting device of this belt filter press adopts angular transducer to carry out the semicontinuous type correction mode of displacement signal continuous detecting, the adjustment of correction roller pulsed, rational in infrastructure, control science, reach the continuous rectifying effect that needs the continuous type of high cost investment deviation correcting device to realize with very low manufacturing cost, had high performance price ratio.This deviation correcting device has overcome the defective that prior art switching mode deviation correcting device and continuous type deviation correcting device exist, and has that the control of switching mode deviation correcting device is simple concurrently, low cost of manufacture and the continuous type deviation correcting device is rectified a deviation continuously, control accuracy is a high advantage.2, sensor of the present invention adopts the contactless potentiometer of magnetic resistance cheaply, and is stable and reliable for performance, owing to be contactless detection, long service life; The operating frequency of correction roller is low in this deviation correcting device correction, action displacement is little, and energy consumption is low, belongs to energy-saving deviation correcting device.
Description of drawings
Fig. 1 is the deviation correcting device structural representation of embodiment of the invention belt filter press.
Fig. 2 is the deviation correcting device circuit connection theory diagram of embodiment of the invention belt filter press.
Fig. 3 detects principle schematic for embodiment of the invention angular transducer.
Fig. 4 is the invention process csr controller correction control program block diagram.
The specific embodiment
Below by embodiment, the invention will be further elaborated in conjunction with the accompanying drawings.
Example structure is referring to Fig. 1, Fig. 2, and the deviation correcting device of this belt filter press comprises sensor 1, controller 2 and execution unit 3.Sensor 1 comprises offset sensor 11 and displacement transducer 12; Execution unit 3 comprises motor steering controller, tuningout motor 32, transmission mechanism 33 and correction roller 34.Offset sensor 11 and displacement transducer 12 be installed in respectively filter bag 5 and correction roller 34 normal places directly over, correction roller 24 is close to filter bag 5 and is installed, tuningout motor 32 is connected with the motor steering controller, the transmission mechanism two ends are connected with correction roller 24 with tuningout motor 22 respectively, the output of sensor 1 links to each other with the input of controller 2, the output of controller 2 links to each other with the motor steering controller, and the motor steering controller connects power supply.Sensor 1 detects and the filter bag 5 of output and the detection signal of correction roller 24, calculates the control signal of back output control execution unit 3 correction actions by control algolithm through controller 2.Among Fig. 1,4 for the roller of belt filter press, the direction of arrow be the traffic direction of filter bag 5; Among Fig. 2, AI1 is that the analog signals input channel of offset sensor 11, analog signals input channel, Y1 and the Y2 that AI2 is displacement transducer 12 are the digital quantity signal output channel of controller 1, the common place that COM is controller 2.
Embodiment sensor 1 adopts angular transducer, is the contactless potentiometer of magnetic resistance, and angular transducer connects lever, and lever 13 1 ends of offset sensor 11 are close to filter bag 5, and lever 14 1 ends of displacement transducer 12 are near correction roller 34.Controller 2 adopts the Industry Control processor, and CPU selects ARM7 series for use.The motor steering controller of execution unit 3 adopts solid-state relay 31, and tuningout motor 32 adopts ac three-phase asynchronous motor, and transmission mechanism 33 mainly is made of reduction box 331 and driving member 332, and present embodiment driving member 332 adopts drive lead screw; Solid-state relay 31 links to each other with controller 2, and tuningout motor 32 is connected with solid-state relay 31, and the two ends of reduction box 331 are connected with driving member 332 with tuningout motor 32 respectively, and driving member 332 is connected with correction roller 34.Solid-state relay 31 is according to the forward or reverse of the control signal control tuningout motor 32 of controller 2 outputs, and tuningout motor 32 drives correction roller 34 by reduction box 331 and driving member 332 and does positive and negative motion.Controller 2, offset sensor 11 and displacement transducer 12 are direct current 5V power supply, and tuningout motor 32 power supplys are for exchanging 380V, and offset sensor 11 and displacement transducer 12 output signals are 0-5V.
The embodiment angular transducer detects principle referring to Fig. 3, angular transducer by lever be installed in filter bag 5 or correction roller 34 normal places directly over, lever one end is near filter bag 5 or correction roller 34, along with skew or displacement about filter bag 5 or correction roller 34, the corresponding rotation of angular transducer.Because correction roller 34 positions and filter bag 5 move towards to close, filter bag 5 moves toward acutangulate that lateral deviation of correction roller 34 position vertical direction all the time, can produce a component in this side, impels filter bag 5 to move.If filter bag 5 or correction roller 34 are in normal place be angular transducer to the vertical range of filter bag 5 or correction roller 34 is H, it is a that the skew of filter bag 5 or correction roller 34 or displacement make the angular transducer deviation angle, the skew or the displacement of filter bag 5 or correction roller 34 are x, according to the trigonometric function of skew or displacement and deviation angle relation:
x＝H*tg(a)··························(1)
The cotangent of skew or displacement and deviation angle is directly proportional, can converse the skew or the displacement of filter bag 5 or correction roller 34 according to the angle signal of angular transducer output, because angle signal is a continuous analog signal, so the skew or the displacement of filter bag 5 that converts or correction roller 34 also are continuous signals; Controller 2 is handled the detection signal of angular transducer output according to pid control algorithm, converts the control signal of control execution unit 3 to.
Embodiment controller 2 correction control programs are referring to Fig. 4, and controller 2 is taked as the control of figure dicyclo, and first ring is according to continuous pid control algorithm, and second ring adopts switch control, make correction roller 34 run to the given position that is drawn by pid algorithm.Suppose that filter bag 5 positions are given as S0, position feedback is P0, alternate position spike E0=S0-P0, the correction roller given S1 in 34 positions, feedback P1, alternate position spike E1=S1-P1 are drawn by pid algorithm:
S1(k)＝S1(k-1)+k
p*(E0(k)-E0(k-1))+k
i*E0(k)··········(2)
K wherein
i=k
p* T/T
i, T is sampling period, T
iBe integral constant.
The second ring control algolithm is as follows: if E1＞0, and | E1|＞A, then motor is just changeing till E1=0; If E1＜0 and | E1|＞A, then motor counter-rotating is till E1=0, A is for adjusting dead zone range, it is more little that the A value obtains, correction roller 34 is carried out the correction action more near continuous type, precision is also high more.
Deviation correcting device correction process of the present invention is as follows:
At first set the position quantity of filter bag 5, the AI1 signal input channel of controller 2 is gathered the analog signals of deflection correction sensor 11, obtains the deviation angle of filter bag 5; Calculate the physical location amount of filter bag 5 again according to (1) formula, the difference that the position quantity of setting filter bag 5 is subtracted the physical location amount of filter bag 5 is delivered to pid algorithm (2) formula, calculating correction roller 34 needs the position of arrival, if the position quantity of setting is greater than the position quantity of filter bag reality, correction roller 34 position quantity will increase; Then, the Y1 signal output channels of controller 2 sends control signal, solid-state relay 31 is connected allowed tuningout motor 32 just change, and drives correction roller 34 by reduction box 331 and driving member 332 and moves to the position that PID calculates, thereby correct the position of filter bag 5.The desired location amount of filter bag 5 and the difference of physical location amount are big more, and the distance that correction roller 34 moves is many more, and the correction action is strong more, otherwise, just more weak.If the difference retention time is long, by integral action, the distance that calculates correction roller 34 places also slowly becomes big.If the position quantity of setting is less than the position quantity of filter bag 5 reality, correction roller 34 position quantity will reduce, the Y2 signal output channels of controller 2 sends control signal, solid-state relay 31 is connected allowed tuningout motor 32 reverse, drive correction roller 34 by reduction box 331 and driving member 332 and move to the position that PID calculates, make the skew of filter bag 5 obtain correcting, if the difference retention time is long, by integral action, the distance that calculates correction roller place also slowly diminishes.This correction mode has the feature of continuous control, can accurately be controlled at the position of filter bag 5 on the position of setting.
The belt filter press that disposes deviation correcting device of the present invention is applicable to that the Separation of Solid and Liquid of various organic and inorganic microparticle suspension of industrial wastewater, paper pulp, oily sludge, domestic sludge or the like such as paper industry, chemical industry, food service industry or solidliquid mixture handles.
Deviation correcting device of the present invention can also be applied to the operating driving-belt correction of other plant equipment that driving-belt is arranged except that the correction of the filter bag that is used for belt filter press.
Claims (3)
1, a kind of deviation correcting device of belt filter press, comprise sensor, controller and execution unit, it is characterized in that: described sensor comprises offset sensor and displacement transducer, sensor adopts angular transducer, described execution unit comprises the motor steering controller, the tuningout motor, transmission mechanism and correction roller, the angular transducer of described offset sensor and displacement transducer is installed in the side of filter bag and correction roller normal place respectively, the tuningout motor is connected with the motor steering controller, the transmission mechanism two ends are connected with the correction roller with the tuningout motor respectively, the correction roller is close to filter bag and is installed, the output of sensor links to each other with the input of controller, the output of controller links to each other with the motor steering controller, the motor steering controller connects power supply, described angular transducer detects and the filter bag of output and the angle detection signal of correction roller, calculates the control signal of back output control execution unit correction action by control algolithm through controller.
2, the deviation correcting device of belt filter press according to claim 1, it is characterized in that: described angular transducer connects lever, lever one end of offset sensor is close to filter bag, lever one end of displacement transducer is near the correction roller, described angular transducer adopts the contactless potentiometer of magnetic resistance, described controller adopts the Industry Control processor, described controller is handled the angle detection signal of angular transducer output according to control algolithm, converts the control signal of control execution unit to.
3, the deviation correcting device of belt filter press according to claim 2, it is characterized in that: described motor steering controller adopts solid-state relay, described transmission mechanism mainly is made of reduction box and driving member, described solid-state relay links to each other with controller, the tuningout motor is connected with solid-state relay, the two ends of reduction box are connected with drive lead screw with the tuningout motor respectively, driving member is connected with the correction roller, described solid-state relay is controlled turning to of tuningout motor according to the control signal of controller output, and the tuningout motor drives the action of correction roller by transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810059406 CN101301543B (en) | 2008-01-17 | 2008-01-17 | Error correcting device of band type filter press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810059406 CN101301543B (en) | 2008-01-17 | 2008-01-17 | Error correcting device of band type filter press |
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| Publication Number | Publication Date |
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| CN101301543A true CN101301543A (en) | 2008-11-12 |
| CN101301543B CN101301543B (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810059406 Expired - Fee Related CN101301543B (en) | 2008-01-17 | 2008-01-17 | Error correcting device of band type filter press |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602730A (en) * | 2012-03-23 | 2012-07-25 | 西南铝业（集团）有限责任公司 | Rectification control system |
| CN103170688A (en) * | 2011-12-21 | 2013-06-26 | 发那科株式会社 | Working fluid filtering device for electrical discharge machine |
| CN105004310A (en) * | 2015-06-17 | 2015-10-28 | 浙江工商大学 | Whole-pallet transportation goods in transit deviation detection device |
| CN106039788A (en) * | 2016-05-13 | 2016-10-26 | 安庆市峰邦工业产品设计有限公司 | Tension and position offset adjusting device for filter cloth of sludge press filter |
| CN109329109A (en) * | 2018-12-04 | 2019-02-15 | 青岛大牧人机械股份有限公司 | A kind of cage culture manure clearing band dynamic adjusting device |
-
2008
- 2008-01-17 CN CN 200810059406 patent/CN101301543B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170688A (en) * | 2011-12-21 | 2013-06-26 | 发那科株式会社 | Working fluid filtering device for electrical discharge machine |
| CN103170688B (en) * | 2011-12-21 | 2015-03-25 | 发那科株式会社 | Working fluid filtering device for electrical discharge machine |
| CN102602730A (en) * | 2012-03-23 | 2012-07-25 | 西南铝业（集团）有限责任公司 | Rectification control system |
| CN102602730B (en) * | 2012-03-23 | 2015-11-25 | 西南铝业（集团）有限责任公司 | A kind of deviation correction control system |
| CN105004310A (en) * | 2015-06-17 | 2015-10-28 | 浙江工商大学 | Whole-pallet transportation goods in transit deviation detection device |
| CN105004310B (en) * | 2015-06-17 | 2018-01-23 | 浙江工商大学 | A kind of whole palletized transport in-transit goods deviation detection device |
| CN106039788A (en) * | 2016-05-13 | 2016-10-26 | 安庆市峰邦工业产品设计有限公司 | Tension and position offset adjusting device for filter cloth of sludge press filter |
| CN109329109A (en) * | 2018-12-04 | 2019-02-15 | 青岛大牧人机械股份有限公司 | A kind of cage culture manure clearing band dynamic adjusting device |
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| Publication number | Publication date |
|---|---|
| CN101301543B (en) | 2010-07-14 |
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