CN201127910Y - Constant load helical discharging sedimentation centrifuge - Google Patents
Constant load helical discharging sedimentation centrifuge Download PDFInfo
- Publication number
- CN201127910Y CN201127910Y CNU200720041854XU CN200720041854U CN201127910Y CN 201127910 Y CN201127910 Y CN 201127910Y CN U200720041854X U CNU200720041854X U CN U200720041854XU CN 200720041854 U CN200720041854 U CN 200720041854U CN 201127910 Y CN201127910 Y CN 201127910Y
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- centrifuge
- motor
- feed pump
- conversion device
- frequency conversion
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Abstract
The utility model provides a constant-load spiral unloading sedimentary centrifuge, which comprises a centrifuge barrate, a spiral conveyer arranged inside the centrifuge barrate, a centrifuge motor for driving the spiral conveyer to rotate, a charging pump for sending suspending liquid to the inner part of the spiral conveyer, and a charging pump motor for driving the charging pump, wherein, the centrifuge motor is in electric connection with a centrifuge motor frequency transformator for controlling the rotating speed of the centrifuge motor, the charging pump motor is in electric connection with a charging pump motor frequency transformator for controlling the rotating speed of the charging pump motor, the centrifuge motor frequency transformator, a computer and the charging pump motor frequency transformator are in electric connection in sequence to form a detection control loop which detects the electric current of the centrifuge motor and controls the material inputted into the spiral conveyer by changing the rotating speed of the charging pump motor, thereby keeping the electric current of the centrifuge motor constant, realizing the constant load of the spiral conveyer and ensuring that the spiral centrifuge realizes the automatic and continuous constant load operation.
Description
Technical field
The utility model relates to a kind of spiral discharge sedimentation centrifuge.
Background technology
Spiral discharge sedimentation centrifuge is to utilize the centrifugal sedimentation principle suspension to be carried out the device of liquid-solid separation, existing spiral discharge sedimentation centrifuge generally includes rotary drum, is arranged at an auger conveyor and a feed pump in the rotary drum, auger conveyor is by the centrifuge motor-driven, feed pump is sent into suspension in the auger conveyor, and suspension is pushed by auger conveyor and also carries out Separation of Solid and Liquid therein.
In the spiral discharge sedimentation centrifuge running, owing to enter the fluctuation of the material concentration in the centrifuge, cause auger conveyor pusher moment variations in the rotary drum, material concentration is high more, and spiral pusher moment is big more, when material concentration surpasses certain value, can cause the obstruction of solid-phase material in the helical duct of auger conveyor, at this moment, auger conveyor pusher moment sharply rises, cause centrifuge parts overload, even can cause the centrifuge damage of components.
Present screw centrifuge causes centrifuge parts overload for prevent that solid-phase material from stopping up in helical duct, machinery-electrical equipment interlocking protective device generally is installed on the centrifuge member, or overflow protecting element is set in electric appliance control box.When the centrifuge input concentration raises; the pusher moment of auger conveyor increases; when pusher moment increases to certain value; motor current also can rise to certain value; machinery-electrical equipment interlocking protective device action; or overflow protecting element would trip in the electric appliance control box; the centrifuge autostop; feed pump is shut down simultaneously; realize overload protection, treat that operating personnel fix a breakdown after, restart centrifuge work; the continuous operation that this passive overload protection mode has influenced centrifuge has brought trouble to operating personnel.
Summary of the invention
The purpose of this utility model provides a kind of constant load spiral discharge sedimentation centrifuge, and it can regulate the feed rate of feed pump according to the instant electric current of centrifuge motor, control centrifuge current of electric substantially constant.
The technical solution of the utility model is: a kind of constant load spiral discharge sedimentation centrifuge, comprise bowl, be arranged at the auger conveyor in the described bowl, drive the centrifuge motor of described augur, be used for suspension is sent into feed pump in the auger conveyor, drive the feed pump motor of described feed pump, have one between described centrifuge motor and the feed pump motor and detect control loop, this detection control loop comprises centrifuge motor frequency conversion device, computer and feed pump motor frequency conversion device, the signal receiving end of described centrifuge motor frequency conversion device is electrically connected with the centrifuge motor, the signal output part of described centrifuge motor frequency conversion device is electrically connected with the signal receiving end of computer, the signal output part of described computer is electrically connected with the signal receiving end of feed pump motor frequency conversion device, and the signal output part and the feed pump motor of described feed pump motor frequency conversion device are electrically connected.
The utility model has the advantages that: the centrifuge motor can set in advance a constant electricity value, when the suspension concentration that enters auger conveyor increases or reduces, solid-phase material meeting respective change in the helical duct of auger conveyor, cause the spiral pusher moment variations, make the electric current of centrifuge motor change, the centrifuge motor frequency conversion device of control centrifuge motor passes to computer with current changing signal, the frequency of being sent signal controlling feed pump motor frequency conversion device by computer changes rapidly, feed pump rotating speed of motor respective change, the amount that makes feed pump be delivered to the suspension of auger conveyor changes simultaneously, the pusher moment of auger conveyor is recovered rapidly, and the electric current of centrifuge motor also returns to default steady state value rapidly.By the electric current substantially constant of control centrifuge motor, realize auger conveyor load substantially constant, screw centrifuge just can be realized continuous automatically constant load operation, to increase work efficiency.
Description of drawings
Accompanying drawing 1 is a sectional structure schematic diagram of the present utility model;
Wherein: 1, bowl; 2, centrifuge motor; 3, centrifuge motor frequency conversion device; 4, computer; 5, feed pump motor frequency conversion device; 6, feed pump motor; 7, feed pump; 8, auger conveyor; 9, solid formation outlet; 10, differential mechanism transmission mechanism; 11, parting liquid outlet; 12, helical duct.
The specific embodiment
Figure 1 shows that the structural representation of a kind of embodiment of the present utility model, a kind of constant load spiral discharge sedimentation centrifuge as shown in Figure 1, it comprises bowl 1, be arranged at auger conveyor 8 in the bowl 1, drive centrifuge motor 2 that this auger conveyor 8 rotates, be used for suspension is sent into feed pump 7 in the auger conveyor 8, driven the feed pump motor 6 of described feed pump 7.Centrifuge motor 2 is electrically connected with the signal receiving end of centrifuge motor frequency conversion device 3, the running of these centrifuge motor frequency conversion device 3 these centrifuge motors 2 of control, and the current changing signal of reception centrifuge motor 2; The signal output part of described centrifuge motor frequency conversion device 3 is electrically connected with the signal receiving end of computer 4, the signal output part of described computer 4 is electrically connected with the signal receiving end of feed pump motor frequency conversion device 5, centrifuge motor frequency conversion device 3 current changing signals with centrifuge motor 2 pass to computer 4, and computer 4 sends signal and gives charging pump motor frequency converter 5; The signal output part and the feed pump motor 6 of described feed pump motor frequency conversion device 5 are electrically connected, the running and the rotating speed of feed pump motor frequency conversion device 5 output frequency signals control feed pump motor 6.
Described centrifuge motor frequency conversion device 3, feed pump motor frequency conversion device 5 and computer 4 threes constitute the detection control loop, be used to detect the electric current of centrifuge motor 2 and control the material of importing in the auger conveyor 8 by the rotating speed of change feed pump motor 6, thereby the electric current substantially constant that keeps centrifuge motor 2, concrete principle back can be described in detail.
Centrifuge motor 2 is in transmission connection by differential mechanism transmission mechanism 10 and auger conveyor 8, has helical duct 12 between auger conveyor 8 and the bowl 1, has solid formation outlet 9 and parting liquid outlet 11 on bowl 1.Among Fig. 1, arrow A is represented suspension, arrow B band material parting liquid, thick black arrow C is then represented solid-phase material, and feed pump motor 6 drives feed pump 7 and rotates, and is that suspending liquid A is sent in the auger conveyor 8 with material, centrifuge motor 2 drives auger conveyor 8 and rotates, make suspension enter process high-speed separation in the helical duct 12, the solid-phase material B after the separation discharges from solid formation outlet 9 by auger conveyor 8 pushers, and parting liquid C then discharges from parting liquid outlet 11.
Before this spiral discharge sedimentation centrifuge running, with centrifuge motor 2 default constant current values, when the suspension concentration in entering auger conveyor 8 increases, solid-phase material in the helical duct 12 increases, cause spiral pusher moment to increase, the electric current of centrifuge motor 2 raises, centrifuge motor frequency conversion device 3 can pass to computer 4 with the signal that electric current raises, send signal by computer 4, be generally pulse signal, give charging pump motor frequency converter 5, the output frequency of feed pump motor frequency conversion device 5 can reduce rapidly, corresponding the slowing down of rotating speed of control feed pump 6, and the inlet amount that enters centrifuge promptly can reduce, the pusher moment of auger conveyor 8 is decreased to preset level rapidly, and the electric current of centrifuge motor 2 also can be decreased to the steady state value that sets in advance rapidly; When the suspension concentration that enters auger conveyor 8 reduces, the corresponding minimizing of solid-phase material in the helical duct 12, the pusher moment of auger conveyor 12 reduces, the electric current of centrifuge motor 2 just can reduce, centrifuge motor frequency conversion device 3 passes to computer 4 with the signal that electric current reduces, send signal by computer 4 and give charging pump motor frequency converter 5, the output frequency of control feed pump motor frequency conversion device 5 raises rapidly, make the corresponding quickening of rotating speed of feed pump 6, the inlet amount that enters centrifuge increases simultaneously, the pusher moment of the auger conveyor 8 of centrifuge also can increase sharply, and makes the electric current of centrifuge motor 2 increase to the steady state value that sets in advance.
Like this, this screw centrifuge has just been realized the state of constant load work, and the electric current that guarantees centrifuge motor 2 substantially is a steady state value, and the pusher moment of promptly controlling auger conveyor 8 is steady state value, with guarantee screw centrifuge continuously, automatically, safely the operation.
Claims (1)
1, a kind of constant load spiral discharge sedimentation centrifuge, comprise bowl (1), be arranged at the auger conveyor (8) in the described bowl (1), drive the centrifuge motor (2) that described auger conveyor (8) rotates, be used for suspension is sent into the interior feed pump (7) of auger conveyor (8), drive the feed pump motor (6) of described feed pump (7), it is characterized in that: have one between described centrifuge motor (2) and the feed pump motor (6) and detect control loop, this detection control loop comprises centrifuge motor frequency conversion device (3), computer (4) and feed pump motor frequency conversion device (5), the signal receiving end of described centrifuge motor frequency conversion device (3) is electrically connected with centrifuge motor (2), the signal output part of described centrifuge motor frequency conversion device (3) is electrically connected with the signal receiving end of computer (4), the signal output part of described computer (4) is electrically connected with the signal receiving end of feed pump motor frequency conversion device (5), and the signal output part of described feed pump motor frequency conversion device (5) and feed pump motor (6) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720041854XU CN201127910Y (en) | 2007-11-20 | 2007-11-20 | Constant load helical discharging sedimentation centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720041854XU CN201127910Y (en) | 2007-11-20 | 2007-11-20 | Constant load helical discharging sedimentation centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201127910Y true CN201127910Y (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720041854XU Expired - Fee Related CN201127910Y (en) | 2007-11-20 | 2007-11-20 | Constant load helical discharging sedimentation centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201127910Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531031A (en) * | 2013-09-09 | 2016-04-27 | 德里克公司 | Centrifuge with automatic sampling and control and method thereof |
| CN107377241A (en) * | 2017-09-04 | 2017-11-24 | 江苏泰利达新材料股份有限公司 | A kind of screw pump and centrifuge automatic linkage control system device |
| CN108127801A (en) * | 2017-12-07 | 2018-06-08 | 上海申和热磁电子有限公司 | A kind of method for improving mortar recovery system centrifuge ability |
-
2007
- 2007-11-20 CN CNU200720041854XU patent/CN201127910Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531031A (en) * | 2013-09-09 | 2016-04-27 | 德里克公司 | Centrifuge with automatic sampling and control and method thereof |
| CN105531031B (en) * | 2013-09-09 | 2019-05-10 | 德里克公司 | Centrifuge and its method with automatic sampling and control |
| CN107377241A (en) * | 2017-09-04 | 2017-11-24 | 江苏泰利达新材料股份有限公司 | A kind of screw pump and centrifuge automatic linkage control system device |
| CN108127801A (en) * | 2017-12-07 | 2018-06-08 | 上海申和热磁电子有限公司 | A kind of method for improving mortar recovery system centrifuge ability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20091221 |