CN116371618A - Automatic discharging method and device of scraper centrifuge and scraper centrifuge - Google Patents
Automatic discharging method and device of scraper centrifuge and scraper centrifuge Download PDFInfo
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- CN116371618A CN116371618A CN202310321146.5A CN202310321146A CN116371618A CN 116371618 A CN116371618 A CN 116371618A CN 202310321146 A CN202310321146 A CN 202310321146A CN 116371618 A CN116371618 A CN 116371618A
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- 238000007599 discharging Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000012065 filter cake Substances 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
Abstract
The invention relates to the technical field of centrifuges, in particular to an automatic discharging method and device of a scraper centrifuge and the scraper centrifuge. The automatic discharging method of the scraper centrifuge comprises the following steps: when the rotary drum is unloaded in the rotating process, rotary drum operation parameters are obtained in real time, wherein the rotary drum operation parameters comprise rotary drum operation current or rotary drum rotation speed; comparing the running current of the rotary drum with the protection current, or comparing the rotating speed of the rotary drum with the protection rotating speed, and determining whether the scraper needs to be retracted and the feeding amount is readjusted for discharging according to the comparison result. According to the comparison result, whether the rotary drum is jammed in the rotating process or not can be known, whether the scraper is required to retract and readjust the feeding amount to discharge is determined according to the comparison result, so that the phenomenon that the current of a motor of the rotary drum is increased due to mutual interference between a filter cake attached to the rotary drum and the scraper is prevented, and the phenomenon that the rotary drum still cannot freely rotate and cannot automatically discharge due to the increase of the current of the motor is prevented.
Description
Technical Field
The invention relates to the technical field of centrifuges, in particular to an automatic discharging method and device of a scraper centrifuge and the scraper centrifuge.
Background
The scraper centrifuge has the working principle that a motor drives a rotary drum to rotate, when the feeding rotating speed state is reached, materials to be separated enter the rotary drum rotating at a high speed through a feeding pipe, the feeding is stopped after the feeding reaches a preset volume, the materials are separated at a high speed, the materials are filtered through filter cloth (filter screen) under the action of centrifugal force, liquid phase passes through a rotary drum hole of a filter layer and is thrown to a cavity to be discharged through a liquid outlet pipe, solid phase is trapped in the rotary drum to form a barrel-shaped filter cake, the filter cake can be washed later, the rotating speed is reduced to a discharging rotating speed state after the separating requirement is reached, and a scraper device acts to scrape the filter cake from the inner wall of the rotary drum and discharge the filter cake through a discharge hole at the lower part of the centrifuge. It is suitable for solid-liquid separation of suspension containing fine granularity and medium granularity solid phase and also for solid-liquid separation of fibrous material.
However, the viscosity and hardness of the obtained filter cake are different, so that the control requirement of automatic discharging cannot be met by adjusting the running speed of the rotary drum and adjusting the angle and hardness of the blade.
Therefore, there is a need for an automatic discharging method and device for a scraper centrifuge and a scraper centrifuge, so as to solve the above technical problems.
Disclosure of Invention
The invention aims to provide an automatic discharging method and device of a scraper centrifugal machine and the scraper centrifugal machine, which can control the actual action of a scraper, so that the discharging process is continuous and automatic, manual intervention is not needed, and the production efficiency is greatly improved.
To achieve the purpose, the invention adopts the following technical scheme:
the automatic discharging method of the scraper centrifuge comprises the following steps:
when the rotary drum is unloaded in the rotating process, rotary drum operation parameters are obtained in real time, wherein the rotary drum operation parameters comprise rotary drum operation current or rotary drum rotation speed;
comparing the running current of the rotary drum with the protection current, or comparing the rotating speed of the rotary drum with the protection rotating speed, and determining whether the scraper needs to be retracted and the feeding amount is readjusted for discharging according to the comparison result.
As a preferable technical scheme of the automatic discharging method of the scraper centrifuge, comparing the running current of the rotary drum with the protection current or comparing the rotary drum rotating speed with the protection rotating speed, and determining whether the scraper is required to be retracted and the feeding amount is readjusted to discharge according to the comparison result comprises the following steps:
if the running current of the rotary drum is smaller than the protection current or the rotating speed of the rotary drum is larger than or equal to the protection rotating speed, the scraper does not retract and continues to work;
if the running current of the rotary drum is larger than or equal to the protection current or the rotating speed of the rotary drum is smaller than the protection current, the scraper withdraws the scraper and the feeding amount is readjusted to discharge.
As a preferable technical scheme of the automatic discharging method of the scraper centrifuge, the scraper retracting and readjusting the feeding amount for discharging comprises:
the scraper withdraws the scraper to the initial position and the effective rotation feeding times are called, and the scraper readjusts the feeding amount according to the effective rotation feeding times to rotate to the withdrawal point.
As a preferable technical scheme of the automatic discharging method of the scraper centrifuge, after the scraper retreats to the initial position, judging whether the running current of the rotary drum is smaller than the recovery current or whether the rotating speed of the rotary drum is larger than or equal to the recovery rotating speed, if so, the scraper is fed again and discharges the filter cake.
As a preferable technical scheme of the automatic discharging method of the scraper centrifugal machine, the rotation angle of the scraper or the rotation time of the scraper is controlled to adjust the feeding amount of the scraper.
As a preferable technical scheme of the automatic discharging method of the scraper centrifuge, when the scraper is discharged, the scraper gradually descends from top to bottom to discharge the filter cake; after the single scraper descends, judging whether the effective rotation feeding frequency is larger than or equal to the rotation setting frequency, if so, resetting and lifting the scraper and ending discharging, and if not, lifting the scraper and continuing to rotate and adjust the feeding quantity of the scraper to discharge.
As a preferable technical scheme of the automatic discharging method of the scraper centrifugal machine, when the scraper withdraws and the feeding amount is readjusted to discharge, the scraper does not move in the height direction.
As a preferable technical scheme of the automatic discharging method of the scraper centrifuge, the scraper retracting and readjusting the feeding amount for discharging comprises:
and acquiring the rotation angle or rotation time from the position of the last effective feeding amount of the scraper to the position of the current feeding amount, retracting the scraper to the position corresponding to the last effective feeding amount according to the rotation angle or rotation time, and rotating the scraper to the retracting point again according to the rotation angle or rotation time when the rotating speed of the rotary drum is greater than or equal to the recovery rotating speed or the running current of the rotary drum is smaller than the recovery current.
The invention also provides an automatic discharging device of the scraper centrifuge, which comprises:
the acquisition module is used for acquiring drum operation parameters in real time when the drum is unloaded in the rotating process, wherein the drum operation parameters comprise drum operation current or drum rotation speed;
the comparison judging module is used for comparing the running current of the rotary drum with the protection current or comparing the rotating speed of the rotary drum with the protection rotating speed, and determining whether the scraper needs to be retracted and the feeding quantity is readjusted for discharging according to the comparison result.
The invention also provides a scraper centrifuge, which works by using the automatic discharging method of the scraper centrifuge.
The invention has the beneficial effects that:
according to the comparison result, whether the rotary drum is jammed in the rotating process or not can be known, whether the scraper is required to retract and readjust the feeding amount to discharge is determined according to the comparison result, so that the current of a rotary drum motor is increased due to the mutual interference between a filter cake attached to the rotary drum and the scraper, the problem that the rotary drum still cannot freely rotate and cannot automatically discharge due to the increase of the current of the motor is prevented, and even the rotary drum motor burns out is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
Fig. 1 is a main flow chart of an automatic discharging method of a scraper centrifuge according to an embodiment of the present invention;
fig. 2 is a detailed flowchart of an automatic discharging method of a scraper centrifuge according to an embodiment of the present invention.
Fig. 3 is a block diagram of an automatic discharging device of a scraper centrifuge according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
In the prior art, the scraper centrifuge needs to automatically discharge, under the normal condition, the rotary drum of the centrifuge is in a rotating state in the discharging process, the scraper discharges the filter cake according to the set feeding amount, but the problem of stopping the machine to adjust the position of the blade still occurs in the discharging process in a mode of adjusting the angle and the hardness of the blade, and the requirement of automatic discharging cannot be met.
Therefore, the embodiment of the invention provides the automatic discharging method of the scraper centrifugal machine, which can control the actual action of the scraper, is continuous and automatic in discharging flow, does not need manual intervention, and greatly improves the production efficiency.
As shown in fig. 1, the automatic discharging method of the scraper centrifuge comprises the following steps:
s101, when the rotary drum is unloaded in the rotating process, acquiring rotary drum operation parameters in real time, wherein the rotary drum operation parameters comprise rotary drum operation current or rotary drum rotation speed;
the drum running current can be obtained by a motor controlling the rotation of the drum. The rotating speed of the rotary drum is obtained by adding a tachometer pan to actually detect the rotating speed of the rotary drum.
S102, comparing the running current of the rotary drum with the protection current, or comparing the rotating speed of the rotary drum with the protection rotating speed, and determining whether the scraper needs to be retracted and the feeding amount is readjusted to discharge according to the comparison result.
According to the comparison result, whether the rotary drum is jammed in the rotating process can be known, whether the scraper is required to retract and readjust the feeding amount to discharge is determined according to the comparison result, so that the current of the rotary drum motor is increased due to the mutual interference between a filter cake attached to the rotary drum and the scraper, the phenomenon that the rotary drum still cannot freely rotate and cannot automatically discharge due to the increase of the current of the motor is prevented, and even the rotary drum motor burns out is prevented.
Further, in some embodiments, comparing the drum operating current to the protection current, or comparing the drum speed to the protection speed, and determining whether the doctor blade needs to be retracted and the feed amount readjusted for discharging based on the comparison result includes:
if the running current of the rotary drum is smaller than the protection current or the rotating speed of the rotary drum is larger than or equal to the protection rotating speed, the scraper does not retract and continues to work; the drum running current is smaller than the protection current, or the rotating speed of the drum is larger than or equal to the protection rotating speed, which indicates that the drum rotates normally without interference with the scraper, and the discharging is normal at the moment.
If the running current of the rotary drum is larger than or equal to the protection current or the rotating speed of the rotary drum is smaller than the protection current, the scraper withdraws the scraper and the feeding amount is readjusted to discharge. The drum running current is greater than or equal to the protection current, or the drum rotating speed is less than the protection current, so that the condition that the drum rotates to be blocked is indicated, the drum is possibly interfered with a scraper, the problem that a drum motor is burnt easily occurs, and the cutter is required to be retracted and the feeding amount is required to be readjusted for discharging.
Further, retracting the doctor blade and readjusting the feed amount for discharging comprises: the scraper withdraws the scraper to the initial position and the effective rotation feeding times are called, and the scraper readjusts the feeding amount according to the effective rotation feeding times to rotate to the withdrawal point. The effective rotation feeding times are that after each feeding, the scraper can descend to the lowest point, the aim that the scraper can finish discharging at the current position is achieved, and when the scraper is at the current position, the condition of adjusting the feeding amount for a plurality of times possibly exists, therefore, the effective rotation feeding times of the scraper need to be determined, and the problem of unclean discharging caused by misjudgment is prevented.
In some embodiments, the drum operating current is compared to the recovery current, or the drum speed is compared to the recovery speed after the doctor blade is retracted, so that it can be judged that the reason for the jamming of the drum is caused by the interference of the doctor blade and the filter cake. After the scraper retreats to the initial position, judging whether the running current of the rotary drum is smaller than the recovery current or whether the rotating speed of the rotary drum is larger than or equal to the recovery rotating speed, if so, re-feeding the scraper and discharging the filter cake, and if not, keeping the scraper stationary. The scraper is fed again, so that the rotating speed of the rotary drum is recovered, the rotary drum is prevented from being forced to stop, the phenomenon that the action of the scraper cannot be continuous, and the position where the filter cake and the scraper interfere with each other can be discharged after the feeding position is adjusted, so that the condition that the discharging flow is discontinuous, and the repeated discharging is needed, and even the manual intervention is performed is avoided.
In this embodiment, the blade rotation angle or the blade rotation time is controlled to adjust the blade adjustment feed amount. For example, the thickness of the filter cake is 10mm, and the feeding amount of the scraper is adjusted for discharging the filter cake in three times, wherein the cutting amounts of the three times are 3mm, 3mm and 4mm respectively, the rotation angles of the scrapers are not completely the same each time, if calculated by time, the rotation time of the scrapers is different each time, but the rotation speed is the same, and all the cutting amounts of the three times can be obtained through calculation, and the detailed description of the specific calculation process is omitted.
It is also noted that when the scraper is unloading, the scraper gradually descends from top to bottom to unload the filter cake; after the single scraper descends, judging whether the effective rotation feeding frequency is larger than or equal to the rotation setting frequency, if so, resetting and lifting the scraper and ending discharging, and if not, lifting the scraper and continuing to rotate and adjust the feeding quantity of the scraper to discharge. Determining the number of effective rotational feeds can determine whether discharge is complete, thus preventing the drum from idling and wasting energy, and also preventing the drum from being scratched due to excessive rotation of the scraper.
In addition, when the scraper withdraws and the feeding amount is readjusted for discharging, the scraper does not move in the height direction. Therefore, the condition that the rotary drum needs to retract because of interference with the scraper is still caused in the later cutting process after the interference point between the scraper and the filter cake is missed in the descending process of the scraper is prevented.
Of course, in other embodiments, retracting the doctor blade and readjusting the feed amount for discharging includes: and acquiring the rotation angle or rotation time from the position of the last effective feeding amount of the scraper to the position of the current feeding amount, retracting the scraper to the position corresponding to the last effective feeding amount according to the rotation angle or rotation time, and rotating the scraper to the retracting point again according to the rotation angle or rotation time when the rotating speed of the rotary drum is greater than or equal to the recovery rotating speed or the running current of the rotary drum is smaller than the recovery current. That is, the scraper is not retracted to the initial position, but is rotated to the position when the effective feeding amount is adjusted in the previous time, so that the time for adjusting the feeding amount can be saved, and the efficiency for adjusting the feeding amount can be improved.
The control of the rotary drum and the scraper is specifically realized by a controller, the controller and the rotary drum motor control the rotary drum to rotate, in the embodiment, the controller can be a centralized or distributed controller, for example, the controller can be a single chip microcomputer or a plurality of distributed single chip microcomputers, and a control program can be run in the single chip microcomputer to further control each part to realize the functions of the single chip microcomputer. The doctor blade is operated by means of a hydraulic station control, which is well known to those skilled in the art, so that a detailed description is omitted here for the sake of brevity of the description.
As shown in fig. 2, the automatic discharging method of the scraper centrifuge comprises the following specific steps:
s201, rotating a rotary drum to perform unloading;
s202, rotating a scraper to adjust the feeding amount;
s203, the scraper descends at a constant speed and obtains drum operation parameters in real time, wherein the drum operation parameters comprise drum operation current or drum rotation speed;
s204, judging whether the running current of the rotary drum is greater than or equal to the protection current or whether the rotating speed of the rotary drum is less than the protection rotating speed; if yes, resetting the scraper and executing step S205, and if not, executing step S206;
s205, retracting the scraper, and judging whether the running current of the rotary drum is smaller than the recovery current or whether the rotating speed of the rotary drum is larger than or equal to the recovery rotating speed; if yes, go to step S206; if not, continuing to execute the step S205;
s206, rotating the scraper to a withdrawal point;
s207, the scraper descends to the lowest point;
s208, judging whether the effective rotation feeding times are greater than or equal to preset times, if yes, executing a step S209; if not, executing step S202;
s209, the scraper rotates to an initial position, ascends and finishes discharging.
In this embodiment, an automatic discharging device of a scraper centrifuge is provided, as shown in fig. 3, the device includes an acquisition module 301 and a comparison and judgment module 302, where the acquisition module 301 is configured to obtain, in real time, drum operation parameters when a drum performs discharging in a rotation process, where the drum operation parameters include a drum operation current or a drum rotation speed; the comparison and judgment module 302 is used for comparing the running current of the rotary drum with the protection current or comparing the rotary drum rotation speed with the protection rotation speed, and determining whether the scraper needs to be retracted and the feeding amount is readjusted for discharging according to the comparison result.
According to the comparison and judgment module 302, whether the drum is jammed in the rotating process can be known, whether the scraper is required to be retracted and the feeding amount is regulated again to discharge according to the comparison result, so that the phenomenon that the current of a drum motor is increased due to mutual interference between a filter cake attached to the drum and the scraper can be prevented, the phenomenon that the drum motor is burnt out due to the fact that the drum still cannot rotate freely due to the increase of the current of the motor can be prevented, and the problem that a scraper centrifuge fails and cannot normally run can be avoided.
Further, in this embodiment, the device further includes an effective rotation number determining module, where the effective rotation number determining module is configured to determine, after the single scraper descends, whether the effective rotation feeding number is greater than or equal to the rotation set number, if yes, reset the scraper to ascend and end discharging, and if not, ascend and continue rotating to adjust the feeding amount of the scraper to perform discharging. So that the normal unloading operation can be ensured, and the idle rotation of the rotary drum or the scratch of the rotary drum by the scraper can be prevented.
In this embodiment, the apparatus further includes a refeeding determining module, where after the doctor is retracted to the initial position, the refeeding determining module is configured to determine whether the running current of the drum is less than the recovery current, or whether the rotational speed of the drum is greater than or equal to the recovery rotational speed, and if so, the doctor refeeds and discharges the filter cake.
In an embodiment of the present invention, there is also provided a scraper centrifuge operating using the scraper centrifuge automatic discharging method provided in the embodiment of the present invention.
The scraper centrifuge according to the embodiment of the present invention has all the advantages and beneficial effects of the above embodiment, and will not be described herein.
Furthermore, the foregoing description of the preferred embodiments and the principles of the invention is provided herein. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. The automatic discharging method of the scraper centrifuge is characterized by comprising the following steps of:
when the rotary drum is unloaded in the rotating process, rotary drum operation parameters are obtained in real time, wherein the rotary drum operation parameters comprise rotary drum current or rotary drum rotating speed;
comparing the running current of the rotary drum with the protection current, or comparing the rotating speed of the rotary drum with the protection rotating speed, and determining whether the scraper needs to be retracted and the feeding quantity is readjusted to discharge according to the comparison result.
2. The automatic discharging method of a scraper centrifuge according to claim 1, wherein comparing the drum operation current with the protection current or comparing the drum rotation speed with the protection rotation speed, and determining whether the scraper needs to be retracted and the feeding amount is readjusted to discharge according to the comparison result comprises:
if the running current of the rotary drum is smaller than the protection current or the rotating speed of the rotary drum is larger than or equal to the protection rotating speed, the scraper does not retract and continues to work;
if the running current of the rotary drum is larger than or equal to the protection current or the rotating speed of the rotary drum is smaller than the protection current, the scraper withdraws the scraper and the feeding amount is readjusted to discharge.
3. The automatic discharging method of a scraper centrifuge according to claim 2, wherein the withdrawing of the scraper and readjusting the feeding amount to discharge comprises:
the scraper withdraws the scraper to the initial position and the effective rotation feeding times are called, and the scraper readjusts the feeding amount according to the effective rotation feeding times to rotate to the withdrawal point.
4. The automatic discharging method of a scraper centrifuge according to claim 3, wherein after the scraper is retracted to an initial position, it is judged whether the running current of the drum is smaller than the recovery current or whether the rotational speed of the drum is equal to or greater than the recovery rotational speed, and if so, the scraper is re-fed and the filter cake is discharged.
5. The automatic discharging method of a scraper centrifuge according to claim 1, wherein a scraper rotation angle or a scraper rotation time is controlled to adjust a scraper adjustment feed amount.
6. The automatic discharging method of a scraper centrifuge according to claim 1, wherein the scraper gradually descends from top to bottom to discharge the cake when discharging; after the single scraper descends, judging whether the effective rotation feeding frequency is larger than or equal to the rotation setting frequency, if so, resetting and lifting the scraper and ending discharging, and if not, lifting the scraper and continuing to rotate and adjust the feeding quantity of the scraper to discharge.
7. The automatic discharging method of a scraper centrifuge according to claim 1, wherein the scraper does not move in a height direction when the scraper is retracted and the feeding amount is readjusted for discharging.
8. The automatic discharging method of a scraper centrifuge according to claim 1, wherein the withdrawing of the scraper and readjusting the feeding amount to discharge comprises:
and acquiring the rotation angle or rotation time from the position of the last effective feeding amount of the scraper to the position of the current feeding amount, retracting the scraper to the position corresponding to the last effective feeding amount according to the rotation angle or rotation time, and rotating the scraper to the retracting point again according to the rotation angle or rotation time when the rotating speed of the rotary drum is greater than or equal to the recovery rotating speed or the running current of the rotary drum is smaller than the recovery current.
9. Automatic discharging device of scraper centrifuge, its characterized in that includes:
the acquisition module is used for acquiring the running current and the rotating speed of the rotating drum in real time when the rotating drum is discharged in the rotating process;
the comparison judging module is used for comparing the running current of the rotary drum with the protection current or comparing the rotating speed of the rotary drum with the protection rotating speed, and determining whether the scraper needs to be retracted and the feeding quantity is readjusted for discharging according to the comparison result.
10. A scraper centrifuge, characterized in that it is operated using the scraper centrifuge automatic discharge method according to any one of claims 1-8.
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| CN202310321146.5A CN116371618A (en) | 2023-03-29 | 2023-03-29 | Automatic discharging method and device of scraper centrifuge and scraper centrifuge |
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| CN202310321146.5A CN116371618A (en) | 2023-03-29 | 2023-03-29 | Automatic discharging method and device of scraper centrifuge and scraper centrifuge |
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| US5454777A (en) * | 1994-10-05 | 1995-10-03 | Glassline Corporation | Centrifugal separator apparatus with load sensing circuit for optimizing clearing cycle frequency |
| CN102615003A (en) * | 2012-03-15 | 2012-08-01 | 张家港市腾龙机械制造有限公司 | Directly-connected peeler centrifuge with upper motor |
| CN205361678U (en) * | 2016-03-07 | 2016-07-06 | 潍坊皓翔化工有限公司 | Dull and stereotyped discharge centrifuge down |
| CN113426589A (en) * | 2021-07-20 | 2021-09-24 | 广西盛誉糖机制造有限责任公司 | Scraper device for centrifuge |
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