CN116351581B - High-efficient horizontal spiral filter centrifuge of unloading - Google Patents
High-efficient horizontal spiral filter centrifuge of unloading Download PDFInfo
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- CN116351581B CN116351581B CN202310645160.0A CN202310645160A CN116351581B CN 116351581 B CN116351581 B CN 116351581B CN 202310645160 A CN202310645160 A CN 202310645160A CN 116351581 B CN116351581 B CN 116351581B
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- 239000007790 solid phase Substances 0.000 claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000007599 discharging Methods 0.000 claims abstract description 30
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- 238000012545 processing Methods 0.000 claims description 6
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- 101100441251 Arabidopsis thaliana CSP2 gene Proteins 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
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- 238000000926 separation method Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 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
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
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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
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/10—Control of the drive; Speed regulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Centrifugal Separators (AREA)
Abstract
The application relates to the technical field of centrifuges, in particular to a high-efficiency horizontal spiral discharging filtering type centrifuger which comprises a rotary drum, a material conveying spiral, a concentric double-shaft mechanism, a feeding mechanism, a discharging mechanism and a control panel, wherein the rotary drum and the material conveying spiral are respectively connected with the concentric double-shaft mechanism, the concentric double-shaft mechanism comprises a first concentric shaft, a second concentric shaft, a first variable frequency motor, a second variable frequency motor and a key phase sensor, the feeding mechanism comprises a feeding pipeline, a material pushing spiral, a third variable frequency motor and a rotating speed sensor, and the discharging mechanism comprises a discharging channel and a conveying belt. The application further determines the corresponding adjusting method of each component in the centrifugal process by comparing the actual water content of the solid phase with the preset water content, and can better control the water content of the solid phase and increase the intelligent degree of the centrifugal operation equipment.
Description
Technical Field
The application relates to the technical field of centrifuges, in particular to a high-efficiency horizontal spiral discharging filter type centrifuge.
Background
The horizontal spiral discharging filter type centrifugal machine is widely applied to the fields of chemical industry, petroleum, food, pharmacy, environmental protection, paper making, mining and the like, the horizontal spiral discharging filter type centrifugal machine drives a rotary drum and a concentrically installed material conveying spiral to rotate at the same direction and high speed through a motor, materials are continuously input through a feed inlet and uniformly distributed on a filter screen wall at the bottom end of the rotary drum, liquid phase substances pass through a filter screen and a filter hole of the wall of the rotary drum to be discharged through a liquid outlet under the action of centrifugal force, solid phase substances are trapped in the rotary drum to form a filter cake, the filter cake continuously moves from the small end of the rotary drum to the large end of the rotary drum under the action of the conical surface component of the centrifugal force and the thrust of the material conveying spiral, in the movement process, the centrifugal force is rapidly increased from the solid phase to the solid phase with high moisture content to the solid phase with low moisture content when the solid phase is discharged from the rotary drum, and the solid phase with low moisture content is discharged through a discharge groove.
The patent document of China patent publication No. CN104668109B discloses a filter aid feeder on a horizontal spiral unloading filter centrifuge, the centrifuge comprises a shell, a main shaft arranged in the shell and a rotary drum sleeved on the main shaft, the filter aid feeder is arranged on a feed end of the rotary drum, the filter aid feeder comprises a feed pipe inserted in the shell and a feed spiral arranged on a discharge end of the feed pipe, the feed spiral comprises a feed spiral pipe with an inner cavity, a rotary shaft inserted in the feed spiral pipe, helical blades fixedly arranged on the rotary shaft and axially distributed along the rotary shaft, the front end of the feed spiral pipe is inserted in the inner cavity of the rotary drum, a feed inlet communicated with the inner cavity of the feed pipe is formed in the upper pipe wall of the feed spiral pipe, the filter aid feeder further comprises a primary filter device arranged on the inner side of the lower pipe wall of the feed spiral pipe, and the primary filter device comprises a primary filter screen arranged below the rotary shaft; therefore, the filtering-assisting feeder on the horizontal spiral discharging and filtering centrifuge can only passively balance the average degree of feeding particles in unit time in the feeding process, and the problems that solid phase matters have large water content and can realize self-detection due to blocking of a rotary drum filter hole cannot be solved.
Disclosure of Invention
Therefore, the application provides a high-efficiency horizontal spiral discharge filter type centrifuge, which is used for solving the problem that the water content of a solid phase substance cannot be detected and adjusted by self in the prior art.
In order to achieve the aim, the application provides a high-efficiency horizontal spiral discharging filter type centrifugal machine, which comprises a rotary drum, a material conveying spiral, a concentric double-shaft mechanism, a feeding mechanism, a discharging mechanism and a control panel, wherein,
the rotary drum is connected with the concentric double-shaft mechanism, and is arranged in the shell of the centrifugal machine and used for bearing a screen and carrying out solid-liquid separation operation on materials by centrifugal force;
the material conveying screw is connected with the concentric double-shaft mechanism and is arranged at the inner side of the rotary drum and used for scraping out solid matters which are tightly adhered to the screen mesh by centrifugal force to a discharge hole;
the concentric double-shaft mechanism is respectively connected with the rotary drum and the material conveying screw and is used for respectively transmitting power to the rotary drum and the material conveying screw;
the feeding mechanism comprises a feeding pipeline, a pushing spiral, a third variable frequency motor and a rotation speed sensor, wherein the feeding pipeline is arranged above the rotary drum, the pushing spiral is arranged in the feeding pipeline and used for pushing materials out of the feeding pipeline, the third variable frequency motor is connected with the pushing spiral and used for providing power for the pushing spiral, and the rotation speed sensor is arranged on one side of the pushing spiral and used for detecting the rotation speed of the pushing spiral;
the discharging mechanism is arranged below the rotary drum and comprises a discharging channel and a conveying belt, the discharging channel is arranged at one side of a centrifuge shell at the large end of the rotary drum and is used for providing a preset discharging direction for solid-phase objects, the conveying belt is arranged below the discharging channel and is used for conveying the solid-phase objects discharged by the discharging channel to a preset position, the conveying belt also comprises a plurality of fans and a shooting detection unit, the fans are respectively arranged at two sides of the conveying belt and are used for airing the solid-phase objects, and the shooting detection unit is arranged above the conveying belt and is used for analyzing, identifying and judging the water content of the current solid-phase objects by utilizing machine vision;
the control panel comprises a display screen and a central control unit, the display screen is used for displaying the rotating speeds of the rotary drum, the material conveying screw, the material pushing screw, the conveyor belt and the fan, the central control unit is used for respectively and correspondingly adjusting the speed difference of the concentric double-shaft mechanism and the rotating speed of the third variable-frequency motor according to the comparison result of the water content of the current solid phase material and the preset water content, and correspondingly adjusting the second variable-frequency motor according to the vibration amplitude and the vibration frequency of the concentric double-shaft mechanism;
the concentric double-shaft mechanism comprises a first concentric shaft, a second concentric shaft, a first variable frequency motor, a second variable frequency motor and a key phase sensor, wherein the first concentric shaft is of a hollow structure and is arranged outside the second concentric shaft, the inner diameter of the first concentric shaft is tangential to the outer diameter of the second concentric shaft, the first concentric shaft is respectively connected with the rotary drum and the first variable frequency motor and is used for transmitting the moment of the first variable frequency motor to the rotary drum, the second concentric shaft is respectively connected with the material conveying screw and the second variable frequency motor and is used for transmitting the moment of the second variable frequency motor to the material conveying screw, and the key phase sensor is arranged on one side of the concentric double shafts and is used for detecting the vibration amplitude, the vibration frequency and the rotating speed of the concentric double shafts.
Specifically, the concentric double shaft includes a first concentric shaft and a second concentric shaft.
Specifically, the key phase sensor comprises a vibration probe and two key phase probes, wherein the vibration probe is used for detecting the relative vibration of the concentric double shafts, and the key phase probes are used for respectively detecting the rotating speeds of the first concentric shaft and the second concentric shaft.
The camera shooting detection unit comprises a camera, a memory and a processing chip, wherein the camera is used for carrying out image acquisition of a preset time interval on materials on the conveyor belt, the memory is used for storing an image comparison group, the image comparison group comprises solid-phase object multi-angle images with different water contents, and the processing chip is used for judging the water content of the current solid-phase object according to the comparison result of the images acquired by the camera and the corresponding comparison example in the image comparison group.
In the image acquisition of the material on the conveyor belt at preset time intervals, the preset time intervals are 1 second, the image acquisition detection unit obtains the water content corresponding to 5 images according to the respectively comparison result of the 5 images and the image contrast unit, and obtains the water content of the current solid-phase material according to the average value of the water content of the 5 images.
The central control unit judges whether the water content of the current solid phase substance meets the requirement of the preset water content according to the comparison result of the water content MC0 of the current solid phase substance and the preset water content MC on the conveyor belt, wherein MC comprises a first preset water content MC1 and a second preset water content MC2, MC1 is smaller than MC2,
when MC0 is less than MC1, the central control unit judges that the water content of the current solid phase substance meets the preset water content requirement;
when MC1 is more than or equal to MC0 and less than or equal to MC2, the central control unit judges that the water content of the current solid phase substance meets the preset water content requirement;
when MC0 is larger than MC2, the central control unit judges that the water content of the current solid phase substance does not meet the preset water content requirement.
The central control unit judges whether the current rotating speed of the first variable frequency motor can be increased according to the comparison result of the current rotating speed CSP1 of the first variable frequency motor and the maximum rotating speed MSP1 of the first variable frequency motor, wherein,
when CSP1 is less than MSP1, the central control unit judges that the current rotating speed of the first variable frequency motor does not reach the maximum rotating speed, and the current rotating speed of the first variable frequency motor can be increased;
when csp1=msp1, the central control unit determines that the current rotation speed of the first variable frequency motor has reached the maximum rotation speed, and the current rotation speed of the first variable frequency motor cannot be increased.
The central control unit judges whether the current speed difference needs to be regulated according to the comparison result of the current speed difference CSD of the current rotating speed CSP1 of the first variable frequency motor and the current rotating speed CSP2 of the second variable frequency motor and the preset critical speed difference PSD, judges whether the first variable frequency motor, the second variable frequency motor, the third variable frequency motor, the conveyor belt and the fan need to be regulated according to the comparison result of the CSP1 and the MSP1, wherein CSD=CSP1-CSP2, and CSD is more than 0,
when csd=psd, the central control unit determines that the current speed difference is equal to a preset critical speed difference, and does not increase the current speed difference any more;
if MC0 is less than MC1 and the current rotation speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotation speed and maintain the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object and controls the fan to stop rotating;
if MC0 is less than MC1 and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the third variable frequency motor to increase the current rotating speed and maintain the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to stop rotating;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed, maintains the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to rotate;
if MC1 is not less than MC0 and not more than MC2 at the moment and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls each variable frequency motor to maintain the current rotating speed and the current speed difference, controls the conveyor belt to maintain the current conveying speed of the solid-phase object and controls the fan to stop rotating;
if MC0 is larger than MC2 and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls the first variable frequency motor to increase the current rotating speed, maintains the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to increase the rotating speed;
if MC0 is larger than MC2 and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the third variable frequency motor to reduce the current rotating speed, reduces the material handling capacity, controls the conveyor belt to reduce the current conveying speed of the solid phase object, and controls the fan to increase the rotating speed until the water content of the current solid phase object meets the preset water content requirement;
when CSD is smaller than PSD, the central control unit judges that the current speed difference is lower than a preset critical speed difference, and the current speed difference can be adjusted;
if MC0 is less than MC1 and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed, the current rotating speed of the first variable frequency motor is increased to CSP1=MSP1, CSD=PSD, the conveyor belt is controlled to increase the current conveying speed of the solid-phase object, and the fan is controlled to stop rotating;
if MC0 is less than MC1 and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the second variable frequency motor to reduce the current rotating speed to CSD=PSD, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to stop rotating;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed, increases the current rotating speed of the first variable frequency motor to CSP1=MSP1 and CSD=PSD, controls the third variable frequency motor to increase the current rotating speed, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to rotate;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the second variable frequency motor to reduce the current rotating speed to CSD=PSD, controls the third variable frequency motor to increase the current rotating speed, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to rotate;
if MC0 is larger than MC2 and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls the first variable frequency motor to increase the current rotating speed, controls the second variable frequency motor to decrease the current rotating speed to CSD=PSD, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to increase the rotating speed;
if MC0 > MC2 and the current rotation speed of the first variable frequency motor cannot be increased, the central control unit controls the second variable frequency motor to reduce the current rotation speed to CSD=PSD, controls the conveyor belt to reduce the current conveying speed of the solid phase object, and controls the fan to increase the rotation speed.
The central control unit judges whether the current rotating speed of the third variable frequency motor can be reduced according to the comparison result of the current rotating speed CSP3 of the third variable frequency motor and the preset minimum rotating speed LSP3 of the third variable frequency motor, wherein,
when CSP3 is more than LSP3, the central control unit judges that the current rotating speed of the third variable frequency motor is greater than the minimum rotating speed, and the current rotating speed of the third variable frequency motor can be reduced;
when csp3=lsp3, the central control unit determines that the current rotation speed of the third variable frequency motor has reached the minimum rotation speed, and the current rotation speed of the third variable frequency motor cannot be reduced.
When the central control unit judges that the current rotating speed of the first variable frequency motor cannot be increased, CSD=PSD and CSP3=LSP 3, if MC0 is larger than MC2, the central control unit controls the conveyor belt to reduce the current conveying speed of the solid-phase object, controls the fan to increase the rotating speed, outputs an abnormal prompt to the display screen and stops centrifugal operation.
The central control unit correspondingly adjusts the second variable frequency motor according to the comparison result of the vibration amplitude CVA and the vibration frequency CVF detected by the key phase sensor and the preset vibration amplitude PVA and the preset vibration frequency PVF respectively, wherein,
when CVA is more than or equal to PVA, the central control unit judges that the current concentric double-shaft vibration amplitude exceeds a preset vibration amplitude standard, and possibly due to uneven solid phase material distribution of the screen, the second variable frequency motor is required to be controlled to increase the current rotating speed, and the screen material is discharged as soon as possible so as to maintain the dynamic balance of the rotary drum;
when CVA is less than PVA, the central control unit judges that the current concentric double-shaft vibration amplitude does not exceed the preset vibration amplitude standard, and the second variable frequency motor does not need to be adjusted;
when CVF is more than or equal to PVF, the central control unit judges that the current concentric double-shaft vibration frequency exceeds a preset vibration frequency standard, and possibly due to uneven solid phase material distribution of the screen, the second variable frequency motor is required to be controlled to increase the current rotating speed, and the screen material is discharged as soon as possible so as to maintain the dynamic balance of the rotary drum;
when CVF is smaller than PVF, the central control unit judges that the current concentric double-shaft vibration frequency does not exceed the preset vibration frequency standard, and the second variable frequency motor does not need to be adjusted.
Compared with the prior art, the centrifugal machine has the beneficial effects that firstly, the requirement of the centrifugal machine on internal tightness can be reduced by eliminating the differential mechanism in the centrifugal machine, so that the equipment cost is reduced, and the economic benefit is improved.
Further, through the concentric double-shaft mechanism that is equipped with, can make rotary drum and defeated material spiral's differential volume obtain better control and adjust, can carry out more accurate, more intelligent regulation to solid phase thing moisture content simultaneously, guarantee that solid phase thing moisture content is in the scope of predetermineeing all the time.
Secondly, the camera shooting detection unit can analyze and compare the water content of the solid-phase matters in the discharge port by utilizing machine vision, so that the water content of the solid-phase matters in the materials is obtained, and meanwhile, the influence of invalid resolution in the water content detected by the machine vision can be reduced, the detection effectiveness is improved, and the centrifugal operation is correspondingly regulated by adopting a method of comparing and averaging multiple images.
Thirdly, through the key phase sensor that is equipped with, can detect concentric biax's vibration frequency and vibration amplitude, and then when the uneven distribution of screen cloth surface solid phase thing leads to dynamic balance destruction in the rotary drum, can detect and to carrying out corresponding adjustment in the first time, alleviate deformation or/and damage to concentric biax that bring because the counter weight is unbalanced in the centrifugation process, increase equipment life, promote the productivity effect.
Fourth, through the pushing spiral that is equipped with at the charge-in pipeline, can reduce the material subsidence and bring the influence to charge-in passageway and feeding operation, and the accurate accuse feed volume simultaneously accomplishes that centrifugal operation technology each link is controllable adjustable.
Fifthly, the solid-phase objects can be conveyed to a preset place as soon as possible through the conveyor belt, and the solid-phase objects can be air-dried after the water content of the solid-phase objects exceeds a preset range through the fan arranged on the conveyor belt, so that the centrifugal yield of the materials is further increased, and the economic benefit is increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a high efficiency horizontal spiral discharge filter centrifuge according to an embodiment of the present application;
in the accompanying drawings: the device comprises a rotary drum 1, a material conveying screw 2, a concentric double-shaft mechanism 3, a feeding mechanism 4, a first concentric shaft 5, a second concentric shaft 6, a first variable frequency motor 7, a second variable frequency motor 8, a key phase sensor 9, a feeding pipeline 10, a material pushing screw 11, a third variable frequency motor 12, a rotating speed sensor 13, a blanking channel 14, a conveyor belt 15, a fan 16 and a shooting detection unit 17.
Detailed Description
In order that the objects and advantages of the application will become more apparent, the application will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present application, and are not intended to limit the scope of the present application.
It should be noted that, in the description of the present application, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, it should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, which is a schematic structural diagram of a high-efficiency horizontal spiral discharge filter centrifuge according to an embodiment of the present application, the embodiment includes a drum 1, a feed screw 2, a concentric double-shaft mechanism 3, a feed mechanism 4, a discharge mechanism and a control panel, wherein,
the rotary drum 1 is connected with the concentric double-shaft mechanism 3, and the rotary drum 1 is arranged inside the shell of the centrifugal machine and is used for bearing a screen and carrying out solid-liquid separation operation on materials by utilizing centrifugal force;
the material conveying screw 2 is connected with the concentric double-shaft mechanism 3, and the material conveying screw 2 is arranged at the inner side of the rotary drum 1 and is used for scraping out solid matters which are tightly adhered to the screen mesh by centrifugal force to a discharge hole;
the concentric double-shaft mechanism 3 is respectively connected with the rotary drum 1 and the material conveying screw 2 and is used for respectively transmitting power to the rotary drum 1 and the material conveying screw 2;
the feeding mechanism 4 comprises a feeding pipeline 10, a pushing spiral 11, a third variable frequency motor 12 and a rotating speed sensor 13, wherein the feeding pipeline 10 is arranged above the rotary drum 1, the pushing spiral 11 is arranged in the feeding pipeline 10 and is used for pushing materials out of the feeding pipeline 10, the third variable frequency motor 12 is connected with the pushing spiral 11 and is used for providing power for the pushing spiral 11, and the rotating speed sensor 13 is arranged on one side of the pushing spiral 11 and is used for detecting the rotating speed of the pushing spiral 11;
the discharging mechanism is arranged below the rotary drum 1 and comprises a discharging channel 14 and a conveying belt 15, the discharging channel 14 is arranged on one side of a centrifuge shell at the large end of the rotary drum 1 and is used for providing a preset discharging direction for solid-phase objects, the conveying belt 15 is arranged below the discharging channel 14 and is used for conveying the solid-phase objects discharged by the discharging channel 14 to a preset position, the conveying belt 15 further comprises a plurality of fans 16 and a shooting detection unit 17, wherein the fans 16 are respectively arranged on two sides of the conveying belt 15 and are used for airing the solid-phase objects, and the shooting detection unit 17 is arranged above the conveying belt 15 and is used for analyzing and identifying the images acquired by the shooting detection unit 17 by utilizing machine vision and judging the water content of the current solid-phase objects;
the control panel comprises a display screen and a central control unit, the display screen is used for displaying the rotating speeds of the rotary drum 1, the material conveying screw 2, the material pushing screw 11, the conveyor belt 15 and the fan 16, the central control unit is used for respectively and correspondingly adjusting the speed difference of the concentric double-shaft mechanism 3 and the rotating speed of the third variable-frequency motor 12 according to the comparison result of the water content of the current solid phase material and the preset water content, and correspondingly adjusting the second variable-frequency motor 8 according to the vibration amplitude and the vibration frequency of the concentric double-shaft mechanism 3;
the concentric double-shaft mechanism 3 comprises a first concentric shaft 5, a second concentric shaft 6, a first variable frequency motor 7, a second variable frequency motor 8 and a key phase sensor 9, wherein the first concentric shaft 5 is of a hollow structure and is arranged outside the second concentric shaft 6, the inner diameter of the first concentric shaft 5 is tangential to the outer diameter of the second concentric shaft 6, the first concentric shaft 5 is respectively connected with the rotary drum 1 and the first variable frequency motor 7 and is used for transmitting the moment of the first variable frequency motor 7 to the rotary drum 1, the second concentric shaft 6 is respectively connected with the material conveying screw 2 and the second variable frequency motor 8 and is used for transmitting the moment of the second variable frequency motor 8 to the material conveying screw 2, and the key phase sensor 9 is arranged on one side of the concentric double shaft and is used for detecting the vibration amplitude, the vibration frequency and the rotating speed of the concentric double shafts.
In the present embodiment, the concentric double shaft includes a first concentric shaft 5 and a second concentric shaft 6.
In the present embodiment, the key phase sensor 9 includes a vibration probe for detecting relative vibration of concentric double shafts, and two key phase probes for detecting rotational speeds of the first concentric shaft 5 and the second concentric shaft 6, respectively.
The camera detection unit 17 comprises a camera, a memory and a processing chip, wherein the camera is used for carrying out image acquisition of a preset time interval on materials on the conveyor belt 15, the memory is used for storing an image comparison group, the image comparison group comprises solid-phase object multi-angle images with different water contents, and the processing chip is used for judging the water content of the current solid-phase object according to the comparison result of the images acquired by the camera and the corresponding comparison example in the image comparison group.
In the image acquisition of the material on the conveyor belt 15 by the image pickup detection unit 17 at preset time intervals, the preset time intervals are set to be 1 second, the image pickup detection unit 17 obtains the water content corresponding to 5 images according to the respectively comparison result of 5 images and the image contrast unit which are continuously acquired, and obtains the water content of the current solid-phase material according to the average value of the water content of 5 images.
The central control unit judges whether the water content of the current solid phase substance meets the requirement of the preset water content according to the comparison result of the water content MC0 of the current solid phase substance and the preset water content MC on the conveyor belt 15, wherein MC comprises a first preset water content MC1 and a second preset water content MC2, MC1 is smaller than MC2,
when MC0 is less than MC1, the central control unit judges that the water content of the current solid phase substance meets the preset water content requirement;
when MC1 is more than or equal to MC0 and less than or equal to MC2, the central control unit judges that the water content of the current solid phase substance meets the preset water content requirement;
when MC0 is larger than MC2, the central control unit judges that the water content of the current solid phase substance does not meet the preset water content requirement.
The central control unit judges whether the current rotating speed of the first variable frequency motor 7 can be increased according to the comparison result of the current rotating speed CSP1 of the first variable frequency motor 7 and the maximum rotating speed MSP1 of the first variable frequency motor 7, wherein,
when CSP1 is less than MSP1, the central control unit judges that the current rotating speed of the first variable frequency motor 7 does not reach the maximum rotating speed, and the current rotating speed of the first variable frequency motor 7 can be increased;
when csp1=msp1, the central control unit determines that the current rotation speed of the first variable frequency motor 7 has reached the maximum rotation speed, and the current rotation speed of the first variable frequency motor 7 cannot be increased.
The central control unit judges whether the current speed difference needs to be adjusted according to the comparison result of the current speed difference CSD of the current rotating speed CSP1 of the first variable frequency motor 7 and the current rotating speed CSP2 of the second variable frequency motor 8 and the preset critical speed difference PSD, judges whether the first variable frequency motor 7, the second variable frequency motor 8, the third variable frequency motor 12, the conveyor belt 15 and the fan 16 need to be adjusted according to the comparison result of the CSP1 and the MSP1, wherein CSD=CSP1-CSP2, and CSD is more than 0,
when csd=psd, the central control unit determines that the current speed difference is equal to a preset critical speed difference, and does not increase the current speed difference any more;
if MC0 is less than MC1 and the current rotation speed of the first variable frequency motor 7 can be increased, the central control unit controls each variable frequency motor to increase the current rotation speed and maintain the current speed difference, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase object and controls the fan 16 to stop rotating;
if MC0 is less than MC1 and the current rotation speed of the first variable frequency motor 7 cannot be increased, the central control unit controls the third variable frequency motor 12 to increase the current rotation speed and maintain the current speed difference, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase object and controls the fan 16 to stop rotating;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor 7 can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed and maintain the current speed difference, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase objects and controls the fan 16 to rotate;
if MC1 is less than or equal to MC0 and less than or equal to MC2 and the current rotating speed of the first variable frequency motor 7 cannot be increased, the central control unit controls each variable frequency motor to maintain the current rotating speed and the current speed difference, controls the conveyor belt 15 to maintain the current conveying speed of the solid-phase object and controls the fan 16 to stop rotating;
if MC0 is greater than MC2 and the current rotation speed of the first variable frequency motor 7 can be increased, the central control unit controls the first variable frequency motor 7 to increase the current rotation speed and maintain the current speed difference, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase object and controls the fan 16 to increase the rotation speed;
if MC0 is larger than MC2 and the current rotating speed of the first variable frequency motor 7 cannot be increased, the central control unit controls the third variable frequency motor 12 to reduce the current rotating speed, reduces the material handling capacity, controls the conveyor belt 15 to reduce the current conveying speed of the solid phase object, and controls the fan 16 to increase the rotating speed until the water content of the current solid phase object meets the preset water content requirement;
when CSD is smaller than PSD, the central control unit judges that the current speed difference is lower than a preset critical speed difference, and the current speed difference can be adjusted;
if MC0 is less than MC1 and the current rotation speed of the first variable frequency motor 7 can be increased, the central control unit controls each variable frequency motor to increase the current rotation speed, to increase the current rotation speed of the first variable frequency motor 7 to csp1=msp1 and csd=psd, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase object, and controls the fan 16 to stop rotating;
if MC0 is less than MC1 and the current rotation speed of the first variable frequency motor 7 cannot be increased, the central control unit controls the second variable frequency motor 8 to reduce the current rotation speed to csd=psd, controls the conveyor belt 15 to increase the current conveying speed of the solid phase object, and controls the fan 16 to stop rotating;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at this time and the current rotation speed of the first variable frequency motor 7 can be increased, the central control unit controls each variable frequency motor to increase the current rotation speed, increases the current rotation speed of the first variable frequency motor 7 to csp1=msp1 and csd=psd, controls the third variable frequency motor 12 to increase the current rotation speed, controls the conveyor belt 15 to increase the current conveying speed of the solid phase object, and controls the fan 16 to rotate;
if at this time MC1 is less than or equal to MC0 and less than or equal to MC2 and the current rotation speed of the first variable frequency motor 7 cannot be increased, the central control unit controls the second variable frequency motor 8 to reduce the current rotation speed to CSD=PSD, controls the third variable frequency motor 12 to increase the current rotation speed, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase object, and controls the fan 16 to rotate;
if MC0 is greater than MC2 and the current rotation speed of the first variable frequency motor 7 can be increased, the central control unit controls the first variable frequency motor 7 to increase the current rotation speed, controls the second variable frequency motor 8 to decrease the current rotation speed to csd=psd, controls the conveyor belt 15 to increase the current conveying speed of the solid-phase object, and controls the fan 16 to increase the rotation speed;
if MC0 > MC2 and the current rotation speed of the first variable frequency motor 7 cannot be increased, the central control unit controls the second variable frequency motor 8 to reduce the current rotation speed to csd=psd, controls the conveyor belt 15 to reduce the current conveying speed of the solid-phase object, and controls the fan 16 to increase the rotation speed.
The central control unit determines whether the current rotation speed of the third variable frequency motor 12 can be reduced according to the comparison result of the current rotation speed CSP3 of the third variable frequency motor 12 and the preset minimum rotation speed LSP3 of the third variable frequency motor 12, wherein,
when CSP3 is more than LSP3, the central control unit judges that the current rotating speed of the third variable frequency motor 12 is greater than the minimum rotating speed, and the current rotating speed of the third variable frequency motor 12 can be reduced;
when csp3=lsp3, the central control unit determines that the current rotation speed of the third variable frequency motor 12 has reached the minimum rotation speed, and the current rotation speed of the third variable frequency motor 12 cannot be reduced.
When the central control unit determines that the current rotation speed of the first variable frequency motor 7 cannot be increased, csd=psd, and csp3=lsp3, if MC0 is greater than MC2, the central control unit controls the conveyor belt 15 to reduce the current conveying speed of the solid phase object, controls the fan 16 to increase the rotation speed, outputs an abnormal prompt to the display screen, and stops the centrifugation operation.
The central control unit correspondingly adjusts the second variable frequency motor 8 according to the comparison result of the vibration amplitude CVA and the vibration frequency CVF detected by the key phase sensor 9 and the preset vibration amplitude PVA and the preset vibration frequency PVF respectively, wherein,
when CVA is more than or equal to PVA, the central control unit judges that the current concentric double-shaft vibration amplitude exceeds a preset vibration amplitude standard, and possibly due to uneven solid phase material distribution of the screen, the second variable frequency motor 8 is required to be controlled to increase the current rotating speed, and the screen material is discharged as soon as possible so as to maintain the dynamic balance of the rotary drum 1;
when CVA is less than PVA, the central control unit judges that the current concentric double-shaft vibration amplitude does not exceed the preset vibration amplitude standard, and the second variable frequency motor 8 does not need to be adjusted;
when CVF is more than or equal to PVF, the central control unit judges that the current concentric double-shaft vibration frequency exceeds a preset vibration frequency standard, and possibly due to uneven solid phase material distribution of the screen, the second variable frequency motor 8 is required to be controlled to increase the current rotating speed, and the screen material is discharged as soon as possible so as to maintain the dynamic balance of the rotary drum 1;
when CVF is smaller than PVF, the central control unit judges that the current concentric double-shaft vibration frequency does not exceed the preset vibration frequency standard, and the second variable frequency motor 8 does not need to be adjusted.
Thus far, the technical solution of the present application has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present application, and such modifications and substitutions will be within the scope of the present application.
The foregoing description is only of the preferred embodiments of the application and is not intended to limit the application; various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A high-efficiency horizontal spiral discharging filter type centrifugal machine is characterized by comprising a rotary drum, a material conveying spiral, a concentric double-shaft mechanism, a feeding mechanism, a discharging mechanism and a control panel, wherein,
the rotary drum is connected with the concentric double-shaft mechanism, is arranged inside the shell of the centrifugal machine and is used for bearing a screen and carrying out solid-liquid separation operation on materials by utilizing centrifugal force;
the material conveying screw is connected with the concentric double-shaft mechanism and is arranged at the inner side of the rotary drum and used for scraping out solid matters which are tightly adhered to the screen mesh by centrifugal force to a discharge hole;
the concentric double-shaft mechanism is respectively connected with the rotary drum and the material conveying screw and is used for respectively transmitting power to the rotary drum and the material conveying screw;
the feeding mechanism comprises a feeding pipeline, a pushing screw, a third variable frequency motor and a rotating speed sensor, wherein the feeding pipeline is arranged above the rotary drum, the pushing screw is arranged in the feeding pipeline and used for pushing materials out of the feeding pipeline, the third variable frequency motor is connected with the pushing screw and used for providing power for the pushing screw, and the rotating speed sensor is arranged on one side of the pushing screw and used for detecting the rotating speed of the pushing screw;
the discharging mechanism is arranged below the rotary drum and comprises a discharging channel and a conveyor belt, the discharging channel is arranged on one side of a centrifuge shell at the large end of the rotary drum and is used for providing a preset discharging direction for solid-phase objects, the conveyor belt is arranged below the discharging channel and is used for conveying the solid-phase objects discharged by the discharging channel to a preset position, the conveyor belt also comprises a plurality of fans and a camera shooting detection unit, the fans are respectively arranged on two sides of the conveyor belt and are used for airing the solid-phase objects, and the camera shooting detection unit is arranged above the conveyor belt and is used for analyzing, identifying and judging the water content of the current solid-phase objects by utilizing machine vision;
the control panel comprises a display screen and a central control unit, wherein the display screen is used for displaying the rotating speeds of the rotary drum, the material conveying screw, the material pushing screw, the conveyor belt and the fan, and the central control unit is used for respectively and correspondingly adjusting the speed difference of the concentric double shafts and the rotating speed of the third variable frequency motor according to the comparison result of the water content of the current solid phase material and the preset water content and correspondingly adjusting the first variable frequency motor and the second variable frequency motor according to the vibration amplitude and the vibration frequency of the concentric double shaft mechanism;
the concentric double-shaft mechanism comprises a first concentric shaft, a second concentric shaft, a first variable-frequency motor, a second variable-frequency motor and a key phase sensor, wherein the first concentric shaft is of a hollow structure and is arranged outside the second concentric shaft, the inner diameter of the first concentric shaft is tangential to the outer diameter of the second concentric shaft, the first concentric shaft is respectively connected with the rotary drum and the first variable-frequency motor and is used for transmitting the moment of the first variable-frequency motor to the rotary drum, the second concentric shaft is respectively connected with the feeding screw and the second variable-frequency motor and is used for transmitting the moment of the second variable-frequency motor to the feeding screw, and the key phase sensor is arranged on one side of the concentric double shafts and is used for detecting the vibration amplitude, the vibration frequency and the rotating speed of the concentric double shafts;
the central control unit judges whether the current rotating speed of the first variable frequency motor is continuously increased according to the comparison result of the current rotating speed CSP1 of the first variable frequency motor and the maximum rotating speed MSP1 of the first variable frequency motor, wherein,
when CSP1 is less than MSP1, the central control unit judges that the current rotating speed of the first variable frequency motor does not reach the maximum rotating speed, and the central control unit increases the current rotating speed of the first variable frequency motor;
when csp1=msp1, the central control unit judges that the current rotating speed of the first variable frequency motor reaches the maximum rotating speed, and the central control unit does not lift the current rotating speed of the first variable frequency motor;
the central control unit respectively and correspondingly adjusts the second variable frequency motor according to the comparison result of the vibration amplitude CVA detected by the key phase sensor and the preset vibration amplitude PVA and the comparison result of the vibration frequency CVF and the preset vibration frequency PVF,
when CVA is more than or equal to PVA, the central control unit judges that the current vibration amplitude of the concentric double shafts exceeds the preset vibration amplitude standard, and the second variable frequency motor is required to be controlled to increase the current rotating speed;
when CVA is smaller than PVA, the central control unit judges that the current vibration amplitude of the concentric double shafts does not exceed the preset vibration amplitude standard, and the second variable frequency motor does not need to be adjusted;
when CVF is more than or equal to PVF, the central control unit judges that the current vibration frequency of the concentric double shafts exceeds a preset vibration frequency standard, and the second variable frequency motor is required to be controlled to increase the current rotating speed;
when CVF is smaller than PVF, the central control unit judges that the current vibration frequency of the concentric double shafts does not exceed the preset vibration frequency standard, and the second variable frequency motor does not need to be adjusted.
2. The efficient horizontal spiral discharge filter type centrifugal machine according to claim 1, wherein the camera detection unit comprises a camera, a memory and a processing chip, the camera is used for carrying out image acquisition at preset time intervals on materials on a conveyor belt, the memory is used for storing an image comparison group, the image comparison group comprises solid-phase object multi-angle images with different water contents, and the processing chip is used for judging the water content of the current solid-phase object according to the comparison result of the images acquired by the camera and the corresponding comparison examples in the image comparison group.
3. The efficient horizontal spiral discharge filter type centrifuge according to claim 2, wherein the image capturing detection unit performs image capturing at a preset time interval on the material on the conveyor belt, wherein the preset time interval is set to 1 second, the image capturing detection unit obtains the water content corresponding to 5 images according to the result of respectively comparing 5 continuously captured images with corresponding image comparison examples, and obtains the water content of the current solid-phase material according to the average value of the water content of 5 images.
4. The efficient horizontal screw discharge filter centrifuge according to claim 3, wherein the central control unit judges whether the water content of the current solid phase material meets the preset water content requirement according to the comparison result of the water content MC0 of the current solid phase material on the conveyor belt and the preset water content MC, wherein MC comprises a first preset water content MC1 and a second preset water content MC2, MC1 is smaller than MC2,
when MC0 is less than MC1, the central control unit judges that the water content of the current solid phase substance is lower than the preset water content requirement;
when MC1 is more than or equal to MC0 and less than or equal to MC2, the central control unit judges that the water content of the current solid phase substance meets the preset water content requirement;
when MC0 is more than MC2, the central control unit judges that the water content of the current solid phase substance exceeds the preset water content requirement.
5. The efficient horizontal screw discharge filter type centrifuge according to claim 4, wherein the central control unit determines whether the current speed difference needs to be adjusted according to a comparison result of the current speed difference CSD of the current rotation speed CSP1 of the first variable frequency motor and the current rotation speed CSP2 of the second variable frequency motor and a preset critical speed difference PSD, and determines whether each variable frequency motor, the conveyor belt and the fan need to be adjusted respectively according to a comparison result of CSP1 and MSP1, wherein csd=csp1-csp2, and CSD > 0, each variable frequency motor includes a first variable frequency motor, a second variable frequency motor and the third variable frequency motor,
when csd=psd, the central control unit determines that the current speed difference is equal to a preset critical speed difference, and does not increase the current speed difference any more;
if MC0 is less than MC1 and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed and maintain the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object and controls the fan to stop rotating;
if MC0 is less than MC1 and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the third variable frequency motor to increase the current rotating speed and maintain the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object and controls the fan to stop rotating;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed, maintains the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase objects, and controls the fan to rotate;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls each variable frequency motor to maintain the current rotating speed and maintain the current speed difference, controls the conveyor belt to maintain the current conveying speed of the solid-phase object and controls the fan to stop rotating;
if MC0 is larger than MC2 and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls the first variable frequency motor to increase the current rotating speed, maintains the current speed difference, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to increase the rotating speed;
if MC0 is larger than MC2 and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the third variable frequency motor to reduce the current rotating speed, controls the conveyor belt to reduce the current conveying speed of the solid phase object, and controls the fan to increase the rotating speed until the water content of the current solid phase object meets the preset water content requirement;
when CSD is smaller than PSD, the central control unit judges that the current speed difference is lower than a preset critical speed difference, and the current speed difference can be adjusted;
if MC0 is less than MC1 and the current rotation speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotation speed, increases the current rotation speed of the first variable frequency motor to csp1=msp1 and csd=psd, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to stop rotating;
if MC0 is less than MC1 and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the second variable frequency motor to reduce the current rotating speed to CSD=PSD, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to stop rotating;
if at this time MC1 is less than or equal to MC0 and less than or equal to MC2, and the current rotating speed of the first variable frequency motor can be increased, the central control unit controls each variable frequency motor to increase the current rotating speed, increases the current rotating speed of the first variable frequency motor to CSP1=MSP1, and CSD=PSD, controls the third variable frequency motor to increase the current rotating speed, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to rotate;
if MC1 is less than or equal to MC0 and less than or equal to MC2 at the moment and the current rotating speed of the first variable frequency motor cannot be increased, the central control unit controls the second variable frequency motor to reduce the current rotating speed to CSD=PSD, controls the third variable frequency motor to increase the current rotating speed, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to rotate;
if MC0 is greater than MC2 and the current rotation speed of the first variable frequency motor can be increased, the central control unit controls the first variable frequency motor to increase the current rotation speed, controls the second variable frequency motor to decrease the current rotation speed to csd=psd, controls the conveyor belt to increase the current conveying speed of the solid-phase object, and controls the fan to increase the rotation speed;
if MC0 is greater than MC2 and the current rotation speed of the first variable frequency motor cannot be increased, the central control unit controls the second variable frequency motor to reduce the current rotation speed to csd=psd, controls the conveyor belt to reduce the current conveying speed of the solid-phase object, and controls the fan to increase the rotation speed.
6. The efficient horizontal spiral discharge filter type centrifuge according to claim 5, wherein the central control unit determines whether the current rotation speed of the third variable frequency motor is continuously reduced according to a comparison result of the current rotation speed CSP3 of the third variable frequency motor and a preset minimum rotation speed LSP3 of the third variable frequency motor, wherein,
when CSP3 is more than LSP3, the central control unit judges that the current rotating speed of the third variable frequency motor is greater than the minimum rotating speed, and the central control unit reduces the current rotating speed of the third variable frequency motor;
when csp3=lsp3, the central control unit determines that the current rotation speed of the third variable frequency motor has reached the minimum rotation speed, and the central control unit does not reduce the current rotation speed of the third variable frequency motor.
7. The efficient horizontal spiral discharge filter centrifuge of claim 6, wherein when the central control unit determines that the current rotation speed of the first variable frequency motor cannot be increased, csd=psd, and csp3=lsp3, if MC0 > MC2, the central control unit controls the conveyor belt to reduce the current conveying speed of the solid phase object, controls the fan to increase the rotation speed, outputs an abnormal prompt to the display screen, and stops the centrifugation operation.
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