KR101582073B1 - centrifugal deawaterer or thickener system - Google Patents

centrifugal deawaterer or thickener system Download PDF

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Publication number
KR101582073B1
KR101582073B1 KR1020150112280A KR20150112280A KR101582073B1 KR 101582073 B1 KR101582073 B1 KR 101582073B1 KR 1020150112280 A KR1020150112280 A KR 1020150112280A KR 20150112280 A KR20150112280 A KR 20150112280A KR 101582073 B1 KR101582073 B1 KR 101582073B1
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KR
South Korea
Prior art keywords
oil
pump
hydraulic
motor
hydraulic motor
Prior art date
Application number
KR1020150112280A
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Korean (ko)
Inventor
이기영
Original Assignee
이기영
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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
    • 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
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/02—Other accessories for centrifuges for cooling, heating, or heat insulating
    • 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
    • B04B9/02—Electric motor drives
    • 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
    • B04B9/06—Fluid drive
    • 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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  • Centrifugal Separators (AREA)

Abstract

Disclosed is a centrifugal dehydrator or centrifugal concentrator system including: an external case; a rotation container which is rotatably installed in the external case; a screw conveyor which is rotatably installed in the rotation container; a main hydraulic motor which is arranged on the outside of one end portion of the external case to rotate the rotation container; a differential speed hydraulic motor which is arranged on the outside of the other end portion of the external case and rotates a screw conveyor at a differential speed to have speed difference with respect to the rotation container; a first hydraulic pump which supplies oil to the main hydraulic motor through a first oil circulation line passing through an oil tank and the main hydraulic motor and recollects the oil from the main hydraulic motor to the oil tank; a second hydraulic pump which supplies the oil to the differential speed hydraulic motor through a second oil circulation line passing through the oil tank and the differential speed hydraulic motor and recollect the oil from the differential speed hydraulic motor to the oil tank; a first pump driving motor arranged for driving the first hydraulic pump; a second pump driving motor arranged for driving the second hydraulic pump; and a controller which controls the speed of the rotation container and the screw conveyor by controlling a flow amount supplied from the first hydraulic pump to the main hydraulic motor and a flow amount supplied from the second hydraulic pump to the differential speed hydraulic motor by controlling the first pump driving motor and the second pump driving motor.

Description

Centrifugal dehydrator or centrifugal concentrator system {centrifugal deawaterer or thickener system}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal dehydrator or a centrifugal concentrator system, and more particularly, to a centrifugal dehydrator or a centrifugal concentrator system. More particularly, the present invention relates to a centrifugal dehydrator or centrifugal concentrator system that uses a rotational force generated by driving a hydraulic motor, To a centrifugal dehydrator or a centrifugal concentrator system for rotationally driving a screw conveyor.

Centrifuges are used for purification, dehydration, concentration, sorting and washing of fine solids contained in various turbid liquids in accordance with a wide range of materials and various separation purposes throughout the industrial field. The conventional centrifugal separator comprises a bowl, a screw conveyor rotatably installed in the rotary kiln, an outer casing surrounding the outer periphery of the rotary kiln, main drive means for rotating the rotary kiln at high speed, Vehicle speed driving means for rotating the screw conveyor while adjusting the number of revolutions of the conveyor, and an electric control panel for controlling the main driving means, the vehicle speed driving means, and the like.

In this conventional centrifugal separator, the main drive means includes a main drive electric motor, and the motor shaft of the main drive electric motor is connected to one end of the drive shaft by a belt-pulley power transmission mechanism including a pair of pulleys and a belt Thereby rotating the spinning tradition at a high speed. The vehicle speed driving means includes a vehicle speed drive electric motor and a belt-pulley power transmission mechanism for transmitting the rotational force of the vehicle speed drive electric motor to the screw conveyor to rotate the screw conveyor.

In such a centrifugal separator, by rotating the rotor at high speed by the main drive electric motor and the power transmission mechanism connected thereto, centrifugal force is applied to the object to be fed into the rotor to rapidly precipitate the solids by the specific gravity difference between the liquid and the solid On the other hand, the screw conveyor is rotated by maintaining the rotational speed constant speed difference by the vehicle speed driving electric motor and the power transmission mechanism connected thereto, thereby transferring the solid matter precipitated on the inner surface of the rotating body to the solid matter discharge port.

However, conventionally, a vehicle electric motor is used as a driving source of a vehicle speed driving means for driving a screw conveyor by using a main electric motor as a driving source of a main driving means for driving a rotary wheel, which causes an excessive volume increase There is a problem in that economical efficiency is greatly lowered due to excessive electric energy and bad energy efficiency due to use of electric motors.

Korean Patent Publication No. 10-2015-0055944

On the other hand, the inventor of the present invention has proposed a technique of using a hydraulic motor as a driving source for driving the rotary shaft. However, since the electric motor is used as the driving source of the vehicle speed drive means, there still remains a problem of electric power and energy efficiency, variable control of the screw conveyor speed with respect to the rotation speed of the rotary shaft is not easy, There is a problem due to the high heat generated when the rotor is rotated at a high speed.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method and apparatus for rotating a screw conveyor using a rotary force generated by driving a hydraulic motor, The present invention provides a centrifugal separator system having a compact structure in which the number of revolutions of a screw conveyor can be easily changed with respect to a rotary kiln, the energy efficiency can be increased, the electric charge can be minimized, and the total volume is greatly reduced.

A centrifuge system according to an aspect of the present invention includes an outer case; A rotator rotatably installed in the outer case; A screw conveyor rotatably installed in the rotary kiln; A main hydraulic motor disposed outside the one end of the outer case to rotate the rotor; A vehicle speed hydraulic motor that rotates the screw conveyor at a vehicle speed so as to have a speed difference with respect to the rotational speed from the outside of the other end of the outer case; A first hydraulic pump for supplying oil to the main hydraulic motor through the first oil circulating line passing through the oil tank and the main hydraulic motor and for recovering oil from the main hydraulic motor to the oil tank; A second hydraulic pump for supplying oil to the vehicle speed hydraulic motor through a second oil circulation line passing through the oil tank and the vehicle speed hydraulic motor and for recovering oil from the vehicle speed hydraulic motor to the oil tank; A first pump driving motor provided for driving the first hydraulic pump; A second pump driving motor provided for driving the second hydraulic pump; And controlling the first pump driving motor and the second pump driving motor to control a flow rate supplied from the first hydraulic pump to the main hydraulic motor and a flow rate supplied from the second hydraulic pump to the vehicle speed hydraulic motor, And a controller for controlling the speed of the screw conveyor to rotate.

According to one embodiment, the first hydraulic pump and the second hydraulic pump are integrally integrated on both sides with the oil tank in the middle, and the first hydraulic pump and the second hydraulic pump form an oil unit And the oil tank disposed between the oil tank and the oil tank.

According to one embodiment, the centrifuge system further includes a cooling unit installed in the oil tank for cooling the oil pumped by the first hydraulic pump and the second pump.

According to one embodiment, the main hydraulic motor is connected to the rotating shaft by a belt-pulley power transmission mechanism so as to be able to transmit power, and the vehicle speed hydraulic motor is directly connected to the screw conveyor in a power transmitting manner, The controller controls the first pump drive motor and the second pump drive motor by an inverter.

According to an embodiment of the present invention, the apparatus further includes a hydraulic pressure sensor installed in the second oil circulation line, and the controller controls the second pump drive motor to vary the rotation speed of the screw conveyor by receiving the hydraulic pressure information measured by the hydraulic pressure sensor, To control the flow rate of the oil supplied to the vehicle speed hydraulic motor by the second hydraulic pump.

According to the present invention, the screw conveyor is rotationally driven by using the rotational force generated by driving the hydraulic motor, and the rotational force generated by driving the other hydraulic motor to rotate the screw conveyor, The number of revolutions of the conveyor can be easily changed, the energy efficiency can be increased, the electricity cost can be minimized, and the total volume can be greatly reduced, thereby realizing a centrifugal separator system having a compact structure.

1 is a configuration diagram showing a centrifuge system according to an embodiment of the present invention.
2 is a photograph showing the installation state of the actual main hydraulic motor of the centrifugal separator system shown in FIG.
3 is a photograph showing the installation state of the actual differential synchronous hydraulic motor (i.e., vehicle speed hydraulic motor) of the centrifugal separator system shown in FIG.
FIG. 4 shows a trial operation result table of a centrifugal separator system and an existing centrifugal separator system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings and the description thereof are intended to aid those of ordinary skill in the art in understanding the present invention. Accordingly, the drawings and description are not to be construed as limiting the scope of the present invention.

1 is a view illustrating a centrifuge system according to an embodiment of the present invention.

1, a centrifugal separator system according to an embodiment of the present invention includes an outer case 1 and a rotor 2 rotatably installed in the outer case 1, A screw conveyor 3 rotatably installed in the spinning machine 2 and a main hydraulic pressure control unit 4 disposed outside one end of the outer casing 1 for rotating the spinning wheel 2 at a predetermined speed, And a belt-pulley power transmission mechanism 5 connected directly to the screw conveyor 3 from the outside of the other end of the outer case 1 to rotate the screw conveyor 3 at a vehicle speed, And a motor (6).

The centrifugal separator system includes an oil unit 10 for driving the main hydraulic motor 4 and the vehicle speed hydraulic motor 6 with oil pressure, And a main hydraulic motor 4 for supplying oil to the main hydraulic motor 4 through a first oil circulation line L1 passing through the oil tank 11 and the main hydraulic motor 4, And a second oil circulation line (L2) via the oil tank (11) and the vehicle speed hydraulic motor (6), wherein the first oil pressure pump (12) And a second hydraulic pump 13 for supplying the oil to the hydraulic motor 6 and for recovering the oil from the vehicle speed hydraulic motor 6 to the oil tank 11.

The oil unit 10 includes a first pump drive motor M1 for driving the first hydraulic pump 12 and a second pump drive motor M2 for driving the second hydraulic pump 13, . At this time, both the first pump driving motor M1 and the second pump driving motor M2 are constituted by an inverter motor.

The centrifugal separator system inverter controls the first pump driving motor M 1 connected to the first hydraulic pump 12 and the second pump driving motor M 2 connected to the second hydraulic pump 13. The flow rate of the oil supplied to the main hydraulic motor 4 through the first oil circulation line L1 and the flow rate of the oil supplied to the vehicle speed hydraulic motor 6 through the second oil circulation line L2 , And consequently controls the rotation speed of the spinning machine (2) and the rotation speed of the screw conveyor (3), respectively. At this time, the controller 20 may be integrated into a control panel including an input unit such as a centrifuge's on / off and speed control buttons, and a display unit for displaying the operation state and power of the centrifuge.

The centrifugal separator system includes a hydraulic pressure sensor S installed in the second oil circulation line L2. The controller 20 receives the hydraulic pressure information measured by the hydraulic pressure sensor S, And controls the drive motor M2 and the second hydraulic pump 13 connected thereto so as to variably control the rotational speed of the vehicle speed hydraulic motor 6 within a predetermined range. Since the screw conveyor 3 is directly connected to the vehicle speed hydraulic motor 6, the speed is variably controlled within a predetermined range while maintaining the speed difference with the rotary wheel 2.

In the present embodiment, the oil unit 10 is constituted by integrally integrating the first hydraulic pump 12 and the second hydraulic pump 13 on both sides of the oil tank 11 in the middle. The first hydraulic pump 12 and the second hydraulic pump 13 commonly use the oil tank 11 disposed between them so that the first and second hydraulic pumps 12, (13) pumps oil from one oil tank (11) and supplies it to the main hydraulic motor (4) side and the vehicle speed hydraulic motor (6) side. An oil unit in which the first hydraulic pump and the second hydraulic pump are independently arranged and connected to different oil tanks can be considered. However, as described above, the first hydraulic pump 12, the second hydraulic pump 13 And the oil tank 11 interposed therebetween, it is possible to realize compactness of the entire system and greatly improve the economical efficiency.

As described above, the main hydraulic motor 4 is connected to the first hydraulic pump 12 through the first oil circulation line L1 to obtain rotational power by the first hydraulic pump 12, , And is dynamically connected to the rotor 2 by a belt-pulley synchronous transfer mechanism 5 comprising two pulleys and one belt laid across the two pulleys. The vehicle speed hydraulic motor 6 is connected to the second hydraulic pump 13 through the second oil circulation line L2 to obtain a rotational power by the second hydraulic pump 13 while the screw conveyor 3 ).

The main hydraulic motor 4 rotates the rotor 2 at a high speed (approximately 1000 to 6000 rpm), thereby applying a centrifugal force to the object to be processed introduced into the rotor 2 to rapidly move the solids by the difference in specific gravity between the liquid and the solids Precipitate. In this embodiment, the rotor 2 rotates at a constant speed while the rotational speed is set to about 1000 rpm. The vehicle speed hydraulic motor 6 is directly connected to the screw conveyor 3 to rotate the screw conveyor 3 while varying the speed within a range of approximately 2 to 50 rpm.

The rotational speed of the screw conveyor 3 varies according to a change in the load due to the object to be processed when the screw conveyor 3 rotates. The hydraulic pressure sensor S measures the oil pressure of the oil flowing through the second circulation line L2 in order to variably control the rotational speed of the screw conveyor 3 in accordance with the load change of the screw conveyor 3, Controls the second pump driving motor (M2) connected to the second hydraulic pump (13) based on the hydraulic pressure information provided by the hydraulic pressure sensor (S) to control the flow rate of the second pump driving motor The rotational speed of the rotor 6 can be adjusted.

On the other hand, the high-speed rotation of the main hydraulic motor 4 causes undesired temperature increase of the oil, which causes property changes such as viscosity of the oil. The oil whose temperature rises due to the high speed rotation of the main hydraulic motor 4 may be adversely affected not only by the operation of the main first hydraulic pump 12 but also by the operation of the second hydraulic pump 13 via the oil tank 11 have. To prevent this, the centrifuge system according to the present embodiment includes a cooling unit 19 for lowering the temperature of the raised oil. At this time, the cooling unit 19 may be disposed on the first oil circulation line L1 or the second oil circulation line L2 to cool the oil, but the first oil circulation line L1, It is preferable to cool the oil stored in the oil tank 11 by being disposed in the oil tank 11 connected to both the second oil circulation line L2.

 FIG. 2 is a photograph showing the installation state of the actual main hydraulic motor of the centrifugal separator system shown in FIG. 1, FIG. 3 is a view showing the installation of the actual differential synchronous hydraulic motor (i.e., vehicle speed hydraulic motor) FIG. 4 is a photograph of a test result of a centrifuge system according to an embodiment of the present invention and a conventional centrifuge system (comparative example).

From the trial operation result table shown in Fig. 4, the following results were confirmed.

First, in order to compare the trial operation results of the centrifugal separator system according to the embodiment of the present invention with a comparative example in which the charging characteristics are most similar (all of the main motor vehicle speed motors use electric motors), a power totalizer was installed, As shown in the figure, the centrifugal separator system of the present embodiment has remarkable power saving effect, and can be started without regular cleaning operation even after start-up, so that it is confirmed that the centrifugal separator system has good operation efficiency.

In the centrifugal separator system of the comparative example, when the flow rate is increased, the amount of the drug is excessively increased, but the centrifuge system of the present embodiment is increased in proportion to the amount of the input. The reason for this is that, in the case of the present embodiment, the rotation speed of the screw conveyor is correspondingly changed, so that it is possible to separate it to a desired concentration and thus the efficiency is good.

As a result of calculation of the power ratio based on the data shown in Fig. 4 (65 m3 per year)

Power ratio = power per hour x power ratio x 24 x 365 = 29.71 x 98.34 x 24 x 365 = 25,600,000 won ", "

Respectively.

  According to the embodiment of the present invention, the operation is more automated than in the conventional art, so that the working condition of the operator is improved and the change of the vehicle speed is automatically changed in accordance with the change of the physical properties.

In addition, it is possible to continuously operate without needing periodic (two or three times a month) cleaning due to clogging, and even when stopping (the existing stopping time is 1 hour 30 minutes, Is minimized.

1: outer case 2:
3: Screw conveyor 4: Main hydraulic motor
6: vehicle speed hydraulic motor 10: oil unit
11: Oil tank 12: First hydraulic pump
13: second hydraulic pump 20: controller

Claims (5)

An outer case;
A rotator rotatably installed in the outer case;
A screw conveyor rotatably installed in the rotary kiln;
A main hydraulic motor disposed outside the one end of the outer case to rotate the rotor;
A vehicle speed hydraulic motor that rotates the screw conveyor at a vehicle speed so as to have a speed difference with respect to the rotational speed from the outside of the other end of the outer case;
A first hydraulic pump for supplying oil to the main hydraulic motor through the first oil circulating line passing through the oil tank and the main hydraulic motor and for recovering oil from the main hydraulic motor to the oil tank;
A second hydraulic pump for supplying oil to the vehicle speed hydraulic motor through a second oil circulation line passing through the oil tank and the vehicle speed hydraulic motor and for recovering oil from the vehicle speed hydraulic motor to the oil tank;
A first pump driving motor provided for driving the first hydraulic pump;
A second pump driving motor provided for driving the second hydraulic pump; And
Controls the first pump driving motor and the second pump driving motor to control a flow rate supplied from the first hydraulic pump to the main hydraulic motor and a flow rate supplied from the second hydraulic pump to the vehicle speed hydraulic motor, And a controller for controlling a speed of the screw conveyor to rotate, wherein a first hydraulic pump and a second hydraulic pump are integrally integrated on both sides with the oil tank in the middle so as to constitute one oil unit, Wherein the pump and the second hydraulic pump commonly use the oil tank disposed therebetween. delete  The centrifugal separator system according to claim 1, further comprising a cooling unit installed in the oil tank for cooling the oil pumped by the first hydraulic pump and the second hydraulic pump. 2. The hydraulic excavator according to claim 1, wherein the main hydraulic motor is connected to the rotary shaft by a belt-pulley power transmission mechanism so as to be able to transmit power, and the vehicle speed hydraulic motor is directly connected to the screw conveyor in a power- Wherein the controller controls the first pump drive motor and the second pump drive motor by an inverter. The apparatus of claim 1, further comprising a hydraulic pressure sensor installed in the second oil circulation line, wherein the controller receives the hydraulic pressure information measured by the hydraulic pressure sensor and determines a rotation speed of the screw conveyor Wherein the second pump driving motor is controlled by an inverter so as to control the flow rate of oil supplied to the vehicle speed hydraulic motor by the second hydraulic pump.
KR1020150112280A 2015-08-10 2015-08-10 centrifugal deawaterer or thickener system KR101582073B1 (en)

Priority Applications (1)

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KR1020150112280A KR101582073B1 (en) 2015-08-10 2015-08-10 centrifugal deawaterer or thickener system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109045815A (en) * 2018-10-12 2018-12-21 西山煤电(集团)有限责任公司 Underground coal mine black water automatic separating apparatus
KR101990731B1 (en) * 2018-01-03 2019-06-18 이기영 drive system for centrifugal dehydrator or centrifugal concentrator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004089877A (en) * 2002-08-30 2004-03-25 Kubota Corp Centrifugal separator
KR20150055944A (en) 2013-11-14 2015-05-22 이기영 Centrifugation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004089877A (en) * 2002-08-30 2004-03-25 Kubota Corp Centrifugal separator
KR20150055944A (en) 2013-11-14 2015-05-22 이기영 Centrifugation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101990731B1 (en) * 2018-01-03 2019-06-18 이기영 drive system for centrifugal dehydrator or centrifugal concentrator
CN109045815A (en) * 2018-10-12 2018-12-21 西山煤电(集团)有限责任公司 Underground coal mine black water automatic separating apparatus
CN109045815B (en) * 2018-10-12 2024-03-22 西山煤电(集团)有限责任公司 Underground coal slime water automatic separation device for coal mine

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