KR101733079B1 - Decanter apparatus for centrifugally separating solid and liquid - Google Patents

Abstract

The present invention relates to a decanter device for centrifuging an object into solid and liquid water, comprising: a body (10) rotatably receiving an outer tube (11) on a central tube (33); A driving unit 20 installed in the main body 10 to apply a rotational force to the outer cylinder 11; A screw portion 30 having a screw in contact with the inner surface of the outer tube 11 on the inner tube 31 and rotating relative to the outer tube 11 in engagement with the driving portion 20; A solid separation part 40 installed to communicate with one end of the outer cylinder 11 and discharging the separated solid matter to the centrifugal impeller 42; And a liquid separator (50) installed to communicate with the other end of the outer cylinder (11) and discharging the separated liquid material to a separator.
Accordingly, the object is quickly and accurately separated into three phases of solid, liquid, and liquid based on the vertical screw, and deterioration of the detachment function due to abrasion is prevented, thereby maintaining good productivity for a long time in mass production.

Description

[0001] The present invention relates to a decanter apparatus for centrifugal separation,

The present invention relates to a decanter device, and more particularly, to a decanter device for solid-liquid centrifugal separation for separating an object to be treated into three phases of solid, liquid, and liquid based on a vertical screw.

A screw decanter type centrifuge is used for the purpose of dehydration, filtration, purification, concentration, and the like for the object to be treated which contains a relatively large amount of solids in various industrial fields. When the size of the object particle becomes small, a preprocessor such as a centrifuge type centrifuge may be used in combination. In any case, a method that can process large quantities of objects in succession in most production sites is preferred.

Related prior art documents include Korean Patent Publication No. 0945273 (Prior Art 1), Japanese Patent Laid-Open No. 2005-074375 (Prior Art 2), and the like.

According to the prior art document 1, there are provided a casing unit; An external bowl configured to be axially rotatable in the casing and configured to discharge sludge by rotation of the screw; A return tube formed on an outer surface of the inner screw to collect and separate rising water; And a driving unit for driving the ball and conveying screw of the solid-liquid separating unit. Accordingly, it is expected that the discharge of the supernatant is smoothly performed and the bubbles are prevented from being discharged.

According to the prior art document 2, there is provided an outer cylinder that rotates in a predetermined direction, a casing that covers the inner cylinder and the outer cylinder that rotate in the same direction in the outer cylinder, and an outlet for discharging centrifuged solid material is provided in the outer cylinder. A deposition preventing member for preventing the deposition of the solid material is provided at a position facing the deposition preventing member. Thus, an effect of preventing operation errors caused by sediments is expected.

However, it is difficult to quickly and accurately separate three phases of solid, liquid, and liquid by the above-described method, and deterioration of separation due to abrasion causes a problem that high productivity can not be expected when applied to mass production.

1. Korean Patent Publication No. 0945273 entitled "Centrifugal Concentration Device for High Concentration Organic Wastewater" (Open date: March 3, 2011) 2. Japanese Unexamined Patent Publication No. 2005-074375 entitled "Screw Decanter Type Centrifuge" (Open date: March 24, 2005)

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to quickly and accurately separate an object into three phases of solid, liquid and liquid based on a vertical screw, And to provide a decanter device for solid-liquid centrifuge for maintaining good productivity.

In order to achieve the above object, the present invention provides a decanter device for centrifuging an object into solid and liquid water, comprising: a body rotatably receiving an outer tube on a central tube; A driving unit installed on the main body to apply rotational force to the outer cylinder; A screw portion having a screw in contact with the inner surface of the outer tube on the inner tube and rotating relative to the outer tube in engagement with the driving portion; A solid separator provided to communicate with one end of the outer cylinder and discharging the separated solid matter to a centrifugal impeller; And a liquid separator provided so as to communicate with the other end of the outer cylinder and discharging the separated liquid material to a separator.

In the detailed construction of the present invention, the drive unit may cause relative rotation by connecting the casing and the driven plate to the outer cylinder and the inner cylinder, respectively, while keeping the central axis of the cyclic differential speed reducer fixed to the main body.

In the detailed construction of the present invention, the screw portion may include a pusher installed to adjust the contact pressure due to the axial displacement of the screw, and a generator accommodated in the main body to provide power to the pusher.

In the detailed construction of the present invention, the solid separating section is characterized in that solid matter is pulverized with a heating coil mounted on the outer surface of the outer cylinder, and a coin pressure is applied to the centrifugal impeller protruding from the end.

In the detailed construction of the present invention, the liquid separator includes a liquid-liquid separator and a liquid-liquid separator concentrically installed in the center pipe, and the separator performs separation corresponding to the level of the object by a centrifugal diffuser method.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to quickly and accurately separate an object into three phases of solid, liquid, and liquid on the basis of a vertical screw, and prevent deterioration of the separation function due to abrasion, thereby maintaining good productivity for a long time in mass production .

1 is a schematic view schematically showing the inside of a device according to the present invention;
Fig. 2 is a perspective view of the main part of the device according to the invention,
3 is a block diagram of a driving unit of a device according to the present invention.
4 and 5 are cross-sectional views showing the main part of the device according to the invention
6 is a partially enlarged view of the solid separating portion of the device according to the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention proposes a decanter device for centrifuging an object into solid and liquid water. The object to be handled in the fields of petrochemical, environment, medicine, food, etc. is a liquid state in which solid matter and liquid water are mixed. The decanter device is shown and described based on a vertical screw but is not necessarily limited thereto.

According to the present invention, the main body 10 rotatably accommodates the outer tube 11 on the central tube 33. The main body 10 has a closed cylindrical structure and has an outer cylinder 11 inside. The outer cylinder 11 forms a conical section having an inclination from the upper end to the lower end. The outer tube 11 is rotatably mounted on the center tube 33 together with a support base 12 coupled to the lower end. A discharge pipe 14 and discharge pipes 15 and 16 are provided on the bottom surface of the main body 10 and a powder discharge pipe 17 is provided upward from the side surface of the main body 10. The central tube 33 communicates with the lower inlet tube 14 through a hollow 33a formed in a part thereof.

On the other hand, the outer cylinder 11 of the main body 10 is based on a material having physical properties such as mechanical strength, chemical resistance, and heat resistance. In addition, it is preferable to coat the inner surface with a high hardness material such as ceramic (alumina).

In addition, according to the present invention, the driving unit 20 is installed in the main body 10 so as to apply a rotational force to the outer cylinder 11. The driving unit 20 is installed at the upper end of the main body 10 and simultaneously rotates the outer cylinder 11 and the inner cylinder 31 at a differential speed as described later. It is preferable that the driving source of the driving unit 20 uses an AFPM motor 21 capable of realizing a high energy density. 4 shows a state in which the rotor 21a of the AFPM motor 21 and the stator 21b are disposed at the upper end of the center pipe 33. [

According to the present invention, the screw portion 30 has a structure in which a screw that contacts the inner surface of the outer tube 11 is held on the inner tube 31 and rotated relative to the outer tube 11 in engagement with the drive portion 20 . The screw section (30) has a screw for conveying solid matter on the outer peripheral surface of the inner cylinder (31). The inner cylinder 31 has a structure in which a lower part is formed in a hollow and a supporting plate 32 is fixed in a lower end. The outer tube 11 and the inner tube 31 have the center tube 33 at the same center of rotation and are engaged with the driving unit 20 to transfer the solid matter upward while relatively rotating. The tip of the screw uses a material with high hardness and abrasion resistance and can be interchangeably used.

At this time, though not shown in the drawing, it is preferable that the screw of the screw portion 30 is in multiple contact with the inner surface of the outer tube 11. [ For example, if the outer edge of the screw is formed in two rows, it is advantageous to scrape the inner wall twice to minimize adhesion of the solid.

As described above, since the outer cylinder 11 is formed only by the inclined path excluding the straight path, unnecessary gap is not formed between the screw and the screw, so that the solid matter does not remain on the inner wall regardless of the type and physical properties of the object,

The drive unit 20 is provided with the casing 26 and the driven plate 28 in a state in which the center shaft 23 of the cycle differential speed reducer 25 is fixed to the main body 10, And is connected to the outer cylinder 11 and the inner cylinder 31 to cause relative rotation. 3, the cycle differential gear reducer 25 has a structure in which a disk 29 having N cyclodoid teeth is accommodated in the casing 26 and N + 1 roller pins 28a are arranged outside the disk 29 And receives the driven plate 28. When the center shaft 23, which is the input shaft, rotates in the normal operation, the disk 29 connected to the eccentric bearing 27 performs eccentric motion and drives the driven plate 28, which is the output shaft, in a decelerated state.

In the meantime, the cycle differential gear reducer 25 of the present invention fixes the center shaft 23 to the upper end of the center pipe 33, engages the casing 26 with the upper end of the outer cylinder 11, (31). The casing 26 of the cycle differential speed reducer 25 is engaged with the rotor 21a of the AFPM motor 21. [ The relative rotation of the outer cylinder 11 and the inner cylinder 31 is caused by the rotational force of the AFPM motor 21 in a state where the center shaft 23 is fixed. The speed difference of the relative rotation is determined by the number N of teeth of the differential speed reducer 25 and the like.

On the other hand, the cyclic differential speed reducer 25 applied to the present invention is not limited to Fig. 3, and a general form may be used. In this case, the casing 26 is applied as a ring gear having a pin on the inner surface, and the driven plate 28 is applied as an output shaft having a plurality of pins connecting the pair of disks 29.

4 and 5, the liquid level WL is formed vertically downward in the middle of the outer cylinder 11 while the outer cylinder 11 and the inner cylinder 31 rotate relative to each other, and the solid matter is fed upward along the screw And is sent to the powder discharge pipe 17 through the swirl chamber 41 described later.

The screw portion 30 includes a pusher 35 installed to adjust the contact pressure due to the axial displacement of the screw portion, a generator 35 accommodated in the main body 10 to supply power to the pusher 35, (36). Since the screw of the screw portion 30 is in contact with the inner surface of the outer cylinder 11, the function of conveying the solid body is inevitably accompanied by the progress of the wear. Therefore, it is important to maintain the contact pressure of the screw constant by using the pressurizer 35 operated by the power supply of the generator 36. The pressurizer 35 is installed between the step 33b of the central tube 33 and the support plate 32 of the inner tube 31 using a pneumatic or electric drive type. The pneumatic / hydraulic system may be composed of a hydraulic pump, a cylinder, and a piston, and the electric drive system may be constituted by a solenoid or an actuator. The generator 36 generates a coil provided on the support base 12 and a magnet provided on the inner surface of the body 10 in correspondence thereto. The pusher 35 is provided with a communication unit for wirelessly transmitting / receiving a control signal. A controller (not shown) is installed on the outer surface of the main body 10 or at a position adjacent to the outer surface of the main body 10, and controls the pressurizer 35 and the generator 36 with an established algorithm.

At this time, the pusher 35 may alternatively or concurrently be constituted by an elastic force applying method and an axial pressure applying method which do not require the power source of the generator 36.

According to the present invention, the solid separating unit 40 for discharging the separated solid matter to the centrifugal impeller 42 is installed to communicate with one end of the outer cylinder 11. [ The solid separating section 40 includes a swirl chamber 41 provided horizontally adjacent to the upper end of the outer cylinder 11 and a centrifugal impeller 42 accommodated in the swirl chamber 41 in a state of being coupled to the outer cylinder 11 Respectively. The centrifugal impeller 42 of FIG. 2 is illustrated by twelve blades, and the centrifugal impeller 42 of FIG. 6 is illustrated by six blades. In either case, the centrifugal impeller 42 is interlocked with the outer cylinder 11 to centrifugally move the solid matter and send it to the powder discharge pipe 17. That is, the swirl chamber 41 and the centrifugal impeller 42 perform the function of a centrifugal blower.

In addition to preventing unnecessary accumulation of the solid content on the conveyance path by the air blowing function, the inside of the main body 10 is maintained in the vacuum pressure state, so that the rotation resistance of the outer cylinder 11 can be reduced.

In the detailed construction of the present invention, the solid separating portion 40 is formed by pulverizing solid matter with a heating coil 45 mounted on the outer surface of the outer cylinder 11, and compressing the air by means of a centrifugal impeller 42 having an end protruding And then discharging it additionally. The heating coil 45 is preferably closely adhered to the upper side of the outer circumferential surface of the outer tube 11 in terms of thermal efficiency but may be supported on the inner surface of the body 10 in a state of being slightly spaced from the outer tube 11 for ease of wiring. The blade of the centrifugal impeller 42 has an electric deflector 43 whose end portion protrudes in the rotating direction. This structure is advantageous for scraping off and separating the solids adhering to the inner surface of the swirling chamber 41 or for generating and discharging the air pressure.

Thus, the cake-shaped solid matter to be conveyed upward by the screw section 30 is crushed while being dried at a high temperature by the heating coil 45, is introduced into the swirling chamber 41 through the plurality of nozzles, and then sent to the centrifugal impeller 42 ). ≪ / RTI >

On the other hand, by providing the exciter 47 on the outer surface of the powder discharge pipe 17 for discharging the solid matter, it is possible to prevent the solid matter from being deposited on the inner surface.

According to the present invention, the liquid separator (50) for discharging the separated liquid material to the separator is installed to communicate with the other end of the outer cylinder (11). The liquid separator 50 accommodates the path of the discharge pipes 15 and 16 along with the charging pipe 14 on the liquid container 51 which is coupled to the lower end of the supporting table 12 of the outer tube 11. [ The liquid container 51 constitutes a rotating body together with the support base 12, the outer cylinder 11 and the inner cylinder 31 on the upper side. An air bearing 37 and a sealing ring 38 are provided at the upper and lower ends of the rotating body. The air bearing 37 is rotated in the state of being floated by air to improve the durability. The seal 38 uses a material having abrasion resistance and high elasticity.

The liquid separator 50 includes a liquid-liquid separator 55 and a liquid-liquid separator 56 which are concentrically provided in the center pipe 33. The separators 55 and 56 are connected to the center- And the separation corresponding to the water level of the object is performed in the method. The solid matter is conveyed upward by the rotation of the screw section 30 and the liquid material falls downward to form a vertical water level WL in the liquid container 51. [ The liquid-liquid separator 55 is taken at a position adjacent to the water level WL and discharged to the light liquid discharge pipe 15 through a liquid path concentrically provided on the outer peripheral surface of the central pipe 33. The liquid-liquid separator 56 is taken at a position deeper than the water level WL and discharged to the liquid-liquid discharge pipe 16 through a medium-liquid path concentrically provided outside the liquid-liquid path. The diffuser system uses a plurality of vanes arranged in a circumferential direction to suck fluid in a centrifugal direction. The liquid and the heavy liquid which are centrifuged due to the difference in specific gravity are collected and discharged to the separators 55 and 56 of the core diffuser type, respectively.

At this time, it is preferable to install the centrifugal separator 53 on the inside of the support table 12 at the lower end of the screw. The centrifugal separator shafts 53 are provided with a plurality of flow paths formed parallel to the inclined direction so that the fine particles are transferred to the upper screw by the centrifugal force. Accordingly, the purity of the liquid and the heavy liquid discharged to the separators 55 and 56 can be increased.

In operation, the object to be introduced into the inlet pipe 14 is first separated into a solid matter and a liquid material by the screw section 30, and the solid material is heated with dehydration and discharged from the powder discharge pipe 17 in a powder state And the liquid material collected in the liquid container 51 is discharged by the separators 55 and 56 as a liquid and a heavy liquid. The pressurizer 35 maintains the reliability of the separating operation by keeping the contact pressure of the screw constant at all times.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: main body 11: outer tube 14: input tube
15: Light liquid discharge pipe 16: Medium liquid discharge pipe 17: Powder discharge pipe
20: driving unit 21: AFPM motor 23:
25: Cycle differential gear reducer 26: Casing
28: driven plate 29: disk 30: screw portion
31: inner tube 33: center tube 35:
36: generator 37: air bearing 38: sealing
40: solid separation section 41: swirl chamber 42: centrifugal impeller
43: full bobbin 45: heating coil 47: exciter
50: liquid separator 51: liquid container 53: centrifugal separator
55: liquid-liquid separator 56:

Claims (5)

A decanter device for centrifuging an object into solid and liquid water, comprising:
A main body 10 rotatably receiving the outer tube 11 on the central tube 33;
A driving unit 20 installed in the main body 10 to apply a rotational force to the outer cylinder 11;
A screw portion 30 having a screw in contact with the inner surface of the outer tube 11 on the inner tube 31 and rotating relative to the outer tube 11 in engagement with the driving portion 20;
A solid separation part 40 installed to communicate with one end of the outer cylinder 11 and discharging the separated solid matter to the centrifugal impeller 42; And
And a liquid separator (50) installed to communicate with the other end of the outer cylinder (11) and discharging the separated liquid material to a separator,
The screw unit 30 includes a pusher 35 installed to regulate the contact pressure due to axial displacement of the screw unit and a generator 36 accommodated in the body 10 to provide power to the pusher 35,
The solid separating unit 40 is characterized by powdering the solid material with a heating coil 45 mounted on the outer surface of the outer cylinder 11 and discharging the solid material with the centrifugal impeller 42 having the end protruded, A centrifugal separator for centrifugal separation. The method according to claim 1,
The drive unit 20 is configured to move the casing 26 and the driven plate 28 to the outer cylinder 11 and the inner cylinder 11 while maintaining the center shaft 23 of the cyclic differential speed reducer 25 fixed to the main body 10, 31) so as to induce a relative rotation. delete delete The method according to claim 1,
The liquid separator 50 includes a liquid-liquid separator 55 and a liquid-liquid separator 56 concentrically installed in the center pipe 33. The separators 55 and 56 are adapted to correspond to the level of the object by the centrifugal diffuser method And a separation is performed by a centrifugal separator.

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