JP2003019445A - Centrifugal separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centrifugal separator for surely separating the object to be treated such as sludge into a solid and liquid. SOLUTION: This centrifugal separator is provided with a ring-shaped cylinder 44 where the object to be treated such as sludge is supplied, a centrifugally separating means for separating the object to be treated and a separated solid 13 discharging means and a separated liquid 12 discharging means. The cylinder 44 is rotated by the separated solid 13 discharging means. The solid 13 is peeled and discharged by using an air nozzle 52 by making good use of air pressure while the solid 13 is prevented from slipping by a projection 47 or a nonskid plate 46 fit to the inner wall 45 of the cylinder 44. The liquid 12 is discharged while being prevented from scattering by a separated liquid discharging guide 59 and a separated liquid discharging chute 54.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifuge for separating sludge or the like of a treated material into a solid matter and a separation liquid.

[0002]

2. Description of the Related Art As a conventional centrifuge, for example, a decanter is known, but in the centrifuge of this structure, the solid matter after centrifuging has a rotational speed slightly deviated from the rotational speed of the bowl. The solid matter was discharged with a screw.

[0003]

However, there is a problem that if the inner clearance between the inner surface of the bowl and the screw is delicate and too wide, the capability of discharging solids is reduced, and if it is too narrow, the wear of the outer circumference of the screw is accelerated. Therefore, it was not suitable for a feed that easily wears the outer circumference of the screw. An object of the present invention is to provide a centrifuge having a structure that does not require a screw and capable of discharging even solid matter that is easily sheared.

[0004]

According to the present invention, a ring-shaped cylinder 44 to which sludge or the like of a treated product is supplied, a centrifugal separation means for separating sludge or the like of the treated product, and a ring-shaped cylinder for discharging the separated liquid separated. Centrifugal separation characterized in that the separation liquid discharge guide 59 and the separation liquid discharge shoe 54 provided on the cylinder 44 are provided with means for preventing scattering, and in the solid matter discharge means, the ring-shaped cylinder 44 rotates. The above problems are solved by providing a machine.

The present invention provides a centrifuge characterized in that a protrusion 47 or an anti-slip plate 46 for preventing slipping of solid matter by a discharging means is provided on an inner wall 45 of a ring-shaped tube 44, thereby providing the above object. It has been resolved.

According to the present invention, air is used to remove solid matter by discharging means.
The above problem is solved by providing a centrifugal separator characterized in that the nozzle 52 is provided inside the ring-shaped tube 44.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. As shown in FIGS. 1 to 4, the centrifugal separator includes an outer frame 21, a support frame 41, a ring-shaped tube 44, and a drive motor.
The motor 22 for turning the motor 22 is provided.

The outer frame 21 is rotatably installed by supporting the support frame 41 with two upper and lower support bearings 26A and 26B.

A driving motor 2 attached to the outer frame 21.
Reference numeral 2 denotes an output pulley 23 which drives the drive-side pulley 25 via the V-belt 24 to drive the support frame 4 via the support frame bracket 42.
It is designed to drive 1.

Support roller 4 mounted on support frame 41
High-speed rotation side rollers 60 are provided on both sides for the purpose of transmitting a rotation torque to the ring-shaped cylinder 44 supported by 3.

The support frame 41 includes a support roller 43 and a drive roller.
For the purpose of eliminating the gap between the la 40 and the outer peripheral groove portion of the ring-shaped cylinder 44, a disc spring 62 or a coil spring is attached to the support frame fastening bolt 61 and tightened with a nut 63 so that the gap is always eliminated.

Support roller 4 mounted on support frame 41
3, the ring-shaped tube 44 is supported in a rotatable state by using the swing rotation fulcrum C11 shown in FIG. 3 as a fulcrum.

A turning motor 2 attached to the outer frame 21.
The output sprocket wheel 28 drives the drive sprocket wheel 29 through the chain 30 to rotate the turning pinion shaft 31 and drive the bevel gear 33 through the attached pinion bevel gear 32. .

The idle bevel gear 34 rotates relative to the opposing bevel gear 33 to reduce the bending stress of the turning pinion shaft 31.

A drive gear 36 attached to the bevel gear shaft 35 drives a meshed driven gear 38.

The torque transmitted to the roller shaft 39 rotates the drive roller 40 to rotate the ring-shaped cylinder 44 supported by the support roller 43.

A supply pipe 50 is provided so that sludge and the like of the processed material supplied through the rotatable swivel joint 49 is supplied to the inside of the ring-shaped tube 44. Supply pipe 5
0 is installed so as to be gradually separated from the center of high-speed rotation, and is installed so that the internal pressure is not generated in the supply pipe 50 by the centrifugal force.

The compressed air supplied from the rotary joint 51A passes through an air hole provided in the swivel pinion shaft 31, and an air pipe 55 is provided from the rotary joint 51B to the air nozzle 52.

The drive motor 22 and the swivel motor 27 are inverters whose rotational speeds can be controlled. The high-speed rotational speed and the swivel rotational speed can be selected according to the kind and condition of the material to be supplied. There is.

When the centrifugal force of the rotating ring-shaped tube 44 becomes unbalanced due to the supply and discharge of the processed material during operation, the vibration isolating rubber 58 absorbs the vibration and the machine body is smoothed. It is designed so that it can move freely and prevents the occurrence of abnormal vibration.

Next, the operation of this embodiment will be described. When the drive motor 22 is started during operation of the centrifuge, the output
The torque of the drive 23 is applied to the drive side pulley 2 via the V-belt 24.
5, the support frame 41 is rotated via the support frame bracket 42.

A high-speed rotation side roller 60 attached from the support frame bracket 42 transmits rotation by sandwiching the ring-shaped tube 44 from both sides.

Support roller 4 mounted on support frame 41
The ring-shaped cylinder 44 supported by 3 is rotated in the high-speed rotation direction 9 with the upper fulcrum D7 and the lower fulcrum E8 shown in FIG.

Next, when the turning motor 27 is started, the torque of the output sprocket wheel 28 is transmitted to the drive sprocket wheel 29 via the chain 30 and the turning pinion shaft 3
Rotate 1. The pinion bevel gear 32 attached to the turning pinion shaft 31 relatively rotates the bevel gear 33 and the idle bevel gear 34.

The torque of the bevel gear 33 is the bevel gear shaft 3
Driven gear 3 transmitted to and engaged with drive gear 36 via 5
Rotate 8.

The torque of the driven gear 38 is transmitted to the drive roller 40 via the roller shaft 39, and the ring-shaped tube 44 is rotated in the turning rotation direction 10 about the turning rotation fulcrum C11 shown in FIG.

Next, separation of sludge and the like of the treated product shown in FIG. 3 will be described. It is supplied from the supply pipe 50 to the processed material supply unit 2A and mainly moved to the right by centrifugal force to be primarily separated into a solid matter and a separation liquid. The solid matter 13 heavier than the separated liquid 12 is deposited on the right inner wall 45. The solid matter 13 rotates in the turning direction 10 of the ring-shaped cylinder 44 and moves to the left inner wall 45.
At this time, the anti-slip plate 46 or the protrusion 47 attached to the inner wall 45 functions to prevent the solid matter from slipping.

The solid matter 13 that has moved to the left inner wall 45 is secondarily separated from the solid matter 13 that has not been processed in the primary separation.
The solid matter 13 deposited on the left inner wall 45 is rotated in the rotation direction 10
It turns to and is scraped to the upper part. Also at this time, the anti-slip plate 46 or the protrusion 47 attached to the inner wall 45 functions to prevent the solid matter from slipping.

The solid matter 13 is separated from the inner wall 45 by the air pressure of the air nozzle 52 mounted inside the ring-shaped cylinder 44 at the upper portion where the centrifugal force is small, and is solidified from the support frame bracket 42. Then, it is discharged to the solid material fixing sheet 56 and sent to the solid material yard.

The separated liquid 12 is discharged from the left and right inner surfaces 48 by raising the liquid level by supplying the processed material. For the purpose of preventing scattering, the liquid is guided to a liquid separation guide 59 provided on the inner surface 48 of the ring-shaped tube 44, and is discharged to a liquid separation discharge 54 attached from the support frame bracket 42 and fixed to the liquid separation shoe. It is collected in 57 and sent to the separated liquid tank.

[0031]

As described above, according to the present invention, the screw 17 is not required to take out the solid matter deposited on the inner wall 45 of the ring-shaped tube 44, so that the feed material that promotes wear can be treated without any problem. I can do things. Further, since there is no necessary clearance between the screw and the rotating bowl in the conventional centrifuge decanter, it is possible to discharge the solid matter that is easily sheared. or,
In the present invention, since the processed material is supplied to the ring-shaped cylinder 44, centrifugal force can be reliably applied to the processed material without slippage.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of a centrifuge according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the centrifuge according to the embodiment of the present invention.

FIG. 3 is a feed separation diagram of a centrifuge according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line AA of the centrifugal separator according to the embodiment of the present invention.

[Explanation of symbols]

21 Outer frame 22 Drive motor 23 Output pulley 24 V belt 25 Drive side pulley 26A support bearing 26B support bearing 27 Rotating motor 28-output sprocket wheel 29 Drive sprocket wheel 30 chains 31 turning pinion shaft 32 pinion bevel gear 33 bevel gear 34 idle bevel gear 35 bevel gear shaft 36 drive gear 37 Support frame link 38 Driven gear 39 Roller axis 40 drive roller 41 Support frame 42 Support frame bracket 43 Support Roller 44 Ring cylinder 45 Inner wall 46 Anti-slip plate 47 protrusions 48 Inside 49 swivel joint 50 supply pipe 51A swivel joint 51B swivel joint 52 Air-Nozzle 53 Solid matter discharge shoe 54 Separated liquid discharge shoe 55 Air piping 56 Solid Fixing Suit 57 Separation Fixing Suit 58 Anti-vibration rubber 59 Separated liquid discharge guide 60 High-speed rotation side roller 61 Support frame tightening bolts 62 Disc spring 63 nuts

Claims (3)

[Claims] 1. A ring-shaped tube (44) to which sludge or the like of a treated material is supplied, a centrifugal separation means for separating sludge or the like of a treated object, and a ring-shaped tube (44) for discharging the separated liquid. Separated liquid discharge guide (59) and separated liquid discharge shoe (5
The centrifuge characterized in that 4) is provided with means for preventing scattering, and the ring-shaped tube (44) is rotated and rotated in the means for discharging solid matter. 2. A ring-shaped tube (44) having a projection (47) or a non-slip plate (46) for preventing solids from slipping by the discharging means.
Centrifuge according to claim 1, characterized in that it is provided on the inner wall (45) of the. 3. The centrifuge according to claim 1, wherein an air nozzle (52) is provided inside the ring-shaped tube (44) for removing solid matter by the discharging means.