JPS5927677B2 - Dehydration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dewatering device that separates solid and liquid by trapping a material to be dehydrated between a pair of running cloths and pressing it against a main drum with a press belt, and particularly relates to This invention relates to a dewatering device that makes it easy to attach and detach a belt.

The press belt of this type of dewatering device has a plurality of guide ports) and a tension roll that adjusts the pressing force of the press belt toward the main drum. was supported by both side plates.

By the way, press belts are generally made of elastic materials such as rubber1, so they stretch or bend after a certain period of use, making it necessary to replace them, but unlike endless furnace cloth, press belts cannot be replaced. It was extremely difficult.

In other words, endless kiln cloth can be easily attached and detached by inserting and removing the pins at the connection part, but since there is no such connection part in the plenish belt, it is necessary to remove one of the side plates that support each roll from the machine frame. The press belt must be replaced by inserting and removing it in the axial direction of the roll.

However, when the side plates are removed, one end of each roll hangs down and the center position is shifted, and the reality is that it takes half a day to a full day, including the work to remove the side plates, to put them back in their original, correct positions. , the drive must be stopped during that time.

In view of the problems of the conventional device, the present invention has been made with the object of providing a device that does not require removing the side plate of the machine frame when replacing the press belt. The other end of each roll for the press belt supported at one end is supported by an open outer plate having a contour that is approximately the same as or inside the running trajectory of the press belt, and the open outer plate and the machine frame are connected at the same time. The press belt is connected to the side plate by a connecting member located inside the press belt, so that the press belt can be inserted and removed in the axial direction of each roll from the open outer part of the open outer plate.

The invention will now be described with reference to the illustrated embodiments.

The basic components of this dewatering device are an endless lower cloth 10, an upper cloth 20, and an endless press belt 30.
The upper door cloth 20, the endless press belt 30, the three-way common guide roll 12, the upper door cloth 20, the endless press belt 30, the three-way common guide roll 13, and the main drum 14 are rotated. The belt is rotated between the three-party common guide roll 12 and the three-party common guide roll 13 and the main drum 14, and the endless press belt 30 is connected to a dedicated guide roll 31.
A hook is rotated between the tension roll 32, the guide roll 13 shared by the three parties, and the main drum 14.

These lower cloth 10, upper cloth 20 and press belt 30
When traveling along a part of the outer circumference of the main drum 14 in the direction of the arrow, the supply chute 1 is located in order from the lower layer to the upper layer.
The sludge (material to be dehydrated) 16 that is supplied onto the lower cloth 10 via the cloth 10 through the cloth 10 and then sandwiched between the cloth 20 and the cloth 20 is compressed by the pressing force of the press belt 30 to form liquid and solid matter (cake) 17. Separate.

18 is a scraper plate that separates the solid matter 17 on the lower door cloth 10 from the lower door cloth 10.

Among the above-mentioned rolls, the rolls 11, 12, etc. that are not involved in the running guide of the endless press belt 30 are all supported at both ends by the machine frame 1 or the side plates of the machine frame 1.
Therefore, the lower door cloth 10 and the upper door cloth 20 cannot be attached or detached in the axial direction of the roll.

However, the rolls involved in the running guidance of the endless press belt 30, that is, the guide roll 31 and the tension roll 32
and the two three-party common guide rolls 13 are supported at only one end by the machine frame 1 or one side plate 2 of the machine frame 1, respectively,
The other end is supported by the outer open plate 3.

The outer open plate 3 has a contour shape set along the running trajectory of the press belt 30, and the liquid receiver located inside the press belt 30 is connected to the one side plate of the machine frame 1 through the chute 4. It is connected to the.

Therefore, the outer open plate 3 maintains its integrity with the machine frame 1 with its outer side open, but in order to further increase its integrity with the machine frame 1, the main drum 14 is inserted through the reinforcing plate 5. It is connected to the support plate 6 on the outer open plate side.

This reinforcing plate 5 is removable with bolts or the like, and when removed, the area around the outer enclosure opening plate 3 is opened.

The tension roll 32 is connected to left and right guide rails 33 provided on the one side plate 2 of the machine frame 1 and the outer enclosure opening plate 3.
Both ends thereof are supported by each sliding block 34 which is slidable along.

The sliding blocks 34 on both sides are each connected to a piston rod 36 of a cylinder device 35 by a pin 37, and the cylinder i
The device 35 is pivotally attached via a pin 40 to a cylinder arm 39 which is rotatable about a pin 38 implanted in the machine frame 1 .

41 is a rotation operating lever for the arm 39; 42 is the arm 39;
The pin 38 is a stopper that normally holds the arm 39 in a horizontal position, and when the arm 39 is horizontal, the reaction force of the hydraulic cylinder device 35 is received by the pin 38.

Further, when the arm 39 is rotated in the direction of the arrow via the rotation operation lever 41, the hydraulic cylinder device 35 is rotated as shown by the chain line.
is tilted, and the tension roll 32 supported by the sliding block 34 retreats accordingly, causing the press belt 30 to loosen significantly.

Note that an auxiliary dewatering device 50 is provided below the guide rolls 13, 13 shared by the three parties.

In this device, eccentric portions 53 at both ends of an eccentric shaft 52 are supported by brackets 51 erected on both sides of the machine frame 1, and sleeves 54a each having swing levers 54 on both sides fixed to the eccentric shaft 52.
is fitted loosely, and a plurality of suppression rolls 55 that contact the lower door cloth 10 are rotatably supported on a shaft 55a passed between the swing levers 54, and the swing levers 54 are caused to swing up and down by an eccentric cam 56. This is what I did.

That is, the eccentric cam 56 is fixed to the rotating shaft 57,
It engages with a guide roll 58 provided at the free end of the swing lever 54.

Therefore, when the rotating shaft 57 is rotated via the sprocket 59, the swing lever 54 swings, and the pressing force of the suppression roll 55 against the lower door cloth 10 changes, and this fluctuating pressing force causes a gap between the lower door cloth 10 and the lower door cloth 20. The sludge 16 will be effectively pre-dehydrated.

Note that since the bracket 60 supporting the rotating shaft 57 is attached to the machine frame 1 via an adjuster bolt 61,
The distance between the swing lever 54 and the lower door cloth 10 on the free end side can be adjusted depending on the properties of the sludge 16.

Further, the eccentric shaft 52 can be rotated by a rotation operation lever 62, and when rotated, the height position of the shaft 52 changes, so that the same height adjustment can be made on the pivoting portion side of the swing lever 54.

63 is a fixed arm provided integrally with one eccentric portion 53 of the eccentric shaft 52; 64 is a fixing screw screwed into the arm 63;
Reference numeral 5 designates a plurality of fixing screw holes screwed into the bracket 51 into which the fixing screws 64 are screwed.

This dewatering device having the above configuration supplies oil or air to the cylinder device 35 with the cylinder device 35 and cylinder arm 39 positioned horizontally as shown in FIG. 1, moves the sliding block forward, and applies tension. When the roll 32 is advanced, a pressing force is applied to the endless press belt 30 toward the main drum 14 side.

Therefore, when the lower door cloth 10, the upper door cloth 20, and the press belt 30 are rotated in the direction of the arrow while supplying the sludge 16 to the supply chute 15, the sludge between the shutter cloths is compressed and the liquid permeates through the furnace cloth. Part is press belt 3
The solid content falls through the holes 30a of 0 and is finally separated from the lower door cloth 10 by the scraper plate 18.

The auxiliary dewatering device 50 dewaters the furnace cloth before it reaches the main drum 14, as described above.

When it becomes necessary to replace the endless press belt 30 after a certain period of use, the tension roll 32 is moved backward by the cylinder device 35, and the arm 39 is further rotated to tilt the cylinder device 35 as shown by the chain line. and in that state pin 37 (or (and) pin 40)
, and separate the sliding block 34 and piston rod 36.

Then, when the auxiliary plate 5 is removed, the entire outer periphery of the outer circumferential opening plate 3 is opened, so that the tension roll 32 is retracted and no tension is applied to the press belt 30. The belt 30 can be pulled out in the axial direction of the roll, that is, in the direction perpendicular to the plane of the paper in FIG.

A new endless press belt can be inserted between each roll in a manner that it wraps around the circumferential open plate 3, and when the cylinder device 35 and the auxiliary plate 5 are returned to their original positions, the replacement work is completed.

If the contour of the open envelope plate 3 is determined to be located approximately on the same path as the traveling locus of the endless press belt 30 or on the inner side thereof, the press belt can be replaced by the above-mentioned operation.

"Habo-same" means that the press belt 30 has a degree of freedom in deformation when the tension roll 32 is retracted, so the shape allows the press belt to be inserted and removed in the axial direction of the roll in consideration of this deformation. It is.

Further, in the above embodiment, the liquid receiver of the outer enclosure open plate 3 is connected to the one side plate 2 of the machine frame 1 by the chute 4, but it is connected to the one side plate 2 by another connecting member or by using another connecting member together. The connection scales are obvious.

If these connecting members can provide sufficient connection strength between the two, the reinforcing plate 5 is not necessarily necessary.

In summary, the present invention has one end of each roll for a press belt supported by a machine frame or one side plate of the machine frame, and the other end supported by an open outer plate, the open outer plate supporting the press belt when it runs. The press belt has a contour that is approximately the same as or inside the locus, and the outer open plate and the machine frame or one side plate of the machine frame are connected by a connecting member located inside the press belt. The rollers can be replaced by being inserted and removed in the axial direction of the rolls, and the axial position of each roll will not be disturbed during this replacement, so that the replacement work can be quickly and reliably performed.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of the dewatering device according to the present invention, and FIGS. 2, 3, and 4 are lines ■-■ and I-1 in FIG. 1, respectively. , a sectional view taken along the line IV-IV, and FIG. 5 is a view taken along the V arrow in FIG. 4. 1...Machine frame, 2...-side plate, 3...
... Surrounding open plate, 4 ... Liquid receiver is chute, 5 ... Reinforcement plate, 6 ... Support plate, 10 ... Lower door cloth, 13...
Three-party common guide roll, 14... Main drum,
16...Sludge (dehydrated material), 20...
・・Lot cloth, 30 ・・Endless press belt, 31
...Guidance roll, 32...Tension roll.

Claims (1)

[Claims] 1. The material to be dehydrated is held between a pair of furnace cloths, and the material is run along a part of the outer periphery of the main drum, and the furnace cloth is placed on the outside of the furnace cloth on the side of the main drum. In a dewatering device that runs a press belt that presses the press belt, one end of a plurality of guide rolls on which the press belt is hung and a tension roll that can move back and forth and apply pressure to the press belt toward the main drum are connected to the machine frame. Alternatively, the rolls are supported by one side plate of the machine frame, and the other ends of these rolls are supported by an open outer plate having a contour that is approximately the same as or inside the running locus of the press belt, and the open outer plate and the machine frame or one side plate of the machine frame are connected by a connecting member located inside the presspel. 2. The dewatering device according to claim 1, wherein the connection member between the open envelope plate and the machine frame or one side plate of the machine frame is a chute as a liquid receiver for receiving liquid exuding from the endless furnace cloth.