JPH0732844B2 - Rotating disk type liquid remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to sewer sludge, human waste sludge, marine product processing wastewater, slaughterhouse wastewater, food factory wastewater, and other liquid-containing sludge-like industrial waste. The present invention relates to a rotating disk type liquid removing device for performing dehydration.

<Prior Art> As a conventional rotary disc type dewatering (water) device, a large number of discs are mounted on a large number of rotary shafts that are horizontally and in parallel and adjacent to each other. It has a structure that rotates in the same direction with the outer peripheries of the disks alternately overlapping, and puts sludge-like processed material on the floor-shaped filter plate formed by the above-mentioned rotary plate, and rotates the rotary plate in the feed direction. It is known to filter or squeeze the processed material in the process of sending it in the discharge direction.

<Problems to be Solved by the Invention> The above dewatering device has many advantages such as small power, continuous automatic operation without vibration and noise, compact size, and stable dewatering capacity. Since the discs of the shafts alternately overlap in the lateral direction and rotate in the feed direction, the overlapped parts rotate in opposite directions.

As a result, the side surfaces of the discs generate frictional resistance, resulting in a large energy loss, large wear between the disc sliding contacts, and a gap between the disc sliding contacts that is a liquid passage gap, resulting in too narrow filtration. It has the drawback of being inefficient.

Since the disk is simply rotating, the collected matter that has been dehydrated to a certain extent loses its fluidity, causing slippage between the disk and the peripheral surface of the disk, resulting in poor delivery efficiency. .

<Means for Solving the Problems> In the apparatus of the present invention for solving the above-mentioned problems, firstly, the above-mentioned processed material is received in the casing 2 for introducing and discharging the sludge-shaped processed material and guided in the discharging direction. Further, a slit plate 4 having a large number of slits 7 is provided, and a plurality of crank shafts 8 arranged along the discharge direction of the processed material are pivotally supported below the slit plate 4, and the crank shaft 8 is provided with a crank. Axis 8
A plurality of discs 9 each having an outer circumference inserted in the slits 7 so that the peripheral surface thereof moves up and down on the upper surface of the slit plate 4 in accordance with the rotation of the discs in the feeding direction. A feature is that the slit plate 4 is used as a mechanism for filtering and separating a liquid component in the process of sending the liquid component to the discharge side by rotation.

Further, in addition to the above means, a belt conveyor 13 is provided on the slit plate 4 which is close to the upper surface of the slit plate 4 and rotates in the discharge direction of the processed material to collect and squeeze the slit plate 4 to remove liquid. A hot air supply unit (21) for drying hot air by blowing hot air from a vertical direction to a predetermined area on the discharge side of the dots or the slit plate 4 and the circular plate 9 and passing through the slit plate to dry collected matter after hot filtration. Each of the points is characterized by.

<Operation> A sludge-shaped liquid-containing treated material is put into the casing 2 and is received by the slit plate 4, and a large number of discs 9 whose peripheral surfaces are projected on the slit plate 4 form a crankshaft in the treated material discharge direction. By being eccentrically rotated by 8, the processed material is sent to the discharge side on the slit plate 4. In this process, the liquid component falls from the gap between the slit 9 and the circular plate 9 and is filtered, and the solid component in the processed product is separated and collected.

The belt conveyor 13 is provided according to the properties of the processed material and other conditions. The processed material moving on the slit plate 4 is pressed by the belt 17 from above to assist in the squeeze filtration and reliable feeding of the liquid component. Moreover, the processed product is discharged in the form of a cake that is easy to handle.

When the hot air supply unit 21 is provided above or below the extension of the slit plate 4 to send hot air, the collected matter on the slit plate 4'is dried and solidified and discharged.

<Embodiment> The embodiment row illustrated below will be described in detail. FIG. 1 is an overall cross-sectional view showing the principle structure of the device of the present invention, and the sludge-like liquid-containing treated material in the filtration device A is introduced from the introduction port 1. In the box-shaped casing 2, a slit plate 4 made of, for example, a 1.5 to 2 mm-thick stainless plate is supported by a support beam 6 so that it is substantially horizontal so as to divide it into upper and lower parts, or the outlet 3 side is slightly inclined. Has been. A large number of slits 7 having, for example, a width of 0.6 mm and a length of 65 mm, which are inserted through the outer periphery of a disc described later, are provided in the slit plate 4 in the lateral direction of about 1.0 to 1.5 mm (casing inner width of about 300 mm) and length of 85 mm. 10 pitches in the vertical direction
The holes are arranged side by side. The slits 7 are alternately shifted by 0.5 pitch in each row.

A crank shaft 8 eccentrically rotating about 5 mm vertically (a stroke amount of 10 mm) is rotatably provided laterally at a position close to the center position of the slits 7 in each row of the slit plate 4, and the crank shaft 8 is rotatably provided horizontally. A large number of discs 9 whose upper outer periphery is inserted into the slits 7 and project above the upper face of the slit plate 4 are mounted so as to rotate integrally, and a small diameter donut-shaped disc is provided between the discs 9. Spacers 11 are inserted so that each disk 9 is fixed in correspondence with the lateral pitch of each slit 7. The disk 9 has, for example, a plate thickness of 0.
4mm, outer diameter is about 75mm.

Since the discs 9 are simultaneously eccentrically rotated at a speed of 0.5 to 2 r.pm in each row in the discharge direction of the treated substances, the sludge-like treated substances put on the slit plate 4 are the discs of each column. While being lifted up from below on the peripheral surface of the slit plate 9, it is sent out toward the discharge port 3 along the upper surface of the slit plate 4. Reference numeral 10 is a drive sprocket fitted to the end of the crankshaft 8.

The sludge-like processed product moves on the slit plate 4,
Water and other liquid components are filtered downward from the front and rear ends of the slit 7 and the gap between the slit 7 and the circular plate 9 and discharged to the outside through the liquid discharge port 12, and the solid components collected on the slit plate 4 are circular. While being sent to the peripheral surface of the plate 9, it is sequentially filtered and dehydrated and discharged from the discharge port 3.

In the illustrated example, since the crankshafts 8 of all the examples are eccentrically rotated in the same phase, the entire circumferential surface of the disk 9 protruding and retracting on the slit plate 4 moves up and down at the same time. If you shift it by a certain degree from the beginning,
The elevating and lowering of each example of the peripheral surface of the disc 9 can be performed by a mechanism that changes in the feed direction while forming a waveform.

Reference numeral 13 is a belt conveyor installed as necessary so as to cover the upper surface of the slit plate 4, and the bottom surface of the endless belt 17 made of rubber or the like supported by the rollers 14 and 16 is formed on the slit plate 4 at the inlet 1. Side is about 50 mm, discharge port 3 side is about 10-20 m
The belt 17 is obliquely installed so as to maintain a distance of m, and a pressing roller 18 is axially supported inside the belt 17 on the outlet 3 side.

The belt 17 is driven by the driving roller 16 so that the lower side thereof moves in the processing object discharge direction and at a peripheral speed substantially equal to the feeding speed of the disk 9, and the bottom surface of the belt 17 and the upper surface on the slit plate 4 are driven. This is a mechanism in which the processed product is pressed and held between them, and further, the gap is gradually widened toward the discharge side to increase the pressing strength, and is squeezed and dehydrated to be sent out to the discharge port 3 side as a cake-like collected product. The outer peripheral surface of the belt 17 has an uneven surface 19 formed in a large number of ribs or protrusions in order to prevent slipping when slipping the sludge-like processed product.

At the end on the discharge port 3 side in FIG. 1, a drying device B as shown by a phantom line in FIG. 1 can be provided. The drying device B is provided with a hot air supply part 21 at the bottom, an exhaust port 22 at the top, a left end connected to the exhaust port 3 of the filtration device A, and a right end having a casing 24 having an exhaust port 23. .

In the casing 24, the feed mechanism including the slit plate 4 ', the disc 9', the crankshaft 8 ', and the like so as to be continuous from the filtering device A has the same structure and function as those of the filtering device A. A filter device A is provided on the slit plate 4.
The dehydrated or cake-shaped collected matter discharged from the pump is sent to the discharge port 23 side and discharged.

The collected matter has a mechanism of being dried and dehydrated by the hot air supplied and discharged from the hot air supply unit 21 toward the air outlet 22 in the discharge process. As a result, the collected matter dehydrated and discharged from the filtration device A is further dried by the drying device B, and is collected as a collected matter having a small amount of water or liquid. From the hot air supply unit 21, it is possible to mix and supply a gas having a chemical action such as a gas for deodorization or sterilization together with the hot air.

Since the filtering device A is small in size, a feed mechanism composed of the slit plate 4 and the circular plate 9 may be added in series in the horizontal direction or the vertical direction in order to increase the capacity, and the belt conveyor 13 is further required. In such a case, it may be added while adjusting the interval with the slit plate 4 as necessary, or may be extended in the feed direction.

The structure and dimensions of the other casings 2 and 24 are not limited to the examples shown in the drawings, and can be arbitrarily changed according to the properties of the processed object and other conditions, and the dimensions of the slit plate 4, the rotating plate 9 and the like can also be changed. It is possible.

<Effects of the Invention> According to the device of the present invention configured as described above, since there is no friction between the disks, the power loss due to the frictional resistance is small, and the prime mover and the transmission can be downsized. Similarly, since there is no contact between the discs, there is no wear on the side faces of the discs, and the conventional drawback of poor filtration efficiency due to the clearance between the discs is eliminated.

In addition, since the upper surface of the slit plate is flat, the collected material can be fed smoothly, the compression effect from the top is high, and the eccentric rotation of the disc eliminates the problem of feeding failure due to the slip between the collected material and the disc. is there.

In addition, since the structure is simple as compared with the conventional structure in which multiple rotating discs are superposed on the circumferential surface, the cost can be significantly reduced and the maintenance can be facilitated.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an overall sectional view showing the principle of the structure and operation of the device of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a sectional view in the direction of the feed axis. Is. 1: Inlet port, 2: Casing 3: Discharge port, 4, 4 ': Slit plate 7: Slit, 8, 8': Crankshaft 9: Disc, 12: Drain port 13: Conveyor, 17: Belt 21: Hot air supply part, 22: Exhaust port 24: Casing, B: Drying device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B30B 9/20 E C02F 11/12 D 7446-4D

Claims (3)

[Claims] 1. A slit plate (4) which receives the above-mentioned processed material and guides it in the discharging direction and which has a large number of slits (7) is provided in a casing (2) for introducing and discharging the sludge-shaped processed material. Below the slit plate (4), a number of crankshafts (8) arranged along the discharge direction of the processed material are pivotally supported, and the crankshaft (8) is provided in the feed direction of the crankshaft (8). A large number of discs (9) having outer peripheries inserted into the slits (7) are mounted on the slits (7) so that the peripheral faces of the slits (4) move up and down along with the rotation of the discs (9). ) The rotating disc type liquid removing device having a mechanism for filtering and separating the liquid component by the slit plate (4) in the process of sending the liquid to the discharge side by eccentric rotation. 2. A belt conveyor (13) which rotates in the discharge direction of the processed material in the vicinity of the upper surface of the slit plate (4) and squeezes the collected matter on the slit plate (4) to remove liquid. The rotary disc type liquid draining device according to claim 1, which is provided on the plate (4). 3. A hot air is sent from a vertical direction to a predetermined range on the processed product discharge side of the slit plate 4 and the circular plate (9), and the collected matter passing through the slit plate after the filtration is dried with hot air. The rotating disk type liquid removing apparatus according to claim 1, further comprising a hot air supply section (21).