JPS6013759B2 - rotating filter bed - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in rotary hearth bodies.

As a measure to improve the processing capacity of rotary biofilters that treat wastewater and sewage using aerobic microorganisms, various proposals have been made to increase the contact surface area by increasing the size of the rotary hearth body of rotary biofilters. .

However, when the rotating bed body is enlarged, the inflow of air to the rotating center is obstructed, and anaerobic microorganisms are generated in this area, resulting in a disadvantage that the treatment capacity is reduced and a bad odor is generated. Furthermore, if there are large changes in the properties of treated water such as wastewater or sewage, the balance with the oxidizing ability of aerobic microorganisms will be lost, resulting in a decrease in treatment efficiency. The object of the present invention is to provide a rotary hearth body that can solve the above-mentioned drawbacks.

In order to achieve the above object, the present invention forms the end face shape of the hearth block into a quadrilateral obtained by symmetrically juxtaposing right scalene triangles with their hypotenuses as the axis of symmetry, and rotates the hearth block. The rotary hearth body is arranged around a shaft with a gap interposed in the radial direction, and the hearth block is attached to the rotating shaft via a support member that can adjust the gap.

The present invention will be described below with reference to drawings of embodiments thereof.

Reference numeral 1 denotes a hearth block with a water passage gap made of laminated flat plates or uneven plates, etc., and the end face 2 of the hearth block 1 has the same right-angled scalene triangle △ABC and △DBC with the hypotenuse BC. Quadrilateral A obtained by symmetrical juxtaposition as axis of symmetry
It has a BDC shape.

When the angle of the tip C is set to 450 degrees, when the hearth block 1 is arranged around the rotating shaft 3 with the tip C centered, the end face shape of the rotary hearth body becomes a regular octagon. 4 is a gap that is radially interposed between adjacent hearth blocks 1, 1 along a line passing through the center circle of the rotation axis or along a line eccentric from the center, forming the gap. The opposing surfaces of adjacent hearth blocks 1, 1 are parallel to each other.

Reference numeral 5 denotes a plurality of sets of disks fixed to the rotating shaft 3, and the distance between the disks 5, 5 in each rope is set to the length along the rotating shaft 3 of the hearth block 1.

A guide member 6 is fixed to the outer surface of the disk 5, perpendicular to each radial gap 4 and with a slight gap between them.

Reference numeral 7 denotes a fixed support punch in which a horizontal piece 8 and a vertical piece 9 are orthogonal to each other in an L-shaped cross section, and the base of the horizontal piece 8 is perpendicular to the guide member 6 in the vicinity of the end of each guide member 6, and the base of the horizontal piece 8 is perpendicular to the guide member 6 near the end of each guide member 6. It is attached to the outside surface.

The length from the center of the rotating shaft 3 to the tip of the fixed support village 7 is equal to both sides AC of the quadrilateral ABDC of the end face 2 of the hearth block.
, is slightly longer than the length of DC. 10 is 1 grain
This is a movable support punch in which a vertical piece 1 and a vertical piece 12 are perpendicular to an L-shaped cross section, and can move on a guide member 6 while maintaining a state parallel to a fixed support village 7.

In order to position and fix the movable support village 10 to the guide part village 6, the movable support village 10 is provided with a guide piece 13 at its lower end that can slide on the guide member 6, Piece 1
A suitable number of plying holes 14 into which fixing bolts are inserted are provided across 3 and 3. Vertical piece 9 of fixed support punch 7 and movable support village 1
Guide elongated holes 15, 16 are provided at approximately the center and above of the vertical piece 12 of 0.
is provided, and a guide elongated hole 1 is provided above the other pieces 8 and 11.
7 is provided. Reference numeral 18 denotes a connection village that connects the lower parts of the vertical pieces 9 of the corresponding fixed support villages in a pair of disks 5, 5 and the lower parts of the vertical pieces 12 of the movable support punch 10, respectively.

19 is the middle frame and the upper frame of 2 rivers, and each is a hearth block.

It is formed into a frame shape that surrounds the four circumferences near the center and above of the Tsuku 1, and the corners have ears 2 that protrude in the longitudinal direction.
1,22. Bolt holes 2 are provided in the ears 21 and 22.
There are 3,24. By inserting bolts into the bolt holes 23 and the guide elongated holes 15, and through the bolt holes 24 and the guide elongated holes 16 and tightening them, the middle frame 19 and the upper frame 20 are fixed to the fixed support village 7 and the movable support village 10. We respect them over and over again. Reference numeral 25 denotes a presser punch for preventing the hearth block 1 inserted into the space formed as described above from falling off, and has two sides perpendicular to the L shape and has bolt holes 26 at both ends. ing.

By inserting bolts into the bolt holes 26 and the guide elongated holes 17 and tightening them, the hearth block 1 is arranged with gaps 4 in the radial direction around the rotating shaft 3, and the fixed support village 7 and It can be attached to the rotating shaft 3 via a support member that can adjust the gap 4 and is made up of a movable support punch 10. In the rotating hearth body assembled as described above, in order to adjust the gap 4 between the hearth blocks, remove the bolts inserted through the bolt holes 26 and the guide elongated holes 17, remove the presser plate 25, Remove hearth block 1.

Next, loosen the nuts of the bolts connecting the middle frame 19 and the upper frame 20 with the fixed support punch 7 and the movable support punch 10, and move the middle frame 19 and the upper frame 20 along the guide slots 15 and 16, respectively. When the fixing bolt inserted between the guide piece 13 of the movable support punch 10 and the guide member 6 is removed, the movable support punch 10 remains parallel to the fixed support village 7 via the guide piece 13. It becomes possible to slide on the guide member 6. Therefore, after adjusting the distance between the movable support punch 10 and the fixed support 7 by sliding the movable support punch 10 as appropriate, the fixing bolt is inserted into the positioning hole 14 and tightened.

As the movable support punch 10 slides, the middle frame 19 and the upper frame 20 move the bolts inserted into the bolt holes 23 and the guide elongated holes 15 and the bolts inserted into the bolt holes 24 and the guide elongated holes 16, respectively. After moving along the guide slots 15 and 16, the bolts are tightened, and the hearth block 1 is fixed to the fixed support village 7, the movable support ladder 10, the connection village 18, and the middle frame 19.
, into the space formed by the upper frame 20 and the like, and attach the presser punch 25. Through the above operations, gaps 4 between adjacent hearth blocks are formed in the radial direction around the rotating shaft 3.
can be adjusted. To adjust the gap 4, in addition to the above-mentioned operation procedure, replace the hearth block with a hearth block having a different length of the rotation radius of the rotary hearth body, that is, the length of the long diagonal line BC in the quadrilateral ABDC of the hearth block end face 2. According to the movable support punch 10, middle frame 19, upper frame 2
0. The presser foot 25 may be adjusted. Since the shape of the end face 2 of the hearth block is a quadrilateral ABDC obtained by symmetrically juxtaposing right scalene triangles with their hypotenuses as the axis of symmetry, L-shaped steel can be used for the holding village 26, and
When attaching the presser mallet 25, no special jig is required, and attachment and detachment operations can be easily performed.

Furthermore, compared to the triangular end face which has the same radius of rotation as the radius of rotation BC and has the same central angle as the central angle <ACD, the quadrilateral shape of the present invention As is clear from FIG. 5, the end face has a large contact area. As is clear from the above description, the present invention provides a hearth block in which the end face of the bed block is formed into a quadrilateral obtained by symmetrically juxtaposing right scalene triangles with their hypotenuses as the axis of symmetry. The hearth block is arranged with a gap in the radial direction around the rotation axis, and the hearth block is attached to the rotating shaft via a support member that can adjust the gap. By adjusting and widening the gap in the rotary hearth, air can easily enter the center of the rotary hearth, which can prevent anaerobic microorganisms from forming in this area, which in turn can increase the size of the rotary hearth. is possible.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an end view of the upper half of the rotary hearth body, Fig. 2 is an exploded perspective view of the main parts, and Fig. 3 is a section taken along line m-m in Fig. 1. FIG. 4 is a schematic diagram of an example of how to prepare the hearth block material, and FIG. 5 is a comparison diagram of the contact area of the end surfaces. 1... Hearth block, 2... Hearth block end face, 3...
... Rotating shaft, 4 ... Gap, 5 ... Disk, 6 ... Guide member, 7 ... Fixed support village, 8 ...・Horizontal piece, 9...Vertical piece, 10...Movable support village, 11...Horizontal piece, 12...Vertical piece, 13...
...Guidance piece, 14...Position hole, 15,1
6, 17... Guide slot, 18... Connecting punch, 19... Middle frame, 20... Upper frame, 21, 22
・・・・・・Ear part, 23, 24・・・・Bolt hole, 25
...Oshiemura, 26...Bolt hole. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 A filter bed block whose end face is formed into a quadrilateral obtained by symmetrically juxtaposing right scalene triangles with their hypotenuses as an axis of symmetry is arranged with gaps in the radial direction around the axis of rotation. 1. A rotary filter bed body, characterized in that the filter bed block is mounted on the rotating shaft via a support member that can be arranged and that can adjust the gap.