JP3212319B2 - Residue cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning sewage generated when sewage is screen-treated in a sewage treatment facility such as a sewage treatment plant, and more particularly to an apparatus for washing sewage in a washing drum. And prevent short circuit flow of the residue in the washing drum, thereby improving the washing effect.Furthermore, the transfer of the residue from the outer drum to the dewatering screen drum can be carried out smoothly. Regarding what was done.

[0002]

2. Description of the Related Art Conventionally, this type of residue cleaning apparatus is provided with a washing drum having a rotator made of a rubber ball and the like, which is rotatable with the outer drum and provided in a rotatably mounted outer drum. At the outlet side of the washing cylinder, a dewatering screen cylinder that rotates together with the outer cylinder is provided (for example, Japanese Patent Publication No.
0-51852, Japanese Utility Model Application Laid-Open No. 61-106348).

[0003] Therefore, when the residue is introduced from one end side (entrance side) of the washing drum, the residue is washed even if it is disturbed by the rotation of the rotating element accompanying the rotation of the washing drum, and adheres to the residue. Deposits such as contaminants and sand are peeled off. The sedimentable substances such as sand among the separated substances are discharged to the outside of the outer cylinder through a separation screen provided at the other end (exit end) of the washing cylinder, and the residue and floating contaminants are removed. Is discharged into the dewatering screen cylinder. In the dewatering screen cylinder, the floating deposits are discharged together with the washing water through the openings of the dewatering screen cylinder, and the dewatered residue is discharged from the outlet end of the dewatering screen cylinder.

[0004] However, in the above-mentioned conventional residue cleaning apparatus, since the adhered material is separated from the residue in the washing drum by fir-washing with the rotator, it is necessary to separately prepare the rotator and to wear the rotator. There was a drawback that replacement was required due to damage or damage, resulting in high costs. In addition, when a large amount of residue is rapidly put into the washing drum, there is a problem that the rotator flows out of the washing drum and is discharged to the outside together with the residue. Further, during operation of the residue cleaning device, there is a disadvantage that noise is increased due to rolling of the rotator.

[0005] In order to eliminate such disadvantages, the present applicant has previously proposed a residue cleaning device capable of removing adhered substances from residue without requiring a rotator in the washing drum. . The residue cleaning device according to this prior application is provided with a baffle plate extending in the longitudinal direction of the washing drum on the inner wall of the washing drum, supplying the residue and washing water into the washing drum, and rotating the washing drum to remove the residue. Is disturbed so as to remove the deposits from the residue.

[0006]

The residue cleaning apparatus according to the prior application has a great feature that does not require a rotator in the washing drum. However, when the washing drum rotates, the property of the residue remains. Depending on the shape, it tends to become a stick-shaped lump, which prevents the inside of the lump from contacting the washing water effectively, and that the residue short-circuits in the washing drum, that is, without remaining in the washing drum. It may flow down and the contact time with the washing water becomes short, and the washing effect of the residue may be reduced.

Further, the conventional and residue cleaning apparatus, since the diameter of the outer cylinder and the dewatering screen cylinder different, is residue to been seen washing in a washing drum, formed between the outer cylinder and the dehydration SCREEN cylinder Step portion (see FIG. 1 used in an embodiment of the present invention described later)
Of the outer cylinder 1 and the dewatering screen cylinder 10), and the movement from the outer cylinder to the dewatering screen cylinder was not performed smoothly.

[0008] Therefore, the present invention can prevent the residue from being clumped in the washing drum, prevent short-circuiting of the residue in the washing drum, and can further prevent the residue from being removed from the outer drum to the dewatering screen. It is an object of the present invention to provide a residue cleaning device capable of smoothly moving the residue.

[0009]

In order to achieve the above object, the present invention provides an apparatus in which a washing cylinder is provided in a rotatably mounted outer shell and rotates with the outer shell. At the same time, a dewatering screen cylinder that rotates together with the outer cylinder is provided on the outlet side of the washing cylinder, and the dewatered screen cylinder is thrown into the washing cylinder, receives the disturbed residue, and sprays washing water to wash. In a residue cleaning device in which the residue that has been washed and dehydrated while washing and dewatering is discharged by a screw blade provided on the inner wall of the dewatering screen body, the washing water is sprayed on the residue that is put into the washing body. provided with a washing water spraying means, on the washing cylinder inner wall, a plurality of baffle plates being arranged at a predetermined interval along with the circumferential direction I along <br/> extending in the longitudinal direction of the laundry drum,
And when extending between the baffles in the circumferential direction of the washing cylinder
Both are arranged in a zigzag pattern along the longitudinal direction .
It is characterized in that a plurality of weir plates are provided.

[0010] The present invention apparatus, in order to achieve the above object, rotatably provided on the cross bar has an outer inside the body and provided with a laundry drum for rotation with the outer cylinder, the washing cylinder At the exit side, a dewatering screen cylinder that rotates together with the outer cylinder is provided. The dewatered screen cylinder is thrown into the washing cylinder, receives the disturbed residue, sprays washing water, dehydrates while washing, and performs washing. In the residue cleaning device in which the dewatered residue is discharged by screw blades provided on the inner wall of the dewatering screen cylinder, the dewatering screen cylinder inlet side between the outer cylinder and the dehydrating screen cylinder from the inner wall of the outer cylinder. A frustoconical guide tube is provided.

[0011]

In the above construction, the washing water from the washing water spraying means is sprinkled on the residue in the washing drum, and is disturbed by the baffle plate while the residue moves on the washing drum to separate the deposit from the residue. .
When the move in the wash濯胴of residue which moves over the weir plate, is residue lifted upward by the rotation of the catch laundry drum weir plate, massive and residue when falling collapses. Further, the residue in the washing drum is prevented from being short-circuited by the weir plate. Furthermore, residue to have been seen washing in the washing cylinder is being guided by the idea inner cylinder transfer from the outer cylinder to the dewatering screen cylinder inside.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view of an apparatus according to an embodiment.
The outer trunk 1 has tires 2a and 2b on the outer periphery of both ends,
These tires are mounted on a roller 3 provided on a gantry (not shown).
a and 3b are rotatably mounted.

A sprocket 4 is provided on the outer periphery of the center of the outer shell 1, and a chain driven by a motor (not shown) is stretched. An end plate 7 having an opening 5 at the center of one end (left end) of the outer shell 1 and having a scraping blade 6 inside is provided.

The other end (right end) of the outer shell 1 has an opening 8 at the center.
Is provided, and a dewatering screen cylinder 10 is provided outside the end plate 9. The opening 8 provided in the end plate 9 has a larger diameter than the opening 5 provided in the end plate 7 described above. Therefore, the water level in the outer cylinder 1 is regulated by the edge 8 ′ of the opening 8. You. In addition, outer trunk 1
A screw blade 11 is provided on the inner wall of the screw blade.
2 ... are provided.

The dewatering screen cylinder 10 keeps rods 13, 13... Composed of a number of pipes of the same diameter and the same length at a predetermined interval, for example, the gap between adjacent rods is about 3 to 5 mm. One end of the bar 13 is fixed to the periphery of the opening 8 of the end plate 9 by welding, and the other end is fixed to the ring member 14 by welding. Also, on the outside of the dewatering screen cylinder 10, anti-entanglement plates 1 along the longitudinal direction of the respective rods 13, 13,.
3 'is provided by welding.

A plurality of screw blades 1 are provided on the inner wall of the dewatering screen cylinder 10, that is, on the inner walls of the bars 13, 13,.
5, 15... Are fixed by welding, and are formed so that the residue inside the dewatering screen cylinder 10 can be transported toward the outlet end of the dewatering screen cylinder 10 by rotating in one direction.

The washing drum 20 has a diameter smaller than that of the outer drum and has a length almost half of that of the outer drum 1, and is concentrically fixed to the left side of the outer drum 1 by a plurality of support members 21, 21. Have been. At one end (entrance side) of the washing drum 20, there is provided an end plate 23 provided with an opening 22 having substantially the same diameter as the above-mentioned opening 5, and at the other end (outlet side) outside the same as the above-mentioned opening 8. A frusto-conical (cone) separating screen 24 is provided via a shaped end plate 20 '. Then, the inner wall of the washing drum 20, as shown by expanding in Fig. 2, the lateral direction of the washing drum 2 long in the longitudinal Direction (Figure 2 washing cylinder 20
Hand direction. ), A plurality of baffles 2
5, 25... Are provided. These baffles 25, 25
An inclined portion 25a is formed on the side where the residue is put into the washing drum 20 to move the thrown residue to the opposite side (opposite to the side where the residue is put) when the washing drum 20 rotates.

On the inner wall of the washing drum 20, a plurality of weir plates 26,
26 are provided in a staggered manner. These weir plates 26, 2
6 are a plurality of baffles 25, as shown in FIG.
25 , that is, the vertical direction in FIG.
Along the circumferential direction which is formed by winding is kicked set so. The height of the weir plate 26 is higher than the baffle plate 25 and is equal to or slightly higher than the opening edge of the end plate 20 ', as shown in FIG. It is configured to be slightly above the water level inside.

As shown in FIG. 1, the guide cylinder 1a has one end welded to the inner wall on the outlet side of the outer shell 1 and the other end around the opening 8 of the end plate 9, that is, on the entrance side of the dewatering screen cylinder 10. It is welded and formed in a frusto-conical shape having the same shape as the above-mentioned separation screen 24.

Covers 30 and 31 are provided on the entrance side and the exit side of the outer shell 1, respectively. The inlet cover 30 has a washing water supply pipe (washing water spraying means) provided with an upwardly directed residue supply port 32 and a downwardly directed deflection plate 33 at a part of the edge of the residue supply port 32. A chute 36 having a discharge port 35 is provided at a lower portion of the washing drum 20 and is opened at a lower side (lower left side) of one end inside the washing drum 20. In addition, the cover 30 is provided with a supply pipe 37 for washing water for washing sand and an outlet 38 for discharging sand. The outlet cover 31 further includes a supply pipe 39 for supplying cleaning water for preventing the dewatering screen cylinder 10 from being clogged, and a supply pipe 40 for supplying cleaning water to the residue in the dehydration screen cylinder 10. Is provided.

Next, the operation of the above configuration will be described. Now, is rotated in a predetermined direction by a chain outer cylinder 1 is stretched sprocket DOO 4, and the residue is is turned from residue feed inlet 32 to the inlet side of the washing drum 20, to which its turned Wash water from the wash water supply pipe 34 is sprayed on the residue. The residue is covered with baffles 25 provided on the inner wall of the washing drum 20.
Is moved to the outlet side by an inclined portion 25a provided on one end side of the washing drum, and the residue is disturbed while being immersed in the washing water by the rotation of the washing drum 20 and the baffle plate 25 provided on the inner wall of the washing drum. . As a result, deposits such as sand are efficiently removed from the residue. Washing drum 20 Works residue is to be formed a mass of rod-like by the rotation of the washing drum 20, and residue is catching residue to the sheathing board 26 when exceeding the weir plate 26, a washing drum
By being repeatedly lifted and then dropped by the rotation of the roller 20, the powder is crushed to prevent the formation of a rope-like lump in the washing drum 20. Further, the weir plate 26 installed above the water level is prevented from flowing out accompanying the water flow in the washing drum 20, and the residue is washed for a predetermined time.
It can stay within zero.

The sedimentary deposits (sand) fall into the outer shell 1 from the openings of the separation screen 24, and the residue and the floating deposits are dehydrated from the end of the separation screen 24 through the opening 8. It is transferred to the screen cylinder 10. In particular, since the distance between the guide tube 1a and the separation screen 24 is configured to be gradually narrowed toward the dewatering screen cylinder 10, the flow rate of the washing water indicated by the arrow B is increased, and the dewatering of the residue is performed. Movement to the screen cylinder 10 is promoted.

The dewatering screen cylinder 10 in Works residue is rolling in the direction of rotation side of the portion of the bottom of the dewatering screen cylinder 10, moves to the dewatering screen cylinder 10 outlet side by the action of the screw blade 15. Then, during this movement, the washing water from the supply pipe 40 is sprayed, and the dirt adhering to the residue is washed away.
You.

The washing water sprayed on the residue and the washing water containing buoyant deposits are sent to a sewage treatment facility (not shown) from a drain 41 provided below the dewatering screen cylinder 10 for treatment. . The sewage discharged from the outlet of the dewatering screen cylinder 10 is sent from a sewage discharge port 42 to a dehydrator (not shown) to be dehydrated, and then disposed of by incineration or the like.

Thread-like residue is present in the residue in the dewatering screen cylinder 10, and most of such residue is formed into a lump residue formed by rolling the residue with the dewatering screen cylinder. Although they are entangled, some of them may jump out of the gap between the bars 13. However, the protruding thread-like residue is blocked by the anti-entanglement plate 13 ′, so that the sticking to the bar 13 is prevented. Therefore, when the spinning dewatering screen cylinder 10 is lifted upward by rotation of the dewatering screen cylinder 10, the flying thread-like residue falls due to its own weight and the action of the washing water from the supply pipe 39,
The rolling debris is removed by being removed from the lumps and the clogging of the dewatering screen cylinder 10 is effectively prevented.

The sand in the outer shell 1 is moved by the screw blade 11 in the direction shown by the solid arrow A, that is, toward the supply side of the residue. During this movement, the washing water supplied from the supply pipe 37 flows toward the other end of the outer shell 1 (see arrow B in FIG. 1), so that the sand and the washing water come into countercurrent contact and are washed. Further, since the turbulence is caused by the blades 12, the washing of the sand is further promoted. The washed sand is lifted by the blade 6
To the outlet 38. The waste water from which the sand has been washed is discharged from the drain port 41 together with the waste water from which the residue has been washed.

The apparatus according to the present embodiment includes a washing cylinder 2 with a baffle plate 25.
Since the washing water is sprayed to 0, the residue can be washed with the washing drum 20 and the attached matter can be peeled off from the residue without rotating the rotator as in the conventional case.
The weir plate 26 can prevent lump formation in the washing drum 20 from being clumped, and can efficiently make contact between the residue and the washing water.

[0028]

According to the apparatus of the present invention, the washing water is sprayed on the washing cylinder provided with the baffle plate, so that the residue can be washed with water in the washing cylinder and the adhered substances can be efficiently removed from the residue.
You. Also, together if possible to prevent massive generation of by residue of the washing in the drum by the weir plate, it can prevent a short circuit flow and residue in the washing濯胴,
The contact between the residue and the washing water can be performed efficiently.

In the apparatus of the present invention, since the guide cylinder is provided at the step between the outer cylinder and the dewatering screen cylinder, the residue can be smoothly transferred from the outer cylinder to the dewatering screen cylinder.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the apparatus of the present invention.

FIG. 2 is a development view of an inner wall of the washing drum.

FIG. 3 is a sectional view taken along line AA of FIG. 2 in a state where a washing drum is not deployed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Outer body 1a Guide cylinder 10 Dehydration screen cylinder 15 Screw blade 20 Washing cylinder 25 Baffle plate 26 Weir plate 34 Washing water supply pipe (washing water spraying means)

Claims (2)

(57) [Claims] 1. A dewatering screen provided in a rotatably mounted outer shell, provided with a washing drum so as to rotate with the outer shell, and rotated together with the outer shell at an outlet side of the washing drum. A drum is provided, the dewatered screen drum is thrown into the washing drum, the disturbed residue is received, the washing residue is received, the washing water is sprayed, and the washing is dehydrated while washing. In a residue cleaning device that is designed to be discharged by the provided screw blades, a cleaning water spraying unit that sprays cleaning water onto the residue that has been thrown into the washing drum is provided, and on the inner wall of the washing drum ,
When a plurality of baffle plates extending in the longitudinal direction of the washing drum and arranged at predetermined intervals along the circumferential direction are provided, and extending between the baffle plates in the circumferential direction of the washing drum,
In addition, multiple staggered feet are arranged along the above-mentioned longitudinal direction.
A residue cleaning device comprising a plurality of weir plates. 2. A rotatably provided on cross bar has an outer inside the body and provided with a laundry drum to rotate together with the outer body, dewatering screen which rotates with the outer cylinder to the outlet side of the washing cylinder A drum is provided, the dewatered screen drum is thrown into the washing drum, the disturbed residue is received, the washing residue is received, the washing water is sprayed, and the washing is dehydrated while washing. In the residue cleaning device configured to be discharged by the provided screw blade, a frusto-conical guide tube is provided between the outer cylinder and the dewatering screen cylinder from the inner wall of the outer cylinder to the dehydration screen cylinder inlet side. A residue cleaning device, characterized in that: