JPH0248036Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention washes and crushes a mixture of waste solids and water collected in river channels or sewage treatment plants, and crushes them into predetermined sizes. The present invention relates to a residue cleaning device suitable for separating residue solids, dirt, and water, respectively.

(Prior art) In sewage treatment plants, etc., garbage that flows into the sewage inflow channel along with running water is captured by a dust remover, mud and sand are removed by washing water, and it is separated from the washing water. . However, at relay pumping stations located in urban areas, solid matter such as raw excrement, which is highly contaminated and has a foul odor, is mixed into the garbage, and the treatment of this becomes a problem.

Therefore, in the past, the inner and outer shells were constructed with an inner and outer double barrel that rotated around the same horizontal axis, and the inner shell was used as a cleaning barrel, and a large number of spheres were housed in this inner shell, and the balls were introduced from one side by an input chute. A sand/sludge/washing separator is used in which the sludge containing solid matter such as ground raw feces is crushed and washed by the spheres.

(Problem to be solved by this invention) However, in the case of the conventional washing and separator, the spheres in the inner shell are discharged outside the shell together with the residue, and the spheres are separated from the residue and returned to the inner shell. The current situation is that it cannot be made to function satisfactorily.

This invention was made to solve the above-mentioned problems.

(Means for solving the problem) In other words, the residue cleaning device according to this invention has the following features:
an outer drum rotating about a horizontal axis and having a sand transfer helical blade on its inner surface; an inner basket mounted concentrically within the outer drum and having a sludge transfer helical blade on its inner circumference; A plurality of solid material grinding rollers are mounted inside the inner basket so as to rotate on their own axis and contact the inner surface of the inner basket on a horizontal shaft that rotates concentrically with the inner basket, a sludge input chute, and a washing water supply pipe. The sludge discharge side of the inner basket is characterized by a cone shape with a reduced diameter, and the inner basket is equipped with numerous slits or holes to discharge water and sand in a radial direction. are forced to do so.

(Function) Therefore, the sludge thrown into one side of the inner basket from the sludge input chute is washed by the washing water jetted from the washing water supply pipe, while the sludge is being washed by the rotating inside basket. The waste is transferred toward the exit (hereinafter referred to as forward) by a spiral blade in the basket, and the dirty sand in the residue is separated and discharged from the slit together with water. The washed residue is crushed and divided by a grinding roller, washed with the washing water remaining in the inner basket, reaches the cone-shaped part, and the cone is drained from many drainage holes. The sand falls and is transferred into the outer drum. On the other hand, the sludge from which the dirty sand has been separated is transferred forward by the spiral blade of the inner basket cone-shaped part, discharged and dropped from the discharge end of the inner basket, and sent to the top of the carry-out conveyor through the sludge discharge chute. It will be done. On the other hand, the dirty sand that has been separated from the sludge and has fallen into the outer drum is transferred through the washing water by a spiral blade in the opposite direction (hereinafter referred to as "backward") from the sludge inside the outer drum, which rotates in the same direction as the inner basket. The washed dirty sand, that is, washed sand, is caused to fall from the end of the outer drum on the side of the sludge input chute, through the washed sand discharge chute, onto a conveyor conveyor, etc. Washing waste water is also discharged from the edge of the cone of the outer drum. In this way, the sludge in the sludge is completely and efficiently separated and washed, and the sludge is subdivided into approximately predetermined sizes, and solids such as raw feces mixed in are also crushed and ensured. Moreover, efficient cleaning is performed.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

(Example) In the drawing, 1 is an outer drum, and four supporting rollers 3, 4 are rotatably mounted on an underframe 2.
is rotatably supported via support tires 5. Both support rollers 3 and 4 are supported by bearings 8 installed on the underframe 2 via common rotation shafts 6 and 7, and one rotation shaft 6 is lengthened to serve as a drive shaft and is attached to one end thereof. Transmission chain foil 9
is wedged. Power is transmitted to the transmission chain wheel 9 via a chain 12 from a drive chain wheel 11 wedged onto the output shaft of a motor 10 provided overhanging from the underframe 2. A chain wheel 13 for driving the outer drum 1 is wedged on the rotating shaft 6 and is located between both tires 5, and is meshed with a chain 15 that is wound around the outer drum 1 via a ring-shaped attachment 14. It is being

The outer drum 1 includes a cylindrical body portion 1A and a cone-shaped portion 1.
B are separably connected to each other via a flange 1C, and ring-shaped end plates 1D and 1E are fixed to both ends. And, on the inner surface of the cylindrical body portion 1A,
A sand transporting spiral blade 16 is fixed so that sand is transported rearward. Reference numeral 17 denotes an inner basket, which is disposed within the outer drum 1 and is concentrically connected to the outer drum 1 by front and rear connecting members 18, with a cylindrical portion 17A and a cone-shaped portion 17B separably connected via a flange 17C. A ring-shaped rear end plate 17D is fixed to the rear edge.
The front edge protrudes further forward than the outer drum 1, from which the mustard residue falls. As shown in FIG. 3, the inner basket cylindrical portion 17A is formed into a cylindrical shape by arranging a large number of bars 19 each having a substantially trapezoidal cross section at a predetermined interval.
Water and sand are drained from the
The inner basket cone portion 17B is formed of a perforated plate through which sand or water is discharged through holes 21, and a helical blade 22 for transporting scum is fixed to the inner surface. Furthermore, a helical blade 22 for transporting residue is fixed to the inner surface of the inner basket cylindrical portion 17A, except for a portion at the front.

At the front end of the outer drum 1 is an inner basket 1.
A front cover 23 that also covers the front end of the cover 23 is provided, and a cleaning sewage chute 25 having a cleaning sewage discharge port 24 and a cleaning sludge discharge chute 27 having a sludge discharge port 26 are formed below. An inspection window 28 and its lid 29 are provided on the end plate.

A ring-shaped sand discharge guide plate 30 that expands outward at the rear is fixed to the rear end surface of the inner peripheral edge of the rear end plate 1D of the outer drum 1. A rear cover 31 is provided to cover this, and a cleaning sand discharge chute 33 having a cleaning sand discharge port 32 is formed in the lower part of this cover 31.

A sludge input chute 34, a sludge washing water supply pipe 35, and a roller attachment shaft 36 for grinding solids such as raw feces are exposed into the inner basket 17 through the rear cover 31. The input opening 34A of the residue input chute 34 is provided with a piping 37 for water for washing and for pouring in the residue. The mounting shaft 36 is rotatably supported by bearing stands 38 and 39 provided on the rear underframe, and a draining disk 40 and a cone-shaped cleaning sand dispensing member 41 are fixed in the rear cover 31. A solid matter grinding roller mounting frame 42 is wedged at the inner end.

The solid matter grinding roller mounting frame 42 is made up of two cross-shaped members 42A when viewed from the front fixed to a boss portion 42B at a predetermined interval in the front and back direction, and a pin hole 43 parallel to the mounting shaft 36 is provided at each tip. ing. 4
4 is a solid matter grinding roller, and a spiral groove 44A is provided on the outer peripheral surface in a direction that allows the scum to be sent forward;
It is rotatably attached via a shaft 46 between the tips of two front and rear swing arms 45. Each base end of the swinging arm 45 is rotatably attached to a pin 47 installed in the pin hole 43 of the mounting frame 42, and a spring 48 wound around the pin 47 allows
The swing arm 45 is always urged outward (in the rotational direction of the mounting shaft 36) so that the roller 44 is positioned with a predetermined gap on the inner surface of the portion of the inner basket 17 where the spiral blade 22 is not provided. There is. Note that the center portion 48A of the spring 48 is connected to the mounting frame 42.
The spring 48 is locked to a spring receiver 49 fixed to the
Both ends are the rear side surface 45A in the rotational direction of the swing arm 45
is in contact with. A stopper abutment 50 is fixed between the base ends of the swinging arm 45, and a stopper bolt 51 is screwed between each end of the mounting frame 42 so that the length can be adjusted freely, and is in contact with the roller 4.
4 and the inner surface of the inner basket 17 can be arbitrarily adjusted.

Further, an on-axis reduction gear 52 is provided on the mounting shaft 36, and a transmission chain is connected between a chain wheel 54 wedged to the input shaft 53 of the reduction gear 52 and a chain wheel 55 wedged to the rotary shaft 6. 56 is wound around and driven by the motor 10.

According to the embodiment of this invention, when the motor 10 is started, power is transmitted from the rotating shaft 6 to the outer drum 1 via the chain wheel 13 and the chain 15.
Together with the outer drum 1, the inner basket 17 is also rotated in the direction shown by arrow A in FIG. It is rotated in the direction shown by arrow B in Figure 2. Therefore, when the sludge washing water is discharged from the supply pipe 35 and the sludge is introduced from the input chute 34, the sludge is washed by the washing water in the inner basket 17, and the dirty sand is separated and filled into the gap. 20 and falls into the outer drum 1, and the residue is sent forward by the spiral blade 22, and the solid matter in the residue is ground by the roller 44 and sent forward into the inner basket. The remaining dirt is washed away by the washing water accumulated in the outer drum 17, and the remaining dirt is discharged from the gap 20 or the hole 21 of the cone-shaped portion 17B and transferred into the outer drum 1.
The residue washed in this way is transferred to the spiral blade 22.
The waste is transferred to the front end by the sludge, falls from the front end of this inner basket 17, passes through the sludge discharge chute 27, and is sent from the sludge discharge port 26 onto a conveyor (not shown) or the like. In addition, the dirty sand that has fallen into the outer drum 1 is transferred by the spiral blade 16 to the rear opposite to the sludge, reaches the rear end of the spiral blade 16, where it is raised upward and then falls. The washed sand hits the washed sand ejecting member 41 and is taken out from the discharge port 32 via the washed sand discharge chute 33.

Note that the cleaning wastewater overflows from the inner peripheral edge of the end plate 1E at the front end of the outer drum 1, passes through the chute 25, and is discharged from the cleaning wastewater discharge port 24.

In the embodiment of this invention, since the spiral groove 44A is formed on the outer circumferential surface of the solid material grinding roller 44, the ground solid material is smoothly transported forward together with the residue.

Furthermore, since a water pipe 37 for cleaning and pouring water is provided in the residue inlet 34A,
The residue can be smoothly and reliably thrown into the inner basket 17.

(Effects of the invention) Since the sludge cleaning device according to this invention is configured as described above, even if solid matter such as raw feces is mixed in the sludge, it can be reliably ground and cleaned. The structure is simple and robust, there is no failure, and maintenance is easy, and cleaning of residue and separation and discharge of dirty sand can be carried out smoothly and reliably, and moreover, efficiently.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway front view, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is an enlarged view of section B in Fig. 2. Figure, 4th
The figure is a plan view, FIG. 5 is a left side view of FIG. 1, and FIG. 6 is a right side view of FIG. 1. 1... Outer drum, 1A... Cylindrical part, 1B...
... Cone-shaped part, 2 ... Underframe, 3, 4 ... Support roller, 5 ... Support tire, 6, 7 ... Rotating shaft, 8 ...
...Bearing, 13...Chain foil, 15...Chain, 16...Sand transfer spiral blade, 17...Inner basket, 17A...Cylindrical part, 17B...Cone-shaped part, 20...Gap, 21... Hole, 22...
Helical blade for transporting residue, 24...Washing sewage outlet, 25...Washing sewage chute, 26...Residue discharge port, 27...Residue discharge chute, 34...Residue input chute, 35...... Residue washing water supply pipe, 36
... Solid material grinding roller mounting shaft, 42 ... Roller mounting frame, 44 ... Solid material grinding roller, 45
...Swinging arm, 48...spring.

Claims (1)

[Scope of utility model registration request] an outer drum rotating about a horizontal axis and having a helical blade for transporting sand on its inner surface; an inner basket mounted concentrically within the outer drum and having a helical blade for transporting residue on its inner peripheral surface; a plurality of solid material grinding rollers mounted in the inner basket so as to abut the inner surface of the inner basket and rotate on a horizontal shaft that rotates concentrically therewith;
A sludge cleaning device comprising a sludge inputting chute and a washing water supply pipe, characterized in that the sludge discharge side of the inner basket has a cone shape with a reduced diameter.