JPS6157049B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary vibrating sieve machine that dewaters sludge, sludge, and other articles by applying vibration while rotating, and separates and recovers water and solids.

In a conventional rotary sieve machine, a tube shaft is provided near the axis of a rotating body formed into a cylindrical shape using a wire mesh or a perforated plate, and a large amount of water-containing raw material, such as sludge, is removed from one open end of the tube shaft. , sludge, etc. (hereinafter abbreviated as slurry) generated in sewage treatment plants, etc., is continuously supplied into the rotating drum. The slurry is moved toward the outlet of the other end by rotating a rotary cylinder whose other end is inclined, while excess water is removed and only the solid content is taken out from the outlet.

However, in this apparatus, the rotating cylinder is likely to become clogged due to the fine solid content in the sieve material, and therefore the rotating cylinder must be washed relatively frequently with water. This jet water jet is sprayed from the outer circumferential surface of the rotary cylinder for this water washing, and a large amount of washing water is required to remove the clogging.Moreover, if the solid content is in a floc-like form due to a coagulant, etc., this jet jet is used. There are drawbacks such as the floc being destroyed by the washing water.

The present invention has been made in view of this, and will be described below based on examples.

In the figure, reference numeral 1 denotes a rotating cylinder formed into a cylindrical shape with openings at both ends made of wire mesh or perforated plate of the required mesh, and two to three or more bosses 2 are arranged on the internal axis of the rotating cylinder 1. The boss 2 and the rotating body 1 are integrated via the stay 3, and a shaft 4 is inserted between the bosses 2 and 2.
is passed through the shaft 4, and support shafts 8, 8 are provided at both ends of this shaft 4 via eccentric shaft joints 7, 7, and the support shafts 8, 8 are supported by bearings and rotated about the shafts 8, 8 as the rotation center. When rotating the cylinder, the rotary cylinder 1 rotates according to the amount of eccentricity of the eccentric shaft joint.

The rotary cylinder 1, which is rotatably supported in this way, is arranged so as to be inclined so that the solid content discharge side is lower, and at the same time, there is a supply port at one end, that is, at the upper end, for supplying raw materials into the cylinder. A tube 9 is provided.

Further, one or two ring-shaped planetary friction rings 5 are integrally provided on the outer circumferential surface of the rotating body 1. This planetary friction ring 5 is made of a gear, or is made of leather, a belt, etc., and is integrally fixed along the outer periphery of the rotating body. This planetary friction ring 5 also has a fixed sun ring 6 having a diameter larger than that of the ring 5.
It is arranged in the sun ring 6 so as to be in contact with one inner surface of the sun ring 6.

Reference numeral 10 denotes a drain gutter provided at the lower part of the rotary drum. A drain port D is provided in a part of the drain gutter, and a chute ST for discharging solids is provided at the discharge side end of the rotary drum.

In the rotary vibrating sieve machine constructed as described above, when the rotary drum is driven to rotate at a required rotational speed, the outer peripheral surface of the planetary friction ring 5 of the rotary drum is caused to form on one inner peripheral surface of the sun ring 6. Since some parts are in contact, the rotating body rotates and revolves like a planet.

In this case, the number of revolutions of the crankshaft is N, the eccentricity of e is the pitch circle of the sun ring, s is the pitch circle of the planetary ring, p is the number of rotations of the planetary ring, that is, the rotating body, then S-P=2e M/N=1 -S/P=-S-P/P M=-(s-p/P)N=-2e/pN From the above, the rotating body rotates 2e/p N rotations while applying N vibrations. (However, the direction of rotation is opposite between the crankshaft and the rotating barrel.) Slurry G is fed from the supply pipe into the rotating barrel, which rotates in this way and generates vibrations due to the eccentricity of the shafts 4 and 8.
When the slurry in the cylinder is continuously supplied to the lower, sloping side of the cylinder, only the water is passed through the holes on the outer peripheral surface of the cylinder into the drainage gutter, and only the dehydrated solids are passed through the chute ST from the end of the cylinder. It is then released to the outside.

In this case, the rotating drum becomes a planet and revolves around its axis, causing vibrations. Therefore, even if clogging occurs on the lower surface of the rotating drum (see Figure 2), the clogging will be removed by the vibration generated by the rotation of the rotating cylinder when the clogged part is moved to an upper position. Further, due to the rotation of the rotary drum, the portion from which the clogging has been removed moves to the lower part, and overload is performed.

In this way, the water is always drained through the filtration surface without clogging, and the dewatering ability is improved. The rotary vibrating sieve machine of the present invention can be used not only for dehydrating paper, pulp, chemical, and other industrial wastes, sludge, etc., but also for dehydrating fishery industry waste, sludge, etc., as well as cleaning raw fish meat at fish processing plants. It can be used for dehydration and also as a powder sieve.

[Brief explanation of the drawing]

Figure 1 is a schematic sectional view, Figure 2 is a side view,
FIG. 3 is an explanatory diagram. 1...Rotating body, 2...Boss, 3...Stay,
4, 8... Shaft, 5... Planetary friction ring, 6... Sun ring, 7... Eccentric shaft joint, 9... Supply pipe, 1
0...Drainage gutter.

Claims (1)

[Claims] 1 A sun ring that supports a rotary cylinder whose outer periphery is a sieve surface so as to be rotated at a constant eccentricity with respect to its axis, and fixes a part of a planetary friction ring provided on the outer peripheral surface of this rotary cylinder. It is characterized by being inscribed in the part, thereby causing the rotary cylinder to rotate and revolve to prevent clogging, and to improve the sieving ability by always keeping the sieve surface free from clogging at the bottom. Rotating vibrating sieve machine.