JPS6234594Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a particle size control machine, in particular for crushing sludge cake, in which a drum portion is comprised of a pair of flanges and a steel wire stretched between the flanges.

In facilities for the purpose of water treatment, such as water treatment plants, sewage treatment plants, and manure treatment plants, the sludge generated during the water treatment process is generally dehydrated and turned into a plate-shaped dehydrated cake, that is, a sludge cake, containing 60 to 80% water. It is discharged as.

By the way, since these cakes have conventionally been generally disposed of by landfilling or incineration, there have been no particular problems in their disposal. However, recently, it has come to be used as a soil reducing agent or fertilizer, so chemical treatment is required, and as a pretreatment, it has become necessary to crush the sludge cake to a certain particle size. However, since these cakes are generally forcibly precipitated and solidified by chemicals, they are viscous and highly sticky, making it difficult to adjust the particle size. It has been difficult to efficiently crush and adjust the particle size using conventional methods.

The present invention was devised to overcome the above-mentioned difficulties, and its purpose is to avoid the problem of stickiness even though it is a mechanical device, and to adjust the particle size of sludge efficiently while being simple. The aim is to provide a regulator.

The above objects of the present invention can be achieved by constructing the drum from a pair of spaced apart flanges and a steel wire stretched at a desired distance between the flanges.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 3, a drum D, which is supplied with a particle size-adjusted substance (hereinafter simply referred to as sludge) and crushed to have a desired particle size, has a pair of ring-shaped flanges 1 spaced apart from each other. , 1', and a plurality of steel wires, such as piano wire 2, stretched between these flanges.

The flanges 1, 1' are held at desired intervals by a plurality of spacers 3, for example four, and steel wires 2 are stretched over the entire circumference of the flanges at desired intervals. Further, a hollow auxiliary flange 4 is supported between the flanges 1 and 1' by a spacer 3.
Steel wires pass between these auxiliary flanges.

The drum D is rotatably driven and has a hollow interior. For rotating the drum D, therefore, short shafts 5, 5' are provided which extend axially outwards from the flanges 1, 1', and inside the drum D there are not exist. In the illustrated embodiment, the flanges 1, 1' and the short shaft 5,
5' is integrated with ribs 6, 6'. The shaft ends of the short shafts 5, 5' are supported in the casing 7 by bearings 8, 8'.

The casing 7 is placed on a base 10, and the drum is driven to rotate, and a motor for this purpose, such as a geared motor M, is placed on the base. A pulley 12 is fixed to the output shaft 11 of the motor M, a pulley 15 is fixed to the input shaft 14 of the reducer 13, and a belt 16 is wound between these pulleys.

Output shafts 17 and 18 that rotate in opposite directions come out from the principle machine 13. and output shaft 18
A pulley 19 is fixed to the output shaft 17, and a belt is wound between the pulley 20 fixed to the short shaft 5' shown below in FIG.
A belt is similarly wound between the pulley 1 and the pulley 22 of the short shaft 5' shown above. The drums are then driven in mutually opposite directions in the directions indicated by arrows a and a in FIG.

Since the present invention is configured as described above,
Now, when the sludge X is supplied falling from the supply port 20 of the casing 7 toward the drum D, the drum
Since the steel wire 2 is rotationally driven by the steel wire 2, the steel wire 2 is also moving. The sludge therefore collides with the moving steel wire and is crushed. Then, it passes between the adjacent steel wires 2, 2 and falls downward. Drum D located above
The sludge X' that has not been crushed by the next drum D' is crushed in the same way by the next drum D' (i.e., the drum D' is located below drum D by L and at a distance l in the horizontal direction). It is clear that

As described above, according to the present invention, the drum is composed of a flange and a steel wire, and since the drum is rotationally driven, crushing is achieved by the synergistic effect of the falling energy of the sludge and the rotational energy of the steel wire, thereby reducing stickiness. Even though it is strong, it is crushed efficiently. Since the inside of the drum is empty, there is no problem with the sludge falling, and therefore there is no risk of sludge staying inside the drum. Furthermore, the particle size can be adjusted by the pitch of the steel wire, but it is also possible by the rotational speed of the drum, so by configuring the reducer 13 in multiple stages, the speed can be arbitrarily selected. Therefore, the particle size can also be adjusted arbitrarily. Furthermore, since crushing is carried out using high-speed steel wires, there is no adhesion and growth of sludge, and furthermore, sludge with a certain particle size or less falls without touching the steel wires, so energy is used only for crushing, which is efficient. Furthermore, the present invention has the advantage that it has a simple structure, is inexpensive, has no parts that can break down, and only has a steel wire as a consumable part, making it easy to replace and maintain.

Now, the present invention is implemented as described above, but various other modifications are possible. For example, in the illustrated embodiment, two drums are used, but it is of course possible to use one or even three drums. Alternatively, the flanges 1, 1' may be pivotally supported on the casing 7 and the steel wire may be stretched without providing the spacers 3, 3. Furthermore, the cross-sectional shape of the spacer can be made triangular, for example, to facilitate the fall of the sludge.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is a side view of the same, in which the A part is seen in the direction of arrow A--A in FIG. 1, the C-shaped part is seen in the direction of arrow C--C, and FIG. 3 is a plan view thereof. 1, 1'...Ring-shaped flange, 2, 2...Steel wire, 3, 3...Spacer, 5, 5'...Short axis, M
……motor.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a drum that is rotationally driven by power,
In the sludge particle size adjusting machine, the material to be granulated is supplied to the surface of the drum and crushed to a desired particle size. and steel wires stretched around the entire circumference at intervals of Particle size adjustment machine. (2) The sludge particle size adjusting machine according to claim 1, which is a utility model, and comprises two drums spaced apart from each other in the vertical and horizontal directions. (3) The sludge particle size adjusting machine according to claim 1 or 2 of the utility model registration claim, which comprises a drum having a spacer between flanges.