JPS59166399A - Sludge dehydrator with antislip rotor - Google Patents

Abstract

PURPOSE:To provide a sludge dehydrator which pulls and expands forcibly the compressed sludge and to accelerate continuous dehydration by providing recesses or projecting parts to the outside circumferential surface of a rotor having the curved surface approximated to the internal envelop of a peritrochoid curve. CONSTITUTION:A rotor 2 has a curved surface approximated to the internal envelop of a peritrochoid curve. Projecting parts or recesses such as square bar- shaped pawls 11 or the like in parallel with a revolving shaft 6 are arranged and provided zigzag on the outside circumferential surface of the rotor 2. When the rotor 2 revolves to compress sludge, the sludge is hooked by the pawls 11, etc. and pulled and delivered forcibly to the discharging side. The sludge is compacted by the compression and the rate of dehydration decreases but the expanded gaps are generated upon receiving such pulling, by which the decreased dehydratability is recovered. The dehydratability is improved by such antislip rotor 2 and the continuous dehydration is accomplished smoothly and efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press dewatering apparatus for sludge, and particularly to the structure of a rotor of a rotary sludge dewatering apparatus.

As shown in Figs. 1 and 2, a conventional sludge compression dewatering system in which a chute 1 having an approximate peritrochoid curved surface and a rotor 2 having an approximate curved surface connected thereto can elastically approach or come into contact with each other. In the device, one end of a chute 1 is pivotally connected to a mounting base 4 via a pivot pin 3, and a circular eccentric cam 5 is fixed to a rotor 2 disposed above the rotor 2. A rotary shaft 6 is provided through the rotary shaft 6, and the rotary shaft 6 is pivotally supported on the mounting base 4 via means such as a bearing. An internal gear 7 is fixed to the rotor 2 concentrically with an eccentric cam 5, and an external gear 8 through which a rotating shaft 6 rotatably passes is fixed to the mounting base 4.
It is fixed so that it interlocks with the

Then, the ratio of the number of teeth between the internal gear 7 and the external gear 8 is N:N-4.
Set to . The free end of the chute 1 and the mounting base 4 are connected via a telescopic cylinder 9, and the chute 1 is supported under the rotor 2 so as to be elastically close to or in contact with the rotor 2. However, as mentioned above.

When the rotating shaft 6 is rotated, the rotor 2 revolves around the rotating shaft 6, and the rotor 2 rotates by 1/N for one revolution. As the rotor 2 revolves, the slag is squeezed between the rotor 2 and the chute 1, and then released. Then, in synchronization with this, it rotates and discharges the squeezed sludge, and at the same time draws in the water-containing sludge supplied via the guide plate 10, and repeats this operation to perform continuous dewatering. .

However, since the outer peripheral surface of the rotor 2 is a smooth curved surface, slippage may occur between the rotor 2 and the slag.
As a result, the rotor 2 cannot draw in and discharge the sludge through its revolution and rotation, making continuous dewatering of the sludge difficult.

In order to compensate for the above-mentioned drawbacks, the present invention aims to provide a clean water device that is equipped with a rotor that has increased friction with the slag, and is capable of smoothly and continuously dewatering.

This is a lot of invention! A concave part or convex part is provided on the outer circumferential surface of the rotor, which has a curved surface similar to the inner envelope of a lochoid curve, and the four parts or convex parts of the rotor that revolves and rotates on its own axis are locked to this and the residue is forcibly The purpose is to pull and compress the residue while transferring it from the supply side to the discharge side of the chute, and to pull and expand the compacted residue tissue to promote continuous dehydration.

An embodiment of the present invention will be described based on FIGS. 3 and 4. Note that the same reference numerals are used for the same members as in the prior art, and the description thereof will be omitted.

In the figure, the external gear 8 fixed to the side housing part of the mounting base 4, the rotor 2 equipped with the internal gear 7 that meshes with the external gear 8, and the chute 1 facing the rotor 2 are arranged in the same manner as in the conventional case. It is. The chute 1 has a curved surface approximating a peritrochoid curve, and the rotor 2 has a curved surface approximating the curve.

On the outer peripheral surface of the rotor 2, square rod-shaped pawls 11 parallel to the rotating shaft 6 are arranged in a staggered manner and protrude at approximately equal intervals. Note that the ratio of the number of teeth between the internal gear 7 and the external gear 8 is set to 3:2. The operation of the above configuration will be explained.

Every time the rotor 2 revolves once around the rotating shaft 6, the rotor 2
rotates by 1/3, compresses the residue, and hooks it onto the claw 11 to forcibly pull it toward the discharge side and send it out. By squeezing, the residue is compacted and its dehydration properties are reduced, but when subjected to the side tension, newly enlarged gaps are created and the dehydration properties are restored. Note that there is a claw 1 on the outer periphery of the rotor 2.
Even if four parts are provided instead of four parts, the same effect can be obtained.

As explained above, the clean water device of this invention is
Since four parts or convex parts are provided on the outer periphery of the rotor, which has a curved surface approximating the internal connection of the trophite curve, the compressed residue is caught on the four parts or convex parts, and is forcibly pulled and sent out, as well as being stretched. This eliminates the slippage between the parts and improves dewatering performance, allowing continuous dewatering to be carried out smoothly and efficiently.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram of the rotary type Shikimizu type, Fig. 2 is a sectional view of the rotor end, Fig. 3 is a side view showing a part of the embodiment of the present invention, and Fig. 4 is a front view of the rotor. 1: Shoot, 2: Rotor, 11: Tsume Agent Patent Attorney Takashi Honma / Zuka page 3 + Figure

Claims (1)

[Claims] A chute with an approximate peritrochoid curved surface and a rotor with an inner envelope approximate curved surface are elastically supported so as to face each other and come close to each other. A sludge dewatering device equipped with an anti-slip rotor.