JPS5922639B2 - Sludge feeding device in belt press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a sludge feeding device in a belt press.

Conventionally, devices for uniformly supplying sludge to the sludge in a belt press include widening the width of the sludge supply port, or receiving the sludge discharged from the supply port in a trough, and distributing the sludge from the trough to a wide sludge. There are known methods of mechanically spreading the sludge supplied onto the e-cloth or onto the e-cloth.
In both cases, it is difficult to achieve uniform diffusion when the width of the fabric is as wide as 3 m, and especially when there is not enough space to install the machine, the above-mentioned trough is installed.
Mechanical spreading devices cannot be used.

This invention solves the above-mentioned conventional difficulties in supplying sludge, and by skillfully utilizing the properties of sludge, it is possible to spread sludge over a wide area despite having an extremely simple structure. This is the realization of the device.

Below, the present invention will be described in detail based on the drawings. First, as shown in the drawings, the structure is such that a pair of upper and lower f cloths are freely runnable and runnable between a number of rolls. In a belt press in which the upper cloth 2 is disposed on an upward slope in the traveling direction, and the supplied sludge is pressurized and dewatered, the upper cloth 2 is placed on the upper cloth 2 below the sludge supply port 1. In this case, a sludge diffusion plate 3 is arranged across the gold mine.

This diffusion plate 3 uses a rubber plate in the illustrated example, and since sludge tends to concentrate and be washed away in the lower part of the sludge supply port 1, the center of the tip of the diffusion plate 3 in the r-cloth running direction is The section is cut out and its width in the front and back direction is narrowed to allow water to drain quickly and prevent water from flowing.

Further, seal plates 4, 4 are provided at both left and right ends of the diffusion plate 3.
These seal plates 4 are provided to prevent the supplied sludge from spilling over the edges of the upper cloth 2.
．． 4, the corners of the diffusion plate 3 are cut out to prevent the sludge from stagnating and the core cake from becoming thick.

The sludge supply device according to the present invention is configured as described above, and therefore, the sludge supplied onto the diffusion plate 3 flows from side to side on the diffusion plate 3, stays on the diffusion plate 3, and ascends the slope. It overflows and is supplied to the upper cloth 2 from the edge of the diffusion plate 3, which has a width similar to that of the upper cloth, and is diffused and supplied onto the upper cloth 2 from the edge, which has approximately the same width as the upper cloth. However, in the conventional device, since the mud cloth is run uphill, the sludge supplied below the sludge supply port does not flow in the running direction of the mud cloth, but is washed away in the width direction of the mixed cloth. sludge stagnates on both the left and right sides of the cloth, and the sludge cake is thinner in the center and thicker at the left and right ends, making it impossible to obtain a cake with a uniform moisture content, and causing the mud cloth to wrinkle. However, in this invention, a diffusion plate 3 is provided below the sludge supply port 1 over almost the entire width of the R cloth 2, and the diffusion plate 3 is provided at the center of the front edge in the running direction of the P cloth and at both corners. Since the portion is cut out, the sludge supplied to the center portion does not flow away in the width direction of the mud cloth 2.

Furthermore, the sludge does not stagnate at the edge of the diffusion plate 3 inside the seal plate 4, and the amount of sludge supplied is averaged over the entire width of the sewage cloth, so that the cake thickness can be kept constant.

In addition, the sludge supplied onto the Uezawa cloth 2 as described above is dehydrated when passing through the gravity dewatering zone A, the dewatering drum part B, and the pressure roll part C, and is taken out as a cake from the peeling roll part. It is something that

As is clear from the above description, the present invention has an extremely simple structure and can be manufactured at a low cost compared to conventional feeding devices of this type, and the degree of diffusion can be easily adjusted to accommodate sludge of various properties. This completely solves the problems of conventional belt presses.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of a belt press according to the present invention, Fig. 2 is a vertical sectional view showing the sludge supply section taken out, Fig. 3 is a plan view thereof, and Fig. 4 is a state of sludge stagnation. FIG. 2 is a plan view of the other side of the sludge supply section for explaining the sludge supply section. Code explanation, 1...Sludge supply port, 2...
Uezawa cloth, 3...Diffusion plate, 4...Seal plate.

Claims (1)

[Claims] 1. A pair of upper and lower cloths is freely runnable between a large number of rolls, and the upper cloth 2 below the sludge supply port 1 is arranged at an upward slope in the direction of travel; In a belt press in which the supplied sludge is sandwiched between the sludge cloths and dehydrated under pressure, a sludge cloth 2 below the sludge supply port 1 is provided.
A sludge diffusion plate 3 is placed above the gold mine, and
The width of the diffusion plate 3 in the front and back direction in the lower part of the sludge supply port 1 is narrowed, and seal plates 4, 4 are respectively attached to the left and right sides of the diffusion plate 3, so that the front corner of the diffusion plate 3 in the core part is narrowed. A sludge supply device for a belt press consisting of a notch. 2. The sludge supply device for a belt press according to claim 1, wherein the diffusion plate 2 is made of a rubber plate.