JPS643594Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a sludge feeding device in a belt press. In particular, this invention proposes a device that is highly effective in feeding sludge that has been dehydrated to some extent and has poor fluidity. be. Conventional belt press sludge supply devices supply fluid sludge onto a trough or rubber plate provided in the gravity dewatering zone, flow it from side to side, and spread it all over the dishcloth. This method is effective for fluidized sludge, but sludge that has been dehydrated to some extent and has poor fluidity cannot be diffused at all. It is well known that the higher the concentration of the supplied sludge (i.e., the poorer the fluidity), the more dewatering can be achieved with a belt press. However, as mentioned above, if the fluidity is poor, It is impossible to supply uniform sludge. This invention makes it possible to easily and uniformly supply such highly concentrated sludge.

Below, we will explain this idea in detail based on the drawings.
As shown in the figure, the structure is such that a pair of upper and lower cloths 1 and 2 are hung between a large number of parallel rolls so that they can run freely.
In a belt press, sludge is supplied to a gravity dewatering zone formed on the lower cloth 2, and the sludge is run between the rolls with the sludge sandwiched between the upper cloth 1 and the sludge is dehydrated. A box-shaped hopper 3 with an open bottom is placed in the gravity dehydration zone A formed on the hopper 2, and the lower part of the front wall of the hopper 3 located on the side in the traveling direction of the cloth 2 is approximately
A notch is provided across the entire width of the hopper 3, and an adjustable plate 5 is provided on the front wall of the hopper 3, which can be moved up and down.
A laterally movable adjustment plate 10 is provided inside both side walls of the notch 4, so that the height and width of the notch 4 can be adjusted freely. FIG. 2 shows the adjustment mechanism, and reference numeral 5 in the figure is an adjustment plate, which is connected to a lifting lever 6 by a hanging rod 7. The lifting lever 6 is movable up and down along a guide plate 8 provided on the hopper 3. Further, sealing materials 9 made of rubber or the like are attached to the left and right lower edges of the hopper 3 and the lower edge on the rear side of the vehicle, and are adapted to come into sliding contact with the lower cloth 2. Furthermore, FIG. 3 shows an example of a mechanism for adjusting the width of the sludge supply, in which reference numeral 10 denotes an adjustment plate whose upper edge is pivotally connected to the hopper;
is its adjustment bolt. And adjustment bolt 1
1, the lower end of the adjustment plate 10 can be moved inward. FIG. 4 shows a hopper equipped with a sludge crushing mechanism, which is used for sludge with extremely poor fluidity or block-like sludge. The illustrated one is equipped with a rotating wheel 12 with claws for crushing.

This device is constructed as described above, and therefore, the sludge supplied to the hopper 3 falls onto the lower cloth 2, and as the lower cloth 2 advances, the notch 4
The material is transported through a pressure roller and then sent to a pressure roll section behind it. That is, the sludge supplied into the hopper 3 is pushed out from the notch 4 with a uniform thickness,
It faces the pressurizing part, and its thickness can be adjusted extremely easily by moving the adjusting plate 5 up and down. If the sludge has poor dewatering properties and spreads laterally at the pressure roll and leaks from the left and right ends of the cloth 2, the adjustment plate 3 shown in FIG. By narrowing the width, it is possible to concentrate the supply to the center of the cloth 2.However, in the case of sludge that does not spread easily,
If a crushing device as shown in FIG. 4 is provided, it is possible not only to spread the material, but also to spread it laterally at the notch 4 to supply a uniform thickness.

Conventionally, in this type of belt press, when supplying sludge, the concentration of the sludge is thin, and its fluidity is used to spread it on the cloth, so the width is equivalent to the sludge supply port or cloth. Using a trough, it was difficult to supply uniformly while requiring an expensive supply device, but with this invention, by devising the hopper that was conventionally required, This made it possible to uniformly supply highly concentrated sludge, which had been difficult. In the above-described embodiment, the opening of the notch 4 is manually adjusted using the adjustment plate 5, but this can be automatically adjusted using motor power or the like in conjunction with fluctuations in the sludge concentration. Of course it can be done like this.

[Brief explanation of drawings]

Figure 1 is a schematic side view of a belt press with this invention, Figure 2 is a slope view of its sludge supply hopper, Figure 3 is a cross-sectional front view of another embodiment of the sludge supply hopper, and Figure 4 is a It is also a vertical side view. Code explanation, 1...cloth, 2...lower cloth, 3...
Hopper, 4... Notch, 5... Adjustment plate, 10...
...adjustment board.

Claims (1)

[Scope of utility model registration request] A pair of upper and lower cloths 1,
2 is hung freely running, and sludge is supplied to the gravity dewatering zone A formed on the lower cloth 2. With the sludge sandwiched between the upper cloth 1 and the upper cloth 1, the sludge is run between the rolls to remove the sludge. In a belt press designed to dehydrate, a box-shaped hopper 3 with an open bottom is provided in a gravity dehydration zone A formed on the lower cloth 2.
is placed on the hopper 3, the lower part of the front wall of the hopper 3 located on the side in the direction of movement of the cloth 2 is cut out almost across its entire width, and an adjustment plate 5 that can be moved up and down is provided on the front wall of the hopper 3. A sludge supply device for a belt press, in which horizontally movable adjustment plates 10 are provided inside both side walls of a hopper 3, and the height and width of the notch 4 can be freely adjusted.