JPS643596Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a feed box that can uniformly supply sludge onto the fabric of a belt press dehydrator.

[Prior art] In dewatering sludge using a belt press,
A uniform supply of sludge over the entire width of the fabric is very important for effective dewatering. Especially when the width of the cloth is wide, it is very difficult to supply sludge uniformly.

In addition, in order to uniformly supply sludge onto the cloth,
As shown in FIG. 1, there is a system in which a storage section 102 is provided within a feed box 101, from which sludge is overflowed and supplied. However, with this method, the sludge pool 103 is agitated by the fallen sludge, and the sludge layer 104 in this area is dug up, making it impossible to supply sludge uniformly.

[Summary of the idea]

The inside of the sludge pool can be drained by immersing the sludge supply pipe into the storage section provided in the main body consisting of a framework, and by opening the sludge outflow hole in the front wall of the storage section below the liquid level in the sludge pool. The purpose of the present invention is to provide a belt press feedbox that uniformly supplies sludge without stirring.

[Example of idea]

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

This invention has a feedbox main body (hereinafter abbreviated as main body) 1 consisting of a frame, and a storage section 2 provided at the rear of this main body 1.

The main body 1 is formed of a frame with a roughly U-shaped cross section with the bottom and front open as shown in Fig. 2, and is placed on a cloth (lower cloth) 3 that runs diagonally upward as shown in Fig. 3 to Fig. 5. Reference numeral 4 denotes a seal material provided at the bottom of the main body 1.

The storage section 2 is located at the rear of the main body 1.
A sludge supply pipe 5 is formed in this storage section 2.
There is an immersion opening.

In addition, a fourth
As shown in Fig. 5, the sludge outflow hole 6 is opened,
The sludge in the storage part 2 is quietly supplied into the pool 1a of the main body 1 in a substantially horizontal direction.

At this time, as shown in FIG. 6, a shielding plate 7 movable in the direction of arrow A is arranged on the front wall 2a of the storage section 2,
By making the opening area of the sludge outflow hole 6 freely adjustable, uniform supply can be achieved even if the amount of inflowing sludge changes. Further, by slanting the upper end of the sludge outflow hole 6, the height of the opening may be changed. Furthermore, the height and width of the opening may be changed independently.

Furthermore, it is desirable to provide a leveling plate 8 on the front part of the main body 1 to even out the sludge supplied onto the cloth 3. In this case, the sludge outflow hole 6
The opening position is below the lower end of the leveling plate 8. Thereby, the opening position of the sludge outflow hole 6 can be located below the liquid level in the pool 1a.

[Effect]

Next, the operation of this invention will be explained.

Sludge to be dewatered by the belt press is once received in the storage section 2 from the sludge supply pipe 5. At this time, since the sludge supply pipe 5 is immersed into the reservoir 2, the stirring force is not so strong, and the sludge supply pipe 5 is immersed in the reservoir 2.
The water level inside is almost uniform, and no droplets are scattered. The sludge in the storage section 2 is then transferred from the sludge inflow hole 6 to the sludge pool 1a of the feed box.
supplied within. The sludge inflow hole 6 is opened below the front wall 2a of the storage section 2 and below the liquid level of the pool 1a facing forward. Therefore, as shown in Fig. 4, sludge is supplied into the pool 1a based on the water level difference A between the liquid level of the pool 1a and the storage section 2, so the lower part of the pool 1a is not agitated more than necessary. , sludge can be uniformly supplied to the entire width of the cloth.

Furthermore, if the opening area, height, shape, etc. of the sludge outflow hole 6 can be adjusted using the shielding plate 7 or the like, sludge can be uniformly supplied into the pool 1a even if the amount of inflowing sludge changes.

In the case where the leveling board 8 is arranged as necessary,
The sludge becomes more uniform.

[Effect of idea]

As described above, according to this invention, a bottomed box-shaped storage section is provided at the rear of the feed box main body that forms a sludge pool on the filter cloth of the belt press.
The bottom side of the sludge pool is immersed in the sludge pool, and a sludge outflow hole is provided in the lower part of the front wall of the storage part to open forward below the liquid level of the sludge pool, and sludge is supplied into the storage part. Since the open end of the sludge supply pipe is immersed in the storage part so as not to face the sludge outflow hole, the sludge supplied from the sludge supply pipe into the storage part can be buffered by the sludge layer in the storage part. and for this reason,
The agitation force within the reservoir by the sludge supplied from the sludge supply pipe is very weak, and the entire sludge layer within the reservoir can be maintained at a calm water level. Moreover, the sludge in the storage section flows out below the liquid level of the sludge pool from the sludge outlet hole that opens below the liquid level of the sludge pool due to the water level difference with the sludge pool. The sludge is supplied quietly from the storage section, and as a result, the sludge pool is not violently agitated.
There is an excellent effect that sludge is supplied to the sludge pool from the storage section almost uniformly and smoothly.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a conventional device, Fig. 2 is a plan view of an embodiment of the invention, Fig. 3 is a longitudinal cross-sectional view schematically illustrating the arrangement of the belt press, and Fig. 4 is a longitudinal cross-sectional view of the same essential parts.
FIG. 5 is a front view of the same, and FIG. 6 is a perspective view of essential parts of another embodiment. DESCRIPTION OF SYMBOLS 1... Main body, 2... Storage part, 2a... Front wall of storage part, 3... Cloth, 5... Sludge supply pipe, 6... Sludge outflow hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A feed box main body that is arranged on the filter cloth of a belt press that runs diagonally upward, and that is composed of a framework with the bottom and front parts open to form a sludge pool; A bottomed box-shaped storage section is provided at the rear of the feedbox main body, the lower part of which is immersed in the sludge pool, and a bottomed box-shaped storage section is provided at the lower part of the front wall of this storage section and opens forward under the liquid level of the sludge pool. A feedbox for a belt press, comprising a sludge outflow hole, and a sludge supply pipe that is immersed in the storage section and held so that its open end does not face the sludge outflow hole. (2) The belt press feedbox according to claim 1, wherein the front wall of the storage section is provided with a shielding plate for adjusting the opening area of the sludge outflow hole. (3) The feedbox for a belt press according to claim 1, wherein a leveling plate is provided in the feedbox main body to level the sludge on the filter cloth.