JPS6239914Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a screw press type dehydrator, especially a type of dehydrator that not only dewaters from the screw outer cylinder but also into the inner cylinder which is the screw shaft. Regarding.

(Prior Art) A screw press type dehydrator that dewaters into an inner cylinder is known, for example, from Utility Model Application No. 112094/1983.

(Problem that the invention attempts to solve) The above invention is to keep a large amount of "liquid" (water) in the "mesh cylinder" (inner cylinder) separated from the "cake" and gradually remove it. It flows out from the drain port. Therefore, the water dehydrated and stored inside returns to the cake, resulting in a low dehydration efficiency.

(Means for Solving the Problems) Therefore, the present invention consists of an outer cylinder having a large number of drainage holes on the circumference, a screw on the outer periphery, and a tapered inner cylinder that is concentrically supported in the outer cylinder and rotates. In the screw press type dehydrator, the inner cylinder has a large number of drain holes provided almost on the entire surface, and the inner cylinder is in contact with the inner periphery of the inner cylinder so that water that has entered the inside through the drain holes can enter and rotate together with the inner cylinder. a hollow shaft which also serves as a drain pipe and a rotary drive shaft of the inner cylinder, and a hollow shaft which is provided so that when the water receiver rotates upward, the water inside flows into the hollow shaft by gravity. It is characterized by being equipped with a waterway.

(Function) The dehydrator of this invention uses the outer cylinder of the screw press.
Since both the inner cylinders have drain holes, the material to be dewatered that has been pushed forward and compressed by the screw is dewatered from the inner and outer peripheries at the same time.

As before, water flowing outward from the drain hole in the outer cylinder falls into a water collection area below the outer cylinder and is discharged from the drain port.

The water that comes out inward from the drain hole of the inner cylinder enters the water receiver provided in contact with the inner circumference of the inner cylinder, and the water receiver rotates together with the inner cylinder and rotates upwards. through the hollow shaft and discharged from the hollow shaft.

(Example) Fig. 1 shows an example of this invention, in which the outer cylinder is 1, the inner cylinder is 2, the screw is 3, the water receiver is 4, the hollow shaft which also serves as a drain pipe is 5, and the water reservoir is 5. , the waterway between the hollow shafts is indicated by 6.

When the material to be dehydrated is put into the input port 7, it moves to the left in Figure 1 due to the rotation of the screw 3, and due to the increase in the diameter of the inner cylinder 2, the material is compressed between the outer and outer cylinders, and the water is pushed out from the drainage holes of the inner and outer cylinders. . Water coming out of the outer cylinder 1 falls into the water collection part 8 and flows out from the drain port 8a.

In contact with the inner periphery of the inner cylinder 2, in this embodiment, a flat box-shaped water receptacle 4 opens as shown in FIGS. 2 and 3.
A water channel 6 emerges from the bottom and leads into the hollow shaft 5.

Since the inner cylinder 2 has a conical shape in this example, the water flowing inward from the drain hole of the inner cylinder 2 flows down to the left in FIG.
and exits from its open end.

The material thus dewatered exits to outlet 9. A hollow shaft 5, which also serves as a drain pipe, is fixed to the inner cylinder 2 by an end plate 10, a stay 11, etc., and rotates the inner cylinder 2 and screw 3 when driven by a pulley 12.

In the embodiments shown in FIGS. 4 and 5, the water receptacle 4 is not of the scooping type, but is of a plurality of enclosures provided along the inner periphery of the inner cylinder 2. That is, inside the conical inner cylinder 2,
By inserting a rather small conical cylinder 4a concentrically and dividing the gap between the two vertically and horizontally by an annular partition member 4b and an axial partition plate 4c, the space in the gap is made into a number of water receptacles 4. The pipe of the water channel 6 that connects the water receiver 4 and the hollow shaft 5 protrudes into the hollow shaft 5 to prevent water once entering the hollow shaft 5 from returning to the water channel 6.

In the embodiment shown in FIGS. 6 and 7, a hollow shaft 5 serves as the conical cylinder 4a of the embodiment shown in FIGS. 4 and 5. Since the hollow shaft 5 is thick and conical, the end portion is a normal shaft 5a that is not hollow, as shown in FIG. 6, and is unified by a stay 11, and a drainage port at the end of the shaft is also secured.

Although a small number of embodiments have been described above, this invention can be varied and applied in a variety of ways depending on the implementation conditions and the well-known techniques of the person in charge, without changing its gist.

(Effects) This idea provides drainage holes in both the outer cylinder of the screw press type dehydrator and the inner cylinder of the screw shaft.
Since the water receiver in contact with the inner circumference of the inner cylinder is connected to the hollow shaft, which also serves as a drain pipe and the inner cylinder drive shaft, through a water channel, the material to be dehydrated is dehydrated from the inside and outside, resulting in high dewatering efficiency and even dewatering inside and outside. . The water that flows out into the inner cylinder side is discharged from the water receiver through the hollow shaft every time the screw rotates, so the water that flows out into the inner cylinder does not return to the material through the drain hole, further improving dewatering efficiency. I raised it. Since the inner cylinder drive shaft also serves as a drain pipe, the improvement objective was achieved with a simple structure.

[Brief explanation of the drawing]

Fig. 1 is an explanatory cross-sectional view of one embodiment of this invention, Figs. 2 and 3 are cross-sectional elevational views and side views of the main parts thereof, and Fig. 4 is
FIG. 5 is a sectional elevational view and a side view of a main part of another embodiment, and FIGS. 6 and 7 are a sectional elevational view and a side view of a main part of still another embodiment. 1... Outer cylinder, 2... Inner cylinder, 4... Water receiver, 5...
...Hollow shaft, 6... Waterway.

Claims (1)

[Claims for Utility Model Registration] A screw press type consisting of an outer cylinder having a large number of drainage holes on its circumferential surface, and a tapered inner cylinder having screw blades on the outer circumference and rotating while being supported concentrically within the outer cylinder. In a dehydrator, the inner cylinder has a water receptacle provided in contact with the inner periphery of the inner cylinder, and a water receptacle provided in contact with the inner periphery of the inner cylinder so that water that enters the interior through the numerous drainage holes provided almost on the entire surface of the cylinder will flow together with the inner cylinder. The rotary drive shaft is characterized by comprising a hollow shaft that also serves as a drain pipe, and a water channel provided so that when the water receiver rotates upward, water inside the water receiver flows into the hollow shaft by gravity. Screw press type dehydrator.