JPS6238729Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention mechanically transforms water-containing particles such as gravel, crushed stone, sand, soil, or mixtures thereof into a solid-liquid without drying or other heating means. This relates to a dehydration device that separates and dehydrates the water.

Prior Art The basic structure of this type of dewatering device is shown in Japanese Patent Publication No. 55-24029 filed by the present applicant. This dehydration device uses air introduced from one end of the water-containing granules put into a long cylindrical dehydration cylinder (pressure-feeding cylinder) to eject them from an opening at the other end (discharge port) and onto a rotating plate facing the discharge port. The granules and moisture are separated by collision, and the moisture passes through a partition plate (solid-liquid separation plate) made of a wire mesh fixed around the rotating plate and is discharged from the liquid chute, while the granules are removed from the fixed chute. We are collecting more.

By the way, the solid-liquid separation plate in the dewatering device is formed into a basket shape that expands toward the discharge port side to form a dehydration basket that rotates integrally with the rotary plate, and the outer peripheral surface of the discharge port of the pressure-feeding cylinder is provided with large and small shapes. The solid-liquid separation function has been improved by fixing the anti-scattering plate to the rotating plate side in a spread-out manner, as disclosed in U.S. Pat. Proposed in No. 86215.

FIG. 4 shows a specific example of the dewatering device according to the above proposal. In the figure, 1 is a casing, which is installed on a pedestal 2. Reference numeral 3 denotes a cylindrical pressure-feeding tube inserted into the casing 1 from the side with approximately half of its total length in a horizontal state, and the outer end of this pressure-feeding tube 3 has an air outlet 3a connected to a blower (not shown). is opened, and a discharge port 3b is opened at the inner end thereof. In addition, slit plates 4 are installed diagonally on the lower surface of the pressure-feeding cylinder 3 at several locations inside and outside the casing 1, and below the slit plate 4 outside the casing 1, a first liquid chute 5 is arranged, A second liquid chute 6 is disposed below the slit plate 4 in the casing 1, and both liquid chute 5 and 6 join together outside the casing 1. Reference numeral 7 denotes a hopper placed at the rear of the pressure-feeding tube 3, and the opening edge 7a is located at the rear of the pressure-feeding tube 3 so that the air flow velocity increases just before the dropping position into the pressure-feeding tube 3 and prevents residual water-containing particles from accumulating. The opening extends to the vicinity of the center and is inclined toward the discharge port 3b. Also, the discharge port 3b of the pressure-feeding cylinder 3
On the outer periphery of the side, a first scattering prevention plate 9 with a small diameter and spread out on a lap toward the rotary plate 8 side, and a second scattering prevention plate 10 with a large diameter located behind it are fixedly installed. There is.

The rotating plate 8 is disposed inside the casing 1 so as to face the discharge port 3b, and is fixed to the inner end of the rotating shaft 11. It is configured to be rotationally driven by a drive device such as a motor (not shown) via the motor.

13 is a dehydration basket that rotates integrally with the rotary plate 8;
It has a shape that expands toward the air outlet 3a side of the pressure cylinder 3 so as to have a predetermined distance from the outer periphery of the anti-scattering plates 9 and 10, and solid-liquid separation that allows only moisture to pass through while preventing particles from passing through. It has a function. 16 is a solid collection chamber in the casing 1 into which the dehydrated particles flow; 17 is a solid chute provided below; 1
8 is a liquid collecting chamber into which water separated from the granules flows, and 19 is a liquid chute provided below the chamber.

Problems to be Solved by the Invention The large and small scattering prevention plates 9 and 10 fixed to the discharge port 3b of the pressure-feeding cylinder 3 are spread out in the shape of a flap toward the rotary plate 8 as shown in the figure. In the process of dewatering the raw material discharged from 3, the sand, pebbles, soil, and sludge fed into the base corners 14 and 15 of the anti-scattering plates 9 and 10 become clogged, and over time, the sand and other clogs become clogged. spreads toward the outer circumference, and the first
The repulsion effect of the second anti-scattering plate 9 was lost, and the second anti-scattering plate 10 had a disadvantage in that its function of damming up moisture was reduced. As a result, the frequency of cleaning increases, which causes a decrease in work efficiency.

Means for Solving the Problem The water-containing granules introduced into the pressure-feeding tube 23 are injected from the outlet 23b at the other end by air introduced from the air outlet 23a at one end of the pressure-feeding tube 23. The discharge port 23b of 23 is collided with a rotary plate 25 disposed at a position opposite to the discharge port 23b. Dehydration basket 34 expanded in a rasp shape
In this dehydration apparatus, scattering prevention plates 26 and 27 are fixed to the outer periphery of the discharge port 23b of the pressure-feeding cylinder 23 so as to stand upright with respect to the pressure-feeding cylinder 23.

Embodiments This invention will be explained below based on illustrated embodiments.

In FIGS. 1 and 2, 21 is a casing, which is installed on a pedestal 22.

Reference numeral 23 denotes a cylindrical pressure-feeding tube inserted into the casing 21 from the side with approximately half of its total length in a horizontal state, and the outer end of this pressure-feeding tube 23 has an air outlet 23a connected to a blower (not shown). is opened, and a discharge port 23b is opened at the inner end thereof. Reference numeral 24 denotes a hopper placed at the rear of the pressure-feeding tube 23, and the opening edge 24 is designed to increase the air flow velocity immediately before the dropping position into the pressure-feeding tube 23 and prevent the water-containing particles from accumulating and remaining.
a enters near the center of the pressure-feeding cylinder 23 and exits the discharge port 2.
The opening is inclined toward the 3b side. Also, on the outer periphery of the discharge port 23b side of the pressure-feeding cylinder 23, there is a first scattering prevention plate 26 having a small diameter and facing the rotary plate 25.
and a large-diameter second scattering prevention plate 2 located behind it.
7 is fixed upright to the pressure feeding cylinder 23.

As shown in FIG.
3b, the flange portion 25a, an annular flange plate 28 that overlaps the back side of the flange plate 28, and a bossed flange plate 30 fitted to the rotating shaft 29 are connected at several places in the circumferential direction. By tightening bolts 31, it is fixed to the rotating shaft 29, and is rotationally driven by a drive device such as a motor (not shown) via a pulley 32 attached to the tip of the rotating shaft 29 that protrudes outside the casing 21. It is configured as follows. 33 is a bearing case.
The rotary plate 25 may have other shapes, such as a plate shape, a convex shape, a concave shape, or a conical shape, in addition to the dish shape shown in the figure, which has a lower center. It may be adopted depending on the situation.

34 is a dewatering basket that rotates integrally with the rotary plate 25, and the air outlet 2 of the pressure feeding tube 23 is spaced at a predetermined distance from the outer periphery of the scattering prevention plates 26 and 27.
The basket body 35 has a shape that expands toward the side 3a, and has a solid-liquid separation function that allows only moisture to pass through while preventing grains from passing through, a basket frame 36 that attaches and holds this, and a reinforcing plate that covers the inner surface of the base. 37, the basket frame 3
The annular bottom frame portion 36a of No. 6 and the annular flange plate 28 are fixed to the rotating plate 25 by tightening the annular bottom frame attachment 36a and the mounting piece 37a of the reinforcing plate 37 with bolts 38a and 38b, respectively. has been done.

39 is a casing 21 into which the dehydrated granules flow.
The solid collecting chamber 40 inside is a solid chute provided below the solid collecting chamber 39. Reference numeral 41 indicates a liquid collection chamber into which water separated from the granules flows, and reference numeral 42 indicates a liquid chute provided below the liquid collection chamber 41.

Therefore, in order to dehydrate a water-containing fluid with the dehydrator having the above configuration, the rotating plate 25 and the dehydrating basket 3 are required.
4 are integrally rotated, and while feeding air at a predetermined flow rate from the air outlet 23a into the pressure-feeding tube 23, water-containing granules are introduced into the pressure-feeding tube 23 from the hopper 24,
The air is forced to the discharge port 23b side by the air flow. After being ejected from the discharge port 23b, this pumped water-containing fluid collides with the rotary plate 25 and rebounds, and then the first
The particles collide with the first scattering prevention plate 26 and the rotary plate 25 again, and in the process of repeating this collision, the particles and water are completely separated, and the particles are separated between the first scattering prevention plate 26 and the dewatering basket 34. From the gap, it gradually moves toward the outer circumference,
Furthermore, the solids are guided to the inclined inner surface by the centrifugal force of the rotating dehydration basket 34, enter the solid collection chamber 39 in the casing 21 in front of the dehydration basket 34, and are recovered in a dehydrated state from the solid chute 40 below. . Then, in the process of the particles repeatedly colliding between the rotating plate 25 and the first anti-scattering plate 26,
Even if the particles are fed into the base corner portion 43 of the first scattering prevention plate 26, since the scattering prevention plate 26 is upright with respect to the pressure feeding tube 23, the particles fed into the base corner portion 43 will not be scattered. , the base corner portion 43
It never gets clogged. Further, the water separated from the water-containing particles due to the collision between the rotary plate 25 and the first anti-scattering plate 26 passes through the dehydration basket 34 and enters the fluid collection chamber 41 on the back side thereof. It is discharged from the lower liquid chute 42.

Furthermore, among the water-containing particles that collided with the rotating plate 25,
Some of the particles and the water that has been scattered in the form of a mist are stopped by the second scattering prevention plate 27 due to the air flow, but even if the particles are blocked, the second scattering prevention plate 27 is upright with respect to the pressure-feeding cylinder 23, so the particles fed into the base corner part 44 are scattered and the base corner part 44 is not clogged, and the moisture is absorbed by the second scattering prevention plate. 27 and flows into the liquid chute 42 .

FIG. 3 shows another embodiment, in which the same parts as in the previous embodiment are designated by the same reference numerals, and their explanation will be omitted. That is, in this embodiment, slit plates 45 are obliquely attached to the lower surface of the pressure-feeding cylinder 23 at several locations inside and outside the casing 21, and the first liquid chute 46 is disposed below the slit plate 45 outside the casing 21. A second liquid chute 47 is disposed below the slit plate 45 inside the casing 21, and both liquid chute 46 and 47 are joined outside the casing 21.

Effects of the invention According to the invention, sand, pebbles,
It can completely prevent clogging with dirt, sludge, etc. Therefore, it becomes possible to maintain the initial repulsion effect and moisture damming function of the scattering prevention plate indefinitely, and the frequency of cleaning is accordingly reduced, making it possible to significantly improve work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of a dewatering device according to the present invention, FIG. 2 is a vertical cross-sectional view of the main part of FIG. 1, and FIG. 3 is a schematic vertical cross-sectional view showing another embodiment. FIG. 4 is a longitudinal sectional view of a conventional dewatering device. 23... Conveyance tube, 23a... Ventilation port, 23b...
...Discharge port, 25...Rotary plate, 26, 27...Scatter prevention plate, 34...Dehydration basket.

Claims (1)

[Scope of utility model registration request] The water-containing granules put into the pressure-feeding cylinder are injected from the outlet at the other end by air introduced from the air outlet at one end of the pressure-feeding cylinder, and the rotating collides with the plate, is arranged around the rotating plate and rotates as one with the rotating plate, and
In the dewatering device that separates solid and liquid through a dewatering basket that expands in a shape of a bulge on the side of the pressure-feeding cylinder, a scattering prevention plate is fixed upright to the pressure-feeding cylinder around the outer circumference of the discharge port of the pressure-feeding cylinder. A dehydration device featuring: