JPS6134016Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a mechanical method for processing water-containing granules such as gravel, crushed stone, sand, other granules, or mixtures thereof without drying or other heating means. This invention relates to a device for preventing adhesion and accumulation of particles in a dehydrator that performs solid-liquid separation and dehydration.

Prior Art The basic structure of this type of dehydrator is shown in Japanese Patent Publication No. 55-24029 filed by the present applicant. This dehydrator uses air introduced from one end of the long cylindrical dehydrating cylinder (pressure-feeding cylinder) to inject water-containing granules through an opening at the other end (discharge port), and a rotating body facing the discharge port. The granules and water are separated by colliding with the rotating body, and the water is passed through the partition plate (solid-liquid separation plate) around the rotating body and discharged from the liquid chute.
The granules are collected from a solid collecting chamber in front of the solid-liquid separation plate through a solid chute below the solid collecting chamber.

However, since the solid-liquid separated granules contain a slight amount of moisture, especially when the granules contain fine particles such as sand or soil, or are mainly composed of these fine particles, There was a problem that the deposits remained on the inner surface of the solid collection chamber, and as the dehydration process continued, the deposits accumulated, reducing the recovery rate, and if the accumulation was significant, it would interfere with the operation of the dehydrator.

Problems to be solved by the invention This invention was made to solve the above-mentioned conventional problems, and is a device for preventing the adhesion and accumulation of particles in a dehydrator, which prevents particles from adhering and accumulating inside the solid collection chamber. The purpose is to provide

Means for Solving the Problems This invention allows the water-containing particles introduced into the pressure-feeding tube 3 to be transported from the outlet 3b at the other end by an air flow introduced from the air outlet 3a at one end of the pressure-feeding tube 3. is injected and collides with a rotary plate 5 installed at a position facing the discharge port 3b of the pressure-feeding cylinder 3, and is arranged around the rotary plate 5 and rotates integrally with the rotary plate 5. Solid-liquid separation is carried out via a solid-liquid separation plate 10 that expands in a shape on the side of the pressure-feeding cylinder, and the granules are transferred to the solid-liquid separation plate 1.
In a dehydrator that collects moisture from a liquid collection chamber 15 in front of the front side of the solid-liquid separation plate 10 through a liquid chute 17 below, and discharges moisture from a liquid collection chamber 13 on the back side of the solid-liquid separation plate 10 through a liquid chute 16 below, a solid collecting chamber 15 having a circular inner circumferential wall concentric with the pressure feeding tube 3; and a pressure feeding tube 3 protruding within the solid collecting chamber 15 so as to surround the protruding base of the pressure feeding tube 3. Concentric annular projection 19
a rotating ring body 21 rotatably fitted in the annular protrusion 19; a rotating ring body 21 extending radially on the outer surface of the rotating ring body 21 and fixed to the tip in a cantilevered manner;
This apparatus is also comprised of a horizontal bar-shaped scraper 29 equipped with a large number of claws 28 whose protrusion height is adjustable, and means for driving the rotating ring body 21.

Embodiments This invention will be explained based on embodiments shown in the drawings.

In the figure, 1 is a casing installed on a pedestal 2, 3 is a cylindrical pressure-feeding tube inserted into the casing 1 horizontally from the side for approximately half of its total length, and the outer end of this pressure-feeding tube 3 is A blower port 3a connected to a blower (not shown) is provided, and a discharge port 3b is provided at the inner end thereof. Reference numeral 4 denotes a hopper placed at the rear of the pressure-feeding cylinder 3, and the opening edge 4a is configured to prevent the water-containing particles from being accumulated and remaining by increasing the air flow velocity just before the position where the water-containing particles are introduced into the pressure-feeding cylinder 3. It protrudes to the vicinity of the center of the cylinder 3 and opens at an angle toward the discharge port 3b. Further, on the outer periphery of the discharge port 3b side of the pressure-feeding cylinder 3, there are fixedly installed a reflecting plate 6 which extends in a wrap-like manner toward the rotary plate 5, and a scattering prevention plate 7 located behind the reflecting plate 6.

The rotating plate 5 is arranged in the casing 1 so as to face the discharge port 3b, and is driven by a drive device such as a motor (not shown) via a pulley 9 attached to the tip of a rotating shaft 8 that protrudes outside the casing 1. It is configured to be rotationally driven. The rotary plate 5 may have various shapes other than the dish shape with a low center as shown in the figure, such as a flat plate, a convex shape, a concave shape, and a conical shape. Reference numeral 10 denotes an annular solid-liquid separation plate located around the rotary plate 5 and expanding toward the pressure cylinder 3 side so as to surround the reflection plate 6 and the anti-scattering plate 7;
It consists of a mesh plate such as a wire mesh, a perforated plate, a slit plate made of a collection of rods forming a large number of slits, etc., and has the function of allowing only moisture to pass through without passing through the granules to be dehydrated. The solid-liquid separation plate 10 serves as a lever and constitutes a side surface of a dehydration basket 11 that rotates integrally with the rotary plate 5.

The interior of the casing 1 includes a substantially truncated conical distribution chamber 12 inside the dehydration basket 11 , a liquid collection chamber 13 on the back side of the dehydration basket 11 , and a liquid collection chamber 13 located in front of the opening side of the dehydration basket 11 and integrated into the distribution chamber 12 . It is divided into a solid collection chamber 15 which communicates with the liquid collection chamber 13 laterally and is partitioned off by a partition wall 14. A liquid chute 16 is provided below the liquid collecting chamber 13, and a solid chute 17 is provided below the solid collecting chamber 15. Reference numeral 18 denotes an inspection door formed at the top of each of the liquid collection chamber 13 and the solid collection chamber 15.

As shown in FIG. 5, the solid collecting chamber 15 is provided with a circular inner circumferential wall 15a that is concentric with the pressure-feeding tube 3 that passes through it, and is concentric with this so as to surround the protruding base of the pressure-feeding tube 3 into the casing 1. An annular protrusion 19 is provided to protrude from the inner surface of the casing 1. 19a is a reinforcing frame piece of the annular protrusion 19. A chain 20 is wound around the outer circumferential surface of the annular protrusion 19, and a rotary ring body 21 is rotatably fitted around the outer circumference of the chain 20, rolling into contact with a roller 20a pivotally attached to the chain 20. There is. 22 is ring body 2
An annular protrusion 19a that protrudes from the outer peripheral surface of the annular protrusion 19 is an annular sliding contact material that abuts against the lower inner surfaces of the both side pieces 21a and 21b of 1 to position them in the axial direction.
It is maintained at Engagement pins 23 projecting outward in the radial direction are fixed at predetermined intervals to the upper inner surface of the side piece 21a of the ring body 21 on the casing 1 side. A pin gear 26 is fixed to the inner end of the casing 1 of a shaft 25 which is rotationally driven via a motor 24.
It meshes with the Further, on the outer surface of the ring body 21, three support arms 27 that protrude in the radial direction are provided upright at an angle of 120 degrees, and each support arm 27 has a large number of claws at the upper end whose protrusion height can be adjusted. A horizontal bar-shaped scraper 29 with 28 is cantilevered. 27a is an auxiliary support arm, and 30 is a bearing. Thus, the scraper 29 rotates the pin gear 26 by driving the motor 24, and when the ring body 21 is rotated via the engagement pin 23 that meshes with the pin gear 26, the claws 28 move into the solid collection chamber 15. It is threaded along the inner circumferential wall 15a in sliding contact with the circumferential wall 15a or in close proximity to the circumferential wall 15a with a slight gap.

In the dehydrator having the above configuration, in order to dehydrate the water-containing granules, the rotary plate 5 and the dehydration basket 11 are rotated, and while air is introduced into the pressure tube 3 from the air outlet 3a, the water-containing grains are removed from the popper 4. The body is put into the pressure-feeding cylinder 3, and is forced to the discharge port 3b side by an air flow, and is injected from the discharge port 3b. The injected water-containing granules collide with the rotating plate 5, bounce back, collide with the reflecting plate 6, and collide with the rotating plate 5 again. In the process of repeating this collision, the granules and water separate, and the granules are It gradually pops out from the gap between the reflection plate 6 and the solid-liquid separation plate 10, further moves along the slope of the solid-liquid separation plate 10, passes through the gap between the scattering prevention plate 7 and the solid-liquid separation plate 10, and enters the solid collection chamber 15. and is collected through the solid chute 17 in a dehydrated state. Although moisture scatters within the distribution chamber 12, the scattering prevention plate 7 prevents moisture from entering the solid collection chamber 15, and the solid-liquid separation plate 10
, enters the liquid collection chamber 13 and is discharged to the outside through the liquid chute 16 . During this dehydration process, some of the particles, especially fine particles, are removed from the solid collecting chamber 15.
However, by rotating the scraper 29 at low speed or intermittently, the claws 28 scrape off the deposits, and the solid chute 17 below is scraped off. It falls and is collected.

In addition, in this invention, the shape of the scraper 29 and the manner in which it is applied can be changed in various ways other than those in the above-mentioned embodiments. Alternatively, a notch and a liquid chute located below the cutout may be provided on the lower surface of the pressure-feeding cylinder 3, and a portion of the water released during the pressure-feeding process of the water-containing particles may be discharged to the outside through the cutout and the liquid chute.

Effects of the invention The device for preventing adhesion and accumulation of granules in a dehydrator according to this invention prevents water-containing granules fed into the pressure-feeding cylinder.
The air flow introduced from the air outlet at one end of the pressure tube causes it to be ejected from the outlet at the other end, and collides with a rotary plate installed at a position facing the discharge port of the pressure tube, causing the air to flow around the rotary plate. The solid-liquid separation plate rotates together with the rotary plate and extends in a wrap-like manner on the side of the pressure-feeding cylinder to separate the solid and liquid, and the granules are separated from the solid-liquid separator plate in front of the surface side of the solid-liquid separation plate. In a dehydrator that collects water from a solid collecting chamber through a lower solid chute and discharges water from a liquid collecting chamber on the back side of a solid-liquid separation plate through a lower liquid chute, a circular inner wall concentric with the inner peripheral wall and the pressure feeding cylinder is used. a solid collecting chamber as a peripheral wall, an annular protrusion concentric with the pressure feeding cylinder protruding within the solid collecting chamber and surrounding the protruding base of the pressure feeding cylinder, and rotatably fitted into the annular protrusion. a horizontal bar-shaped scraper provided with a number of claws extending radially from the outer surface of the rotating ring body, fixed in a cantilever manner to the tip thereof, and having adjustable protrusion height; Since the device is configured with a means for driving a rotating ring, particles that adhere to and accumulate on the inner surface of the solid collection chamber during the dehydration process can be scraped off and collected by the scraper. Therefore, according to this invention, it is possible to prevent a decrease in the granule recovery rate due to the above-mentioned adhesion, and it is possible to avoid a situation in which the operation of the dehydrator is hindered due to the adhesion and accumulation of granules.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a schematic vertical cross-sectional view of the entire dehydrator, Figure 2 is a vertical cross-sectional view of the main parts, Figure 3 is a vertical cross-sectional view showing the main parts of the adhesion accumulation prevention device, and Figure 4 is the drive mechanism of the adhesion accumulation prevention device. FIG. 5 is a cross-sectional view taken along the - line in FIG. 2. 3... Pressure feeding tube, 3a... Air blowing port, 3b... Discharge port, 5... Rotating plate, 10... Solid-liquid separation plate, 13...
...Liquid collecting chamber, 15...Solid collecting chamber, 16...Liquid chute, 17...Solid chute.

Claims (1)

[Scope of utility model registration request] The water-containing granules introduced into the pressure-feeding tube are ejected from the outlet at the other end by an air flow introduced from the air outlet at one end of the pressure-feeding tube, and the pressure-feeding tube is installed at a position opposite to the outlet of the pressure-feeding tube. solid-liquid separation via a solid-liquid separation plate that is arranged around the rotary plate, rotates together with the rotary plate, and expands in a wrap shape toward the pressure cylinder side. In a dehydrator, in which granules are collected from a liquid collection chamber in front of the surface side of a solid-liquid separation plate through a liquid chute below, and water is discharged from a liquid collection chamber on the back side of the solid-liquid separation plate through a liquid chute below. , a solid collecting chamber having an inner circumferential wall concentric with the pressure-feeding cylinder, and an annular protrusion concentric with the pressure-feeding cylinder provided within the solid-collecting chamber and protruding so as to surround the protruding base of the pressure-feeding cylinder. a rotary ring body rotatably fitted in the annular protrusion, and a rotary ring body extending radially on the outer surface of the rotary ring body, fixed to the tip in a cantilevered manner, and having an adjustable protrusion height. A device for preventing adhesion and accumulation of particles, comprising a horizontal bar-shaped scraper equipped with a large number of claws, and means for driving the rotating ring body.