JPS6134017Y2 - - 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 powders, or mixtures thereof without drying or other heating means. This invention relates to a dehydration basket in a dehydration device that performs solid-liquid separation and dehydration.

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 send them to 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) fixed around the rotating body and is discharged from the liquid chute, while the granules are recovered from the solid chute. It's like this.

On the other hand, there has already been a device in which the solid-liquid separation function has been improved by forming the solid-liquid separation plate in the above-mentioned dehydration device into a cage shape that expands toward the above-mentioned discharge port side to create a dehydration cage that rotates integrally with the above-mentioned rotary plate. This was proposed in Utility Application No. 58-3919 filed by the present applicant.

Purpose of the invention This invention aims to further improve the dewatering basket of the above-mentioned proposed device.It is easy to transport and handle, and in the event of partial damage, only the damaged part can be replaced. The purpose is to provide dehydration baskets with

Structure of the device In this device, the water-containing granules introduced into the pressure-feeding tube 3 are ejected 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, and the The cylinder 3 is made to collide with a rotary plate 8 disposed at a position facing the discharge port 3b, and is arranged around the rotary plate 8 and rotates integrally with the rotary plate 8, and on the side of the pressure-feeding cylinder. Dehydration basket 1 that expands into a shape
7, the dehydration basket 17 is connected to a basket frame 19 fixed to the rotary plate 8.
, a basket body 18 having a solid-liquid separation ability and consisting of a plurality of radially divided upper plate members 22 that are removably held on the inner surface of the basket frame 19;
9 and a reinforcing plate 20 made up of a plurality of divided pieces 33 that cover the inner bottom periphery of the basket body 18.

Embodiments Hereinafter, this invention will be explained based on illustrated embodiments.

In FIGS. 1 and 2, 1 is a casing installed on a frame 2, and 3 is a cylindrical pressure-feeding tube inserted into the casing 1 from the side with approximately half of its total length flat. An air outlet 3a connected to an air blower (not shown) is provided at the outer end of the pressure-feeding tube 3, and a discharge port 3b is provided at the inner end thereof. In addition, slit plates 4 are obliquely fitted into 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. Incidentally, instead of the slit plate 4, a notch may be simply provided. Furthermore, depending on the type of water-containing fluid, such as when the water-containing fluid is mainly composed of small particles such as sand or soil, the slit plate 4, notch, and first and second liquid chute 5, 6 may not be provided. good. 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 center of the pressure-feeding tube 3 so that the air flow velocity increases immediately before the dropping position into the pressure-feeding tube 3 and prevents residual water-containing fluid from accumulating. It penetrates into the vicinity and opens at an angle so as to face the discharge port 3b side. In addition, on the outer periphery of the discharge port 3b side of the pressure-feeding cylinder 3, a reflecting plate 9 is expanded in a shape of a flap toward the rotary plate 8 side.
and a scattering prevention plate 10 located behind it are fixedly installed.

The rotary plate 8 is arranged in the casing 1 so as to face the discharge port 3b, and has a flange portion 8a, an annular flange plate 11 that overlaps the back side of the flange portion 8a, and a rotating shaft 12.
By tightening the bossed flange plate 13 fitted to the flange plate 13 with bolts 14 at several locations in the circumferential direction, it is fixed to the rotating shaft 12, and the casing 1 of the rotating shaft 12 is fixed.
It is configured to be rotationally driven by a drive device such as a motor (not shown) via a pulley 15 attached to an outwardly protruding tip. 16 is a bearing case. In addition, the rotary plate 8 may have a flat plate shape, a convex shape,
Other shapes such as a concave shape and a conical shape may be adopted depending on the properties of the water-containing particles and the operating conditions of the dehydrator.

Reference numeral 17 denotes a dewatering basket that rotates integrally with the rotary plate 8, and has a shape that expands toward the pressure feeding cylinder 3 side so as to have a predetermined distance from the outer peripheral edges of the reflection plate 9 and the scattering prevention plate 10. It consists of a basket body 18 having a solid-liquid separation ability that allows only moisture to pass through, a basket frame 19 that attaches and holds this body, and a reinforcing plate 20 that covers the inner bottom periphery. The annular flange plate 11 and the mounting piece 20a of the reinforcing plate 20 are fixed to the rotating plate 8 by tightening them with bolts 21a and 21b.

As shown in FIG. 3, the basket body 18 is divided into eight plate-shaped members 22 that are equally divided in the radial direction. As shown in FIG. 4, this plate piece-like member 22 is made up of a peripheral frame 23 and a mesh plate 24 such as a wire mesh stretched over it, and the back surface of a strip 23a with both sides of the peripheral frame 23 protruding toward the rear side. L-shaped mounting pieces 25 are fixed at two locations on each side by welding or the like. On the other hand, as shown in FIG. 3, the basket frame 19 has four annular frame members 26a, 2 whose diameters increase in the order of the bottom, two middle members, and the upper edge.
6b, 26c, and 26d are connected by eight rigid frame members 27, and each rigid frame member 27 has mounting pieces 28 fixed at two locations on the outer surface. The dewatering basket 17 is assembled by screwing each attachment piece 25 to the attachment piece 28 of the basket frame 19 with the strips 23a of the plate member 22 in contact with each other.

5 and 6 show a second embodiment of the plate member 22. FIG. This plate-shaped member 22 has a large number of plate-shaped bars 29 arranged in parallel between the upper and lower frame portions 27a, 27b of the peripheral frame 27 and the intermediate frame 28, and the gap T between each bar 29 is subjected to dehydration treatment. It is adjusted to allow only moisture to pass through, not the granules. 30 is the peripheral frame 27
Each bar 29 is fixedly supported by welding or the like on the back side by a support rod installed between the both side frame portions 27c, and L-shaped mounting pieces 25 are provided at two locations on each side of the back side of the both side frame portions 27c. is fixed. In addition to the flat plate shape shown in the figure, the bar 29 may have other shapes such as one with a narrower width on the back side, one with a pointed back side, or a roughly wedge-shaped cross section with a pointed back side. Can be used. In addition, the bar 29 may be made of wear-resistant steel, for example.
Use wear-resistant materials such as high chromium steel, ceramic materials, and arsenic nitride.

FIG. 7 shows a third embodiment of the plate piece-like member 22, in which a large number of pores 31 are formed by punching a metal plate or the like.
Strips 32a and 32b protruding toward the back side are fixed to both sides and the middle part of the perforated plate 31 in which a is formed, and L-shaped mounting pieces 25 are fixed at two places each on the back side of both side strips 32a. It becomes. Pores 3 of this perforated plate 31
1a is set to a size that allows only the moisture of the water-containing particles to pass through. In this example, the plate piece member 22
The basket body 18 is formed using four sheets.

FIGS. 8A and 8B show an example of the reinforcing plate 20, which is composed of a plurality of divided pieces 33 divided in the radial direction so as to correspond to each of the plate-like members 22 constituting the basket body 17. Each divided piece has a substantially L-shaped cross section, and both side surfaces 33a are formed wide to improve stability when abutting each other, and mounting pieces 20a are protruded at two locations on the bottom of the back side.

In the above embodiment, the plate-shaped members 22 constituting the basket body 18 of the dehydration basket 17 are connected via the basket frame 19, but a simple ring material may be used instead of the basket frame 19. It is also possible to directly connect the plate-like members 22 to form the dewatering basket 17.
It is also possible to have a structure that forms. Furthermore, dehydration basket 17
is not limited to the four and eight divisions exemplified above, but may be divided into two or more divisions, and the number of divisions is appropriately selected depending on the scale of the dehydration apparatus and the like.

In order to dehydrate the water-containing granules using such a dehydrator, the rotating plate 8 and the dehydrating basket 17 are rotated together, and air is fed from the hopper 7 into the pressure feeding cylinder 3 through the air outlet 3a at a predetermined flow rate. The water-containing granules are introduced into the pressure-feeding tube 3 and are forced-feeded to the discharge port 3b side by an air flow. A portion of the water liberated during this pumping process is discharged to the outside from the first and second liquid shoots 5 and 6 through the slits in the slit plate 4. Next, the water-containing particles ejected from the discharge port 3b collide with the rotating rotary plate 8, bounce back, collide with the reflecting plate 9, and collide with the rotary plate 8 again, and in the process of repeating this collision, the particles and water are are completely separated, the grains gradually move toward the outer circumference through the gap between the reflecting plate 9 and the dehydration basket 17, and the rotating basket 1 is further rotated.
The solid collecting chamber 34 in the casing 1 in front of the rotating cage 17 is guided by the centrifugal force of the rotating cage 17 to its inclined inner surface.
The water enters the solid chute 35 below and is recovered in a dehydrated state. Further, the water separated and scattered from the granules passes through the dehydration basket 17, enters the liquid collection chamber 36 on the back side thereof, and is discharged from the third liquid chute 37 below. The reinforcing plate 20 has a function of preventing the particles from strongly colliding with the dehydration basket 17 and damaging it when the particles move toward the dehydration basket 17 due to the repetition of the collisions.

Effects of the invention Since the dewatering basket of the dehydrator according to the invention is divided into a plurality of plate-like members divided in the radial direction as described above, it is easy to handle without being bulky during transportation, etc. In addition, if a part of the dehydration basket is damaged during use, only the damaged plate member can be replaced, so there is no need to replace the entire dehydration basket, making replacement work easy and maintenance cost-effective. It has the great advantage of being In addition, by wearing out the reinforcing plate, it is possible to prevent abrasion and damage to the dehydrating basket, especially at the corners, when particles move toward the dehydrating basket due to repeated collisions of particles. This structure allows the reinforcing plate to be replaced.

[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 dewatering device, Figure 2 is a vertical cross-sectional view of the main parts, Figure 3 is an exploded perspective view of the dewatering basket, and Figure 4 is a vertical cross-sectional view of the entire dewatering device.
The figure is a perspective view of the first embodiment of the plate-like member, FIG. 5 is a perspective view of the second embodiment of the plate-like member, and FIG.
7 is a perspective view of the third embodiment of the plate-shaped member; FIGS. 8A and B
is a perspective view of a reinforcing plate. 3... Pressure feeding cylinder, 3a... Air blowing port, 3b... Discharge port, 8... Rotating plate, 17... Dehydration basket, 22... Platy piece member.

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 air flow introduced from the air outlet at one end of the pressure-feeding tube, and placed at a position facing the outlet of the pressure-feeding tube. Dehydration is carried out by colliding with a rotary plate that has been removed, and separating solid and liquid through a dehydration basket that is arranged around the rotary plate, rotates as one with the rotary plate, and expands in the shape of a flap toward the pressure cylinder side. In the apparatus, the dehydration basket is a basket having a solid-liquid separation ability, which is composed of a basket frame fixed to the rotary plate and a plurality of plate upper members divided in the radial direction and detachably held on the inner surface of the basket frame. A dewatering basket comprising a main body and a reinforcing plate made up of a plurality of divided pieces that cover the basket frame and the inner bottom periphery of the basket main body.