JPS5836655A - Method for feeding granular material such as sand to classifier - Google Patents

Abstract

PURPOSE:To feed sand or the like to a classifier with consumption of small energy without using any conveyor or the like, by forming a sand pump movably up and down and turnably, drawing granular materials, such as sand, together with water, and removing foreign matters in a hopper immediately before the classifier. CONSTITUTION:A hopper 1 is instaled immediately before the feed water inlet M1 of a classifier M. A sand pump 4 connected with the hopper 1 is moved up and down and turned using a winch 7 or the like to move sand or the like granular materials piled up on the ground. Water is fed to granular materials S, powder material S are drawn together with water through a flexible pipe 32, and delivered to the inlet 11 of the hopper 1 from a lifting vertical pipe 3. The fluid mixed with the granular material S is passed through a removing device 2, such as filter or brush, installed in the hopper 1 to remove roots, broken branches, bulky refuse, stones, and the like foreign matters, and the fluid is fed into the classifier M to classify the powder materials S into desired grain sizes. The exhausted muddy water is returned to near the pump 4 through a recirculartion pipe M6 to use it as part of replenishing water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for recovering solid particles that have been sorted and washed to a desired particle size using a classifier from granular materials such as natural sand that exist in the natural world such as beaches, mountains, and rivers. This invention relates to a new method for feeding granular materials such as sand to a classifier.

In recent years, it has become extremely difficult to secure high-quality sand for use as building materials and other uses. Therefore, efforts are being made to obtain high-quality sand by various means from granular materials such as sand produced from all parts of the natural world such as beaches, mountains, and rivers.

One way to obtain this high quality sand is to use a classifier. This was developed by taking advantage of the fact that the settling speed of solid particles in a fluid differs depending on the size of the particles.This method involves putting particulate matter such as sand into a rotating drum along with water, and creating a device inside the drum. Water is filtered through rotating chutes, baffles, spiral blades, 9-class plates, etc.
It is designed to appropriately separate mud, fine particles, and coarse particles to select and collect granules of a desired particle size.

Various types of classifiers have already been developed and put into practical use, and are used in plants such as stone crushing sites to perform the function of sorting and collecting granular materials. The means for supplying (mixture with water) to the classifier were all combined with a belt conveyor, which resulted in a large-scale facility, which was disadvantageous in terms of installation space and capital investment. In addition, it is necessary to supply sand and other granular materials to the hopper on the belt conveyor using another mechanism, such as a tractor shovel, and the cost and complexity of this process can be ignored. It was impossible.

The present invention has been able to cope with these conventional situations and has the configuration as detailed below.

As shown in the drawing, a removal device such as a filter or a brush is installed immediately before the raw water inlet Ml of the classifier M to remove foreign substances such as tree roots, branches, large clumps, and stone blocks from granular substances such as sand. 2 hoppers 1 are provided. On the other hand, a lifting vertical pipe 3 is installed adjacent to this hopper 1, and the L end is formed into a curved part 31 facing the upper input port 11 of the hopper 1, and the lower end is made into a flexible pipe from a suitable place. The tip of the vibrator is connected to a sand pump 4, so that the sand pump 4 is connected to the lifting vertical pipe 3 via a flexible pipe blade.

The sand pump 4 connected in this way is suspended via a winch 7 from a horizontal arm member 6 extending from a support post 5 which also serves as a support post for the hopper 1, and when the winch 7 is operated, the sand pump The sand pump 4 itself can be moved up and down, and the horizontal arm member 6 is pivotally attached 51 around the axis of the support 5, thereby making it possible to move the sand pump 4 in a horizontal plane.

In addition, in the figure, M2 is the particulate matter sorting and collection port of classifier M, and M3 is
is the motor for rotating the drum of classifier M, M4 is the same chain, M5 is the spring water receiver, M6 is the circulation vibe 12 is the hopper 1
Garbage discharge port attached to , 52 is a branch line, and winch 7 is attached.
and 8 indicate the horizontal movement operation portion of the horizontal arm member 6, respectively.

In the device for supplying granular materials such as sand to the classifier M formed as described above, sand, etc. carried from the beach, mountains, rivers, etc. by a dump truck or other transport vehicle is placed within the repositionable range of the sand pump 4. The granules S are simply piled up in an open pile. This stacking operation is only limited by the stacking range and there is no need to pay any attention to the stacking condition, so unloading from dump trucks and other transport vehicles becomes extremely simple.

A sufficient amount of water is supplied to the appropriate place of the sand and other granular materials S that have been unloaded in the form of open piles, for example, in a place that is somewhat hollow, to the extent that it becomes ice-like, and the sand pump 4 is installed at the same place. After charging by remote control, the sand pump 4 is activated. Then, the particulate matter S such as sand in the area where the ice has accumulated and the surrounding area is sucked into the sand pump 4 together with water, passes through the flexible pipe support, is pushed up inside the lifting vertical pipe 3, and is pushed up at the upper end of the intermediate pipe 3. From the upper input port 11 of hopper 1
reach. The fluid mixed with particulate matter S such as sand that has reached the upper input port 11 passes through a removal device 2 attached to the hopper 1 and removes foreign matter such as tree roots, broken branches, large debris, and stone blocks. The removed fluid flows out from the lower end of the hopper 1, enters the drum from the raw water inlet M1 of the classifier M, and is filled with high-quality sand of the desired particle size that has been sorted according to the performance of the classifier M. can get.

Particulate matter that was not subject to sorting in this process was
A portion of the make-up water is returned to the spring water receiver M5 together with the discharged muddy water, is returned to the area around the sand pump 4 through the circulation pipe M6, and is used to suck up other particulate matter S such as sand around the sand pump 4. be reused.

Good quality sand that has been sorted and washed from the sand and other granular materials S is obtained through the above-mentioned route, but at that time, the sand pump 4
While checking the accumulation status of sand and other granular materials S accumulated in an open pile, the sand and other granular materials S in that area are moved together with water by the sand pump 4 by sequentially moving toward the direction where the accumulated amount is larger. Therefore, the particulate matter S such as sand located around it, that is, located above the ice-like part collapses and becomes submerged in water, and enters the suction range of the sand pump 4. As long as such operations are repeated, the sand and other granular materials S can be removed without any modification to the sand and other granular materials S that are piled up in the open.
All of these can be smoothly transferred and supplied to the classifier M.

According to the feeding method of this invention as described above, there is no need for a long and expensive belt conveyor facility for feeding granular materials S such as sand to the classifier. A hopper or other attached facility (for example,
This also eliminates the need for a vibrator (such as a vibrating device to smoothly lower the moist sand and other granular materials S in the hopper), so a large area is not required to set up a plant for manually handling high-quality sand. In addition to this, the cost required for equipment investment will also be reduced accordingly.

Also, what is particularly important is that the supply of sand and other granular materials S can be carried out in a location close to the classifier, which makes it possible to carry out the work while also managing the classifier, thereby reducing maintenance of the entire device. Not only is it easy to use, but it is also advantageous in terms of labor costs.

Furthermore, with the conventional feeding method that used a belt conveyor, the water required inside the classifier had to be replenished separately during the feeding process of sand and other granular materials, and furthermore, it was almost impossible to reuse it. However, in the supply method of this invention,
Water is used as the method for supplying sand and other granular materials, and the water gushing from the classifier is returned to the area where sand and other granular materials accumulate and is reused as suction water for the sand pump. Therefore, the operation and effect of the method for supplying granular materials such as sand of the present invention are outstanding, such as not only being an energy-saving and extremely economical supply method, but also being extremely advantageous in terms of supply speed. As a result,
This makes it possible to stably provide high-quality sand at low cost.

[Brief explanation of the drawing]

The drawings illustrate an apparatus necessary for explaining the invention in detail, and FIG. 1 is a side view thereof, and FIG. 2 is a plan view thereof. L: Hopper, 2: Removal device, 3: Lifting vertical pipe, 4: Sand pump, 5: Strut, 6: Horizontal arm material, 7: Winch, 8: Horizontal operation unit, M: Classifier, S: Sand Equal granules. Procedural amendment (method) February 3, 1980 Commissioner of the Japan Patent Office Shima 1) Haru Juden Jyoron. 1. Indication of the case 2. Name of the invention Method of supplying sand and other granular materials to a classifier 3. Person making the amendment Relationship to the case Patent applicant 4. Agent January 5, 1980 6. Subject of the amendment

Claims (1)

[Claims] Immediately before the raw water is input into the classifier, which uses differences in the settling speed of solid particles in the fluid to select and collect solid particles of the desired particle size, tree roots, branches, oversized debris, and stone blocks in granular materials such as sand are removed. A hopper equipped with a removing device such as a filter or a brush is installed to remove foreign substances, and a sand pump is connected via a flexible pipe to the lower end of the lifting vertical pipe that reaches the upper input port of the hopper. The sand pump forms a device for supplying granular materials such as sand to the classifier, whose height and horizontal position can be changed freely by remote control, and the range in which the position of the sand pump in the feeding device can be changed is Sand and other granular materials are piled up in the open, and water is replenished to the appropriate place to form a puddle-like part, and after the sand pump is put in the same place, the position is sequentially changed. A method for supplying sand and other granular materials to a classifier, in which the sand and other granular materials are transported from a piled-up point where sand and other granular materials are accumulated to a classifier by operating the sand pump while changing the sand pump. .