JPS63218265A - Device for washing ballast with water - Google Patents

Abstract

PURPOSE:To surely remove the foreign matter in ballast and to efficiently wash the ballast with water, by passing raw ballast charged into a water vessel from a hopper through the almost horizontal water current formed at the upper part in the water vessel by a water-jet means. CONSTITUTION:A raw ballast charging water passage 2 extending horizontally from the front upper end of the water vessel 1 is provided, and the water-jet means 16 for jetting water from the starting end of the water passage 2 and forming an almost horizontal water current at the upper part in the water vessel 1 is also furnished. The hopper 24 for charging the ballast is further provided close to the starting end of the water passage 2. Accordingly, the ballast circulates in the water passage 2, settles at the lower part in the water vessel 1, and is conveyed to the outside by conveying means 13 and 14. Furthermore, a water discharging part 3 and a foreign matter recovering part 4 are provided at the terminal end of the water vessel 1. As a result, the foreign matter such as dirt and wooden chips is surely removed from the raw ballast, and the ballast can be efficiently washed with water.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a gravel washing device for washing crushed and excavated gravel raw stone with water.

(Prior art and its problems) Conventionally, water washing equipment has been known for washing gravel raw stone with water to remove dirt, wood chips, lignite, clay, and other foreign substances. Because the gravel was placed in a tank that discharged water diagonally upward from the bottom, the water in the tank was in a turbulent state, and foreign matter separated from the gravel quickly flowed into the tank. Many of the particles moved around the tank without being removed from the upper drainage section, and were carried out together with the settling gravel on the gravel conveyor. In other words, the effect of separating and removing foreign substances by washing with water is low;
It had the disadvantage of being inefficient.

(Means for Solving the Problems) The present invention proposes a water washing device capable of solving the conventional problems as described above, and its feature is that the water washing device extends approximately horizontally from the upper front end of the water tank. A gravel input channel is provided, and a water discharge means is provided for discharging water from the starting end of the channel to form a substantially horizontal water flow in the upper layer of the water tank. A hopper for introducing gravel and a transport means for transporting the gravel that flows in the waterway and falls and settles at the lower part of the water tank are provided, and a drainage part and a foreign matter collection part are provided at the rear end of the water tank. .

(Operation of the Invention) According to the above-mentioned sorting device, the gravel input from the hopper into the gravel input channel flows together with the horizontal water flow flowing in the channel by the water discharge means. After that, it is sent to the upper part of the aquarium. Therefore, all of the raw gravel is sent out approximately horizontally to the upper part of the water tank while being reliably given kinetic energy in the direction of the water flow within the water channel. In the tank, only a water flow is formed in the upper part of the tank, flowing from the front end to the drainage part at the rear end, and there is no significant turbulence below the water flow. Floatable foreign matter such as garbage and wood chips, fine soil, etc. are separated and removed from the main gravel, etc., flow together with the water flow, and are promptly collected in the foreign material collection section, and the remaining main gravel, etc. is received by the water flow. It descends to the bottom of the tank in a washed state.

The gravel thus settled at the bottom of the tank can be carried out of the tank by the carrying means.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In Figures 1 and 2, 1 is a water tank, and at the upper part of the front end, a raw stone input channel 2 extending horizontally throughout the tank 1 is connected, and at the upper part of the rear end, there is a drainage section. An overflow portion 3 is formed. Reference numeral 4 denotes a floating foreign matter recovery tank connected to the outside of the overflow part 3, and is equipped with a water source application net 5, a drain port 6, and a recovered matter removal lower that can be opened and closed. In the lower part of the water tank 1, two compartments 9 and 10, front and rear, partitioned by a partition wall 8 are arranged side by side. Each compartment 9.10 has a separate discharge passage 11 connected diagonally upward from the bottom thereof, and the gravel etc. settled in each compartment 9.10 is passed through the discharge passage 11 to a discharge port 11 located at a higher place than the water surface. Bucket conveyors (or chain conveyors with scraping plates, etc.) 13 and 14 are respectively provided as means for conveying the materials. 15 is an auxiliary sedimentation tank formed between the latter section 10 and the overflow part 3.

16 is a water discharge means for forming a water flow in the upper part of the water tank 1 from the starting end of the raw stone input channel 2 to the overflow part 3; A plurality of water discharge nozzles 1 are arranged in parallel at appropriate intervals.
It has 7. These multiple water discharge nozzles 1 arranged in parallel
7 is connected to a hollow pipe 19 that distributes water supplied from the pump 18 to each nozzle 17 at approximately equal pressure. Reference numeral 20 denotes an air intake pipe that is fitted around each nozzle 17 concentrically. 21 is a water tank that receives waste water flowing out from the drain port 6 of the floating foreign matter collection tank 4, and the pump 18 pumps the water in this water tank 21 to each nozzle 17.
to be pumped to. The water tank 21 has an automatic water level control valve 22.
The water level is always maintained at a constant level by water supplied from the water supply pipe 23 via the water supply pipe 23.

Reference numeral 24 denotes a hopper for charging gravel for use in the vicinity of the starting end of the raw stone input channel 2, and its opening 24a allows the raw stone to flow out evenly over substantially the entire width of the raw stone input channel 2.

The partition wall 8 between the front and rear sections 9 and 10 is composed of a main gate 25 that can be raised and lowered and fixed, and a sub-gate 26 that is pivotally connected to the upper end of the main gate 25 so that it can swing back and forth and be fixed.

To explain how to use the gravel sorting device configured as above, as shown in the figure, the pump 18 is operated with the water tank 1 filled with water, and the water in the water tank 21 is pumped to the Hesogoo vibrator 19. Water is discharged from each nozzle 17 of the water discharge means 16 into the raw stone input channel 2. As a result, a water flow is formed in the upper part of the water tank 1 from the starting end of the rough stone input channel 2 to the overflow part 3. In this state, if a fixed amount of gravel is supplied from the opening 24a of the homper 24 to a position near the starting end of the rough stone input channel 2, the rough stone will flow into the upper part of the water tank 1 from the rough stone input channel 2 along with the water flow. do. In this process, the gravel that makes up the rough stone receives kinetic energy in the direction of the water flow, so instead of falling vertically from the end of the rough stone input channel 2, the downward gravity and the horizontal kinetic energy are balanced. Draws a parabola and descends through the water.

Therefore, if the specific gravity is the same, the smaller the particle size, the farther it will fall from the end of the raw stone input channel 2, and the floating foreign objects such as garbage and wood chips, and fine soil will be separated from the gravel. and flows together with the water stream. As a result, gravel with a large particle size is precipitated in the section 9 on the side closer to the raw stone input channel 2, and gravel with a smaller particle size is precipitated in the section 10 on the far side. The gravel settled in each of these compartments 9.10 is transported to a conveyor path 13.14 by a bucket conveyor (or a chain conveyor with a scraping plate, etc.).
1 and can be continuously carried out from an outlet 12 located higher than the water surface. Floatable foreign matter such as garbage and wood chips flow out together with the water flowing out from the overflow part 3 and are collected in a floating foreign matter collection tank 4, and are taken out from a collected matter removal lower that can be opened and closed at an appropriate time. I can do it.

Water filtered by the water source application net 5 is collected into a water tank 21 through a drain port 6. Also, for fine soil, etc., use the auxiliary settling tank 15.
Therefore, the auxiliary sedimentation tank 15 can be cleaned and taken out at an appropriate time.

In addition, the main gate 125 that constitutes the partition wall 8 between the two compartments 9 and 10
By adjusting the height of the auxiliary gate 26, adjusting the angle in the front and back direction of the sub-gate 26, adjusting the amount of water discharged from the water discharge means 16 and the discharge pressure, and adjusting the amount of raw ore input from the hopper 24 per unit time, it is possible to ! 9.10 The particle size range of the gravel to be precipitated can be adjusted as desired.

Furthermore, when an air intake pipe 20 is attached to each nozzle 17 of the water discharge means 16 as shown in the figure, air is sucked from the air intake pipe 20 by the injection action of water discharged from each nozzle 17, An air layer is formed around the water stream discharged from 17. As a result, the straightness of the water flow discharged from each nozzle 17 is improved.

As shown in the embodiment of FIG. 3, all or part of the auxiliary settling tank 15, air intake pipe 20, etc. can be omitted. Moreover, although the water discharge means 16 is constructed by arranging a plurality of nozzles 17 in parallel, it is also possible to construct it by a slit-shaped nozzle having a width approximately the same as the width of the raw stone input channel 2.

Further, in the present invention, although it is not an essential condition to sort the washed gravel by particle size, as in the embodiment, sections 9 and 10 for sorting are provided so that the gravel can be sorted by particle size at the same time as washing. When doing so, as shown in FIG. 3, a front and rear small auxiliary section 27 is constructed between the two sections 9 and 10 by a pair of front and rear partition walls 8a, Bb, and this auxiliary section i! 1i
A packet conveyor (or a chain conveyor with a scraping plate, etc.) 28 can be installed to carry out the gravel settled in the container 27. In this case, use medium-grained gravel in the auxiliary section 2.
The minimum particle size of the gravel that settles in the main compartment 9 and the maximum particle size of the gravel that settles in the main compartment 10 can be clearly separated. Of course, intermediate-grained gravel that settles in the auxiliary compartment 27 can also be used as a product, but in some cases, the circulation conveyance path 29 shown by the imaginary line
It can also be returned to the hopper 24 by In addition, as shown in the illustrated partition walls 8a and 8b, a main gate 2 that can be raised and lowered is fixed.
The partition wall between the compartments can be formed only from 5, or the partition wall can be formed only from the auxiliary gate 26 shown in FIG.

In addition, the water #
It is desirable to configure the water metal body in the water tank 2 to flow to the upper part of the water tank 1 in a laminar flow state.For this purpose, for example, as shown in FIG. This water inlet 30 and the starting end of the surface rough stone input water &82 are communicated through a pipe 31, and the water is discharged from the water inlet 30 to the pipe 31 by the injection action of water discharged from the water discharge means 16.
, the raw stone input waterway 2 , and the upper part of the water tank 1 to generate a circulating water flow that reaches the water inlet 30 .

(Effects of the Invention) As described above, according to the gravel washing device of the present invention, it is possible to reliably remove foreign substances such as dust and wood chips from the gravel raw stone and efficiently wash the gravel. Moreover, as shown in the embodiment, it is possible to wash the gravel with water and simultaneously sort it according to particle size, if necessary.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing the first embodiment, FIG. 2 is a longitudinal sectional front view thereof, and FIG. 3 is a longitudinal sectional side view showing the second embodiment. 1...Water tank, 2...Rough stone input channel, 3...Part of overflow, 4...Floating foreign matter collection tank, 8.5a, 5
b... Bulkhead, 9, 10.27... Compartment, 11...
Carrying out passage, 12... Carrying out exit, 13.14.28...
Bucket conveyor (or chain conveyor with scraping plate, etc.), 15... auxiliary sedimentation tank, 16... water discharge means,
17... Nozzle, 18... Pump, 19... Header pipe, 21... Water tank, 24... Gravel input hopper, 25... Main gate that can be raised and lowered,
26...Sub-gate that can be fixed by swinging back and forth.

Claims (1)

[Claims] A gravel input waterway extending approximately horizontally from the upper front end of the water tank is provided, and a water discharge means is provided for discharging water from the starting end of this waterway to form a substantially horizontal water flow in the upper layer of the water tank. , a hopper for introducing gravel for use in the vicinity of the starting end of the waterway, and a carrying-out means for transporting the gravel that flows through the waterway and falls and settles in the lower part of the water tank, and a drainage part and a drainage part are provided at the rear end of the water tank. A gravel washing device comprising a foreign matter collection section.