KR100601058B1 - Sand Washing Machine - Google Patents

Abstract

The present invention relates to a sand washing apparatus, and the object of the present invention is to provide a sand washing apparatus that is not in severe contact with sand, and thus has excellent durability, low washing water and power, and above all, a small size of the apparatus.

The sand washing apparatus of the present invention includes: a supply chute 20 having a baffle 20a installed to transfer sand to be washed together with water to an input hopper 21; Located at the top of the sorting hopper 30, the feed hopper having a spiral baffle (21a) is installed on the inner surface to separate the sand and impurities while transferring the sand and water supplied through the supply chute 20 to the sorting hopper 31 ( 21); At the top, a weir 30a is installed, and at the bottom, a circular baffle 30b and a donut-shaped baffle 30c are alternately installed at the inner wall and the center, and sand and water are delivered from the supply hopper 21. A sorting hopper 30 to be washed while descending, and the impurities separated from the sand are overflowed to the weir 30a by rising water; Conveyor belt 40 for dehydrating while carrying the sand descending from the sorting hopper out of the tank; The upper portion of the sorting hopper 30 is provided with a drain groove 31 for receiving impurities and water flowing out of the weir 30a of the sorting hopper 30, the water supply nozzle 11 for preventing impurities from being deposited in the lower portion It includes a water tank (10) installed.

Sand washing equipment, salt, fine powder, stone powder, dehydration

Description

Sand Washing Machine {Sand Washing Machine}

1 is a perspective view showing the structure of the sand washing apparatus of the present invention,

2 is a perspective view showing a portion of the supply chute and the supply hopper cut off,

3 is a cross-sectional view of a feed chute, a feed hopper, a sorting hopper and a belt conveyor for explaining the mechanism of washing sand,

4 is a cross-sectional view of the belt conveyor of the dewatering portion.

FIG. 5 is a perspective view of an impurity separation device in which two first and second sedimentation tanks are provided, and the first and second sump tanks share one barrel. FIG.

6 is a cross-sectional view of the impurity separator showing the flow of water,

7 is a cross-sectional view of the settling tank showing the flow of water and impurities,

8 is a cross-sectional view of an impurity reservoir showing a flow of impurities.

* Explanation of symbols for the main parts of the drawings

10: water tank 11: water supply nozzle

20: supply chute 20a: baffle

21: feed hopper 21a: spiral baffle

30: sorting hopper 31a: weir

30b: round baffle 30c: donut type baffle

31: drainage groove 40: belt conveyor

41: water recovery plate 50: water intake tank

61, 62: primary sedimentation tank 63, 64: secondary sedimentation tank

65a: primary sump 65b: secondary sump

66: impurity reservoir 71: supply pipe

72: cleaning pipe 72a: impurity transfer pipe

72b: impurity input pipe 72c: impurity discharge pipe

72d: impurity return pipe 73: rectifying plate

81: settler weir 81a: opening

The present invention relates to a sand washing apparatus, and in particular, a sand washing apparatus for removing salts, soil, fines, etc. from sand produced by crushing sand or aggregate debris collected from the sea or river, and impurities provided therein ( The present invention relates to a separation device such as soil or contaminants other than sand.

The most widely adopted sand cleaning device is a trommel that rotates the inclined drum-type wire mesh and injects the sand to be washed from the top with water so that the sand and the water fall and tromels escape through the wire mesh. A trommel type sand washing device may have a disadvantage in that it takes a lot of water and is difficult to carry out in a place other than a river, and a lot of usable sand is lost and impurities are incompletely removed.

There is a sand washing device in which sand and water are put together in the water tank and the horizontal spiral blades are rotated to separate impurities from sand and to remove bare sand from the bottom. The disadvantage is that it is severe and expensive.

In another way, a fixed cone-shaped drum is installed at an angle and the sand and water to be cleaned at the drum edge are fed at a high speed to generate centrifugal force inside the drum, whereby large particles move toward the drum edge and small particles move toward the center of the drum. There is a method of separating by a cyclone (cyclone method), which can be called a relatively new method, but the water consumption, the drum internal wear is severe, and a special pump must be used, which requires a lot of power.

In addition, the inventors of the invention of the present invention 2002-14363, while rotating the large drum installed with the inner flapping wings to send water to the inside to repeat the action of the sand is raised and falling while washing in contact with water and counterflow. This discloses a disadvantage in that a small amount of sand is formed and vortex is scattered.

The washing water is treated and reused by filtration and precipitation method which rapidly precipitates impurities using a flocculant. The filtration method can be used only when the throughput is very small, and the precipitation method has a large amount of impurities containing a flocculant. There is a problem that occurs. Sedimentation methods also have the disadvantages of high site and installation costs and the inability to move the equipment to the sand collection site due to its large size.

It is an object of the present invention to provide a sand washing apparatus which is not in contact with sand and thus has good durability of the apparatus, requires less washing water and power, and has a smaller size.

Another object of the present invention is to provide an impurity precipitation apparatus for recycling the washing water provided in the sand washing apparatus.

Sand washing apparatus of the present invention for achieving the above object,

A supply chute (20) having a baffle (20a) for transferring sand to be washed to the input hopper (21) together with water;

Located at the top of the sorting hopper 30, the feed hopper having a spiral baffle (21a) is installed on the inner surface to separate the sand and impurities while transferring the sand and water supplied through the supply chute 20 to the sorting hopper 31 ( 21);

Weir 30a is installed at the upper end, and a donut-type baffle attached to the inner wall and a circular baffle 30b at a distance from the inner wall are alternately installed at the lower end, and the donut-type sand received from the supply hopper 21 is alternately installed. A sorting hopper 30 which alternately hits the baffle and the round baffle and is washed to fall, and at the same time, the impurities separated from the sand overflow into the weir 30a with the rising water;

Conveyor belt 40 for dehydrating while carrying the sand descending from the sorting hopper out of the tank;

The upper portion of the sorting hopper 30 is provided with a drainage groove 31 for receiving impurities and water flowing out of the weir 30a of the sorting hopper 30, the water supply nozzle 11 for preventing impurities from being deposited It includes a water tank (10) installed.

In FIG. 1, reference numeral 41 denotes a water recovery plate for guiding water flowing down from a conveyor belt to a water tank.

Hereinafter, the process of washing the sand by the sand washing apparatus of the present invention will be described in more detail by following the flow of sand using FIGS. 1 is a cutaway perspective view showing the structure of the sand washing apparatus of the present invention, Figure 2 is a perspective view showing a portion of the feed chute and the supply hopper, Figure 3 is a feed chute for explaining the mechanism of washing sand; It is sectional drawing of a feed hopper, a sorting hopper, and a belt conveyor, and FIG. 4 is sectional drawing of the belt conveyor of a dehydration part.

When the sand and water to be washed from the outside is supplied through the supply chute 20, the water and the sand hit the baffle 20a and flow down the supply chute and are first supplied to the supply hopper 21 while being washed. As shown in Fig. 3, the feed hopper 21 is a cylindrical funnel, which is half-immersed in water and functions to transfer the raw materials to the sorting chute 30. As shown in Fig. 2, the feed hopper is provided. There is a spiral baffle (21a), the sand is rotated to descend and separate from the impurities in the water while washing.

The sand passing through the feed hopper 21 is introduced into the sorting hopper 30. The sorting hopper has a flow of water flowing upwards, so the sand is a circular baffle 30b and a donut-shaped baffle 30c alternately installed at the center and the inner wall. ) Alternately through water and counter flow. Thus, the sand falls out onto the belt conveyor and is taken out, and impurities such as soil are loaded into the rising water and flow over the weir 30a at the top of the sorting hopper, and then discharged out through the drainage trench 31. The upward flow of water formed inside the sorting hopper is water supplied through the water supply nozzle 11 to prevent impurities from being deposited. The water is provided at both the chute 20 and the water supply nozzle 11. It is fed to the sand washing apparatus through.

In the sorting hopper 30, sand and impurities separated from the impurity meet with the moving belt conveyor 40 and are transported out of the water. The washing process is completed, and the cross section of the belt conveyor is made higher in the water. It is preferable that the sand does not flow out, and outside the water, as shown in FIG. 4, the outer side is lowered to allow dehydration.

On the other hand, impurities not discharged out through the weir 30a of the sorting hopper 30 in the washing process sinks to the bottom of the water tank 10. If this is not removed, the washing function gradually decreases, so that water is supplied to the water supply nozzle. Spray at high speed through (11) to prevent impurities from accumulating on the tank bottom.

The discharge water of the sand washing apparatus can be reused by simply depositing and removing impurities such as soil and sand, and the first and second sedimentation tanks each have two circular tanks. 5, which illustrates an impurity separation device in which a first water tank and a second water tank are installed by dividing one cylinder.

The impurity separator includes: a water intake tank 50 alternately supplied to two primary sedimentation tanks by receiving the outflow water of the sand washing device flowing over the weir 31a of the sorting hopper 30;

Secondary sedimentation tank (61), which supplies the supernatant of the upper part which is cleared by first precipitation of the water supplied from the intake tank (50) to the primary water collection tank (65a), and the precipitated impurities are sent to the impurity storage tank (61). 62);

A primary sump tank 65a which collects the supernatant water supplied from the primary settling tank and supplies it to the secondary settling tanks 63 and 64 and the supply chute 20 and the water supply nozzle 11;

Two secondary sedimentation tanks 63 and 64 for secondary precipitation of the water supplied from the primary water collection tank to supply the supernatant water to the secondary water collection tank 65b, and the precipitated impurities to the impurity storage tank;

A secondary sump tank 65b for supplying the supernatant water supplied from the secondary settling tank to the supply chute 20 and the water supply nozzle 11;

It includes an impurity storage tank (66) for collecting impurities supplied from the primary settling tank (61, 62) and the secondary settling tank (63, 64), the water through the primary settling tank, the primary collection tank and the supply chute (20) It is supplied to the water supply nozzle 11 or supplied to the supply chute 20 and the water supply nozzle 11 through the primary sedimentation tank, the primary collection tank, the secondary sedimentation tank, and the secondary collection tank, and the impurities are reused. Gathers from secondary sedimentation tank to impurity reservoir.
Here, the first settling tank and the second settling tank have at least two but more than that, that is, if three to five, the first or second settling tank while the water is supplied to one first settling tank or the second settling tank Precipitation takes place, so impurities can be precipitated more effectively.
In FIG. 5, reference numeral 71 is a pipe for supplying the wash water to be treated, 72 is a pipe for cleaning the deposited impurities, 72b is an impurity input pipe, 73 is a rectifying plate for increasing the settling speed, and 81 is a symbol. 81a is an opening for flowing water to a neighboring settling tank or a storage tank.

Hereinafter, the process of separating impurities in the impurity separation apparatus of the present invention will be described in more detail by following the flow of water using FIGS. 6 is a cross-sectional view of an impurity separator showing water flow, FIG. 7 is a cross-sectional view of a precipitation tank showing a flow of water and impurities, and FIG. 8 is a cross-sectional view of an impurity reservoir showing a flow of impurities.

The discharge water of the sand washing apparatus is collected in the intake tank 50 of FIG. 1 and supplied to the first precipitation tank, which is alternately supplied to the two first precipitation tanks 61 and 62 by a timer. The discharge water is preferable because the time taken for the precipitation to be supplied to the lower end of the first precipitation tank through the supply pipe 71 is shortened.

When precipitation occurs, the supernatant water is transferred to the first water collecting tank 65a, and the impurities are transferred to the impurity storage tank 66.

Part of the water collected in the first water collection tank is put into the chute 20 of the sand washing apparatus together with the sand to be washed and used for sand washing, and part of the water is introduced into the second settling tanks 63 and 64 for secondary precipitation. Makes this happen. When water is supplied from the first collection tank to the second precipitation tank, the water from the intake tank is alternately supplied and supplied to the lower portion as when the water is supplied to the first precipitation tank.

The settling tank has the same structure in both the first settling tank and the second settling tank, and preferably two to five rectifying plates 73 are provided therein, such as an inclined plate settler, so that impurities settle faster.

The symbol water of the second sedimentation tank is transferred to the second water tank 65b and sprayed into the water tank 10 through the water supply nozzle 11 of the sand washing apparatus to prevent the accumulation of sediment in the water tank. Transfer to impurity reservoir. In Fig. 7 and Fig. 8, reference numeral 72b is an impurity input pipe, 72c is an impurity discharge pipe, and 72d is an impurity return pipe.

Through the above process, the sand washing apparatus of the present invention reuses the washing water, and thus can be continuously operated by supplying make-up water as much as discharged with impurities.

The sand washing apparatus of the present invention uses power only for the process of inputting and discharging sand and water, so that the power cost is low, the wear of the apparatus is small, and the scale is small and simple, so that it can be easily moved and installed in a place to be used.

In addition, since the impurity precipitation apparatus provided in the sand washing apparatus of the present invention does not use a flocculant, it is easy to process or recycle impurities, and like the sand washing apparatus, it is small in size and separable, and therefore easy to move to a place to be used. .

Claims (3)

A supply chute having a baffle for transferring the sand to be washed together with the water to the input hopper; A feed hopper disposed above the sorting hopper and having a spiral baffle installed at an inner surface to separate sand and impurities while transferring sand and water supplied through the feed chute to the sorting hopper; At the top, weir is installed, and at the bottom, donut-type baffle attached to the inner wall and a circular baffle spaced from the inner wall are alternately installed, and the sand delivered from the supply hopper alternately hits the donut-type baffle and the circular baffle and descends. A sorting hopper to be washed so that the impurities separated from the sand overflow into the weir together with the rising water; Conveyor belt for dewatering while carrying the sand descending from the sorting hopper out of the tank; The upper part of the sand washing apparatus comprising a water tank is installed in the upper portion of the drain and drain to receive the impurities and water flowing out the weir of the sorting hopper, the lower portion is provided with a water supply nozzle for preventing impurities from being deposited. According to claim 1, Water intake tank for alternately feeding the 2-5 primary sedimentation tank receiving the effluent of the sand washing apparatus flowing over the weir of the sorting hopper; 2-5 primary sedimentation tanks which supply the symbolic water of the upper portion which is cleared by primary precipitation of the water intake tanks to the primary water collection tank, and the precipitated impurities are sent to the impurity storage tank; A primary sump collecting the symbol water supplied from the primary sedimentation tank and supplying it to the secondary sedimentation tank, the supply chute and the water supply nozzle; Two to five secondary sedimentation tanks for secondary precipitation of the water supplied from the primary water collection tank to supply the supernatant water to the secondary water collection tank and the precipitated impurities to the impurity storage tank; A secondary sump collecting the symbol water supplied from the secondary sedimentation tank and supplying it to the supply chute and the water supply nozzle; To include an impurity storage tank for storing impurities supplied from the primary settling tank and the secondary settling tank, The water is supplied to the supply chute and the water supply nozzle through the primary settling tank and the first collection tank, or supplied to the supply chute and the water supply nozzle through the primary settling tank, the primary collection tank, the secondary precipitation tank and the secondary collection tank for reuse. A sand washing apparatus with an impurity separator that is collected from the primary and secondary sedimentation tanks into an impurity storage tank. The sand washing apparatus according to claim 2, wherein 2-5 porous plates are installed in the settling tank.

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