JP3657759B2 - Sand dewatering equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a dewatering device for forcibly dewatering sand discharged from a settling tank or the like.
[0002]
[Prior art]
Conventionally, a method has been developed for further dehydration by vacuum suction and secondary dehydration immediately after scooping up from the sedimentation tank with a bucket conveyor and draining water, but the equipment is attached to the bucket conveyor device. As a result, there is a problem that it becomes complicated and difficult to maintain. In addition, since the time for scooping up and draining is short, it may be desirable to perform forced dehydration even after secondary dehydration.
[0003]
[Problems to be solved by the invention]
Therefore, the present invention can forcibly dehydrate the sand once discharged from the settling tank or the like with a separate installation device, simplify the equipment equipment, operate smoothly, and eliminate clogging of the drainage body. A dehydrator is provided.
[0004]
[Means for Solving the Problems]
Therefore, the present invention further dewaters the sand discharged from the settling tank or the like, and includes a dewatering tank in which the upper end opening is covered with a drainage body, a sand supply device that supplies sand onto the drainage body, A sand transfer device for transferring sand supplied on the body to the discharge side, and a vacuum suction device for sucking residual moisture between the sand into the dehydration tank under negative pressure in the dewatering tank Is a sand dehydrator.
Then, the sand transfer plate arranged at intervals is used as a sand transfer device for endless running, and a cleaning body for removing clogging of the draining body is provided on the one transfer plate . Moreover, you may provide the waste_water | drain control apparatus which detects the amount of water storage in a dehydration tank and controls the pump waste_water | drain.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, details of the present invention will be described with reference to illustrated embodiments. In the embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes an elongated dewatering tank. The partition plate 10 is suspended from the upper end toward the upper end to close the upper end of the one side and closes the upper end of the other side. The drainage body 2 is attached to the opening and closed.
[0006]
A suction pipe 31 connected to a blower 3 serving as a vacuum device is connected to the upper side shell of the dewatering tank 1 near the partition plate 10. A drain pipe 41 connected to the pump 4 is connected to the lower end of the dehydrating tank 1 through an opening. Furthermore, liquid level detectors 12 and 13 for detecting the full water level of the dehydrating tank 1 and controlling the operation of the pump 4 are arranged above and below.
[0007]
As shown in FIG. 4, the draining body 2 is formed by arranging a large number of elongated stainless steel rods 20 having a narrow bottom end with a slight gap therebetween, and the placed sand does not fall. It is a gap that allows draining.
[0008]
5 is a transfer device for sand, sticking fixing a mounting rod 52 at regular intervals between a pair of chain 51 which inverts endlessly running the motor 50, the open end is serrated transfer plate 53 to the mounting rod 52 doing. Further, as shown in FIG. 3, a claw 54 that can be inserted between the draining rod bodies 20 protrudes from the tip of one transfer plate to form a clogged cleaning body 55. Reference numeral 6 denotes a sand input hopper, and 7 denotes a discharged dewatered sand discharge conveyor.
[0009]
Next, the operation of this example will be described. Since sand 9 is supplied from the charging hopper 6 onto one side end of the draining body 2, and the transfer plate 53 and the cleaning body 55 travel as the motor 50 rotates, as shown in FIG. In addition, the sand 9 moves on the drainage body 2 and is sent to the other end, and is dropped onto the discharge conveyor 7 and discharged.
[0010]
At this time, since the inside of the dewatering tank 1 communicated by suction by the blower 3 is in a negative pressure state, moisture between the sands placed on the draining body 2 is sucked into the dewatering tank 1. That is, external air is sucked into the dehydrating tank 1 from between the sand on the drainage body 2 by vacuum suction, and water between the sand is separated and sucked by being exhausted from the suction pipe 31. Thereby, the sand 9 is dehydrated and sand with a low water content is obtained.
[0011]
The sucked water is stored in the dehydration tank 1, and when the water level rises to the liquid level detector 12 at the upper position, the pump 4 operates to drain from the drain pipe 41, and the water level drops to the liquid level detector 12 at the lower position. And the pump 4 stops and stops drainage.
[0012]
Further, as shown in FIGS. 5 and 6, the claw 54 is inserted between the rod bodies 20 by running of the cleaning body 55 to clean the clogging of the draining body 2, so that the vacuum suction can be well maintained.
[0013]
Although the present embodiment is configured as described above, the present invention is not limited to this. For example, the shape and size of the dehydration tank are not limited. Further, the structure of the draining body is not limited, and may be a net-like body, or may be configured by arranging bars that are bent in the vertical direction in parallel so that there is no gap. Furthermore, a sand transfer device that transfers the sand supplied onto the drainage body to the discharge side is also appropriate. Also, a vacuum suction device that sucks the residual moisture between the sands into the dehydration tank by setting a negative pressure under the drainage body in the dehydration tank is also optional.
[0014]
In addition, when providing the cleaning body which removes the clogging of a draining body in one transfer board of a transfer apparatus, the structure of the cleaning body is not limited, It is good also as a brush shape like FIG.7 and FIG.8. In addition, as shown in FIG. 9, it is possible to use a structure in which every other rod body having a different height is disposed as shown in FIG. 9, and a high rod body is lifted by a cylinder or the like. As a result, the gap between the drained bodies is opened, and the clogged sand falls.
[0015]
【The invention's effect】
According to claim 1 of the present invention, the sand discharged from the settling tank or the like is further forcedly dehydrated by vacuum suction to obtain sand with a low water content, and is easy to maintain with a simple configuration for a single device , Moreover , the clogging of the drainage body is eliminated, and good suction dehydration can be secured. In claim 2 , the water in the dehydration tank can be smoothly drained.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of an embodiment of the present invention.
FIG. 2 is an enlarged plan view thereof.
FIG. 3 is an enlarged side view thereof.
FIG. 4 is an enlarged side view of a main part of the drained body.
FIG. 5 is an enlarged side view of a main part showing the operation of the cleaning body.
FIG. 6 is a further enlarged longitudinal front view of the main part showing the operation of the cleaning body.
FIG. 7 is an enlarged side view of the main part showing the operation of another example of the cleaning element.
FIG. 8 is a further enlarged vertical front view of the main part showing the operation of the cleaning body.
FIG. 9 is an enlarged side view of a main part showing another example of the clogging removing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dehydration tank 10 Partition plate 12, 13 Liquid level detector 2 Drainage body 20 Rod body 3 Blower 4 Pump 5 Transfer device 50 Motor 53 Transfer plate 54 Claw 55 Clean body 6 Input hopper 7 Discharge conveyor

Claims (2)

The sand discharged from the settling tank or the like is further dehydrated, the dewatering tank 1 with the upper end opening covered with the drainage body 2, the sand supply device for supplying the sand 9 onto the drainage body 2, and the drainage body 2 Sand consisting of a sand transfer device for transferring the sand supplied above to the discharge side, and a vacuum suction device for sucking residual moisture between the sand into the dehydration tank under a drainage body 2 in the dehydration tank under a negative pressure In this dewatering apparatus , the sand transfer plate 53 arranged at intervals is used as a sand transfer device 5 for endless travel, and the cleaning plate 55 for removing clogging of the draining body 2 is provided on one transfer plate 53. Characteristic sand dehydrator. The sand dewatering device according to claim 1, further comprising a drainage control device for detecting the amount of water stored in the dewatering tank and controlling the pump drainage.

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