JPH062722Y2 - Settling device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sand settling device for scooping up sedimentation substances such as sand settled in a pond tank.

[Conventional technology]

Generally, in sewage treatment equipment, industrial wastewater equipment, etc., a pond tank is provided to settle the sand in the inflow water, and in this pond tank, a sand settling device is arranged to scoop up the settled sand. Has been done.

An example of such a sand setting device is,
Those disclosed in Japanese Patent Publication No. 133205/1993, Japanese Utility Model Publication No. 56-14613 and the like are known.

FIG. 4 shows this kind of sand settling device, and in the figure, reference numeral 11 indicates a pond tank for sinking the sand in the inflow water flowing in from the arrow A direction.

In the pond tank 11, a front sprocket wheel 13 and a rear sprocket wheel 15 are horizontally arranged at intervals.

On the other hand, on the upper surface of the lid portion 17 of the pond tank 11, a sand settling machine 19 for discharging the settling sand is arranged, and above this, an upper sprocket wheel 21 which is a sprocket wheel for driving is arranged.

In the figure, reference numeral 23 indicates a sprocket wheel of the take-up device, and reference numeral 25 indicates an intermediate sprocket wheel.

An annular chain 27 is formed by connecting the front sprocket wheel 13, the upper sprocket wheel 21, the sprocket wheels 23 and 25, and the rear sprocket wheel 15.
The chain 27 is wrapped around the pond tank 1
A bucket 29 for scraping up the settled sand inside 1 is fixed.

In such a sand settling device, the chain 27 is driven by the upper sprocket wheel 21 in the direction of arrow B in the drawing, and the settling sand is scraped up by the bucket 29 fixed to the chain 27, and the bucket 29 is moved to the sand settling device 19. At the location located above, the sediment in the bucket 29 will be
The settled sand settled in the pond tank 11 is discharged from the settling carrier 19 to the outside.

[Problems to be solved by the device]

However, in such a conventional sand settling device, for example, when the amount of inflow water into the pond tank 11 increases due to heavy rain, or when the use of the sand settling device is stopped for a long time, There is a problem that a large amount of sludge or the like accumulates on the bottom of the pond tank 11, the bucket 29 of the sand settling device is buried in the sludge, becomes overloaded during operation, and it cannot perform its function and must be stopped. .

The present invention solves the above problems, and an object of the present invention is to provide a sand settling device that can reliably prevent a bucket from being buried in sludge with a simple configuration.

[Means for Solving the Problems]

The settling device according to the present invention comprises a front sprocket wheel and a rear sprocket wheel horizontally spaced in the pond tank, and an upper sprocket wheel above the pond tank. The wheel, the rear sprocket wheel, and the upper sprocket wheel are connected to each other, and the inside of the annular chain is wound, and the front sprocket wheel and the rear sprocket wheel are horizontally spaced from each other in the pond tank. An upper sprocket wheel is arranged above the pond tank, the front sprocket wheel, the rear sprocket wheel and the upper sprocket wheel are connected to wind the inside of an annular chain, and the annular chain is settled in the pond tank. Scraping the sand In the sand settling device in which a bucket is fixed, the front sprocket wheel and the rear sprocket wheel are rotatably arranged around a support shaft at both ends of a connecting arm having a substantially V shape. Both ends of the support shaft are inserted into and fixed to the support portions formed at both ends of the connecting arm, and are inserted into and fixed to the guide grooves of the guide member fixed to the side wall of the pond via the slide portions formed outside the support portions. It is configured such that it can be moved up and down along it, and an elevating device is attached to the center of the connecting arm, and can be moved up and down by this elevating device.

[Action]

In the present invention, for example, when the amount of water flowing into the pond tank increases due to heavy rain, or when the use of the sand settling device is stopped for a long time, the lifting device is activated,
The connecting arm is moved upwards, whereby the front sprocket wheel and the rear sprocket wheel, which are arranged on both sides of the connecting arm, are moved upwards.

〔Example〕

The present invention will now be described in detail with reference to an embodiment shown in the drawings.

1 to 3 show an embodiment of the settling device according to the present invention. In these figures, reference numeral 31 indicates a pond tank for sinking sand in inflow water. .

In the pond tank 31, a front sprocket wheel 33 and a rear sprocket wheel 35 are horizontally arranged at intervals.

On the other hand, on the upper surface of the lid portion 37 of the pond tank 31, a sand settling-out machine 39 for discharging settling sand is arranged, and above this, an upper sprocket wheel 41 which is a sprocket wheel for driving is arranged.

The drive shaft 43 of the upper sprocket wheel 41 has a structure in which power from a drive device 45 is transmitted via a drive chain 47.

The front side of the sprocket wheel 33, the rear side sprocket wheel 35, and the upper side sprocket wheel 41 are connected to each other, and the inside of an annular chain 49 is wound around the chain 49. The chain 51 has a bucket 51 for scooping up the sediment settling in the pond tank 31. It is fixed.

In this embodiment, a guide sprocket wheel 53 and a take-up sprocket wheel 55 are arranged horizontally spaced apart from the upper sprocket wheel 41.

The take-up sprocket wheel 55 is rotatably supported by a take-up shaft 57, and the take-up shaft 57 is horizontally movable by a take-up cylinder 59.

Further, below the take-up sprocket wheel 55, an intermediate sprocket wheel 61 is provided at both ends of the pond tank 3.
It is rotatably arranged on a support shaft 65 that is fixed to the side wall 64 of No. 1.

Therefore, in this embodiment, the front sprocket wheel 33 and the rear sprocket wheel 35 are arranged on both sides of the connecting arm 67, and the connecting arm 67 is vertically movable by the lifting device 68.

That is, as shown in FIGS. 1 and 2, the front sprocket wheel 33 and the rear sprocket wheel 35 are rotatably arranged around the support shafts 63 and 65. Both ends of 65 are inserted and fixed to support portions 69 formed at both ends of the connecting arm 67.

A slide portion is formed outside the support portion 69,
This slide part is vertically movable along a guide groove 73 of a guide member 71 fixed to the side wall 64 of the pond tank 31.

The elevating device 68 has a main body composed of a spindle 77 whose lower end is connected to the center of the connecting arm 67 via a hinge 75 and a piston 81 of a hydraulic cylinder 79 which is connected to the upper end of the spindle 77. Spindle 77
Are supported by bearings 82 fixed to the side wall 64 of the pond tank 31.

In the sand setting device constructed as described above, the driving device 4
5 is driven, the upper sprocket wheel 41 is rotationally driven, and the chain 49 causes the upper sprocket wheel 41, the guide sprocket wheel 53, the take-up sprocket wheel 55, the intermediate sprocket wheel 57, the rear sprocket wheel 35 and A bucket 51 that is driven in the direction of arrow B in the figure along the front sprocket wheel 33 and is fixed to the chain 49.
The sand is raked up by, and when the bucket 51 is located above the sand unloader 39, the sand in the bucket 51 is thrown into the sand unloader 39, and the sand settled in the pond tank 31 is
It is discharged from the sand settling machine 39 to the outside.

Then, for example, when the amount of inflow water into the pond tank 31 is increased due to heavy rain or the use of the sand settling device is stopped for a long time, the cylinder 79 of the lifting device 68 is used.
Of the piston 81 is moved upward, whereby the connecting arm 67 moves upward along the guide member 71, and as shown by the chain double-dashed line in FIG. The sprocket wheel 33 and the rear sprocket wheel 35 are moved upward.

Then, in the sediment setting device configured as described above,
The front sprocket wheel 33 and the rear sprocket wheel 35 are arranged on both sides of the connecting arm 67, and the connecting arm 67 is configured to be vertically movable by the elevating device 68.
It is possible to move the front sprocket wheel 33 and the rear sprocket wheel 35 upward by moving 7 upward, and it is possible to reliably prevent the bucket 51 from being buried in the sludge with a simple configuration. it can.

Further, in the sand settling device configured as described above, since the take-up device including the take-up sprocket wheel 55 and the cylinder 59 is arranged, the chain 4
It is possible to simultaneously take up 9 and adjust the tension.

In addition, in the above-described embodiment, the example in which the cylinder 79 is used for the lifting device 68 has been described, but the present invention is not limited to such an embodiment, and various other means such as a wire rope may be used. Of course, it is okay.

[Effect of device]

As described above, according to the present invention, the front sprocket wheel and the rear sprocket wheel are rotatably arranged around the support shaft at both ends of the connecting arm having a substantially V-shape to support them. Both ends of the shaft are inserted and fixed to the support portions formed at both ends of the connecting arm, and along the guide groove of the guide member fixed to the side wall of the pond via the slide portion formed outside the support portion. And can move up and down freely, and attach the lifting device to the center of the connecting arm,
Since the lifting device is configured to be vertically movable, there is an advantage that the bucket can be reliably prevented from being buried in the sludge with a simple structure.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the settling device of the present invention. FIG. 2 is a cross-sectional view of FIG. FIG. 3 is a top view of FIG. FIG. 4 is a longitudinal sectional view showing a conventional sand settling device. [Explanation of symbols of main parts] 31 ... pond tank 33 ... front sprocket wheel 35 ... rear sprocket wheel 39 ... sand unloader 41 ... upper sprocket wheel 49 ... chain 51 ... bucket 67 ... connecting arm 68 ... lifting device.

Claims (1)

[Scope of utility model registration request] 1. A front sprocket wheel (33) and a rear sprocket wheel (35) in a pond (31).
Are arranged horizontally at intervals, and an upper sprocket wheel (41) is arranged above the pond tank (31), and the front sprocket wheel (33), rear sprocket wheel (35) and upper sprocket wheel ( 41) are tied together to wind the inside of an annular chain (49), and the annular chain (49) is used to scoop up the sediment settling in the pond tank (31) (5).
1) In a sand settling device in which the front sprocket wheel (33) and the rear sprocket wheel (35) are fixed to both ends of a substantially arm-shaped connecting arm (67). Is rotatably arranged around the center of the connecting arm (67), and both ends of the supporting shafts (63, 65) are inserted into and fixed to supporting parts (69) formed at both ends of the connecting arm (67). Guide groove (7) of the guide member (71) fixed to the side wall (64) of the pond tank (31) via the slide portion formed on the outside of the (69).
3) is movable up and down along the connecting arm (6
An elevating device (68) is attached to the center of 7), and the elevating device (68) is configured to be vertically movable.