JPS6338917Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] Regarding a sorter that sorts aggregate from washing wastewater of concrete-related equipment such as concrete transport vehicles, a sorter with a cleaning brush that specifically prevents clogging of the sorting net. Regarding.

[Prior art]

The following types of sorting machines are commonly used to separate and recover aggregates contained when treating washing wastewater containing large amounts of cement components from concrete-related equipment such as concrete transport vehicles.
The structure usually consists of a cylindrical sorting machine body that rotates about a horizontal axis, a cleaning wastewater supply port, an aggregate receiving port, a sewage hopper, a pedestal, etc. The main body of the sorting machine usually has a cylindrical part for about 1/2 of its total length, and the remaining part is a slanted cylindrical part whose diameter gradually decreases. Most of the periphery is covered with a wire mesh for sorting, and it has a feeding mechanism consisting mainly of continuous belt-shaped spiral or intermittent feeding blades along the inner surface.

Washing wastewater is supplied from the washing wastewater supply port to the cylindrical side of the separator body, water is discharged to the sewage hopper through a wire mesh for sorting, and the contained aggregate is moved by the feed mechanism as the separator body rotates, and the water is transferred to the sewage hopper. It is discharged through the cylindrical part to the aggregate socket and collected.

[Problem that the invention attempts to solve]

In conventional sorting machines, as the sorting machine body rotates, the wire mesh for sorting is exposed to concrete cleaning wastewater containing a large amount of cement components in the lower part, and is exposed to air in the upper part. Because this is repeated, when the concrete is operated for a long time, mineral substances such as callucium contained in the concrete wastewater precipitate mainly as calcium carbonate and adhere to the surface and inner periphery of the mesh, and as it grows and expands. Therefore, the opening of the wire mesh becomes smaller and eventually becomes clogged, making it impossible to separate aggregate from water, sand, etc.

To repair such a clogging condition, there is usually no other way than manually scraping or knocking off the deposits using a powered chisel, etc., which not only requires a great deal of labor and time. During this period, the use of the sorting machine must be suspended.

[Means to solve the problem]

In the sorting machine with cleaning brushes of the present application, the main body of the sorting machine is integrally formed with a cylindrical part consisting of a cylinder and a sloped cylindrical part whose diameter gradually decreases following this cylindrical part, and the outer peripheral surface of the sorting machine is covered with a sorting mesh. It has a continuous spiral band or intermittent feeding blades on its inner surface, and rotates around a horizontal body axis passing through the center.It mainly contains a large amount of cement components for concrete-related equipment such as concrete transport vehicles. In a cylindrical sorting machine used to sort out solids such as aggregates from washing waste water contained in water, each of the sorting nets having the required openings covering the outer circumferential surface of the cylindrical part and the sloped cylindrical part is It has a cylindrical brush for cleaning and a sloped cylindrical brush that are in contact with each other, and the brush shafts forming the center of these brushes are located substantially on one plane including the main body axis, and are connected to each other in series by a universal joint. The main body shaft and the tension sprocket gear are rotated in conjunction with each other by a roller chain in the same direction of rotation, and the bearing part of the brush shaft is connected to the outer circumferential surface of the brush shaft and the cylindrical part or the sloped cylindrical part. The tip of the brush bristles is set to reach the inside of the sorting mesh through a bearing height adjustment mechanism mainly composed of screws for adjusting the spacing, and further includes a water injection pipe for the brush. It is characterized by the presence of

[Function and Examples]

Next, an embodiment will be described with reference to the drawings, and the operation will also be explained.

As shown in FIGS. 1 and 2, the sorter main body 1 is integrally formed with a cylindrical portion 1b that occupies about half of the left side, and a sloped cylindrical portion 1a that is located on the right side and has a gradually decreasing diameter. At the same time, its outer peripheral surface is covered with a sorting net 3. The opening of the sorting net 3 should be one that allows water and sand in the wastewater to pass through but not gravel, and is preferably approximately 5 mm in size, and a wire mesh made of iron or stainless steel is suitable.

The sorting machine main body 1 has a continuous spiral strip 2 with a relatively low height as a feeding mechanism on its inner surface.
A horizontal main body shaft 4 passing through the center is supported by a bearing 5, and is driven and rotated by a prime mover (not shown) via a sprocket gear 6. When the rotation direction of the sorting machine main body 1 is clockwise as seen from the right side of the figure as shown in FIGS. The object is sent by the strip 2 from the left side to the right side in the figure.

A gradient cylinder brush 16a and a cylinder brush 16b for cleaning the screening net 3 covering the outer peripheral surface of the main body 1 are tensioned by a roller chain 12a via a sprocket gear 9 provided on the shaft 4 of the main body. A brush drive shaft 14 is driven via the sprocket gear 11 and the sprocket gear 10, and from this brush drive shaft 14, the brush of the cylindrical brush 16b passes through the universal joint 15, the brush shaft 14a of the sloped cylindrical brush 16a, and the universal joint 15. Shaft 14b
Rotation occurs when these are connected in series.

The brush drive shaft 14 and the brush shafts 14a and 14b are located substantially in the same plane with respect to the main body shaft 4 of the sorter main body 1, and rotate in the same direction.

The bearings 17 of the brush drive shaft 14 and the brush shafts 14a and 14b are fixed by height adjustment bolts 22 with fixing nuts 24 using a bracket 12 provided on a frame (not shown) as a support, as shown in FIG.
A fixing bolt 19 and a fixing nut 2 are mounted on the bearing height adjustment mechanism 13 consisting of a bearing plate 18 that engages with this and can be fixed after adjusting the height with the adjusting nut 23.
1. It is fixed with a fixing device such as a washer 20.

If the circumferential speeds of the outer circumferential surfaces of the gradient cylindrical brush 16a and the cylindrical brush 16b are set to approximately the same speed as the circumferential speed of the outer circumferential surface of the sorter main body 1, the former and the latter will be different because their rotational directions are the same. The direction of motion at the outer circumferential surfaces where they contact each other is opposite, and the relative velocity increases to the sum of the absolute values of the circumferential velocities, or approximately twice the magnitude.

In addition, the gradient cylindrical part brush 16a and the cylindrical part brush 1
The outer shape of the cylindrical portion 6b is usually cylindrical, and a diameter of 1/2 or less of the diameter of the cylindrical portion 1b is sufficient.

Gradient cylindrical brush 16a and cylindrical brush 16b
The brush bristles 26 are preferably made of metal wire such as steel wire with a diameter of about 0.2 mm or more, or fibers such as nylon or the like with a diameter of about 1 mm or more and having elasticity.

The gradient cylindrical part brush 16a and the cylindrical part brush 16b change the distance from the surface of the sorting machine body 1 by adjusting the bearing height adjustment mechanism 13, and the tips of the brush bristles 26 reach the inside of the mesh of the sorting net 3. Set it as follows.

Gradient cylindrical brush 16a and cylindrical brush 16b
Brush water injection pipes 25a and 25b are provided near the portions of the main body 1 of the sorting machine that come into contact with the sorting net 3, respectively, so that fresh water for cleaning can be injected into the contacting portions as necessary.

In addition, as shown in Figs. 1 and 2, there is a waste water supply port 8 on the left end of the main body 1, next to the center, and an aggregate receptacle 27 on the right end. A hopper 7 is provided.

Since the sorting machine with cleaning brushes of the present invention has the above-mentioned configuration, when cleaning waste water from concrete transport vehicles, etc. is supplied into the sorter main body 1 from the waste water supply port 8, as the brush rotates, the sewage in the cleaning waste water flows. , sand, etc. pass through the screening net 3 and are discharged into the sewage hopper 7, while the aggregates, etc. remaining on the screening net 3 are transferred to the strip 2 from the left side to the right side in FIGS. 1 and 2. and is discharged into the aggregate socket 27 from the right end of the sloped cylinder portion 1a.

Gradient cylindrical brush 16a and cylindrical brush 16b
The brush drive shaft 14, the brush shafts 14a and 14b
The height of the bearing 17 can be freely changed by adjusting the height of the bearing plate 18 by operating the adjustment nut 23 of the bearing height adjustment mechanism 13. Since the state of contact with the brush bristles 26 can be adjusted, the tip of the brush bristles 26 is usually set so as to reach within the opening of the sorting net 3, and even if the brush bristles 26 are worn out due to use, they can be easily readjusted.

The sorting net 3 which forms the outer surface of the sorting machine main body 1 and the outer surfaces of the gradient tube brush 16a and the cylindrical brush 16b have opposite directions of movement at their contact points, assuming that the circumferential speeds are equal, so they rotate while rubbing strongly against each other at a relative speed which is about twice as fast as the circumferential speed. During this time, the brush bristles 26 which are made of steel wire or nylon or the like and have high elasticity go in and out of the mesh of the sorting net 3, at one moment they strongly thrust and rub against the inside of the mesh, and at the next moment they strongly rub against the outer surface. By repeating this, the sorting net 3 is cleaned and strong deposits consisting mainly of calcium carbonate are removed, preventing them from adhering and forming.

The fresh water injected from the brush water injection pipes 25a and 25b is normally used to clean the sorting net 3 after the sorting work such as cleaning wastewater is completed, but if the sorting net 3 is extremely dirty, water may be injected during the sorting work as well. is preferred.

The main body shaft 4 and the brush drive shaft 14 are connected to the sprocket gears 9, 10 and the tension sprocket gear 1.
1 and roller chain 12a, even if the brush drive shaft 14 is raised or lowered by adjusting the bearing height adjustment mechanism 13, the tension sprocket gear 11 can be adjusted to maintain the appropriate tension of the roller chain 12a. can be retained.

Also, the brush drive shaft 14, the brush shafts 14a, 14
b are connected to each other by the universal joint 15, so even if there is a difference in the vertical position or inclination of each position by the bearing height adjustment mechanism 13, there will be no problem in transmitting the rotational force.

〔effect〕

Since the cleaning brush-equipped sorter of the present invention has the configuration and function as described above, the conventional sorter can eliminate mineral precipitates such as calcium that are always generated when sorting aggregates from cement-related cleaning wastewater. It mainly sticks to the sorting net as calcium carbonate, clogging it and making it difficult to sort it out.Finally, even sewage and sand are discharged into the aggregate receptacle along with the aggregate, making it impossible to operate and use it. Whereas it required a great deal of labor to do the chiselling work, etc., the present invention completely eliminates this drawback, and can be used not only to sort out wastewater that contains contaminants that generally tend to cause clogging.
It is particularly effective for wastewater treatment in the concrete industry.

Furthermore, even if the brush bristles are worn out, the cleaning brush itself can be moved closer to the sorter body and used, making it even more economical.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing only essential parts for explaining the embodiment, and FIG. 2 is a front view. FIG. 3 is a side view showing only the main parts of the bearing height adjustment mechanism as viewed from A to A in FIG. 2. FIG. 4 is an explanatory diagram showing only essential parts for explaining the relationship between the main body shaft and the brush drive shaft as viewed from B to B in FIG. 2. FIG. 1...Sorting machine main body, 1a...Gradient tube part, 1b...
...Cylindrical part, 2...Spiral band-shaped body, 3...Selection net, 4...Main shaft, 5...Bearing, 6,9,10...
...Sprocket gear, 7...Sewage hopper, 8...
...Drainage supply port, 11...Tension sprocket gear, 12a...Roller chain, 12...Bracket, 13...Bearing height adjustment mechanism, 14...
Brush drive shaft, 14a, 14b...Brush shaft, 1
5... Universal joint, 16a... Gradient cylinder brush, 1
6b... Cylindrical part brush, 17... Bearing, 18...
Bearing plate, 19...Fixing bolt, 21, 24...Fixing nut, 22...Height adjustment bolt, 23...Adjustment nut, 25a, 25b...Brush water injection pipe, 2
6... Brush bristles, 27... Aggregate socket.

Claims (1)

[Scope of utility model registration request] The main body of the sorting machine is integrally formed from a cylindrical part and a sloped cylindrical part whose diameter gradually decreases following this cylindrical part, and its outer circumferential surface is covered with a sorting net, and its inner surface is covered with a sorting net. It has a continuous spiral band or intermittent feeding blades, and rotates around a horizontal body axis passing through the center.It mainly handles cleaning wastewater containing large amounts of cement components from concrete-related equipment such as concrete transport vehicles, and aggregates, etc. In a cylindrical sorting machine used to sort out solids,
The brush axes of the cleaning cylindrical brush and the gradient cylindrical brush provided in contact with the sorting net covering the outer peripheral surfaces of the cylindrical portion and the gradient cylindrical portion are substantially located on one plane including the main body axis. are connected to each other in series by a universal joint, and are rotated in conjunction with each other in the same rotational direction by a roller chain via the main body shaft and a tension sprocket gear, and the bearing portion of the brush shaft is connected to the brush shaft and the cylinder. The tips of the brush bristles are set to reach the inside of the sorting mesh through a bearing height adjustment mechanism mainly consisting of screws for adjusting the distance between the brush bristles and the outer circumferential surface of the gradient cylinder part. A sorting machine with a cleaning brush, further comprising a water injection pipe for the brush.