JPS6021841B2 - Remaining green concrete processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention cleans the remaining ready-mixed concrete of a ready-mixed concrete plant or the remaining ready-mixed concrete in the drum of a mixer truck, and separates the aggregate from the washing water to produce sludge-free water and sludge. This invention relates to a method for reprocessing residual live concrete in which the water containing sludge is separated from the water containing sludge, and the water containing sludge is reused as washing water, and the water containing sludge is reused as mixing water for concrete IJ.

Conventionally, such processing involves the process of storing a single batch of residual raw concrete in a mud collecting tank, and from there using a bucket conveyor or other conveying means, it is guided to a coarse aggregate recovery device installed at a high level, and then lowered. The sludge is separated into coarse particles and sludge, and is then led to a sludge settling tank to precipitate Tsumugi aggregate, or is further led directly to the Tsumugi village recovery facility using pump means.

However, this method has disadvantages in that the equipment becomes large and the conveyor becomes very expensive, increasing equipment costs. In addition, the remaining fresh concrete in the mud collection tank is directly fed into a trommel using a sand pump, and then into a crusher to separate and collect gravel and sand one after another.In this case, the sand pump removes the gravel and sand once The pump must be able to be pumped up quickly, making it expensive and at the same time causing problems such as a short lifespan of the pump and the inability to operate due to gravel clogging. ．． In addition, without using a bucket conveyor or sand pump as mentioned above, a trommel is placed above the crusher.
It is also possible to pour the remaining fresh concrete directly into a trommel and gradually separate and collect the gravel and sand, but in this case, the entire car wash area needs to be 1.8 to 2 tables high, and the cost of foundation work is high. There was a drawback that it required

The present invention aims to eliminate such drawbacks of the conventional methods, and its feature is that the remaining fresh concrete can be directly fed with the energy falling from the discharge outlet of a mixer truck or the like. A coarse aggregate recovery device having a water gutter, a sewage tank disposed on the underside of the coarse aggregate recovery device, a pump means provided in the sewage tank, and sewage through piping from the pump means. By making the remaining fresh concrete processing equipment consist of a fine aggregate recovery equipment that is supplied with fine aggregate, the entire equipment can be made compact and the work can be carried out extremely efficiently. An example of the device of the present invention will be explained based on the drawings.

Figure 1 is a flow sheet schematically showing the whole, Figure 2 is a coarse aggregate recovery device, where A is a plan view and B is the X of A.
- A side view in the X-ray direction; C is a side view of A in the Y-Y direction.

Reference numeral 1 indicates a car wash on the ground surface, and 2 indicates a trommel as a primary recovery device for collecting coarse particles such as gravel, which is installed on the same ground surface as the car wash.

3 is the first sewage tank bored under the bottom of the trommel; 4
Reference numeral 5 indicates a sand pump provided in the water tank, and 5 indicates a crusher as a secondary recovery device for recovering pongee aggregate such as sand, which is connected to the sand pump 4 via a pipe 6.

Reference numeral 7 denotes a second sewage tank, into which the remaining sludge (cement hydrate) water from which sand and the like have been separated in the crusher 5 flows through a pipe 8.

) In the second sewage tank, there is a pump 1 together with a fly Azusa Tsubasa 9.
0 is provided, and the sludge is sent from a sump pump 10 to a sewage treatment device 12, which will be described later, via a pipe 11 in order to reuse the sludge for mixing concrete and to reuse the water without sludge for car washing. Next, the sewage treatment device 12 is constructed as follows.

13 is a purification tank; 14 is an adjustment tank provided under the bottom surface of the tank; the adjustment tank is provided with a fly wing 15 and a pump 16;
6 is a batch saver 1 which is fed through a pipe 17 while adjusting the sludge water flowing down from a purification tank into an adjustment tank to an appropriate concentration in the tank for mixing concrete.
8 into a water measuring device 19, and the required amount is measured and used.

At this point, excess sludge water overflows into pipe 2.
1 and then refluxed into the adjustment tank 14. On the other hand, 22 is a water storage tank into which the sludge separated from the sludge in the purification tank 13 overflows from its upper edge and is passed through the pipe 23.
In addition, some fresh water from underground water or industrial water is auxiliary inflowed through a pipe 24. In this case, the stored water is used for car washing through a pipe 26 using a pump 25.
In addition, water in the tank is taken out via a pipe 28 using a pump 27 for concentration adjustment in the adjustment tank 14. 2
9 is a concentration meter.

An example of the apparatus of the present invention has been described above based on a flow sheet, and FIG. 2 shows an explanatory diagram of the actual arrangement of the coarse aggregate recovery equipment.

Both the trommel 2 and the crusher 5 are provided on the same ground surface 1 at positions facing each other in a perpendicular direction.
The drawing shows that three concrete mixer trucks can be washed at the same time, and it is a bag water gutter heading towards Mitsukawa Trommel 2. In this case, the first sewage tank 3 below the trommel 2 is formed on a sloped wall a, and a sand pump 4 on the bottom surface is formed.
It is movably suspended from a trolley-equipped chain block 32 on a rail frame 31. This is to ensure that the sewage is pumped up uniformly by moving around the sewage tank at any time. Reference numeral 33 denotes a hopper attached to the outlet end of the trommel 2, and the coarse bones separated by the trommel 2 fall through the hopper onto a belt conveyor 34, and the belt conveyor transports them to the collected gravel tank. It is taken out within 35 minutes.

The wastewater that accumulates in the premises during this process is pumped to a pipe 37 by a pump 36.
The water is returned to the first sewage tank via the sewage tank. Reference numeral 37 denotes a crusher supply port, and the waste water from the sand pump 4 is supplied to this part through the pipe 6, and the sand that settles on the bottom is scraped up by the screw conveyor b and taken out to the recovery sand tank 38, and the waste water is The water overflows from the discharge port 39 and flows into the second sewage tank 7 via the pipe 8.
As described above, this embodiment deals with the treatment of the remaining ready concrete, and first, the remaining ready concrete is transported at a position on the ground surface and only by the falling energy when being discharged from the discharge port of the mixer truck. After primary recovery of gravel, etc. is performed using a coarse aggregate recovery device, the remaining wastewater is sent to a fine aggregate recovery device using a sand pump for secondary recovery of sand, etc. Therefore, there is no need for special bucket conveyor equipment, and a commercially available small-diameter, inexpensive sand pump or the like can be used as a transportation means for transporting wastewater, and there is no need for a special pump as in the past.

Further, problems such as inoperability due to jamming do not occur, and all the equipment can be installed on the same ground surface, which reduces equipment costs and facilitates operation and use. In addition to the above-mentioned effects, the present invention has the advantage that the crusher, which is a fine aggregate recovery device, is used to supply sewage through piping from the pump means, so it can be placed at any desired location. However, it is superior to the conventional device which has a trommel layer above the crusher.
The equipment can be installed at a significantly low cost, and inspection and maintenance are also easy.

[Brief explanation of drawings]

The attached drawings show an example of the device of the present invention, and the first
The figure is a flow sheet showing the whole in a formal manner, and Figure 2 shows a coarse aggregate recovery device, where A is a plan view and B is A.
C is a side view of A in the direction of the X-X line, and C is a side view of A in the direction of the Y-Y line. 1... Car wash, 2... Trommel, 3
.....First sewage tank, 4..Sand pump, 5..Crusher, 7..Second sewage tank, 13..Purification tank, 14...
Adjustment tank, 35... Recovery gravel tank, 38...
・Collected sand tank. Figure 2

Claims (1)

[Claims] 1. A coarse aggregate recovery device having a water collection gutter that can receive the remaining fresh concrete directly by the energy falling from the discharge outlet of ready-mixed concrete or a mixer truck, and a coarse aggregate recovery device arranged under the bottom surface of the coarse aggregate recovery device. A processing device for residual living concrete, which comprises a sewage tank, a pump means provided in the sewage tank, and a fine aggregate recovery device that receives sewage water via piping from the pump means.