JPH0257998B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is an improvement regarding a separation device for collected dust, dirt, and sand before dumping.

[Prior art] The necessity of separate treatment when dumping dust and dirt collected during road cleaning work in urban areas has not yet become commonplace, but in the very near future standards for dumping will become stricter and administrative regulations will There is a strong possibility that guidance will be given and he will no longer be able to use his discretion.

Currently, it is becoming difficult to secure disposal sites without disposal restrictions, and an increasing number of locations are imposing disposal requirements that require three categories (earth and sand, combustible materials, and noncombustible materials) or at least two categories (earth and sand, garbage).

In order to separate the dust and dirt before disposal, the dust and dirt collected by road cleaning vehicles was collected on the ground and then separated again. Because it is difficult to separate and is a source of pollution such as dust and odor, mobile separation equipment has been developed.

Another example of using a rotary sieve for waste treatment is ``Municipal Waste Separation Method'' (Japanese Unexamined Patent Publication No. 157378/1983), and an example of using a rotary sieve on a movable trolley is `` "Gravel sorting machine" (1987)
-106588, Figure 4).

As shown in FIGS. 3A and 3B, a rotary sieving machine 12a is mounted on a steel frame or trailer chassis 2a, which is made portable by rubber tires 3a.
Mainly, the shovel loader 1 of the cleaning work vehicle 10a
Feed hopper 7 that receives collected materials from 1a
a, belt feeder 8a connected to the bottom of the hopper;
A plurality of discharge hoppers 30 connected to the bottom of the rotary sieve are installed in combination according to their respective functions.

When receiving materials to be separated from a cleaning work vehicle, the ground support members 31 provided at both ends of the chassis are pressed against the ground to support the chassis, and the collected materials are passed through a shovel loader 11a, a feed hopper 7a, and a belt feeder 8a to be transferred to a rotary sieve machine. 12a.

Once the acceptance is complete, the sorting process continues, and the discharge conveyor 32 arranged on the ground discharges each category onto the ground or onto a truck loading platform.
The basic specification is that when a series of sorting processes is completed, the supporting force of the grounding support member is released, and the device can be guided to the towing truck 4a and moved to the destination.

[Problems to be Solved by the Invention] The mobile dust/soil separation device of the prior art allows a separation plant that is commonly used on the ground to combine a raw material sieve and a means for supplying and discharging the material to the sieve. There are several problems because it is simply mounted on a transportable chassis.

First, in order to receive the raw material to be separated, it is necessary to install the feed hopper 7a as low as possible, so the belt feeder 8a inevitably becomes long, and the overall length of the apparatus inevitably increases.

If a long piece of equipment is lost, movement will be severely restricted and mobility will be lost.

A ground support member 31 is separately required below the support legs 33 of the feed hopper 7a in order to propagate the dynamic load at the time of raw material input to the ground.

While the equipment is in operation, unless the raw materials separated by the sieve are constantly discharged out of the equipment, the end of the equipment will become clogged and the equipment will stop functioning.

Therefore, there are problems in that it is impossible to frequently move the collection operation site or to operate the apparatus while it is in motion.

Due to the large overall length, which is likely to be subject to restrictions on movement, and the configuration, which is subject to restrictions on movement due to the pre- and post-processes of supply and discharge, it is relatively difficult to keep the device in a predetermined position after it has been moved. Materials to be separated that have been stored for a long period of time and collected are transported to the equipment using cleaning vehicles or reloaded transport vehicles.

In addition, it is often necessary to discharge the sorted materials out of the device on the spot, and then transfer them to a special transportation vehicle for each category and move them to a disposal site.

Even though they are advertised as mobile, their radius of action is extremely limited, and it is hard to say that they are able to demonstrate their mobility and be effectively used for sorting.

As a result, there is a significant decrease in the efficiency of treatment operations, an increase in treatment costs, and the occurrence of constant pollution such as noise, bad odor, and dust at the treatment site, which cannot be solved using conventional technology developed for the purpose of solving these problems. This is sufficient and shows that problems still remain in urban administration.

The conventional technology shown in Figure 4 is similar to the technology shown in Figures A and B, and although it is a portable separator, the gravel separated by the rotating sieve is constantly collected on the spot in directions B and C outside the device. Therefore, this idea is only possible at a gravel dump where separation and discharge occur in the same place, and it would be unthinkable to try to separate them during transportation. In addition, since this configuration supplies the raw material from above A of the rotary sieve, it is not as long as the technology shown in Figure 3 and can exhibit maneuverability, but it also requires a special device to feed the raw material into the hopper located at a high position. Become.

Furthermore, the technology disclosed in Japanese Patent Application Laid-open No. 54-157378 uses a fixed rotary sieve to separate municipal waste, but the gist of this is to suction floating lightweight materials such as paper and plastics, mainly due to particle size. This method is not intended for the treatment of the sieve after the rotary sieve that is separated by the sieve.

In order to solve the above-mentioned problems, the present invention consists of an easily movable overall length and a structure that reduces restrictions on movement, and allows for flexible separation processing to increase separation efficiency.
On the other hand, the purpose of the present invention is to provide a new mobile dust/soil separation device that can significantly reduce the occurrence of pollution.

[Means for Solving the Problems] The mobile dust/soil separation device according to the present invention has a rotary sieve rotatably mounted on a portable platform, and has a receiving position of the material to be separated lower than the rotary sieve and a position above the rotary sieve. The above-mentioned problem can be solved by providing a feed hopper rotatably supported between the material supply port of the rotary sieve and independent storage tanks under the plurality of sieves of the rotary sieve, which can be discharged freely. Settled.

In addition, the rotation of the feed hopper is supported by a link mechanism and a hydraulic cylinder so that it can be raised and lowered from the transportable cart, a belt feeder inserted into the lower part of the feed hopper, and a ground support base fixed to the lower part of the belt feeder are integrated. It is also shown that the discharge from the plurality of storage tanks is comprised of a discharge plate that slides into sliding contact with the inner wall so as to be reciprocatable within each storage tank.

[Function] The device of the present invention can be roughly divided into two components: a means for supplying a fixed amount to the separator (hereinafter referred to as "requirement") and a means for discharging from the separator (hereinafter referred to as "requirement").

Requirements and effects of the requirements will be explained based on FIGS. 1A to 1E showing embodiments of the present invention.

The requirements can be further divided into two functions: receiving the material to be separated and supplying it to the sorter in fixed quantities.

FIG. 1A shows a state in which objects to be sorted collected from outside the apparatus, such as a road cleaning vehicle, are being accepted, and this requirement is such that the object is easily received at a low position above the ground.

Once this acceptance is complete, the requirements are raised high above the ground by an upward driving force on the equipment trolley, reaching the position shown in Figure 1B, where they are transferred to the sorter, which has another function. The supply effect of fixed quantities begins to work.

The separator has already started operating in this state.
Even when the entire device is running, the separator continues to operate, and the separated materials are sent out one after another to the outside of the machine.

The requirements for this include two functions: first, a function to once receive the materials to be separated into categories, and a function to discharge the received materials to be separated out of the device.

Figure 1C shows a state in which the sorted materials sent out from the sorter are temporarily accepted and stored even while the machine is in motion, and Figures 1D and E show the equipment when it has reached its destination (disposal location). This shows a state in which the second function is activated and the objects to be separated are discharged from the apparatus in each category.

As described above, the two functions provided in the two requirements constituting the apparatus of the present invention operate at desired times to complete the operations from receiving to discharging the objects to be separated.

[Example] An example of the present invention will be described based on FIGS. 1A to 1E and FIGS. 2A and 2B.

In each of these figures, a transportable cart 1 includes rubber tires 2 and a chassis 3, and moves the device integrally with a traction section 4.

Towing may be an independent trailer.

On the left and right sides of the upper rear part of the chassis, there are a pair of links 5, 5 whose pin positions form a parallelogram, and the objects to be separated are supported by a hydraulic cylinder 6 connected by a pin to the link on one side of each link. There is a feed hopper 7.

The feed hopper has a box-like body with a tapered trapezoidal cross section, and a belt feeder 8 is attached to the bottom of the feed hopper, and a ground support base 9 is integrally assembled to the bottom of the belt feeder, and these members allow the feed hopper to be raised and lowered freely. The driving requirements are specifically configured.

That is, the apparatus is stopped and the position of the feed hopper 7 is lowered to a lower level above the ground in order to receive the materials to be separated collected from the shovel loader 11 of the cleaning vehicle 10 as shown in FIG. 1A.

At this time, the ground supporting body presses against the ground G and transmits the total static load and the dynamic load associated with acceptance to the ground.

When the feeding is completed, the feed hopper 7, together with the belt feeder 8 and the ground support 9, moves up in a circular arc along the trajectory of the link 5 by the driving force of the hydraulic cylinder 6, and passes through the rotary sieving machine (trommel) 12, which is a sieving machine. Reaches a height that fits the supply opening.

Since the pin positions of the links 5 and 5 mutually form a parallelogram, the feed hopper 7 can move while always maintaining the same inclination angle with respect to the horizontal.

When the state shown in FIG. 1B is reached, the belt feeder 8 attached to the bottom of the feed hopper starts operating, cuts out a fixed amount of the material to be separated in the hopper, and starts feeding it into the rotary sieve machine which has already started operation.

It is desirable that the material to be separated in the hopper does not leak out from the hopper opening while moving from the hopper receiving position to the supply position.

FIGS. 2A and 2B show the operation of this part in this embodiment. During the movement from receiving the material to be separated, the discharge side opening D of the feed hopper 7 is closed to the lid 13 as shown in FIG. 2A. It is obstructed.

The lid 13 has a shaft 15 rotatably supported at both ends by bearings 14 fixed to the hopper side plate.
is connected to.

During movement, the lid is pressed down by the action of an annular weight 18 rotatably mounted around a pin 17 provided at the tip of an arm 16 fixed to the shaft, thereby forcing the lid into a closed state.

The feed hopper 7 rises and the rotary sieve machine 12
When the feed hopper approaches the feeding position, the weight 18 comes into contact with the stopper 20 fixed to the exterior 19 of the device as shown in FIG. Lid 1 is pushed up through the arm 16 by lever action.
3 opens and the quantitative cutting of the material to be separated starts from the opening D.

The materials to be sorted into categories by the rotary sieve fall into storage tanks 21 and 22 provided at the bottom of the sieve and are stored therein.

Discharge plates 23 and 24 are respectively attached to the storage tank so as to be able to reciprocate horizontally in sliding contact with the inner wall, and when the device reaches the discharge destination (disposal location), the drive machines 27 and 28 of the discharge plates start operating, respectively. The discharge plate slides along the inner wall of the storage tank and tries to push out the material to be separated from the tank.

This force causes the lid 25 of the storage tank 21 to move as shown in FIG.
As shown in FIG. 1D, the lid 26 of the storage tank 22 is pushed down to create an opening through which the objects inside are discharged out of the apparatus in sections.

Note that 29 in FIG. 1A indicates the power mechanism of the device.

[Effects of the Invention] Since the present invention achieves the above-mentioned effects, the receiving and metering supply means are movable up and down, so that the total length of the apparatus can be much shorter than that of the conventional apparatus.

Therefore, restrictions on running are largely removed and mobility comparable to that of a large truck can be obtained.

In addition, dust and dirt collected by road sweeping vehicles etc. are accepted at any point on the road at any time, and the device is separated and processed while the device is running or stopped, and at the same time, the separated dust and dirt are discharged outside the device. This makes it possible to store each category in the device and discharge it all at once at any location.

In other words, it has enabled a significant improvement in separation efficiency and a significant reduction in work costs.

Collected materials to be separated are accumulated on the primary road surface,
This solves problems such as pollution and traffic obstruction caused by leaving the equipment on the road for long periods of time or by depositing separated materials in sections on the primary road surface.

A unique effect of this embodiment is that the lid 13 of the receiving hopper and the lids 25 and 26 of the storage tank are closed at all times except when discharging, which prevents dust from scattering and further promotes the effect of preventing pollution. .

Another advantage unique to this embodiment is that the ground support is fixed to the bottom of the feed hopper, so dynamic loads during reception are automatically transmitted to the ground without the need to use support legs or ground support members like in the past. This is something that can be done.

[Brief explanation of drawings]

1A to 1E are front partial sectional views A to D and side partial sectional views E showing the operation of the embodiment of the present invention;
2A and 2B are partial front sectional views showing the receiving hopper supply function of the embodiment, and FIGS. 3A and 3B are front views A and side views B showing the prior art. FIG. 4 is a perspective view showing another prior art. 1... Portable trolley, 5... Link, 6... Hydraulic cylinder, 7... Feed hopper, 8... Belt feeder, 9... Ground support stand, 12... Separator (rotary sieve machine), 21, 22 ...Storage tank, 23, 24
...Ejection board.

Claims (1)

[Scope of Claims] 1. In a dust/soil separation device in which a rotary sieve is rotatably mounted on a transportable trolley, a space between a receiving position of a material to be separated that is lower than the rotary sieve and a material supply port above the rotary sieve is provided. A mobile dust and sand device comprising a rotatably supported feed hopper and independent storage tanks under a plurality of sieves of the rotary sieve, each of which is dischargable and provided on a cart. 2. The rotation of the feed hopper integrates the feed hopper, which is supported by a link mechanism and a hydraulic cylinder so that it can be raised and lowered from the transportable cart, the belt feeder attached to the bottom of the feed hopper, and the ground support base fixed to the bottom of the belt feeder. A mobile dust/soil separation device according to claim 1, which is assembled into a mobile dust/soil separation device as set forth in claim 1. 3. The mobile dust/soil separation device according to Claims 1 and 2, which comprises a discharge plate that slides against an inner wall so that discharge from a plurality of storage tanks can be reciprocated within each storage tank.