JPH032761B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for efficiently vacuum transporting garbage in high-rise buildings and the like.

BACKGROUND TECHNOLOGY Buildings generate large amounts of various types of garbage such as kitchen waste and miscellaneous garbage. In order to collect such waste quickly and labor-savingly, a vacuum transport system for waste has been adopted.

In a conventional transportation system, an input port is provided on each floor of a building, and the garbage inputted from the input port falls through a dust chute pipe, is vacuum-transported by a transport pipe, and is stored in a collection container. Furthermore, in order to reduce the diameter of the transport pipe, a method is used in which a crusher is provided at the bottom of the dust chute pipe to crush the dust and then send it to the transport pipe. If the building is on a low floor, a transport system with a single dust chute may be sufficient. However, in a high-rise building or a skyscraper, using only one dust shunt pipe is not preferable because the falling distance becomes too long and the problems of impact noise and vibration caused by falling objects occur. For this reason, a method used in high-rise buildings is to install multiple dust chute pipes that cover about the 10th floor. When garbage is transported in a vacuum, the pressure of the air flowing through the transport pipes decreases as it goes downstream, so all dust chute pipes have negative pressure. This negative pressure acts on the door of the garbage inlet, and it is very difficult to open this door manually.

In order to avoid such inconvenience, a valve is installed at the bottom of each dust chute pipe, and the valve installed in the dust chute pipe into which waste is being input is closed to cut off the flow of air between the transport pipe and this dust chute pipe. The inside of the pipe is prevented from becoming negative pressure (for example, Japanese Patent Application Laid-open No. 57-67401).

Problems to be Solved by the Invention In the conventional method, as described above, a valve is provided in each dust chute pipe to prevent the generation of negative pressure. However, the diameter of the dust chute pipe is generally large, about 550 mm, so that the thrown garbage can fall through the dust chute pipe without any hindrance. Valves to be connected to such large diameter pipes are quite expensive. Furthermore, as buildings become taller, the number of dust shunt pipes increases, and more such valves must be used. Furthermore, since there are many different types of garbage that are thrown in, the garbage may clog the valve and interfere with operation.

Therefore, the present invention provides a device for vacuum transporting dust by reducing the negative pressure inside the dust chute pipe without using such a valve.

Means for Solving the Problems Means for solving the problems described above will be explained below using FIG. 1 corresponding to the embodiment.

This invention includes; transportation pipes 11 and 12 whose one end is connected to the air introduction pipe 10 and whose other end is connected to the blower 8;
In the vacuum transport device for garbage, which is composed of a plurality of dust chute pipes 1, 2, and 3 connected to the transport pipe via pipes 6b and 6c, the top of the dust chute pipe 1 in the highest layer is communicated with the outside air.

B. Connect the top of each of the other dust chute pipes 2, 3 and the lower part of the dust shunt pipe adjacent to and located above this dust chute pipe with a ventilation valve 14,
They are connected by communication pipes 15 and 17 via 16.

C. Close all the ventilation valves located below one dust chute pipe into which garbage is input, and open all the vent valves located above the dust chute pipe.

We are taking technical measures.

Effect The present invention aims to reduce negative pressure by employing the above-mentioned technical means.

(1) The effect of reducing negative pressure in the dust chute pipe when garbage is thrown into the dust chute pipe 1 (the dust chute pipe at the highest level) will be explained.

The air inflow system is two systems: air introduction pipe 9 → dust chute pipe 1 and air introduction pipe 10,
Both join at the connecting hopper 7a and form the transport pipe 11.
flows into. The pressure within this dust shute pipe is lowest at the bottom of the pipe, and its value corresponds to the atmospheric pressure minus the pressure loss of the air introduction pipe 10. That is, the negative pressure is at its maximum at the lower part of the dust chute pipe, and this negative pressure corresponds to the pressure loss. The pressure loss is proportional to the square of the air flow rate. In the device of the present invention, air is sucked not only from the air introduction pipe 10 but also from the air introduction pipe 9, so the flow rate of the air introduction pipe 10 is lower than when air is taken in from one place. 10 is reduced, so the negative pressure in the dust chute pipe 1 is reduced. Also, all the ventilation valves located below this dust chute pipe are closed, that is, the ventilation valves 14 and 16 are closed. Therefore, a part of the air flows of the two systems described above do not flow into the dust shute pipes 2 and 3, and as described above, these air flows join the transport pipe 11, pass through the transport pipe 12, and enter the compactor 13. That is, since all of the sucked air flows through the transport pipes 11 and 12 that transport the dust thrown into the dust chute pipe 1, the air flow rate does not decrease. Therefore, the transport capacity of waste will not decrease.

(2) Next, the effect of reducing negative pressure in the dust chute pipe 2 when dust is thrown into the dust chute pipe 2 will be explained.

There are two air inflow systems: air introduction pipes 9 and 10. The air flowing in from the air introduction pipe 9 is
The dust flows from the dust shunt pipe 1 to the trash receiving section 5a to the communication pipe 15 to the ventilation valve 14 to the dust shunt pipe 2 to the trash receiving section 5b to the crusher 6b to the connecting hopper 7b. Air flowing in from the air introduction pipe 10 enters the dust chute pipe 2 and passes through the air introduction pipe 9.
The air flow is divided into a flow that joins the air flow flowing in from the air flow, and a flow that descends through the transport pipe 11. The flow of the two systems described above is finally connected to the connection hopper 7b.
and flows into the transport pipe 12. The pressure within this dust chute pipe is lowest at the bottom of the pipe, and its value corresponds to the atmospheric pressure minus the sum of pressure losses in the air introduction pipe 10 and the transport pipe 11. That is, the negative pressure is at its maximum at the lower part of the dust chute pipe, and this negative pressure corresponds to the sum of the pressure losses described above. Pressure loss is proportional to the square of the air flow rate. In the device of the present invention, air is sucked not only from the air introduction pipe 10 but also from the air introduction pipe 9, so the flow rate of the air introduction pipe 10 and the transport pipe 11 is lower than when air is taken in from one place, i.e. , air introduction pipe 10
The pressure loss between the dust pipe and the transport pipe 11 is reduced, and therefore the negative pressure in the dust chute pipe 2 is reduced. Moreover, all the ventilation valves located below this dust shunt pipe are closed, that is, the ventilation valve 16 is closed. Therefore, a portion of the air flows of the two systems described above do not flow into the dust shunt pipe 3, and as described above, these air flows are combined into the transport pipe 12 and enter the compactor 13. That is, since all of the sucked air flows through the transport pipe 12 that transports the dust thrown into the dust chute pipe 2, the air flow rate does not decrease. Therefore, the transport capacity of waste will not decrease.

(3) Next, the effect of reducing the negative pressure of the dust chute pipe 3 when dust is thrown into the dust chute pipe 3 will be explained. All ventilation valves located above this dust chute are open,
That is, vent valves 14 and 16 are open.

There are two air inflow systems: air introduction pipes 9 and 10. The air flowing in from the air introduction pipe 9 is
Dust shunt pipe 1 → Garbage reception part 5a → Communication pipe 15 → Ventilation valve 14 → Dust shute pipe 2, dust reception part 5b → Communication pipe 17 → Ventilation valve 16 → Dust shunt pipe 3 → Garbage reception part 5c → Crushing machine 6c →
It flows to the connection hopper 7c. Air introduction pipe 10
The air flowing in from the air flow joins the air flow flowing in from the air introduction pipe 9 and the transport pipe 11,
12 into a descending flow. The above-mentioned two flow systems finally join together at the connecting hopper 7c and flow into the transport pipe 20. The pressure inside this dust chute pipe is lowest at the bottom of the pipe, and its value varies from atmospheric pressure to air introduction pipe 10 and transport pipe 1.
This corresponds to the value obtained by subtracting the sum of the pressure loss between 1 and the transport pipe 12. That is, the negative pressure is at its maximum at the lower part of the dust chute pipe, and this negative pressure corresponds to the sum of the pressure losses described above. Pressure loss is proportional to the square of the air flow rate. In the device of the present invention, air is sucked not only from the air introduction pipe 10 but also from the air introduction pipe 9, so the flow rate of the air introduction pipe 10, the transport pipe 11, and the transport pipe 12 is higher than that when air is taken in from one place. There will also be fewer
That is, the sum of the pressure losses of the air introduction pipe 10, the transport pipe 11, and the transport pipe 12 is reduced, and therefore the negative pressure in the dust chute pipe 3 is reduced. Since all of the sucked air flows through the transport pipe 20 that transports the dust thrown into the dust chute pipe 3, the air flow rate does not decrease. Therefore, the transport capacity of waste will not decrease.

Embodiment A preferred embodiment of the present invention will be described below with reference to the drawings.

In this example, there are three dust chute pipes 1, 2 and 3.
is used. The dust chute pipe is divided into three systems: the highest part dust chute pipe 1, the middle part dust chute pipe 2, and the lower part dust chute pipe 3, and a garbage receiving part 5 is installed at the bottom of each dust chute pipe.
a, 5b, 5c, crushers 6a, 6b, 6c, and connection hoppers 7a, 7b, 7c. The air introduction pipe 9 is connected to the top of the dust chute pipe 1 at the highest level. Air introduction pipe 10 is connected to connection hopper 7a. The transport pipe 11 connects the connecting hopper 7a and the connecting hopper 7b. The transport pipe 12 connects the connecting hopper 7b and the connecting hopper 7c. The transport pipe 20 connects the connecting hopper 7c and the compactor 13.

The dust receiving section 5a connected to the lower part of the dust shute pipe 1 and the top part of the dust chute pipe 2 are communicated with each other through a communication pipe 15 via a ventilation valve 14.

The dust receiving section 5b connected to the lower part of the dust shunt pipe 2 and the top of the dust chute pipe 3 are communicated with each other through a communication pipe 17 via a ventilation valve 16.

When introducing garbage into the high-rise system (dust chute pipe 1), both vent valves 14 and 16 are closed. Garbage inputted from the input port 4 attached to the side wall of the dust chute pipe 1 falls down the dust chute pipe 1, is stored in the dust receiving part 5a, is then crushed by the crusher 6a, and enters the transport pipe 11.
By driving the blower 8, the air introduced from the air introduction pipes 9 and 10 both enter the transport pipe 11, and the shredded waste is carried by this air to the transport pipe 1.
1, 12 and 20 to enter compactor 13.

When garbage is introduced into the middle layer system (dust chute pipe 2), the ventilation valve 14 is opened and the ventilation valve 16 is closed. Garbage inputted from the input port 4 attached to the side wall of the dust shute pipe 2 falls down the dust chute pipe 2, is temporarily stored in the dust receiving section 5b, is then crushed by the crusher 6b, and enters the transport pipe 12.
By driving the blower 8, the air introduced from the air introduction pipes 9 and 10 both enter the transport pipe 12, and the shredded waste is carried by this air to the transport pipe 1.
2 and enters compactor 13 through 20.

When introducing garbage into the lower level system (dust chute pipe 3), both vent valves 14 and 16 are opened. Garbage inputted from the input port 4 attached to the side wall of the dust chute pipe 3 falls down the dust chute pipe 3, is temporarily stored in the dust receiving part 5c, is then crushed by the crusher 6c, and enters the transport pipe 20.
By driving the blower 8, the air introduced from the air introduction pipes 9 and 10 both enters the transport pipe 20, and the crushed waste is carried by this air and passes through the transport pipe 2.
0 and enters the compactor 13.

Effects of the Invention According to the present invention, the negative pressure in a single dust pipe can be significantly reduced without providing a valve to the dust pipe, and therefore the door of the dust inlet of this dust pipe can be opened manually. Therefore, it is possible to easily throw dust into the dust chute pipe. Since the vent valves 14 and 16 may be much smaller than the valves provided in conventional dust discharge pipes, it is possible to economically reduce the negative pressure. Further, since no dust passes through the ventilation valves 14 and 16, problems such as clogging of the valves do not occur.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the apparatus of the present invention. 1, 2, 3... Dust chute pipe, 4... Inlet, 5a, 5b, 5c... Garbage receiving section, 6a, 6
b, 6c... Crusher, 7a, 7b, 7c... Connection hopper, 8... Blower, 9, 10... Air introduction pipe, 11, 12... Transport pipe, 13... Compactor, 14, 16... Ventilation valve, 15, 17... communication pipe.

Claims (1)

[Scope of Claims] 1. A vacuum transport device for waste comprising a transport pipe connected at one end to an air introduction pipe and connected to a blower at the other end, and a plurality of dust shute pipes connected to this transport pipe via a crusher, The top of the dust shute pipe in the highest layer is communicated with the outside air; the top of each of the other dust shute pipes and the lower part of the dust shute pipe located above and adjacent to this dust shute pipe are connected by a communication pipe through a ventilation valve. ;When transporting garbage, all the ventilation valves located below one dust chute pipe into which trash is input are closed, and all the ventilation valves located above the dust chute pipe are open. ;Garbage vacuum transport equipment.