JP2886777B2 - Garbage pneumatic transport equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic transport apparatus for sucking air inside a transport pipe and transporting refuse introduced into the transport pipe by an air flow.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a conventional pneumatic transportation apparatus for garbage is a pneumatic transportation pipe 1 installed horizontally underground.
The air suction device 2 is connected at one end to a dust collection device 5 and a dust collection device 6 via a dust collection device 6, and the other end is provided with an air intake port 3 having an on-off valve 4.

A plurality of refuse input pipes 8 which are opened and closed by discharge valves 7 are connected in the middle of the air transport pipe 1. Each of the refuse input pipes 8 penetrates vertically through a building A such as a building or a factory, and has on its surface a plurality of input ports 9 corresponding to each floor of the building A. And a dust compressor 10 for compressing and storing dust.

In this pneumatic transport device, the dust collected in the dust compressor 10 is dropped into the air transport pipe 1 by opening the discharge valve 7, the inside of the transport pipe 1 is sucked by the air suction device 2, and the dropped dust is removed. It is transported toward the trash collection device 5. In this case, the dust is sequentially sent to the downstream side by being hit by the pressure of the airflow generated inside the transport pipe 1 and the dust flowing from the upstream side.

[0005]

In the above-mentioned pneumatic transport apparatus, the degree of vacuum inside the transport pipe 1 is high and the wind speed is high on the downstream side near the air suction device 2, but the wind speed in the pipe increases as it goes upstream. And near the air inlet 3, the pressure becomes close to the atmospheric pressure. Actually, when the wind speed in the pipe of the transportation device is measured, the wind speed on the downstream side is 28 to 33 m / s.
ec, while the upstream wind speed is 22 to 2
5 m / sec, and an average value of about 30% decrease in wind speed was observed.

For this reason, heavy viscous dust easily accumulates on the upstream side of the transport pipe 1, and a phenomenon occurs that dust that has fallen below each discharge valve 7 remains for a long time as shown in FIG. In particular, at the most upstream discharge valve 7 near the air inlet 3, there is a problem that dust does not flow from the upstream and is not hit by the dust, so that the dust is fixed below the discharge valve and is greatly deposited. . However, cleaning the inside of the pipeline to remove such accumulation of dust takes a lot of trouble and time, and causes a reduction in the operation rate of the apparatus.

It is conceivable to solve the above problem by increasing the size of the air suction device 2 and increasing the wind speed in the pipeline. However, in order to eliminate the accumulation of dust, the capacity of the air suction device 2 must be reduced. Since it is necessary to greatly increase the cost, there is a problem that the equipment cost of the apparatus is greatly increased.

Accordingly, the present invention has been made to solve the above-mentioned problems, and to provide an air transport device capable of effectively utilizing an air flow in a pipeline to prevent accumulation of dust without increasing the size of an air suction device. It is an object.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an air intake port which is opened and closed by a valve at an end of a horizontal air transport pipe connected to an air suction device. In a garbage pneumatic transport apparatus in which a plurality of trash input pipes are connected through a discharge valve in the middle of a transport pipe, an airflow control valve that deflects an airflow in the pipe toward the bottom of the pipe is provided inside the air transport pipe, This is a garbage pneumatic transport device comprising a flexible valve element having the air flow control valve mounted on the upper surface of an air transport pipe and a pressing mechanism for pressing the valve element downward.

[0010]

In the above arrangement, an airflow control valve is provided on the air transport pipe upstream of a position where dust easily accumulates, and the airflow in the pipeline is deflected downward by the airflow control valve to blow the accumulated dust. As a result, a large pressure airflow acts on the dust and conveys the dust with a strong force.

In this case, since the air flow control valve is constituted by a flexible valve body and its pressing mechanism, the air flow control valve is provided at an arbitrary position of the air transport pipe. When the body protrudes from above to the inside of the pneumatic transport pipe and applies the airflow of the pressure to blow the dust, the valve body does not protrude into the pneumatic transport pipe when it does not operate.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a pneumatic transportation device according to an embodiment. The overall structure of this pneumatic transportation device is shown in FIG.
7 is the same as that of the conventional transport device shown in FIG. 7, and the same components are denoted by the same reference numerals and description thereof will be omitted.

The difference between the device of the embodiment and the conventional device is that
In the air transport pipe 1, a first airflow control valve 11 also serving as an on-off valve for air intake is provided upstream of the discharge valve 7a closest to the air intake 3, and upstream of each discharge valve 7b downstream from the discharge valve 7a. In that a second airflow control valve 21 is provided.

As shown in FIGS. 3 and 5, the first airflow control valve 11 has a disk-shaped valve body 13 which rotates vertically about a central shaft 12 as a fulcrum. A drive mechanism (not shown) for rotating the motor 13 is connected. The shape of the valve 13 is substantially the same as the inner diameter of the transport pipe 1. When the valve 13 rises as shown by a chain line in FIG. 3, the inside of the transport pipe 1 is closed. Incidentally, reference numeral 14 in the figure denotes a sealing material provided on the inner periphery of the transport pipe 1.

In the first airflow control valve 11, when the valve body 13 rotates so as to incline downward toward the downstream side as shown by the solid line in FIG. 3, the airflow in the transport pipe 1 is directed toward the bottom of the pipe. And is controlled to flow along its bottom surface.
Also, when the amount of rotation of the valve 13 changes, the amount of air taken in changes accordingly, and when the valve 13 rises as shown by the dashed line in FIG. Intake stops.

On the other hand, as shown in FIGS. 4 and 5, the second airflow control valve 21 is a valve body 2 mounted on the upper surface of the transport pipe 1.
2 and a pressing mechanism 23 for pressing the valve body 22 from the back side
It is composed of The valve body 22 is formed by fixing a peripheral portion of a flexible film material such as a rubber film to the transport pipe 1, and elastically deforms so that a central portion thereof is pushed into the transport pipe 1.

The pressing mechanism 23 comprises a pressing rod 24 connected to the center of the back of the valve body 22 and a cylinder 25 for moving the pressing rod 24 up and down. Transform the curve. In the second airflow control valve 21, as shown in FIG. 4, when the valve element 22 is deformed toward the inside of the transport pipe 1, the cross-sectional area of the pipe is reduced, and the airflow is guided by the deformed valve element 22 surface. Deflected downward.

The drive mechanism of the first airflow control valve 11 and the pressing mechanism 23 of the second airflow control valve 21 are provided with each exhaust valve 7.
It is connected to a control device (not shown) for controlling the opening and closing of the valves a and 7b, and is controlled so that when the discharge valves 7a and 7b are opened, the control valves 11 and 21 are operated in conjunction therewith.

In this control, each control valve 11, 21 is mechanically connected to each of the discharge valves 7a, 7b, and a timer is used to control each control valve at a required time after the discharge valves 7a, 7b are opened. Depending on the method of operating the valves 11, 21 or depending on the type of dust, the control valves 11, 21
Any of the methods for operating 21 can be employed.

The pneumatic transport device of the embodiment has the above-described configuration, and its operation is as follows. When operating the dust injection pipe 8 on the upstream side, as shown in FIG.
The first valve body 13 is raised to shut off the intake of air into the transport pipe 1. Then, as shown in FIG. 5 (a), when the discharge valve 7a on the uppermost stream side is opened and dust falls from the dust injection pipe 8 into the transport pipe 1, the first airflow control valve 11 rotates in conjunction therewith. Then, the flow of the air flowing from the air inlet 3 is deflected downward. Thereby, the airflow in the pipe is concentrated on the bottom of the pipe, and the dust is conveyed with a strong force. Therefore, the accumulation of the dust below the discharge valve 7a is prevented.

When the second dust inlet pipe 8 is operated, as shown in FIG. 5B, when the downstream discharge valve 7b is opened, the second air flow control valve 21 is operated in conjunction with the opening. , The valve body 22 bends inside the tube. For this reason, the airflow in the pipe is deflected downward and concentrated on dust on the bottom of the pipe, thereby preventing accumulation of dust.

In the above-described embodiment, the first airflow control valve 11 is also used as an opening / closing valve for the air intake 3. However, separately from the control valve 11, the first airflow control valve 11 operates independently of the air intake 3. A valve may be provided, and a second airflow control valve 21 may be provided on the most upstream side of the transport pipe 1 instead of the first airflow control valve 11. Further, it is effective to provide the second airflow control valve 21 near each discharge valve 7b. However, the second airflow control valve 21 may be provided in a case where dust inside the pipeline easily accumulates.

[0023]

As described above, according to the present invention, since the airflow control valve is constituted by the flexible valve body and the pressing mechanism thereof, the airflow control valve is provided on the upstream side of the position where dust easily accumulates inside the air transport pipe. Since the air flow inside the air transport pipe is concentrated on the bottom of the pipe by the air flow control valve, dust in the pipe can be transported with a strong force, and the accumulation of dust can be prevented.

Further, since the air flow in the pipeline is concentrated and used effectively, the size of the air suction device can be reduced, and there is an advantage that the equipment cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing the overall structure of a pneumatic transportation device according to an embodiment.

FIG. 2 is a partially cutaway view of a main part of the above.

FIG. 3 is a sectional view showing a first airflow control valve according to the first embodiment;

FIG. 4 is a sectional view showing a second airflow control valve of the above.

5 (a) and 5 (b) are partially broken sectional views showing the operation of the embodiment.

FIG. 6 is a diagram showing a conventional pneumatic transportation device.

FIG. 7 is a partially broken sectional view of a main part of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pneumatic transport pipe 2 Air suction machine 3 Air inlet 7, 7a, 7b Discharge valve 8 Dust input pipe 11 First air flow control valve 12 Shaft 13 Valve element 21 Second air flow control valve 22 Valve element 23 Pressing mechanism 24 Press rod 25 Cylinder

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-190113 (JP, A) JP-A-54-8383 (JP, A) JP-A-5-201538 (JP, A) JP-A-1- 220638 (JP, A) Fully open sho 61-49706 (JP, U) Fully open sho 60-130207 (JP, U) Fully open 4-91935 (JP, U) Fully open sho 61-49707 (JP, U) Shokai 61-49708 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65F 5/00 101 B65G 53/24 B65G 53/16

Claims (3)

(57) [Claims] 1. A air intake which is opened and closed by a valve on the end of a horizontal air transport pipe connecting the suction unit of the air provided, a plurality of refuse feeding pipe through the exhaust-off valve in the middle of the air transport tube in the air transport device trash connected to, providing an airflow control valve for deflecting the air flow in the tube in the interior of the air transport tube towards the bottom of the tube, attached to the airflow control valve to the upper surface of the air transport tube
Flexible valve body and a pusher for pushing the valve body downward.
A pneumatic transportation device for garbage, comprising a pressure mechanism . 2. The airflow control on the most upstream side of the airflow control valve.
The control valve is a plate-shaped valve that rotates vertically inside the air transport pipe, and the air flow control valve moves the air transport pipe upright.
Closed and also served as an open / close valve for the air intake.
The pneumatic transportation device for garbage according to claim 1, wherein: 3. The air transport device for refuse according to claim 1, wherein the operation of the air flow control valve is linked to the opening and closing movement of a discharge valve.