JPS59198222A - Pneumatic transport apparatus - Google Patents

Abstract

PURPOSE:To enable smooth transport by connecting a distribution conveyer to a discharge port of a separator and disposing a plurality of storing and discharging machines. CONSTITUTION:A separator 8 is connected to a pipeline for pneumatic transport of a solid, and a plurality of storing and discharging machines 12a, 12b are disposed corresponding to a plurality of discharge ports 16a, 16b of a distribution conveyer 15 connected to a solid discharge port 81 of the separator through pipelines. Intercepting valves 18a, 18b are disposed respectively in pipelines connecting the storing and discharging machines 12a and 12b. In this arrangement, a solid can be smoothly transported from a throwing-in station to a collecting station, and each speed of discharging the solid from the storing and discharging machines at the collecting station is made equal.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pneumatic transportation device for solid materials such as garbage and powder, and in particular, a plurality of storage and discharge devices are connected to a separator that separates garbage, etc. transported by an airflow from the airflow. This article relates to pneumatic transportation equipment.

In general, pneumatic transportation systems for solid materials such as garbage and powder and granules connect input stations installed at multiple locations to a central collection station via pipes, and transport the waste from each input station via the pipes. It uses airflow to transport garbage and powder to the collection station. To describe this outline with reference to FIG. 1, a large number of input stations 1a11b and 1C installed at desired positions and a collection station 2 that collects solids in one place are connected to pipe lines 3 that are branched from each other.
will be contacted by. The charging stations 1a, lb, and 1c basically consist of a solids input port, a storage tank, and a discharge valve.For example, in the charging station 1a, a plurality of solids input ports 5 are provided in the charging chute 4.
Furthermore, the lower end of the input chute 4 is connected to one end of a rotating drum 6 for temporarily storing solids, and the rotating drum 6 is further connected to the pipe line 3 via a discharge valve 7.

Another loading station 1b11c is loading station 4.
It is often used when there is no room to install a storage tank that occupies a large space like the rotating drum 6. Furthermore, the collection station 2 is connected to one end of a pipe line 3 through which the solids are transported, to a separator 8 such as a cyclone or a bag filter, and a feeder 8 for suctioning air. A dust removal device 11 is installed in a pipe 10 that connects the blower 9 and the separator 8 to remove solids contained in the air flowing into the iA machine 9 and the Jl1 machine 9, and a dust removal device 11 is installed in the pipe 10 that connects the blower 9 and the separator 8 to remove the solid content from the airflow with the separation v18. It consists of a storage and discharge vIA 12 that receives the separated solids and discharges them at an appropriate time. The pipe line 3 for transporting solids is branched at an appropriate position to rationally connect all input stations 1a, 1b11C and the collection station 2, and the upstream part thereof has an intake valve 13 or a shutoff valve. A valve 14 is provided. When collecting the solids stored in the input station 1a11b11C to the collection station 2, first start the air blower 11!9, open the intake valve 13 or the cutoff valve 14, and generate an airflow at a predetermined speed in the pipe line 3. After that, the discharge valve 7 is opened and the solids stored in the input station are supplied into the pipe line 3 and transported to the separator 8 by the air flow. When the transportation of the solids from one loading station is completed, the discharge valves of the other loading stations are sequentially opened and the stored solids are transported. In general, if
It takes some time after starting a9 to open the discharge valve 7 of the input station, so in order to operate efficiently, all the It is operated to collect solids stored in the input station into a collection station.

However, the amount of solids generated is not always constant, and therefore the storage capacity of the collection station's storage/discharge machine 12 may reach its limit before the solids stored at all input stations are transported. There is. In this case, the solids stored in the storage/discharge machine 12 are discharged, and then collection is restarted again, but it is desirable to discharge the solids in the storage/discharge machine 12 as quickly as possible.

However, in a system in which a conveyance process such as a belt conveyor or a solid matter separation device is attached as a process after the storage and discharger 12, if the discharge speed of the storage and discharger 12 increases, the conveyance speed will increase accordingly. Separation processing 3i! As a result, the equipment that comprised them had to be made larger as well.

In a conventional pneumatic transportation system, the device disclosed in Japanese Patent Application Laid-open No. 165605 is known as a device for stabilizing the amount of solids discharged from the storage and discharge machine at the collection station, but the equipment There was a problem that became a clue.

The present invention solves the above-mentioned conventional problems, smoothly transports solids from a solids input station to a collection station, and averages the discharge speed of solids from a storage discharger at the collection station. It is an object of the present invention to provide a pneumatic transportation device that reduces the throughput of various equipment in the process subsequent to the storage and discharge machine, and also makes these equipment smaller and cheaper.

The present invention is directed to a pipe for pneumatic transportation of solids.
1tl, a distribution conveyor connected to the solids discharge port of the nuclear power 1IIIa, a plurality of storage and discharge machines provided via pipes corresponding to the plurality of discharge ports of the distribution conveyor, and the distribution conveyor. This pneumatic transportation device is equipped with a shutoff valve provided in a pipe line connecting the storage and discharge machine. The pneumatic transport device of the present invention can be applied to both suction-type and pressure-feeding pneumatic transport systems.

First, an embodiment of the present invention will be described with reference to the drawings. Fig. 2 shows an embodiment of the present invention, in which solid matter such as garbage and powder is transported by airflow in the pipe 3, and the input station 1a11b, 1c is sent to the separator 8. In the separator 8, solids are separated from the air stream by any solid/gas separation means such as a cyclone or a bag filter, and the separated solids are supplied to the subsequent distribution conveyor 15 from a lower discharge port 8'. The distribution conveyor 15 has a built-in screw 15' that can rotate in reverse, and can arbitrarily convey the solids supplied from the separator 8 to the left and right, and the motor that drives the screw 15' is not shown in the figure. Not yet. Discharge ports 16a116b are provided at both ends of the distribution conveyor 15, and further discharge ports 16a,
Expansion 17a and 17b are connected to 16b. These expansions 17a and 17b suppress the propagation of vibrations between the distribution conveyor 14 side and the storage/discharge, *i 2a and i2b sides. Then, from the expansions 17a and 17b, the shutoff valves 18a and 18
b, pipe lines 19a and 19b, and rotating drum type storage and discharge 11t12a and 12b are connected. Therefore, if the screw 15' of the distribution conveyor 15 conveys the solids in the six directions of the arrows, the solids separated by the separator 8 will be stored in the storage discharge 1fi12a on the right side, If solids are transported in the opposite direction,
The solid matter will be stored in the storage discharge 1112b on the left side. Furthermore, communication pipes 20a and 2ob are used to equalize the pressures on the upstream and downstream sides of the cutoff valves 18a and 18b, and valves 21a and 2 that can open and close the communication pipes 20a and 20b as desired.
1b is provided. Further, the valves 22a and 22b are used to equalize the pressure inside the storage and discharge machines 12a and 1'2b to one atmospheric pressure.

Next, the operation of the pneumatic transport device shown in Fig. 2 will be explained.
The blower 9 is operated and the loading stations Ia, 1b, 1
Solids are sequentially introduced into pipe 3 starting from c, and separated by air flow.
Transport to ll1 aircraft 8. The solids separated by the separator 8 are supplied falling to the distribution conveyor 15 from a discharge port 8- provided at the bottom of the separator 8. On the distribution conveyor 15,
First, the screw 15' transports the solids in the direction of arrow A, and the solids pass through the discharge port 16a1, the expansion 17a1, the shutoff valve 18a, and the conduit 19a, and are stored in the storage/discharge machine 12a.

In this case, the valve 2'2a and the discharge valve 23a of the storage JJ+ outlet 12a are closed, and the cutoff valve 18a is open. Furthermore, the left-side connection valve 181), the valves 21b, 22b, and the discharge valve 23b may be set so that the inside of the distribution conveyor 15 does not communicate with the atmosphere. and discharge valve 23b
It is desirable to close the valve and wait with the shutoff valve 18b open.

When the storage amount of the storage discharge 1112a reaches its limit, a detector (not shown) detects this, and the rotation of the screw 15' is reversed, and the solids are conveyed in the opposite direction to the arrow A, and 1 ml of storage and discharge is similarly carried out.
It is stored in 2b. Then, close the right shutoff valve 18a, confirm that the valve 21a is closed, and then close the valve 21a.
a is closed, the pressure inside the storage and discharge machine 12a is brought to atmospheric pressure, and the discharge valve 23a is opened to discharge the solid matter stored in the storage and discharge machine 12a. During this operation of discharging solids from the storage discharge t112a, the screw 1 of the distribution conveyor 15
5' is conveying the solids to the other storage discharger 12b, so that the collection operation from the input station is continued.

When the discharge operation of the storage discharge 1a12a is completed, the discharge valve 23a and the valve 22a are closed, the valve 21a is opened, and the atmospheric pressure inside the storage discharge machine 12a is gradually released to reduce the pressure difference before and after the cutoff valve 18a. , then open the shutoff valve 18a, and then close the valve 21a to facilitate the next switching operation.

On the other hand, the storage discharge + which stores the collected solids! 1
If the storage capacity of 12b reaches its limit, screw 1 in the same way.
5' is reversely rotated to store the solids in the storage/discharge machine 12a,
A discharge operation is performed for the storage and discharge machine 12b that has reached its storage limit.

Thus, the pneumatic conveyance device of the present invention has a distribution conveyor 15
By operating the shutoff valves 18a and 18b, the solids can be stored for the desired storage and discharge Ill 2a and 12b, and furthermore, in the storage and discharge machine other than the storage and discharge machine where solids are being stored, the shutoff valves are activated at the same time. It can be closed and the accumulated solids can be discharged.

Note that the communication pipes 20a and 20b are not necessarily essential, but when the cutoff valves 18a and 18b are opened, the communication pipes 20a and 20b are
If the air pressures before and after a and 18b are equalized, the shutoff valve 18
This is provided because the opening operation of the openings a and 18b can be performed more easily. The connection between the communication pipes 20a and 20b is not necessarily limited to that shown in FIG.
The upstream sides of 8a and 18b can be unified into one pipe, and the connection position thereof can also be the separator 8.

The valves 22a and 22b are connected to the storage discharger 12a112b.
.

Accordingly, the connections must be provided in each case, but the connections in that case are not limited to those shown in FIG.
Any pressure can be used as long as it can bring the pressure inside 2a, 12b to atmospheric pressure, and as a result, the opening operation of the discharge valves 23a, 23b can be performed very easily.

FIG. 3 shows the main part of the embodiment of the present invention, showing the storage discharge va
This is an example in which four 12a to 12d are provided. In FIG. 3, the storage and discharge I112a to 12d are driven by motors 24a to 24, respectively.
It is rotated by the chains 25a to 25d driven by the storage and discharge Ill 2a to 1.
2d is rotatably supported by rollers 26. 27 is a discharge valve 2 for four storage discharges 1112a to 12d.
This is a belt conveyor provided below 38 to 23d, which conveys the solids to subsequent processes such as a separator and a crusher (not shown). In addition, 28a to 28d are discharge and protrusion pieces 2
It is a fulcrum when opening and closing 3a to 23d, and is supported by a fixed arm (not shown).

In addition, in FIG. 3, the communication pipes 2Qa, 20bt)' and valves 2Ia, 21 of FIG.
b, 22a, and 122b are not provided, but they can be provided if necessary.

As described above, the pneumatic transportation device of the present invention includes a separator connected to a pipeline for pneumatic transportation of solids, a distribution conveyor connected to the solids discharge port of the separator, and a plurality of distribution conveyors. A storage discharger is provided via a pipe line in correspondence with the discharge port of the distribution conveyor V, and a shutoff valve is provided in the pipe line connecting the storage discharger and the discharge port of the distribution conveyor V. be.

In the pneumatic conveyance device of the present invention, the solids such as garbage and powder separated by the separator are stored in any storage and discharge machine by the distribution conveyor, and also in other storage and discharge machines that are not performing storage operation. At the same time, a shutoff valve installed in the pipe connecting between the storage discharger and the distribution conveyor allows the il! Since the solids stored inside can be discharged in a state where the amount of solids stored in With proper operation, it is possible to guide the system to another storage/discharge machine with sufficient storage capacity, and there is no need to stop the solids collection operation when switching operations, making extremely efficient collection of solids possible. Furthermore, the speed of discharging solids from the storage and discharge machine is not very fast because it can be stored in other storage and discharge machines during the discharge operation.
Therefore, from the storage/discharge machine to the subsequent conveyor, sorter,
This has the effect of reducing the processing capacity of various equipment such as a crusher.

Furthermore, in the air transport device of the present invention, if a communication means before and after the above-mentioned cutoff valve or a valve for communicating with the atmosphere is provided, the operation of the cutoff valve and the discharge valve of the storage discharger can be easily operated. .

Furthermore, according to the present invention, a desired number of storage and discharge machines can be installed simply by extending the distribution conveyor, and if the distribution conveyor is extended horizontally, the storage capacity can be increased without increasing the height of the device. becomes possible.

In other words, since the height of the apparatus including the separator is not increased unnecessarily, there is an advantage that the strength of the pedestal etc. can be easily increased.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional pneumatic transportation system, FIG. 2 is a diagram showing an embodiment of the present invention, and FIG. 3 is a diagram showing essential parts of another embodiment of the present invention. 1a, 1b11c...Input station 2...Collection station 3...Pipe line 4...Input chute 5...Input port 6...Rotating drum 7...
・Discharge valve 8...Separator 8'...Solid discharge port 11...Dust removal device 12.12a, 12b1
12c112d... Storage discharger 13... Intake valve 14... Shutoff valve 15... Distribution conveyor 15'
...Suf IJ 1u 18a, 18b. 180.18d ... Connection valve patent applicant Ebara Corporation

Claims (1)

[Claims] 111 liters connected to a pipe line for pneumatic transportation of solids, a distribution conveyor connected to a solids discharge port of the separator, and a plurality of pipes corresponding to the plurality of discharge ports of the distribution conveyor. A pneumatic transport device comprising: a plurality of storage and discharge machines provided; and a shutoff valve provided in a conduit connecting the distribution conveyor and the storage and discharge machines.