JPH10245124A - Pneumatic conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent blocking-up of a sending-out port and a transport pipe by slidingly moving a seal conveyor, and reducing travel speed of a carrier belt so as to reduce the communicating area of the sending-out port of a casing when a quantity of refuse thrown inside from a hopper of the casing is much. SOLUTION: When a quantity of refuse 10 thrown inside from a hopper 11a of a casing 11 is much, a shortening quantity of a driving cylinder of a seal conveyor 15 is reduced, and the communicating area of the hopper 11a side of a sending-out port 11b of the casing 11 and the crusher 12 side is reduced. At the same time, rotating speed of a motor is reduced, and travel speed of a carrier belt is reduced, and a quantity of the refuse 10 sent and supplied to a crusher 12 is kept constant. In this way, even when a quantity of the throwing-in refuse 10 is much, a fixed quantity of the refuse 10 is always sent and supplied to a transport pipe 1 while crushing it, and is reliably transported without clogging the refuse 10 at sending supplying time to the transport pipe 1 and in the transport pipe 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic conveying apparatus for pneumatically transporting light refuse such as paper, cloth, plastic film and the like.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional pneumatic conveying apparatus for pneumatically transporting lightweight refuse such as paper, cloth, plastic film and the like.

As shown in FIG. 7, an outlet 2b of a rotary drum 2 having an inlet 2a is connected to one end of the transport pipe 1 near an air inlet 1a. As shown in FIG. 8, a shut-off valve 3 is provided at the outlet 2b of the rotary drum 2 to open and close the outlet 2b by moving the valve body 3a by expansion and contraction of the cylinder 3b. As shown in FIG. 7, the other end of the transport pipe 1 is connected to the upper side of the side wall of the refuse separator 4. A waste compressor 5 is connected to a lower end of the waste separator 4. Above the refuse separator 4, a dust remover 6 is connected via a connection pipe 6a. The suction port of a blower (vacuum blower) 7 is connected to the dust remover 6. A deodorizing device 8 is connected to the outlet of the blower 7. FIG.
Among them, 9 is a container.

In such a conventional pneumatic conveying apparatus, the blower 7 is operated to take in air from the air inlet 1a of the transport pipe 1 and to throw the refuse from the inlet 2a of the rotating drum 2 so that the rotary drum 2 Is rotated to send the dust to the outlet 2b, and the cylinder 3b of the shut-off valve 3 is operated to open the valve body 3a.
After being circulated through the inside and conveyed into the refuse separator 4, dropped in the refuse separator 4 by its own weight, sent into the refuse compressor 5 and compressed, then put into the container 9 and carried out, The air that has flowed into the garbage separator 4 flows into the dust remover 6 to be dust-removed, and then discharged to the outside via the deodorizer 9.

[0005]

In the conventional pneumatic conveying apparatus as described above, when a large amount of dust is thrown into the rotary drum 2, the dust is uniformly fed into the outlet 2b of the rotary drum 2. As a result, there is a case where the dust is deposited and compressed on the valve element 3a of the shut-off valve 3 to form a block, thereby blocking the delivery port 2b and the transport pipe 1.

[0006]

According to a first aspect of the present invention, there is provided an air conveying apparatus for circulating air through a transport pipe to convey refuse together with the air. A hopper into which the feeding pipe is inserted is provided at an upper portion, and a casing having a delivery port communicating with the transport pipe at a lower portion, and inside the casing so that the hopper side and the delivery port side in the casing can be communicated or shielded. A seal conveyor provided so as to be slidable and capable of adjusting the speed of the conveyor belt; and a crushing means provided at the outlet of the casing to crush the dust.

In the above-mentioned air conveying device, when the sealer conveys the hopper side and the discharge port side in the casing so as to communicate with the seal conveyor so as to communicate with the seal conveyor, the debris is stored therein. A storage tank having a discharge port that can be opened and closed at a lower portion, and return means for re-feeding the refuse discharged from the discharge port of the storage tank from the hopper of the casing into the inside of the casing. It is characterized by becoming.

[0008] In the above-described pneumatic conveying apparatus, a plurality of the outlets of the casing are provided, and the seal conveyor and the crushing means are provided for each of the outlets.

In the above-described air conveying device, the side seal for blocking air flowing through a gap between the casing and the side of the seal conveyor when the hopper side and the delivery port side in the casing communicate with each other is replaced with the seal. It is characterized by being provided on a conveyor.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an air conveying device according to the present invention will be described with reference to FIGS. In addition,
FIG. 1 is a schematic structural view of the main part, and FIG. 2 is an arrow II in FIG.
FIG. 3 is a sectional view taken along line III-III of FIG.

As shown in FIG. 1, one side and the other side of a lower part of a casing 11 having a hopper 11a on an upper side are provided.
Delivery outlets 11b and 11c are provided. Casing 1
The first outlet 11b is connected to the transport pipe 1 via a crusher 12 as crushing means. Outlet 1 of casing 11
1c is connected to the upper part of the storage tank 13 having the openable and closable discharge port 13a at the lower part. A return conveyor 14 is provided below the storage tank 13 as return means for communicating with the hopper 11a of the casing 11.

On the other hand, inside the casing 11, the hopper 11a side of the casing 11 and the delivery port 11b
The outlet 11b,
Seal conveyor 1 that can slide along 11c
5 are provided, and the seal conveyor 15 has a structure as shown in FIGS.

2 and 3, 15a is a seal frame, 15b and 15c are seal materials, 15d is a support frame, 15e is a bearing, 15f is a roller, 15g is a transport belt, 15h is a pulley, 15i is a motor, and 15j is a drive. The belt, 15k, is a drive cylinder.

The seal frame 15a is
Is attached to the casing 11 so as to communicate between the outlets 11b and 11c. The sealing material 15b is made of a material having elasticity and low frictional resistance such as rubber or soft resin, and is lined above and below the inside of the sealing frame 15a. The sealing material 15c is
It is made of the same material as the sealing material 15b, and is attached to the end face on the side of the outlet 11b of the casing 11 inside the sealing frame 15a.

The support frame 15d is oriented in a longitudinal direction in a direction connecting the outlets 11b and 11c of the casing 11, and forms a pair in a horizontal direction orthogonal to the direction connecting the outlets 11b and 11c. Seal frame 15
a. The bearing 15e is supported by the support frame 15d so as to face between the pair of support frames 15d.
A plurality of them are provided at predetermined intervals along the longitudinal direction of d. The roller 15f is a pair of support frames 15
d, a plurality of bearings 1 arranged at a predetermined interval and facing each other.
The end is supported at 5e. The conveyor belt 15g is wound around the rollers 15f so as to communicate between the rollers 15f, and the gap with the seal material 15b is very small (1 mm or less).

The pulley 15h is coaxially connected to one bearing 15e of the casing 11 near the outlet 11c. The motor 15i is of an inverter type that can rotate forward and reverse and adjust the speed.
5d, the drive shaft of which is the drive belt 15
It communicates with the pulley 15h via j. The drive cylinders 15k are disposed near the pair of support frames 15d, respectively, and the base ends thereof are the outlets 11c of the casing 11.
The ends are connected rotatably toward the outlet 11b of the casing 11 of the support frame 15d in the vicinity, while being rotatably connected to each other.

That is, when the drive cylinder 15k is extended, the support frame 15d moves to the side of the outlet 11b of the casing 11 so that the conveyor belt 1 moves.
The side portion of 5 g closely adheres to the sealing material 15 c, and shields the outlet 11 b of the casing 11 so as to partition the outlet 11 b into the hopper 11 a and the crusher 12, and the storage tank 13 through the outlet 11 c of the casing 11. On the other hand, when the drive cylinder 15k is shortened, the support frame 15d moves closer to the outlet 11b of the casing 11, and a space is formed between the sealing member 15c and the portion of the conveyor belt 15g on the outlet 11b side of the casing 11. Formed and casing 1
The hopper 11a side of the first outlet 11b communicates with the crusher 12 side.

In such a pneumatic transportation device, the drive cylinder 15k of the seal conveyor 15 is extended to extend the casing 1
After sealing the delivery port 11b as described above, light garbage 10 such as paper, cloth, plastic film, or the like is put into the casing 11 from the hopper 11a, and a predetermined amount of garbage is placed on the seal conveyor 15. When 10 is deposited,
The drive cylinder 15k of the seal conveyor 15 is shortened by a predetermined length to make the hopper 11a side of the outlet 11b of the casing 11 communicate with the crusher 12 side with a predetermined size, and the motor 15i is rotated forward at a predetermined speed, When the conveyor belt 15g is run at a predetermined speed via the rollers 15f, the dust 10 is fed to the crusher 12 by a predetermined amount and crushed, then sent to the transport pipe 1 and transported together with air.

Here, when the amount of dust 10 introduced into the casing 11 from the hopper 11a is small, the shortening amount of the drive cylinder 15k of the seal conveyor 15 is further increased to increase the amount of the hopper 11 at the outlet 11b of the casing 11. 1
1a side and the crusher 12 side are further increased, and the rotation speed of the motor 15i is increased to increase the traveling speed of the conveyor belt 15g.
When the amount of dust 10 introduced into the inside of the casing 1a is large, the shortening amount of the drive cylinder 15k of the seal conveyor 15 is reduced and the hopper 1 of the outlet 11b of the casing 11 is reduced.
1a side and the crusher 12 side are reduced, and the rotation speed of the motor
By reducing the traveling speed of g, the amount of the refuse 10 fed to the crusher 12 can be kept constant.

When the amount of dust 10 introduced into the casing 11 from the hopper 11a is extremely large,
After extending the drive cylinder 15k of the seal conveyor 15 to shield the outlet 11b of the casing 11, the motor 15
i is reversed so that the conveyor belt 15g travels in the reverse direction, so that a large amount of refuse 10 deposited on the seal conveyor 15 is fed to the storage tank 13a, and the casing 11 is moved by the return conveyor 14 traveling at a predetermined speed. By re-injecting the refuse 10 into the hopper 11a in a fixed amount, the refuse 10 can be supplied to the crusher 12 in a fixed amount in the same manner as described above.

Therefore, according to such a pneumatic transport device, a fixed amount of refuse 10 can be constantly fed to the transport pipe 1 while being crushed without being influenced by the amount of refuse 10 to be charged. The refuse 10 can be reliably transported without clogging the refuse 10 during the feeding to the transport pipe 1 or in the transport pipe 1.

In this embodiment, when the refuse 10 on the seal conveyor 15 is fed to the crusher 12,
The conveyor belt 15g was run.
Depending on the charging amount of the air and the communication area of the outlet 11b of the casing 11, the suction force of the air flowing through the transport pipe 1 allows the dust 1 to travel without running the transport belt 15g.
Zero can also be sent.

In the present embodiment, the drive cylinder 15k is provided on each of the pair of support frames 15d. However, depending on the conditions, only the drive cylinder 15k may be provided only on one of the support frames 15d. Various types such as hydraulic pressure and pneumatic pressure can be applied to the cylinder 15k.

A second embodiment of the air conveying device according to the present invention will be described with reference to FIGS. In addition, FIG.
FIG. 5 is an extracted enlarged view of a portion indicated by an arrow V in FIG. 4, and FIG. 6 is a sectional view taken along the line VI-VI in FIG.
However, the same parts as those in the above-described first embodiment are denoted by the same reference numerals as those in the above-described first embodiment, and description thereof will be omitted.

As shown in FIG. 4, a plurality of transport conveyors 26 are provided outside the casing 21 having the hopper 21a at the top thereof, and the conveyors 26 communicate with the hopper 21a. Outlets 21b and 21c are provided in the lower part of the casing 21 at one side and the other side. The outlets 21b and 21c of the casing 21 are connected to the transport pipe 1 via a crusher 12 as crushing means. Casing 2
A seal conveyor 25 is provided at each of the upper end portions of the outlets 21b and 21c in the sealer 1, and the seal conveyor 25 has a structure as shown in FIGS.

5 and 6, 25a is a seal frame, 25b and 25c are seal materials, 25d is a support frame, 25e is a bearing, 25f is a roller, 25g is a belt,
25h is a pulley, 25i is a motor, 25j is a drive belt, 25k is a drive cylinder, and 25m is a side seal.

The side seal 25m is made of a material having elasticity and low frictional resistance, such as rubber or soft resin, and separates one end and the other end of the seal frame 25a between the pair of support frames 25d. 25g belt
Are provided between the upper and lower sides of the upper side.

That is, in this embodiment, the casing 2
A plurality of outlets 21b and 21c are provided, a seal conveyor 25 and a crusher 12 are provided for each of them, and side seals 25m are provided on these seal conveyors 25.

For this reason, the hopper 21a of the casing 21
In accordance with the amount of the refuse 10 to be thrown into the motor 25, the expansion and contraction operation of the drive cylinder 25k and the motor 25
i The direction of rotation and adjustment of rotation speed of i
By carrying out each of b and 21c, the amount of waste 10 to the transport pipe 1 can always be kept uniform, and the outlets 21b,
At the time of communication between the casing 21 and the seal conveyor 25,
Can be shut off the air flowing through the gap with the side.

Therefore, it is possible to obtain the same effects as those of the above-described embodiment, as well as the transport pipe 1.
Since the seal conveyor 25 and the crusher 12 are provided at the plurality of outlets 21b and 21c communicating with the refuse, the refuse 10 can be crushed more efficiently and transported than in the above-described embodiment. In addition, since the seal conveyor 25 is provided with the side seal 25m, it is possible to suppress the leakage of air from the side surface as compared with the above-described embodiment, and it is possible to suppress a decrease in the transport force in the transport pipe 1.

[0031]

In the pneumatic conveying apparatus according to the present invention, a casing having a hopper into which the refuse is charged at an upper portion, and a discharge port communicating with the transport pipe at a lower portion, the hopper side in the casing, A seal conveyor slidably provided in the casing so as to be able to communicate with or shield the delivery port side and capable of adjusting the speed of the conveyor belt; and a crusher provided at the delivery port portion of the casing to crush the refuse. Means, when the amount of dust introduced into the inside from the hopper of the casing is small, the seal conveyor is slid so as to increase the communication area of the outlet of the casing and the traveling of the conveyor belt. If the speed is increased and a large amount of refuse is introduced into the casing from the casing hopper, the area of the casing By sliding the seal conveyor to reduce the running speed of the conveyor belt and keeping the amount of refuse sent to the transport pipe constant, it depends on the amount of refuse input. A constant amount of refuse can be constantly sent to the transport pipe while being crushed, and the refuse can be transported reliably without clogging the refuse during the supply to the transport pipe or in the transport pipe.

Also, when the seal hopper blocks the hopper side and the delivery port side in the casing, the seal communicates with the casing so as to communicate with the seal conveyor, and the refuse can be stored therein and can be freely opened and closed. A storage tank having a discharge port at the bottom thereof, and return means for re-entering the refuse discharged from the discharge port of the storage tank from the hopper of the casing into the interior of the casing. If the amount of refuse introduced into the inside is extremely large, the outlet of the casing is shielded by a seal conveyor, and a large amount of refuse accumulated on the seal conveyor is sent to the storage tank. If the garbage is re-injected into the hopper by a predetermined amount, the refuse can be supplied to the crusher 12 by a predetermined amount in the same manner as above. In, it is a large amount of dust be put into Ippen, reliably transported without clogging dust in feed way and transport pipe to transport pipe.

Further, by providing a plurality of the outlets of the casing and providing the seal conveyor and the crushing means for each of the outlets, the above-described transport processing can be performed more efficiently.

Further, the seal conveyor is provided with a side seal for blocking air flowing through a gap between the casing and the side of the seal conveyor when the hopper side and the delivery port side in the casing communicate with each other. In addition, it is possible to suppress a decrease in the transport power in the transport pipe.

[Brief description of the drawings]

FIG. 1 is a schematic structural view of a main part of a first embodiment of an air conveyance device according to the present invention.

FIG. 2 is an enlarged enlarged view of an arrow II in FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a schematic structural view of a main part of a second embodiment of the air conveyance device according to the present invention.

FIG. 5 is an enlarged enlarged view of an arrow V portion in FIG. 4;

6 is a sectional view taken along the line VI-VI in FIG.

FIG. 7 is an overall schematic configuration diagram of a conventional pneumatic transportation device.

FIG. 8 is an explanatory diagram of an internal structure of a portion indicated by an arrow VIII in FIG. 7;

[Explanation of symbols]

 Reference Signs List 10 Refuse 11, 21 Casing 11a, 21a Hopper 11b, 11c, 21b, 21c Outlet 12 Crusher 13 Storage tank 13a Discharge port 14 Return conveyor 15, 25 Seal conveyor 15a, 25a Seal frame 15b, 15c, 25b, 25c Seal material 15d, 25d Support frame 15e, 25e Bearing 15f, 25f Roller 15g, 25g Transport belt 15h, 25h Pulley 15i, 25i Motor 15j, 25j Drive belt 15k, 25k Drive cylinder 25m Side seal 26 Transport conveyor

Claims (4)

[Claims] 1. An air conveyance device for circulating air in a transport pipe and transporting the refuse together with the air, wherein the hopper into which the refuse is charged is provided at an upper part, and a delivery port communicating with the transport pipe is provided at a lower part. A seal conveyor that is slidably provided in the casing so that the hopper side and the sending-out side in the casing can communicate with or shield from each other, and that can adjust the speed of a conveyor belt; A pneumatic conveying device comprising: a crushing means provided at the delivery port to crush the dust. 2. When the seal conveyer shields the hopper side and the delivery port side in the casing, the seal conveyer communicates with the casing so as to communicate with the seal conveyer. A storage tank having a discharge port at the bottom thereof, and return means for re-entering the refuse discharged from the discharge port of the storage tank from the hopper of the casing into the interior of the casing. The pneumatic conveying device according to claim 1. 3. The air conveying apparatus according to claim 1, wherein a plurality of the outlets of the casing are provided, and the seal conveyor and the crushing means are provided for each of the outlets. 4. The seal conveyor is provided with a side seal for shutting off air flowing through a gap between the casing and a side of the seal conveyor when the hopper side and the delivery port side in the casing communicate with each other. The pneumatic conveying device according to any one of claims 1 to 3, wherein: