JPH0942625A - Dust supplier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove clogging of waste easily by detecting the generation of clogging of waste in the waste reservoir of a dust supplier immediately. SOLUTION: A guide pipe 26 is arranged on the side surface of the waste reservoir 1 of a dust supplier main body 1 so that the lower end thereof is faced to both sides of a screw conveyer 2. Two sets of waste clogging removing devices 20, with drawing and inserting a push rod 27, connected to the tip end of the rod of a power cylinder 30, along the guide pipe 26, are installed. The waste reservoir 1a is provided with a waste stream detecting window 21 on the side wall thereof and an ITV 22 is equipped. A waste stream detector 23 is attached to a dust supplying chute 14 at the outlet port side of the dust supplier main body I. The inside of the waste reservoir 1 is monitored by the ITV 22 through the waste stream detecting window 21 while the flow of waste at the outlet port side is checked by the waste stream detector 23 to detect the generation of clogging of waste in the waste reservoir 1. When the clogging of waste is generated, the clogged waste is mashed by the push rod 27 of the waste clogging removing device 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust feeder for supplying municipal waste and industrial waste to a refuse incinerator for incineration.

[0002]

2. Description of the Related Art For example, a refuse incinerator built in a cleaning center is provided with a dust feeder on the upstream side for supplying refuse as fuel for incineration into the incinerator.

FIG. 4 is a schematic view of a dust collector for supplying waste to a conventional incinerator, which has a dust throwing section II at the upper end on the upstream side of the dust collector main body I. And the dust discharge part III is installed in the lower part of the other end side which is the downstream side of the dust collector main body I.

The dust collector main body I has a dust storage tank portion 1 at the upper end on the upstream side, which receives the dust supplied and thrown in by the dust feeding portion II from an upper inlet opening 1a, In addition, inside the screw conveyor 2, the screw blade 4 is wound around the screw shaft 3 in a spiral shape.
Is arranged so as to extend from one end side to the other end side so as to be rotatably supported, and one end side of the screw conveyor 2 is connected to a drive device 6 on a gantry 5 so that the screw conveyor 2 is rotationally driven by the drive device 6. Further, a paddle rotary blade 7 which is rotationally driven by a drive device 8 is arranged on the downstream side so as to face the screw conveyor 2, and further, on the inner upper surface of the dust storage tank portion 1, A swash plate 9 is installed in a direction orthogonal to the screw conveyor 2 so as to effectively seal the waste so that excess air does not enter the waste incinerator from the downstream side by narrowing the gap with the screw conveyor 2. It has a different structure.

Further, the dust input section II is connected to the apron conveyor 11 fixedly supported by a fixed support frame 10 so as to face the inlet opening 1a of the dust storage tank section 1 of the dust collector main body I. A drive device 12 installed on the support frame 10 for driving the apron conveyor 11.
Are connected via the power transmission mechanism 13.

Further, the dust discharge part III is constituted by a dust chute 14 connected to a discharge port on the downstream side of the dust collector main body I.

Reference numeral 15 denotes a foreign matter discharging device for removing and collecting unsuitable large-scale incineration substances mixed in the dust thrown into the dust collector main body I.

When the conventional dust collector having such a configuration is operated, the dust is continuously supplied from the dust input portion II through the inlet opening 1a of the dust collector main body I to the dust storage tank portion 1,
This is sequentially conveyed by the screw conveyor 2 in a constant amount to the downstream side and pushed out from the dust chute 14.

If dust clogging occurs in the dust storage tank portion 1 of the dust collector main body I during the above operation, the dust cannot flow from the downstream side to the dust chute 14 and cannot be fed into the incinerator. .

As a cause of clogging of dust, depending on the nature of incoming dust, a bridge 18 is formed inside the dust storage tank portion 1 of the dust collector main body I, and only the screw conveyor 2 idles to send the dust. Depending on the nature of the incoming dust, the dust is bitten into a wedge-shaped lump 19 at the throat between the swash plate 9 and the screw shaft 3, which causes the screw conveyor 2 to rotate. It has been found that there are situations in which garbage cannot be sent.

Conventionally, there is no means for detecting such dust clogging, and a plurality of dust level meters 16 are attached to the side wall of the dust storage tank portion 1 in the vicinity of the inlet opening 1a of the dust collector main body I, and the dust level meters 16 are attached. Based on the detection signal from
By controlling the driving device 12 of II to switch the operation and stop of the apron conveyor 11 to control the input amount and supply dust to a certain amount, when dust clogging occurs, the dust collector A worker manually moves or removes the clogged dust from the inspection port 17 provided on the side wall of the dust storage tank portion 1 of the main body I.

[0012]

However, in the conventional dust collector, there is no effective means for early detection of occurrence of dust clogging in the main body I of the dust collector, and therefore it takes a lot of time to discover. Also, when dust is clogged inside the dust storage tank portion 1 of the dust collector main body I, the lump of dust that has caused the clogging by hand using the inspection port 17 on the side surface of the dust storage tank portion 1 is used. Since it is moved or removed, there is a problem that the declogging work requires a lot of labor and time under the condition that the working environment is extremely poor,
Moreover, since it takes a lot of time to clear the dust clogging, the dust cannot be fed as fuel into the refuse incinerator for a long time, and as a result, there will be no combustibles in the refuse incinerator and it will burn. This also caused the temperature to drop, the CO concentration to rise, and the amount of dioxins generated to increase.

Therefore, the present invention is intended to make it possible to immediately detect the occurrence of dust clogging in the dust storage tank portion of the dust collector main body and to easily remove the dust clogging. .

[0014]

In order to solve the above-mentioned problems, the present invention installs a screw conveyor in the main body of a dust collector, and feeds it from an inlet opening above one end which is the upstream side of the screw conveyor. The dust supplied to the dust storage tank inside the dust collector is transferred to the downstream side inside the dust collector main body by the rotation of the screw conveyor and discharged from the dust chute at the discharge section on the downstream side. In the dust collector main body of the machine, a push rod is connected to the side wall of the dust storage tank of the cylinder, and a push rod is connected to the rod end of the cylinder so that the tip of the push rod can remove clogging inside the dust storage tank of the dust collector main body. Penetrate the jam release device and attach downwards,
In addition, an ITV for monitoring the inside of the dust storage tank of the dust collector body is installed, and further, in the middle of the dust chute,
A dust flow detector for detecting the flow of dust in the dust chute is provided.

As a result, if dust clogging occurs in the dust storage tank of the dust collector main body during operation of the dust collector, it can be mechanically removed by operating the dust clogging release device to easily clear the dust clogging. In addition, by using a combination of the ITV that monitors the inside of the dust collector main body from the dust flow detection window provided on the side surface of the dust storage tank and the dust flow detector provided on the dust chute, the dust collector The clogging of dust inside the main body can be checked on both upstream and downstream sides of the screw conveyor, and the occurrence of dust clogging can be immediately detected.

[0016] Two dust blocking devices are installed side by side so that the tips of the push rods face each other at a position where dust is pushed between the screw conveyor and the conveyor trough across the screw conveyor. The dust on both sides can be dropped and pushed between the screw blades of the screw conveyor to easily clear the dust clogging.

Further, a guide pipe for guiding the push rod of the dust clogging release device is attached by penetrating through the side wall of the dust storage tank portion of the main body of the dust collector, and the push rod is inserted into and removed from the guide pipe, and By connecting the upper end of the guide pipe and the lower end of the cylinder by expansion to cover the lower end of the cylinder rod and the upper end of the push rod, the push rod can be smoothly taken in and out. In addition, the push rod does not break at the connecting portion with the rod tip, and since the push rod is covered with the expansion, scattered dust or the like does not adhere to the rod or the push rod.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an example of the dust collector of the present invention. Like the conventional example shown in FIG. 4, the dust collector main body I is shown.
The dust input part II is installed at the upper end of the dust collector main body I and the dust discharge part III is provided at the lower end of the dust collector main body I at the lower end of the dust collector main body I. A screw conveyor 2 including a shaft 3 and a screw blade 4 is housed inside, is driven to rotate by a drive device 6, and is connected to an inlet opening 1a provided at an upper position of the dust storage tank portion 1. From the garbage throwing section II, the entrance opening 1
The dust supplied into the dust storage tank portion 1 of the dust collector main body I via a is sent to the downstream side by the screw conveyor 2, and the paddle rotary blade 7 rotating on the downstream side is rotated at high speed, whereby the screw conveyor 2 is used. A certain amount of the sent-out waste is cut into the dust chute 14 of the waste discharge part III so as to be supplied into the waste incinerator. In a dust collector having a structure in which a swash plate 9 for effectively performing dust sealing is fixed so that various air does not enter, the screw conveyor is provided on the side wall of the dust storage tank portion 1 of the dust collector main body I. It is common to install two debris release devices 20 with their ends facing each other across the conveyor trough 1b on both sides of the two and the screw conveyor 2 by penetrating from the outside to the inside. , Provided the dust flow detection window 21,
An ITV (CCD camera) 22 that exposes the inside of the dust storage unit 1 of the dust collector main body I through the dust flow detection window 21 is installed outside the dust collector main body I, and the dust collector is displayed on the monitor screen of the ITV 22. The flow of dust in the dust storage tank portion 1 of the main body I can be monitored, and the presence or absence of dust flowing in the dust chute 14 at the midway position of the dust chute 14 is detected using microwaves (radio waves). A dust flow detector 23 for detection is installed.

As shown in the enlarged view of FIG. 3, in the dust clogging releasing device 20, the lower end portion is obliquely upwardly passed through the through hole 24 provided in the side wall of the dust storage tank portion 1 of the dust collector main body I and is supported. An upper end of a push rod 27 having an obliquely downward guide pipe 26 fixed to the side surface of the refuse storage tank 1 by a member 25 and having an outer diameter slightly smaller than the inner diameter of the guide pipe 26 for insertion into the guide pipe 26. Part 2 overhanging the support frame 10 of the garbage throwing section II
The connecting pin 31 is attached to the tip of the rod 30a of the power cylinder 30 that is tiltably attached to the cylinder mount 29 on the upper part 8.
And the tip ends of the push rod 27 and the rod 30a are inserted into the guide pipe 26, and the power cylinder 30 is rotated by the driving force of the drive device 32 of the power cylinder 30.
The push rod 27 is moved forward and backward from the lower end of the guide pipe 26 toward both sides of the screw conveyor 2 in the dust collector main body I by expanding and contracting the upper end of the guide pipe 26. And a lower end portion of the power cylinder 30, the bellows-shaped expansion 3 so as to surround the connecting portion between the rod 30a and the push rod 27.
3 is attached so that the upper ends of the rod 30a and the push rod 27 are not exposed, and a shock relay is incorporated in the drive device 32 of the power cylinder 30 so that the push rod 27 is moving forward. A shock relay detects an overload applied to the push rod 27 on the way, and the extension operation of the power cylinder 30 is stopped.

The dust flow detector 23 installed in the dust chute 14 is mounted so that a microwave (radio wave) transmitter 23a and a receiver 23b face each other so as to sandwich the dust chute 14. When the microwaves are blocked by the dust flowing in the dust chute 14, the dust flow in the dust chute 14 is detected, the dust flow in the dust chute 14 disappears, and the signal is transmitted. Bowl 23
When the microwave transmitted from a to the receiver 23b is received by the receiver 23b without being blocked by the dust in the dust chute 14, the dust is not detected. When the flow of dust inside the dust chute 14 is no longer detected, it is detected that dust has clogged within the dust collector main body I, and after the set time has elapsed, an alarm is sounded to notify the occurrence of dust clogging. There is.

The other structures are the same as those shown in FIG. 4, and the same parts are designated by the same reference numerals.

In the normal operation of the dust collector of the present invention, the lump of dust supplied from the dust input portion II into the dust storage tank portion 1 of the dust collector main body I is rotated by the drive device 6 and the screw conveyor 2 is rotated. Is sent to the downstream side by the high speed rotation of the paddle rotary blade 7 and is cut out into the dust chute 14 by a fixed amount and is supplied to the refuse incinerator for incineration.

In the above normal operation, the presence or absence of dust flowing in the dust chute 14 is monitored by the dust flow detector 23, and the flow of dust in the dust storage tank portion 1 of the dust collector main body I is also monitored. The situation is ITV2 from the waste flow detection window 21.
Monitored by 2.

During operation of the dust collector, the inside of the dust storage tank 1 of the dust collector main body I is monitored through the dust flow detection window 21 on the side surface of the dust storage tank portion 1 of the dust collector main body I. ITV22
On the monitor screen from, the image that the flow of dust inside the dust tank 1 of the dust collector main body I has stopped is displayed,
In addition, when the dust flow detector 23 provided at an intermediate position of the dust chute 14 no longer detects the flow of dust and sounds an alarm notifying that the dust is clogged, the inside of the dust storage tank portion 1 of the dust collector main body I. When the occurrence of dust clogging is detected, the clogging is released. In this case, when the dust clogging is due to the dust bridge formed at the upper part of the screw conveyor 2 in the dust storage tank portion 1 in the dust collector main body I, In order to remove the clogging of dust, first, the drive device 12 of the dust throwing section II is stopped to move from the dust throwing section II to the dust storage tank section 1 of the dust collector body I.
After stopping the supply of dust to the inside and also stopping the drive device 6 for the screw conveyor 2, the drive device 32 of the dust blocking device 20 is operated to extend the power cylinder 30 and remove the push rod 27. So that it sticks out towards the bridge. At this time, the two debris release devices 20 may be simultaneously actuated to cause the two push rods 27 to project, or only one of them may be actuated, and the situation where a bridge is formed. You can use them according to your needs. When the push rod 27 is projected into the dust collector main body I as shown by the chain double-dashed line in FIG. 3, the lump of dust forming the bridge is crushed by the push rod 27 and the screw conveyor 2 and the conveyor trough 1b are separated. It can be pushed between the screw blades 4 from the gap between them, and after that, the protruding push rod 27 is retracted into the guide pipe 26, and then the operation of the screw conveyor 2 and the dumping of dust from the dump truck II are restarted. As a result, the dust clogging generated in the dust storage tank portion 1 of the dust collector main body I can be released and the supply of dust to the waste incinerator can be restarted.

When dust is clogged due to wedge-like dust being caught in the jaw between the screw conveyor 2 and the swash plate 9, the dust thrower II is fed to the dust collector main body. After stopping the supply of dust to the inside of I, the drive device 6 for the screw conveyor 2 is switched to the reverse rotation operation, and the screw conveyor 2 is reversed to return the dust from the downstream side to the upstream side in the dust collector main body I. Then, the dust is once disentangled, and then the drive device 6 is again rotated in the normal direction so that the screw conveyor 2 supplies dust. When the dust clogging is released by repeating this operation a necessary number of times, the normal operation is resumed. However, when the screw conveyor 2 is repeatedly rotated in the reverse and forward directions,
When the dust clogging is not released, the screw conveyor 2 is stopped and the push rod 27 of the dust clogging release device 20 is projected by the same procedure as when the dust bridge is formed. Then, the lump of dust that is bitten by the jaw between the screw conveyor 2 and the swash plate 9 and causing the clogging is pushed down to be dropped, and the dropped dust is pushed between the screw blades 4. Then try to remove the clogged garbage. Also in this case, the two push rods 27 may be operated simultaneously or one by one.

Therefore, in the present invention, the lump of dust that has been the cause of the clogging in the dust storage tank portion 1 of the dust collector main body I is forcibly removed by a mechanical operation without manpower, and the screw conveyor 2 The screw blade 4 can be pushed into a state where it can be easily bitten, and the ITV 22 and the dust chute for monitoring the inside of the dust storage tank portion 1 from the dust flow detection window 21 provided in the dust storage tank portion 1 of the dust collector main body I. By using it in combination with the dust flow detector 23 provided in 14, the dust clogging in the dust storage tank portion 1 of the dust collector main body I can be checked both upstream and downstream of the screw conveyor 2. Occurrence of clogging can be detected immediately, and two dust clogging releasing devices 20 are arranged side by side toward both sides of the screw conveyor 2, so that the dust clogging releasing device can be detected. 0 can be operated independently or two at a time, and can be used properly according to the situation of dust clogging and can effectively remove dust clogging. Moreover, in the power cylinder 30 that constitutes the dust clogging release device 20. Provided with a shock relay, the dust release device 20
When the overload is applied to the push rod 27 while the push rod 27 is being pushed forward into the lump of dust, the overload is detected by the shock relay and the power cylinder 30 Since the extension operation is stopped, it is possible to prevent the push rod 27 from being subjected to an excessive force by resetting the stopped push rod 27 and pulling it back into the guide pipe 26. , Push rod 2
It is possible to prevent bending and the like at 7 and making it impossible to pull back.

The present invention is not limited to the above-described embodiment, and for example, the dust blocking device 20 can be used.
The power cylinder 30 constituting the
A hydraulic cylinder type or a pneumatic cylinder type may be used in place of the power cylinder type equipped with the above. Also, in the dust removing device 20, the tip of the push rod 27 is the screw conveyor 2 and the conveyor trough 1b. So that it is in a position to push garbage between
Although the example in which the two are installed side by side is shown, the guide pipe 26 is attached to the dust collector main body I so as to be able to swing, and the dust on both sides of the screw conveyor 2 can be pushed down by the single dust blocking device 20. Needless to say, various modifications may be made without departing from the scope of the present invention.

[0029]

As described above, according to the dust collector of the present invention, the dust supplied from the dust feeding portion into the dust storage tank portion of the dust collector main body through the inlet opening on the upstream side is stored in the dust collector main body. In order to remove the dust clogging generated in the dust storage tank part of the dust collector when it is transported from the upstream side to the downstream side by the screw conveyor of the above and discharged from the dust chute on the downstream side, the screw conveyor is sandwiched on both sides. The push rod that pushes in dust is connected to the rod tip of the cylinder, and the dust blocking device is provided so that the push rod can move in and out of the dust collector body by the cylinder. It is equipped with an ITV for monitoring the inside of the dust storage tank of the dust collector main body from the dust flow detection window provided on the side surface of the dust collector, and detects the presence of dust flowing in the dust chute at an intermediate position of the dust chute. Since it is equipped with a dust flow detector for dust collection, mechanical operation by the dust clogging release device can be performed without the need for human labor on the lumps of dust that had caused clogging in the dust storage tank of the dust collector body. The dust clogging can be easily released by using the ITV and the dust flow detector can be used in combination to immediately detect the occurrence of dust clogging in the dust collector body. Therefore, it is possible to detect and clear the dust clogging within a short time after the clogging occurs, so even if dust clogging occurs, the adverse effect on combustion in the refuse incinerator should be minimized. Is possible,
By installing two debris clearing devices side by side through the side of the garbage storage tank, it is possible to use either one or two debris clearing devices properly depending on the situation of the clogging, and to effectively remove the clogging. It has an excellent effect that it can.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a dust collector of the present invention.

FIG. 2 is a view in the direction of arrows AA in FIG. 1;

3 is a partially cutaway enlarged view showing a B part in FIG. 1. FIG.

FIG. 4 is a schematic view showing a conventional dust collector.

[Explanation of symbols]

 I Dust collector main body II Garbage input part III Garbage discharge part 1 Garbage storage part 1a Inlet opening part 1b Conveyor trough 2 Screw conveyor 14 Dust chute 20 Garbage release device 22 ITV 23 Garbage flow detector 26 Guide pipe 27 Push rod 30 Power cylinder 30a Rod 33 Expansion

Claims (3)

[Claims] 1. A screw conveyer is installed in the dust collector main body, and the dust supplied from the dust feeding part into the dust collector main body is passed through an inlet opening above one end which is an upstream side of the screw conveyer. A cylinder rod is attached to the side wall of the dust storage tank part of the dust collector main body in the dust collector in which the inside of the dust collector main body is transferred to the downstream side by the conveyor and discharged from the dust discharge chute of the downstream side discharge part. To attach a dust blocking device that connects the push rod to the tip and releases the dust inside the dust collector main body at the push rod tip, and to monitor the inside of the dust storage tank of the dust collector main body And a dust flow detector for detecting the flow of dust inside the dust chute is installed in the dust chute. 2. The dust collector according to claim 1, wherein two dust blocking devices are arranged side by side so that the tips of the push rods face each other at a position where the dust is pushed between the screw conveyor and the conveyor trough with the screw conveyor interposed therebetween. Machine. 3. A guide pipe for guiding a push rod of a dust clogging release device is attached by penetrating through a side wall of a dust storage tank portion of a dust collector main body, and the push rod is inserted into and removed from the guide pipe, and The dust collector according to claim 1 or 2, wherein the upper end of the guide pipe and the lower end of the cylinder are connected by expansion so as to cover the rod and push rod of the cylinder.