JPS624461A - Cyclone system garbage separator - Google Patents

Abstract

PURPOSE:To effectively sweep off suspended garbage by providing a screen above an air current inlet of a cyclone and further furnishing an air header having an air injection nozzle which is made free to rotate. CONSTITUTION:In a system for collectively treating city garbage by pneumatic transportation, a screen 17 is horizontally stretched above an air current inlet 16, an air header 18 having a nozzle 19 for injecting air obliquely downward and which is made free to rotate around the central axis of a cyclone 15 is further provided above the screen 17 and air is supplied from the outside of the cyclone 15. Consequently, suspended grabage such as newspapers and vinyl sheets can be effectively swept off and semipermanent operation is made possible, since the reaction force resulting from the injection of air is used as the thrust.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a cyclone garbage separator that is suitably applied to a system that centrally processes urban garbage generated from each household such as an apartment complex by pneumatic transportation. Regarding.

[Conventional technology]

2. Description of the Related Art Conventionally, pneumatic transportation equipment for unspecified solid materials such as municipal waste has been installed, for example, in large-scale housing complexes such as apartment complexes. Figure 1 shows the typical equipment flow. 1 shows a dust chute in a high-rise residential building, and a garbage inlet 2 is provided on each floor of each dust chute l. The dust chute 1 of each building is connected to the regional transport pipe 3 via a discharge valve 4 or a storage discharger 5. An intake valve 6 is connected to one end of the regional transport pipe 3, and the other end is connected to the intake valve 6.
It is connected to the main transport pipe 8 via the fFr valve 7.

The main transport pipe 8 leads to the collection center. There is a garbage separator at the collection center.9. Dustproof machine 10. Transport blower 11
Garbage separated by the garbage separator 9 is collected in a storage and discharge tank 12, and from there is transported to a garbage incinerator or other place by a secondary transfer vehicle 13. Such a pneumatic waste transport system is normally operated under automatic control, and by operating the transport blower 11 and opening the intake valve 6, the waste in the regional transport pipe 8 is transported to the collection center via the main transport pipe 8. The garbage and garbage are automatically collected by the garbage separator 9 and dust prevention device 10. A cyclone is usually used as the dust separator 9.

[Problem that the invention seeks to solve]

In the above-mentioned pneumatic transport system for municipal waste, waste containing a mixture of newspapers, vinyl sheets, plastic bags, etc. is transported by air, but such sheet-like floating waste gets caught up in the air currents. Therefore, in the cyclone type dust separator 9, there is a problem in that the dust gets caught up in the upward flow, and the separation function from the conveying air deteriorates.

In addition, a filter 14 (Fig. 1) was sometimes installed near the air outlet of the garbage separator 9, but if such a filter was installed, sheets would stick to it and cause clogging. There was a problem that the device function further deteriorated. If a mechanical brush is provided to remove this clogging, there is a problem that this brush wears out and cannot be used semi-permanently, and there is also a problem that dirt gets caught in the brush.

In addition, if air is taken in from outside the system to blow away debris while the system is operating, excess air will enter the system, which may exceed the required transportation air volume and lead to an increase in leakage. However, there is a problem in that the transportation blower becomes larger and the transportation power increases.

[Means to solve problems]

The present invention is intended to solve the above-mentioned problems in a cyclone type garbage separator installed in a pneumatic garbage transport pipe.

A screen is stretched horizontally inside the cylindrical part of the cyclone at a position above the air flow population, and a screen is stretched horizontally above the screen to direct the air extending horizontally.
The cyclone is rotatably installed around the central axis of the cyclone, and an air injection nozzle is injected into the air in such a way that the air in the air header is injected diagonally downward, and by this injection, the air header is The cyclone was installed so that it could rotate, and a conduit was installed inside the air header to supply air from outside the cyclone. It is characterized by

In this case, as a more preferable embodiment, a screen configured with a large number of slits extending radially from the central axis of the cyclone is used, and the slits of the screen are provided with an inclination along the injection direction of the air injection nozzle 19. Set it up.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The content of the present invention will be specifically explained below according to the embodiments shown in the drawings.

〔Example〕

FIG. 2 shows the main parts of a cyclone type garbage separator according to the present invention. The cyclone main body is composed of a cylindrical part 15 and a conical part connected below the cylindrical part 15 according to the usual form, and the cylindrical part 15 is provided with an air inlet 16 in the tangential direction thereof, and an air outlet 21 is provided in the axial center of the top part. provided. In the present invention, a screen 17 is installed inside this cylindrical portion 15 at a position above the air inlet 16. A rotary air header 18 is installed above this screen 17.

The screen 17 has a disk-like outer shape as schematically shown in FIG. 3, and is installed horizontally within the cylindrical portion 15 with its center aligned with the central axis of the cyclone.

As for the structure of this screen 17, as shown in FIG. 3, it is preferable to form a large number of slits 21 extending radially from the center, and to make all the slits 21 tilt in the same direction. .

The air header 18 is rotatably installed above the disk-shaped screen 17. That is, as shown in FIG.
A hollow rotating shaft 23 is arranged coaxially and perpendicularly to the central axis of the screen 17 via a rotary seal joint 22, and an air header 18 is mounted horizontally from this hollow rotating shaft 23. In the illustrated example, this air header 18
shows an example in which two air rudders are installed on the hollow rotating shaft 23 so as to extend in opposite directions. When compressed air is supplied to the pipe line 20, the air is supplied to the air header 18 through the rotary seal joint 22 and the hollow rotating shaft 23.

This air nozzle 18 has an air injection nozzle 1.
9 is configured such that the air in the air header 18 is injected diagonally downward and by this injection, the air header 18
It is mounted so that it can rotate on its own axis. That is, the third
As seen in the arrows in the figure.

The air injection nozzle 19 is mounted so that the air header 18 itself rotates in one direction due to the reaction force of the air injection. By rotating the header 18, the entire surface of the screen can be cleaned at regular intervals, which requires less air than when cleaning the entire surface constantly using a fixed nozzle.

The relationship between the installation and installation of the air injection nozzle 19 is shown in FIGS. 4 to 7.

FIG. 4 schematically shows the positional relationship between the screen 17 and the air header 18. 1 For example, when viewed in longitudinal section toward the center, an air injection nozzle 19 directed downward to the left, for example, is attached to the air header 18. This causes the air header 18 to rotate clockwise as shown by the arrow. In this case, the air injection nozzle 19 may be in the form of a slit along the longitudinal direction of the air header 18, as shown in FIG. 18 may be arranged in parallel in a straight line along the longitudinal direction. When forming the slits 21 of the screen 17, as shown in FIG.
Each of the slits 21 is formed to be tapered along the direction of the air flow by the slits 9, and more preferably, the slits 21 are inclined in the direction of the jet stream of air jetted diagonally downward. As a result, the sheets 25 caught on the lower surface of the screen 17 are blown downward by the jet from the slit 21 when the air header 18 rotates to this area.

FIG. 7 shows a case where the cyclone type garbage separator according to the present invention is incorporated into a pneumatic garbage transportation system.

FIG. 2 is a flow diagram that allows effective supply of sweeping air to the air header 18. FIG. In other words, the dust separator 9 of the present invention is connected to the dustproof machine 10 and the transportation blower 11 in the same manner as in FIG. 10 and the outside air intake port 26, and a cleaning blower 27 is interposed in this connecting pipe, the capacity of the transport blower 11 can be increased without increasing the capacity just by switching the valve. This allows a garbage collection operation that involves brushing off the garbage with the screen 17, and also allows outside air to be taken in as appropriate after the collection operation.

To explain more specifically, the air outlet 2 of the garbage separator 9°
I and the air volume 28 of the dustproof device 10 are connected by a main exhaust pipe 29. Air line 20 to air header 18 is connected to blower 27
connected to. The suction side pipe line to the blower 27 is connected to an outside air pipe 30 leading to the outside air intake port 26 and to the dustproof device 10.
It is branched into a return pipe 31 leading to the exhaust side of the pipe. external trachea 3
An opening/closing damper 32 is installed in the return pipe 31, and an opening/closing damper 33 and a backflow prevention damper 34 are interposed in the return pipe 31. With this configuration, the damper 32 is closed during garbage collection operation, and the damper 32 is closed during garbage collection operation.
3 is opened and the blower 27 is operated, the air supplied from the air header 18 by the cyclone is recovered and reused on the exhaust side of the dustproof device 10, so air from outside the system is sent to the air header 18. There is no need to increase the capacity of the blower 11 as in the case of supplying air. In other words, if the air for sweeping the screen is taken in from the outside air,
Since the amount of air flowing through the exhaust system connected to the blower 11 from the anti-mold device 10 increases by that amount, it is necessary to increase the capacity of the large blower 11. Even without increasing the size, the air volume for screen sweeping and the power for 18 rotations of the air header can be secured with a small blower. From the above, 1. For example, if the air volume for screen sweeping is Q, then the blower 11
Normally, the maximum capacity of a cleaning blower is about -5QQOmmAg, whereas a cleaning blower has a maximum capacity of -500mmAg.
The required power ratio is as follows.

QX-5000mmAg: QX-
500mmAg-10:1, which is about 1710 to 1/8.

The garbage collection operation is normally performed intermittently at predetermined intervals (the blower 11 is operated intermittently), and the pressure inside the transport pipe, which is negative during operation, is reduced to atmospheric pressure when it is not in operation. According to one piece of equipment, it is necessary to return it.
If the damper 33 is closed, the damper 32 is opened, and the blower 27 is stopped, outside air is naturally introduced into the garbage separator 9'' from the outside air intake port 26 through the pipe line 20, returning the inside of the pipe to atmospheric pressure. At that time, the transport pipes, cyclones, etc. have a large capacity when combined, so they act as a large-capacity negative pressure tank and equalize the pressure, so the large amount of water introduced is The air header 18 rotates due to the air, and the air header 18 rotates when the blower 11 is at rest and there is no upward flow within the cyclone, so debris is likely to fall under its own weight. , the dust can be removed more effectively on the screen 17, and in this case, since the blower 27 is inactive, the dust can be removed without power. There is a bird effect.

Therefore, the present invention also has two aspects. In garbage collection equipment in a garbage pneumatic transportation system that connects a cyclone garbage separator and a dustproof device.

As this cyclone type garbage separator, inside the cylindrical part 15 of the cyclone, at a position above the air inlet 16,
The screen 17 is stretched horizontally.

An air header 18 extending horizontally is installed at a position above this screen 17 so as to be rotatable around the central axis of the cyclone, and an air injection nozzle 19 is connected to the air header 18 so that the air in the air header 18 is The air header 18 is installed so that it is injected diagonally downward and the air header 18 can rotate due to the reaction force of the ejection, and a conduit 20 for supplying air from outside the cyclone is provided inside the air header 18. using a cyclone type garbage separator.

Then, the air intake pipe 20 to the air header 18 was switchably connected to the outside air intake and the exhaust side of the dustproof device 10 via the blower 27.

The present invention provides garbage collection equipment characterized by the following features.

[Effect]

The garbage separator of the present invention can be used in a garbage pneumatic transportation system that targets municipal garbage that contains floating garbage such as newspapers and vinyl sheets (or bags), and removes garbage from the conveying air. When separating garbage using a cyclone method, such floating garbage can be effectively brushed off. And 5. This dust removal uses the thrust generated by the reaction force from the air jet to rotate the hengoo in a state where it is not in contact with the screen, so it can be operated semi-permanently without any problems of wear. In addition, air for obtaining this thrust can be procured without increasing the capacity of the main blower by circulating the air within the system. Also, depending on how it is connected to the dustproof device, it is possible to brush off dust from the screen without power during the 5-stop operation.

[Brief explanation of the drawing]

FIG. 1 is an equipment layout diagram of a conventional pneumatic garbage transportation system, and FIG. 2 is a schematic sectional view showing the main parts of the garbage separator of the present invention.
FIG. 3 is a conceptual diagram showing the relationship between the screen and air header according to the present invention, FIG. 4 is an enlarged conceptual diagram showing the relationship between the screen and air and goo according to the present invention, and FIG.
Figure 5 is a partially enlarged view showing an example of an air hemlock. Part 6 is a partially enlarged view showing another example of an air hemlock. Figure 7 is a hole cover arrangement when connecting the garbage separator of the present invention to garbage collection equipment. It is a diagram. 9...Cyclone type garbage separation a, 10...Dust prevention machine. 15... Cylindrical part of the cyclone, 16... Air inlet. 17...Screen, 18...Air Hengoo. 19...Air injection nozzle, 20...Air supply pipe to the air header, 21...Slit in the screen.

Claims (2)

[Claims] (1) In a cyclone type garbage separator installed in an air transport pipe for garbage, a screen 17 is horizontally stretched inside the cylindrical portion 15 of the cyclone and above the air inlet 16. An air header 18 extending horizontally is installed at a position above the screen 17 so as to be rotatable around the central axis of the cyclone, and an air injection nozzle 19 is installed in the air header 18. The air header 18 is installed so that the air is injected diagonally downward and the air header 18 rotates on its own axis, and a conduit 20 for supplying air from outside the cyclone is provided inside the air header 18. A cyclone type garbage separator featuring: (2) A patent in which the screen 17 is configured with a large number of slits 21 extending radially from the central axis of the cyclone, and the slits 21 have an inclination along the injection direction of the air injection nozzle 19. A cyclone type garbage separator according to claim 1.