KR19990077290A - Ejector - Google Patents

Abstract

The present invention relates to a discharge device comprising a housing (1) to which a low temperature incineration drum (3) discharge pipe (2) is connected. The residue discharge shaft 7 extends from the housing 1 and is connected to a conveying device which terminates at the outlet 14. A level measuring device 8 is arranged on the residue discharge shaft 7. According to the invention, the transfer device comprises a molded bottom plate 9, in which a bar screen 10 is formed at the remote end of the residue discharge shaft 7 opening. The bar screen 10 covers the discharge hole 13 for fine residues and terminates at the outlet 14 for coarse residues. The vibrator 11 is installed in the transfer device.

Description

Ejector

The present invention relates to a discharge device having a housing, into which a discharge pipe of an incineration drum is connected, from which a residue discharge shaft extends, the residue discharge shaft being connected to a conveying device which terminates at the outlet. At this time, the level measuring device is disposed on the residue discharge shaft.

A discharge device of this type is known from German Patent Publication 30 05 205 A1. The discharge device for the pyrolysis device described there is a remarkable effect in that the discharge container during operation is always filled with combustion residues to form an airtight joint. The level measuring device monitors the level in the vessel. At the outlet of the vessel, combustion residues are conveyed by the conveying apparatus and sent to the outlet. Only a portion of the residue is always conveyed by the conveying device so that the level of the housing does not go below the position of the level measuring device.

Separation of the residue into fine and coarse portions is not suggested to the skilled person.

Such a separator is known from the European patent publication EP 0 086 488 A3. Moreover, there is a bar screen with a vibrator installed. Combustion residues to be sorted fall onto this bar screen. At the bottom half of the bar screen there is an outlet for fine residues, and at the end of the bar screen there is an outlet for coarse residues.

Since the residue continues to fall onto the bar screen, the coarse residue is contaminated by fine residue when it reaches the outlet. Since new fine residues continuously fall onto the coarse residue, the residence time is not sufficient to shake off the fine residue from the coarse residue by vibrating the bar screen.

An object of the present invention is to complete a discharge device including a hermetic closure device by means of a separation device in which the coarse residue and the fine residue are separated from each other and the coarse residue is then cleaned from the particles of the adhered fine residue.

According to the present invention, the transfer device includes a molded separation bottom plate having a bar screen formed at an end spaced apart from an opening of the residue discharge shaft, and the transfer device is provided with a vibrator, and the bar screen has a fine residue. This is accomplished by covering the outlet hole and ending at the outlet of the coarse residue.

By using this discharge device, the advantage that the fine residue is shaken from the coarse residue on the separating base plate which is made to vibrate by the vibrator without subsequently falling onto the coarse residue is achieved. Coarse residue is placed on the rise of the profile while fine residue is collected in the valley of the profile. When the residue reaches the formed screen, the coarse residue is cleaned. Thereafter, the fine residue falls through the bar screen into the outlet hole for the fine residue and the purified coarse residue continues to be transferred through the bar screen due to the vibration of the transfer device and falls to the outlet for the coarse residue.

A continuous device or vessel can be connected to the outlet or outlet. Such vessels do not need to be hermetically connected since the residue discharge shaft is always given a seal by combustion residues.

For example, the residue discharge shaft is bent in the direction towards the feeder in front of the opening into the feeder. Doing so ensures that the residue is always slipped over the conveying device from the residue discharge shaft.

For example, the residue discharge shaft is sealed by a flexible aid to the conveying device. By doing so, a seal is achieved between both components that can withstand the relative movement of the conveying device relative to the residue discharge shaft.

The molded separator base consists of, for example, a molded thin metal plate or a molded casting. For example, the separating base plate has a sawtooth cross section.

The separating base comprises, for example, a curved cavity in the passage to the bar screen. Thereby, it is possible to effectively prevent coarse residue, which may include a wire mass, from being caught at the end of the separating bottom plate.

As another example, a cornerless partition wall may be disposed between the outlet for fine residue and the outlet for coarse residue. Again, it is possible to obtain the advantage that no wire mass can be caught.

The conveying device may for example be equipped with two separate controllable vibrators. For example, the frequencies of the two vibrators may be different.

By using the discharge device according to the invention it is possible to achieve the following advantages. That is, by the introduction of a feeder with a vibrator, the combustion residue mass can be compressed in the residue discharge shaft, and in doing so, the supply of air oxygen to the combustion device can be prevented better than ever possible. Can be. In particular, the advantage is achieved that the coarse residue is separated significantly from the fine residue than before.

Combinations consisting of the above-described molded separating base plates and bar screens may also be used for the separation or purification of other materials.

Hereinafter, the discharge device according to the present invention will be described in more detail with reference to the accompanying drawings.

1 shows a discharge device according to the invention,

2 shows a cross-sectional view through a molded separation bottom plate,

Figure 3 shows a plan view of a molded separating base plate on which a bar screen is formed.

1 shows a housing 1 of a discharge device to which a discharge pipe 2 of an incineration drum 3 in which waste is incinerated is connected. Here, combustion gas and combustion residues are generated, which lead through the discharge pipe 2 into the housing 1. Moreover, the rotatable discharge pipe 2 is sealed from the housing 1 via a seal 4. Combustion gas is discharged from the housing 1 through an exhaust hole 5 disposed at an upper portion thereof, the discharge hole 5 being hermetically coupled with an unillustrated device for the continuous treatment of the combustion gas, for example, a hot combustion chamber. It is. Solid combustion residues fall down in the housing 1. The residue discharge shaft 7 extends from the lower passage of the housing 1, which can be closed by the emergency slide 6. It is connected to the conveying device and includes a warp in the conveying direction of the conveying device just in front of the inlet. A level measuring device 8 is arranged on the upper part of the residue discharge shaft 7. The conveying device is regularly operated to produce a dense deposit of combustion residues in the residue discharge shaft 7, which prevents backflow of gases, in particular air oxygen, into the incineration drum 3.

The conveying apparatus is composed of a molded separating base plate 9 near the opening of the residue discharge shaft 7, a bar screen 10 formed in the conveying direction on the separating base plate 9, and a vibrator 11. This includes the installation zone of the eccentric rollers driven by the feeder and a motor not shown. The residue discharge shaft 7 is hermetically sealed to the conveying device by a flexible aid 12. The vibrator 11 may be controllable. By doing so, it is protected that the residue discharge shaft 7 continues to be hermetically closed by the residue. By vibrating the conveying device, the coarse residue and fine residue on the separating base 9 are separated from each other and move forward at the same time. Then, the fine residue is dropped by the bar screen 10 and then reaches the discharge hole 13 disposed at a predetermined place for the fine residue. The discharge hole 13 may be connected to a predetermined container, but may also be connected to a device for continuous processing such as, for example, a high temperature combustion chamber. The coarse residue is conveyed through the bar screen 10 to its end, where it drops to an outlet 14 arranged in place for the coarse residue. The container 15 is connected to the outlet 14. Between the outlet hole 13 and the outlet 14 there is a separating wall 16 without edges, in which no residue remains.

FIG. 2 shows a cross section through a separating bottom plate 9 comprising a sawtooth profile 9a. Fine residues accumulate in the valleys of the profile 9a, while coarse residues are placed on the tip of the profile 9a. The vibrating motion of the separating base 9 causes the fine residue adhering to the coarse residue to fall off so that the coarse residue purified as clean as possible remains.

3 shows the passage of the separating bottom plate 9 to the bar screen 10. The separating bottom plate 9 includes a cavity 9b that is bent in this passage area. By doing so, coarse residue such as, for example, wire lumps is prevented from being caught and remaining at the end of the separating bottom plate 9.

By using the discharge device according to the invention, on the one hand the backflow of air oxygen into the incineration drum 3 is prevented, and on the other hand the coarse residue is almost completely separated from the fine residue. Generally fine residues are processed continuously, while coarse residues consist of metal and glass parts which can be fed directly as raw residues.

Claims (7)

A discharge device with a housing (1), wherein the residue (1) is connected to the discharge pipe (2) of the incineration drum (3) from the housing (1) and to a transfer device terminating at the outlet (14) from the housing (1). In the discharge device in which the discharge shaft 7 extends, in which the level measuring device 8 is installed on the residue discharge shaft 7, The conveying device comprises a molded separator bottom plate 9 on which a bar screen 10 is installed at a remote end from the residue discharge shaft 7, a vibrator 11 is installed on the conveying device, and the bar Discharge device, characterized in that the screen (10) covers the discharge hole (13) for fine residue and ends at the outlet (14) for coarse residue. 2. Discharge device according to claim 1, characterized in that the residue discharge shaft (7) is bent in a direction along the conveying direction in front of the opening into the conveying device. 3. Discharge device according to claim 1 or 2, characterized in that the residue discharge shaft (7) is sealed with respect to the transfer device by a flexible aid (12). 4. Discharge device according to any one of the preceding claims, characterized in that the molded separating base plate (9) consists of a molded thin metal plate or a molded casting. 5. Discharge device according to any one of the preceding claims, characterized in that the shaping separating base (9) comprises a cavity (9b) bent in a passage towards the bar screen (10). 6. An edgeless partition wall (16) according to any one of the preceding claims, wherein an edgeless partition wall (16) is arranged between the outlet hole (13) for fine residues and the outlet (14) for coarse residues. Discharge device characterized in that. 7. Discharge device according to any one of the preceding claims, characterized in that two separate controllable vibrators (11) are provided in the transfer device.