JP3015563B2 - Air seal device for opening - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air seal device which has an opening through which an object always passes and which can prevent the inflow of outside air in equipment in which it is difficult to provide an air discharge port for air seal on the bottom surface. The present invention relates to the same device which can be advantageously applied to the blocking of the outside air inflow at the opening.

[0002]

2. Description of the Related Art The structure of an opening of a facility accommodating a conventional crusher will be described with reference to FIG. In FIG. 7, 1 is a solid such as refuse, 2 is a transport line thereof, 102 is an outlet opening, 103 is a baffle, and 104 is a refuse crusher (for simplicity, the structure is omitted). The inlet / outlet openings 101 and 102 (the inlet opening 101 is not shown) of the refuse crusher 104 are always open because refuse passes therethrough. Therefore, when introducing an inert gas into the crusher 104 in order to prevent the occurrence of an explosion in the crusher 104, it is necessary to use a huge amount of inert gas in consideration of the intrusion of outside air. . In order to avoid this, there may be a case where a baffle plate 103 is provided, but it does not function sufficiently because the size of the passing object varies.

[0003]

SUMMARY OF THE INVENTION An inlet of a refuse crusher,
The discharge port is kept open because refuse always passes through the feeder and the conveyor, respectively. On the other hand, combustible substances are often mixed in the garbage, and it is difficult to avoid the occurrence of an in-flight explosion due to sparks during crushing. In order to prevent this, it is the most reliable means to always maintain the inside of the crusher in an inert gas atmosphere. However, since the size, amount, and properties of the garbage vary, the airflow passing through the opening is The movement is not constant. Therefore, the amount of the inert gas to be charged into the machine must be enormous in consideration of safety. From the viewpoint of energy saving and resource saving, achieving the reduction of the charged gas is a major issue.

[0004] For this purpose, a method of providing a baffle plate in the form of a hole has been adopted, but the effect is insufficient, and it is best to use a blocking effect by forming an airflow film. Therefore, the suction port and the air outlet of the gas (air or the like) cannot be arranged up and down due to the constant movement. It is also difficult to provide these on the left and right sides to minimize the entrainment of refuse.

The present invention has been made in consideration of the above-mentioned technical state, and has an air seal at an opening portion capable of stably forming an airflow film capable of blocking the inflow of outside air while minimizing entrainment of dust by blowing up dust. It is intended to provide a device.

[0006]

According to the present invention, there is provided an apparatus in which an object to be processed flows in and out by a conveying means, and the object to be processed is processed in an internal closed atmosphere. A pair of side walls and a top wall covering the conveying means are provided in the vicinity of the inlet opening, and one or more blowers for discharging air in a horizontal direction substantially perpendicular to the moving direction of the conveying means on the side walls. A closed-atmosphere treatment device, characterized in that an outlet is provided, the opening of the outlet is formed so as to be closer to the lower position, and a suction port for vertically sucking the discharged air is provided on the upper surface wall. This is an air seal device for the opening.

That is, in the present invention, a cover is provided on a pair of side walls and a top wall of a means for supplying or transporting solids such as refuse, and a gas (air or the like) outlet is provided on the side walls and the suction is performed on the top wall. This is an air seal device for an opening in which an opening is arranged to form a film for blocking outside air by an air flow.

[0008] One or more outlets in the side wall are provided in one or more rows in the direction of transport of the object, and in the case of one, a slit-shaped opening closer to the bottom has a wider width. In the case of individual pieces, the basic form is to make the outlet larger in diameter nearer the bottom. Although the air outlet is basically provided on both the left and right sides of the side wall, it may be provided on only one side.

In the suction port of the upper surface wall, one or a plurality of suction ports having the same diameter or different types are arranged in one or more rows in the direction of transport of the object.

An adjusting damper can be provided for each blow-out, suction port or their compartment (chamber) so that the gas injection pressure (speed) and suction pressure (speed) can be adjusted.

The height of the lowermost outlet of the side wall is naturally set so as not to be buried in the layer of the transported object.

[0012]

The gas flowing from one or more side wall outlets draws a trajectory according to the respective diameter, wind pressure and outlet angle, reaches the suction port on the upper wall, and is exhausted as exhaust gas. The shape and size of the air outlet and suction port, the blowing speed / suction speed, and the blowing angle are selected so that the trajectory of the airflow is evenly distributed over the entire opening. An airflow film is formed.

If the flow velocity of the gas forming the airflow film is selected to be sufficiently large compared to the airflow velocity of the outside air, the outside air is almost shut off.

[0014]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view of a refuse crusher, and FIG. 2 is a sectional view taken along the line AA of FIG. 1 and 2, 1 is a solid such as refuse, 2 is a conveyor, 3 is an inlet and an outlet side wall, 4
Is a top wall of the inlet and the outlet, 5 is a plurality of outlets provided on the side walls of the inlet and the outlet (larger as the diameter of the lower outlet is larger), 6
Is a suction port provided on the top wall, 10 is blow-off air, 11 is suction air, 101 is an inlet opening, 102 is an outlet opening,
Reference numeral 104 denotes a dust crusher (detailed structure omitted).

The air seal device at the opening has the outlets 5 on the side walls 3 on both sides of the inlet side wall 3 (the same applies to the outlet side wall 3).
Is discharged from the suction port 6 while drawing a locus 7 as shown in FIG. As a result, the inlet opening 101 (the outlet opening 102
The same is true).

When a plurality of air outlets 5 are provided, as shown in FIG. 3, the diameter of the lower outlet 5 is made large, and a damper 8 is provided in each outlet 5 to provide a blown air. Preferably, the amount can be adjusted.

When one air outlet 5 is provided, it is preferable to provide a slit-shaped outlet 5 having a width that is wider downward as shown in FIG.

(Embodiment 2) Another embodiment of the present invention will be described below with reference to FIG. FIG. 5 shows a case where the air outlet 5 is provided only on one side wall 3 of the inlet or outlet side wall 3. In the figure, the same reference numerals as those in FIGS.

The air sealing device according to the second embodiment has the same function as that of the first embodiment, and therefore the description is omitted.

An automatic shut-off mechanism 12 is provided in the pipe of the lowermost outlet 5 of the air seal device of the first and second embodiments, so that the amount of solids such as dust becomes large.
When buried in solids such as garbage, the bottom outlet 5
It is also a preferable embodiment to be able to shut off the air blown from the air.

[0021]

According to the present invention, a continuous curved airflow trajectory is formed between the air outlet on the side wall and the suction port on the upper wall, avoiding the conveyed object. As a result, the inside of the facility having the opening for carrying (inlet and out) is almost stably shut off from the atmosphere.

For this reason, in the case of a waste crusher, for example, the amount of inert gas sent into the machine to prevent explosion in the machine can be greatly reduced, and energy and resources can be saved. Achieved.

Further, since no mechanical shut-off device is used, a stable effect can be obtained irrespective of the size, shape, and properties of solids such as dust, and wear can be avoided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of an air sealing device for an opening of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is an explanatory diagram of the diameter of the air outlet when a large number of air outlets are provided.

FIG. 4 is an explanatory view of the shape of the air outlet when one air outlet is provided.

FIG. 5 is a cross-sectional view of an outlet portion of another embodiment of the air sealing device for an opening according to the present invention.

FIG. 6 is an explanatory view of a preferred embodiment of the outlet of the present invention.

FIG. 7 is an explanatory diagram of one mode of a conventional shut-off device for a closed atmosphere.

Continuation of the front page (72) Inventor Takenobu Mochida 12 Nishiki-cho, Naka-ku, Yokohama-shi, Kanagawa Pref. -34146 (JP, B1) Jikken 39-20495 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 9/00

Claims (1)

(57) [Claims] 1. An apparatus in which an object to be processed flows in and out by a conveying means, and the object to be processed is processed in an internal closed atmosphere. A pair of side walls and an upper surface wall for covering the conveying means, and one or more air outlets for discharging air in a horizontal direction substantially perpendicular to the moving direction of the conveying means; The air seal device for an opening portion of a closed atmosphere processing device, characterized in that the opening is formed larger as it approaches the lower position, and a suction port for vertically sucking the discharged air is provided on the upper surface wall.