JPH0154158B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for treating flue gas in a plasma cutting machine, and in particular, it is a simple method for treating flue gas such as dust fumes and harmful gases generated during plasma cutting. The present invention relates to a method for treating flue gas in a plasma cutting machine that can be treated by a method.

<Conventional technology> Conventionally, for example, Japanese Patent Publication No. 10684/1973 and Japanese Patent Publication No. 52-
Publication No. 32343, Publication No. 52-32853, Japanese Unexamined Patent Publication No. 1973-
Publication number 41947, Publication number 52-43709, Publication number 53-
As shown in Publication No. 5080, etc., the cutting surface is divided into small rooms by a large number of partition plates, and along the running rails of the plasma cutting machine installed on both sides of this cutting surface, there are approximately two sections. A main duct with the same length that can be opened and closed is installed, and at the end of the main duct there is a suction pump that can send the dust fume, harmful gases, etc. collected by the main duct from plasma cutting to the dust collector. A smoke exhaust treatment method was developed to install a

<Problems to be Solved by the Invention> However, in the conventional method described above, a main duct of approximately the same length as the running rails of the plasma cutting machine is installed on both sides of the cutting surface plate. This requires extremely large equipment and a large site, resulting in huge equipment costs.Furthermore, the opening and closing of the main duct requires a complicated mechanism, which increases costs, and generates dust fumes and harmful gases due to plasma cutting. There were problems in that it was difficult and unreliable to collect the liquid in the main duct without scattering it to the surrounding area.

The method according to the present invention relates to a completely new technique developed in view of these conventional problems.

<Means for Solving the Problems> The present invention has a plasma cutting torch running on a machine body running on two parallel rails in a direction perpendicular to the running direction of the machine body, and a workpiece placed on a cutting surface plate. In a method for cutting a workpiece and treating exhaust smoke emitted by this cutting, a space below the cutting surface capable of supporting the workpiece is arranged in parallel in a lateral direction orthogonal to the rail. Several spaces are divided into several spaces by several partition plates, and a suction hood capable of sucking the smoke emitted from each partitioned space by plasma cutting is slid to the side of the partitioned space as the aircraft moves. a dust collector capable of processing exhaust smoke is mounted on a part of the fuselage, and the dust collector and the suction hood are connected via a smoke exhaust duct;
A workpiece on a cutting surface plate is cut while a plasma cutting torch is running, and exhaust fumes emitted due to this plasma cutting are sucked by the suction hood running together with the plasma cutting torch, and the This is a method for treating exhaust smoke in a plasma cutting machine, characterized in that exhaust smoke sucked in by a suction hood is treated by the dust collector on the machine body.

<Function> As described above, in the method according to the present invention, a suction hood is provided on the side of the plasma cutting machine that can suck the exhaust smoke from each partitioned space discharged by plasma cutting. By integrally moving the plasma cutting torch and the suction hood, the exhaust smoke emitted by plasma cutting can be reliably sucked in at an optimal position without escaping.

In addition, in the present invention, a dust collector capable of processing exhaust smoke is directly mounted on a part of the cutting machine body, and the dust collector and the suction hood are interconnected by a smoke exhaust duct, so that The exhaust smoke collected by the suction hood can be immediately disposed of by the dust collector mounted on the cutting machine.

<Example> To explain an apparatus for carrying out the method of the present invention with reference to figures, in Figs. 1 and 2, 1
The main body of the plasma cutting machine is composed of a saddle 2, a frame 3, etc., and is configured to be able to run vertically on two parallel rails 4, and the frame 3 includes a carriage 6 having a plasma cutting torch 5. Frame 3
It is attached so that it can be slid laterally along. Reference numeral 7 denotes a cutting surface plate capable of supporting a material to be cut 8 such as a steel plate, and the space below this surface plate 7 has several partition plates 9 arranged at regular intervals in the horizontal direction so as to be perpendicular to the rail 4. By arranging them in parallel, several partitioned spaces are constructed.

Next, reference numeral 10 is a dust collector capable of suctioning and processing dust and smoke discharged by plasma cutting, and is fixedly attached to the cutting machine main body 1. Further, a suction hood 12 is attached to this dust collector 10 via a smoke exhaust duct 11, and this hood 1
2 is a cutting machine main body 1 along the side surface of the cutting surface plate 7.
It is constructed so that it can move together with the movement of the main body 1, that is, together with the dust collector 10 and the plasma cutting torch 5 attached to the main body 1.

In the figure, reference numeral 13 denotes a cover plate that closes a gap between the workpiece 8 placed on the cutting surface plate 7 and the hood 12 when the gap occurs.

Although two dust collectors 10 are used in the above embodiment, it is also possible to use only one dust collector.

Next, a specific example of carrying out the method of the present invention using the above-mentioned device will be described. The exhaust gas between the partition plates 9 that is discharged by this plasma cutting is sucked by the suction hood 12 that moves together with the torch 5, and is passed through the smoke exhaust duct 11 to the main body of the cutting machine. This flue gas can be sent to a dust collector 10 provided at 1 and immediately processed by this dust collector 10.

<Effects of the Invention> As described above, the method according to the present invention includes mounting a dust collector for exhaust gas treatment on the cutting machine body, and dividing the lower part of the surface plate into several blocks with partition plates to create a partitioned space. Further, a suction hood is slidably provided on the side of the partitioned space, and the suction hood is connected to the dust collector, and is moved along with the movement of the main body to suction and treat exhaust smoke from each partitioned space. This eliminates the need for the conventional long main duct that spans the entire range of the surface plate, the damper that connects each small room, and its opening/closing control mechanism, thereby significantly reducing the number of incidental equipment and making the equipment more compact. Moreover, it has features such as being able to reliably, efficiently, and immediately process the harmful fumes emitted by plasma cutting without letting them escape.

[Brief explanation of drawings]

FIG. 1 is a simplified plan view of an apparatus for carrying out this method, and FIG. 2 is a perspective view of the main parts thereof. 1 is the cutting machine body, 2 is the saddle, 4 is the rail, 5
1 is a torch, 7 is a cutting surface plate, 9 is a partition plate, 10 is a dust collector, and 12 is a hood.

Claims (1)

[Claims] 1 A plasma cutting torch is run on the machine body running on two parallel rails in a direction perpendicular to the machine body running direction to cut the workpiece placed on the cutting surface plate and discharge it by this cutting. In this method, a space below the cutting surface capable of supporting a workpiece is divided into several spaces by several partition plates arranged in parallel in a horizontal direction perpendicular to the rails. A suction hood capable of sucking the exhaust smoke in each partition space discharged by plasma cutting is attached to the aircraft body so as to be able to slide to the side of the partition space as the aircraft moves. A dust collector capable of processing is mounted on a part of the machine body, and the dust collector and the suction hood are connected via a smoke exhaust duct, and the workpiece on the cutting surface plate is cut while a plasma cutting torch is running, and The exhaust smoke emitted during plasma cutting is sucked by the suction hood that travels together with the plasma cutting torch, and the exhaust smoke sucked by the suction hood is further processed by the dust collector on the machine body. A method for treating flue gas in a plasma cutting machine.