SU524942A1

SU524942A1 - Device for removing gas and dust emissions for arc welding torches

Info

Publication number: SU524942A1
Application number: SU2031054A
Authority: SU
Inventors: Эммануил Иосифович Штеренберг; Игорь Николаевич Щербатюк
Priority date: 1974-06-06
Filing date: 1974-06-06
Publication date: 1976-08-15

Description

II

Изобретение относитс , щ еимущественно :к области сварочного производства дл удалени образующихс в щэоцессе обработки гаэовыделений.The invention relates primarily to the field of welding production for the removal of gas excretions formed in the process.

Известно устройство дл удалени гаэс пьшеБыделений дл дуговых сварочных гор&:лок , содержащее систему отсоса, всасьтакхций патрубок, выполненный в виде двух усеченных конусов, образующих между собой полость, и диффузор, установленный со стороны больших оснований конусов, выход котс зого соединен с системой отсоса.A device is known for removing gas turbulence for arc-welding mountains &; lock containing a suction system; .

Производительность магистрали дл транспортировани газа зависит от произведени V S 1 где V - скорость потока газа в мамистрали , а S - поперечное сечение магистрали . Скорость в конечном итоге определ етс величиной избыточного статического давлени , развиваемого на входе в магистраль. В то же врем насосы всасывани не могут создать разрежение больше одной атмосферы. Поэтому скорость потока воздуха внутри магистрали не может быть как угодно большой. Следовательно, з еличивать проиаводительiHOCTb системы отсоса можно лишь за счет The capacity of the gas transmission pipeline depends on the product V S 1 where V is the gas flow rate in the main line and S is the cross section of the line. The speed is ultimately determined by the magnitude of the excess static pressure developed at the entrance to the line. At the same time, suction pumps cannot create a vacuum of more than one atmosphere. Therefore, the flow rate of air inside the line can not be arbitrarily large. Consequently, it is possible to make the extractor system of the suction system gel only

увеличени поперечного сечечи магистрали и входного патрубка насоса, что, в свою очередь, приводит к увеличению размеров констр) системы отсоса. Кроме того, поскольку горелка какого - либо определен|ного типа обладает определенным расходом газа через выходное сопло, то при измеке|нии типа горелки измен етс также и расхо воздуха в магистрали отсоса. Поэтому дл использовани одной и той же систем дл 1горелок различного типа примен ют системы ; отсоса с заведомо большой производи-ге ь:ностью , а следовательно, большими размерами поперечного сечени транспортных ма гистралей , что позвол ет эксш1уати15овать их с запасом . Но все это приводит к н&i оправданному увеличению габаритных ра. |меров всей системы отсоса,an increase in the cross section of the line and the pump inlet, which, in turn, leads to an increase in the size of the suction system. In addition, since a burner of a certain type has a certain gas flow rate through the outlet nozzle, when measuring the type of burner, the flow rate of air in the suction line also changes. Therefore, systems are used to use the same systems for different types of burners; suction with a deliberately large production: and, consequently, large cross-sectional sizes of transport routes, which allows them to be exported with a stock. But all this leads to a & i justified increase in overall size. | measures the entire suction system,

Menfy изобретени - повышение производительности устройства при уменьшении га:баритных размеров системы отсоса.Menfy invention - improving the performance of the device while reducing hectares: the barite size of the suction system.

Claims

This is ensured by the fact that i the proposed device is equipped with an ejector: rum, shaped like a hollow torus - (dorsal, with a diffuser, hammed between the cones. air, the value of which depends on the speed and flow rate of air through the additional outlet nozzle. The presence of an overpressure at the entrance to the transport line, in turn, increases the air velocity and thereby increase the transport magistrapi performance to a desired value without increasing its cross-section. Calculations confirmed the feasibility predlagaemo1Ch) ustroystESh and its positive features. FIG. 1 shows the proposed device, a general view; in fig. 2 shows the arrow A in FIG. 1. The device contains a burner 1 with an output nozzle 2 and a nozzle 3, the nozzle consists of two cones 4 and 5, cut at the tops. The outer cone has holes, Cone; 4 and 5 are inserted one into the other and welded around the circumferences of the smaller bases. With equal step along the circumferences of the large bases, the blades 6 with the internal longitudinal channels 7 are welded to the cones 4. The blades are oriented along the forming cones. Between the blades, the guides of a single curvature of 8 Jiocity 8 are attached to them, and they are perpendicular to the longitudinal faces of the blades. A cone 9 is welded to the ends of the blades so that a circular window is formed between the large base of the caucus 4 and the smaller base of the cone 9. Four brackets 10 with threads, screwed into screws 11, are equally spaced around the surface of the cone 9 that has been painted on the burner. Screws 11 are screwed into the larger base of the cone 4 and smaller than the base of the cone 9 and the rings Ki 12 and 13 are appropriate. To the rings of the grease, rubber cuffs 14. In the inner cavity of the pipe formed by the conos 5 and 9, at the wide end, rings 15 are installed, forming a diffuser. - Evenly around the circumference, the rings 1 are provided with grooves designed to fit parts of the ends of the blades 6, but in such a way that the longitudinal channels of the 7 blades, going from the cavity between the cones 4 and 5 to the narrow part of the diffuser, were set open. The burner also contains an ejector made in the void of the empty torus 16 with a hole. With the aid of brackets 17, the ejector is attached to the burner housing in its upper part. A fitting 18 is inserted into the hole of the torus to supply compressed air to the inside of the nozzle. A circular slit 20 is located around the circumference of the torus between the shells 19, designed to enter the air jet from the ejector slit into the diffuser. The stubs are fastened to the nozzle with screws 11, which abut the surface of one of the ribs and seal the joints between them and the rubber j and cuffs 14. To remove the nipple from the nozzle, the screws 11 must be turned and moved down. The device works as follows. Air from the slot 2O enters the guide surfaces 8, from where it is directed to the diffuser. In the diffuser, the speed of the air jet increases, and the pressure inside the jet decreases. The resultant vacuum passes from the cavity between the cones 4 and 5. Due to the vacuum, the contaminated air is sucked in through the holes through the channels of the blades 7 to wait for the patterned space where the air coming out of the ejector is picked up and the air is carried at high speed to the upper part of the room. In the upper part, the placed jet is picked up by exhaust fans and is located outside the room. Claims device for removing gas-dust gaps for arc welding torches, containing a suction system, a suction nozzle, filled in the form of two truncated cones, an interstitial cavity, and a diffuser installed on the side of large bases of the cones, the output of which is connected to the suction system is about one l and often, in order to improve the performance of the device while reducing the dimensions of the suction system, the device is equipped with an ejector made in the form of a hollow torus with a hole that communicates With a diffuser installed between the cones.

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