CN2758256Y - Low pressure air blast burning device of glass vessel rim drying - Google Patents

Abstract

The utility model relates to a low pressure air blast combusting device of a glass vessel melting edge, which comprises a combustor, a mixer, adjustable valves and switch valves, which are connected through pipelines, wherein the switch valves are respectively arranged on a fuel gas inlet and a combustion air inlet end, and the adjustable valves are respectively arranged between the mixer and the switch valves. The outlet end of the mixer is connected with the combustor. The utility model is characterized in that the combustor is a flat body, and one end of the combustor, which is connected with an outlet of the mixer, is an air inlet which is communicated with a mixing cavity body arranged; the mixing cavity body is triangular, and the apical angle position is provided with a main air passage; both end surfaces which are positioned at both sides of the main air passage and are vertical to the triangular mixing cavity body are respectively provided with branch air passages, and the outlet ends of the branch air passages are parallel to the main air passage; the main air passage and the branch air passages are respectively provided with a plurality of quenching holes, and the outlet end surfaces of the quenching holes of the main air passage and the quenching holes of the branch air passages form main nozzles and branch nozzles. The unique structural design of the combustor causes fuel gas to sufficiently combust, the energy can be saved, and the utility model is favorable to the forming and the polishing of a glass vessel melting edge.

Description

Low pressure blast burning device for glass utencil drying mouth

Technical field

The utility model relates to the glassware manufacturing installation, particularly a kind of low pressure blast burning device for glass utencil drying mouth.

Background technology

The baking mouthful used fuel of firing system generally is geseous fuel, i.e. Sweet natural gas, coal gas and liquefied petroleum gas (LPG) etc.Combustion-supporting gas has two kinds of pressurized air and oxygen.Domestic glassware baking mouth and surface finish are general many with compressed air combustion-supporting.The subject matter that exists is at present:

1, the firing system design is unreasonable, and before the burning, air and combustion gas be premix not, and air-fuel ratio is unreasonable, undercompounding, and the effective rate of utilization of the energy is low, causes energy consumption huge.

2, an existing baking mouthful burner is the structure of nozzle of similar common welding gun, nozzle is circular, combustion instability, be to lean against combustion gas main flow place hot metal of placement to light combustible gas as ignition source, ignition difficulties, heating is as the metal of ignition source earlier, tempering takes place easily and put out and cause burning insufficient, flame coverage and irrational distribution, not only the heat output loss is very big, and does not have the ideal polishing action.

3, because the flame loss is many, the envrionment temperature around the type edge-melting machine is higher, workman's labor condition extreme difference, and also also influential to the use properties and the life-span of machine.

4, noise is bigger.

Along with the development of technology, a baking mouthful firing system has now adopted mixing tank that air is mixed and afterfire earlier with combustion gas both at home and abroad, and nozzle arrangements is also progressively improving, to cut down the consumption of energy; But effect is still not ideal enough, and above-mentioned problem still becomes the constantly improved problem of research of this field.

The utility model content

The purpose of this utility model is to overcome above-mentioned weak point, provides a kind of and makes the sufficient burner structure of gaseous combustion, is beneficial to the high-quality low pressure blast burning device for glass utencil drying mouth of finishing moulding of glassware rim of a cup and polishing.

The technical scheme that the utility model adopted is for achieving the above object: a kind of low pressure blast burning device for glass utencil drying mouth, comprise burner, mixing tank, variable valve and switch-valve, constitute by the pipeline connection, switch-valve is located at fuel gas inlet and combustion air inlet end respectively, variable valve is located at respectively between mixing tank and the switch-valve, and the exit end of mixing tank connects burner; It is characterized in that burner is a flat body, an end that links to each other with the outlet of mixing tank is an inlet mouth, and inlet mouth communicates with the mixing chamber that is provided with; Mixing chamber is triangular shape, and the drift angle place is provided with main airway; Be positioned at the both sides of main airway, the both ends of the surface of vertical triangular shape mixing chamber are respectively equipped with branch airway, and the branch airway exit end is parallel with main airway; Main airway and branch airway are respectively equipped with some quenching holes, and the exit end face of main airway quenching hole and branch airway quenching hole constitutes a cap jet and a gas blowout mouth respectively.

Described mixing tank can connect 1～3 burner respectively to be arranged along the throughput direction segmentation, and height staggers.

The utility model has the advantages that: in the design of burner, utilize jet theory, unburned gas is divided into master, an air-flow of high speed difference in the same way, utilize the flame of the main air stream of the flame stabilization high speed difference that props up air-flow.Its reasonable in design, combustion air and combustion gas be respectively by combustion air inlet and fuel gas inlet, and the adjusting by variable valve enters mixing tank and fully burns at the burner place behind thorough mixing.Main air stream penetrates by the very big slit of the illustrated length and the ratio of width.This jet makes the flame space layout be flats, it is violent to have firepower, concentrate on the vessel oral area, the processing requirement that meets glassware fusing of margin and flame polish firing system, the creationary spatial distribution of improving burner flame, greatly reduce energy consumption, effectively prevent to put out and tempering, make flame stable.The burner special structure design is the quenching hole that is provided with main airway and branch airway and corresponding two kinds of different diameters, has effectively avoided the tempered generation, makes fuel gas buring more abundant, saves energy, is beneficial to the moulding and the polishing of glassware rim of a cup.

Description of drawings

Fig. 1 is the utility model one-piece construction synoptic diagram;

Fig. 2 is the utility model burner structure cross-sectional schematic.

Among the figure: 1 burner, 2 mixing tanks, 3 variable valve, 4 fuel gas inlet, 5 switch-valves, 6 combustion air inlet, 7 inlet mouths, 8 main airways, 9 main airway quenching holes, 10 branch airway, 11 branch airway quenching holes, 12 cap jets, 13 gas blowout mouths, 14 mixing chambers.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, details are as follows to embodiment, structure, feature that foundation the utility model provides:

Referring to Fig. 1, Fig. 2, the utility model comprises burner 1, mixing tank 2, variable valve 3 and switch-valve 5, constitute by the pipeline connection, switch-valve 5 is located at fuel gas inlet 4 and combustion air inlet 6 ends respectively, variable valve 3 is located at respectively between mixing tank 2 and the switch-valve 5, and the exit end of mixing tank 2 connects burner 1; It is characterized in that burner 1 is flat body, an end that links to each other with the outlet of mixing tank 2 is an inlet mouth 7, and inlet mouth 7 communicates with the mixing chamber 14 that is provided with; Mixing chamber 14 is triangular shape, and the drift angle place is provided with main airway 8; Be positioned at the both sides of main airway 8, the both ends of the surface of vertical triangular shape mixing chamber 14 are respectively equipped with branch airway 10, and branch airway 10 exit end are parallel with main airway 8; Main airway 8 and branch airway 10 are respectively equipped with some quenching holes 9,11, and the exit end face of main airway quenching hole 9 and branch airway quenching hole 11 constitutes a cap jet 12 and a gas blowout mouth 13 respectively.

Described mixing tank 2 can connect plural burner 1 respectively to be arranged along the throughput direction segmentation, and height staggers.Not only finish flame baking mouth but also can realize surface finish so that make by baking mouthful glassware.

Main airway quenching hole 9 is greater than branch airway quenching hole 11.

The utility model fusing of margin and flame polish firing system adopt gas blower to replace air compressor, promptly replace the high pressure combustion air with the low pressure combustion air.Before burning,, after making combustion air and fuel mixing rationally, fully, send into burner combustion more earlier through mixing tank.A plurality of burners are arranged along the throughput direction segmentation, can make each ones of upper, middle and lower of goods all obtain the flame polish that suits and the effect of fusing of margin in baking burning process.

This combustion unit meets the requirement of fusing of margin and flame polish firing system technology, is convenient to igniting, regulates operation and operation.Guarantee flameholding and continuously, the phenomenon such as tempering does not take place, put out that is in operation with assurance equipment and personnel safety, is moved easy.The high pollution that also reduces environment of efficiency of combustion.

Referring to Fig. 2, its main air stream penetrates by the very big slit of the illustrated length and the ratio of width.This jet makes the flame space layout be flats, and it is violent to have a firepower, concentrates on the vessel oral area, meets the processing requirement of glassware fusing of margin and flame polish firing system, and the creationary spatial distribution of improving burner flame greatly reduces energy consumption.For preventing that tempering from taking place, the utility model has designed several apertures on the passage between burner and the mixing tank, allows fresh mixed airflow and the back fire flame that may occur must could be propagated through aperture.When flame was propagated in pipe, its velocity of propagation was relevant with the size in aperture, and caliber is more little, and flame propagation velocity is just slow more.This be because, caliber is more little, the frigorimeter area of unit volume is big more, the cooling effect of tube wall is strong more, causes mixture temperature to reduce, chemical reaction velocity is slow more, thereby flame propagation velocity reduces.When caliber was reduced to a certain numerical value, flame can not continue to propagate, and this diameter is called the propagation of flame critical diameter.

According to flame communication theory in pipe, the utility model is a main airway quenching hole about 2mm having designed many diameters on the passage of main air stream, has avoided the tempered generation effectively, has guaranteed the safe combustion of equipment.

Because what use on the engineering mostly is turbulent flame, gas velocity and Re number are all bigger, thereby must adopt corresponding steady flame method to avoid putting out, take off the fire generation.In recent years, according to external relevant Theory of Combustion bibliographical information, can near the flammable main air stream of the higher premix of flow velocity, place a lower stable small-sized ignition flame of flow velocity and also claim (flame on duty), make main air stream be subjected to that flammule is continual to be lighted, and form big, that gas velocity is high, stable main flame.The present invention has adopted this kind method to avoid taking off fire, promptly near the main air stream exit of burner, stable flame hole is set, the inflammable gas (flow velocity is lower) that penetrates when the air flow outlet from booster flame (flame on duty) forms stable booster flame, lights the inflammable mixture of flow at high speed main air stream with it.The jet of shallow bid in the same way that big velocity contrast is arranged with main air stream is as booster flame, and the effect of entrainmenting that utilizes high velocity air to form makes flammule constantly light the stability that main air stream improves flame.

Embodiment:

1, the structure of burner: cap jet is the slit crack;

2, the size of burner: cap jet is wide 1～2mm, long 250mm～500mm slit;

3, prop up the structure of gas blowout mouth: a gas blowout mouth is that small sircle hole and slit crack are formed jointly;

4, prop up the size of gas blowout mouth: the aperture is 1mm～2mm circular hole and wide 1mm～2mm, long 250mm～500mm slit;

5, the positional structure of quenching hole: between burner and mixing tank;

6, the size of quenching hole: main airway quenching hole aperture is made as 2.8mm, and branch airway quenching hole aperture is made as 1mm.

The utility model fully carries out mixing, the injection of combustion gas, makes the examination of flame heat stable, and structure design is rationally distributed, reaches desirable polishing and baking mouthful effect and effectively energy-conservation.

Claims (2)

1, a kind of low pressure blast burning device for glass utencil drying mouth, comprise burner, mixing tank, variable valve and switch-valve, constitute by the pipeline connection, switch-valve is located at fuel gas inlet and combustion air inlet end respectively, variable valve is located at respectively between mixing tank and the switch-valve, and the exit end of mixing tank connects burner; It is characterized in that burner is a flat body, an end that links to each other with the outlet of mixing tank is an inlet mouth, and inlet mouth communicates with the mixing chamber that is provided with; Mixing chamber is triangular shape, and the drift angle place is provided with main airway; Be positioned at the both sides of main airway, the both ends of the surface of vertical triangular shape mixing chamber are respectively equipped with branch airway, and the branch airway exit end is parallel with main airway; Main airway and branch airway are respectively equipped with some quenching holes, and the exit end face of main airway quenching hole and branch airway quenching hole constitutes a cap jet and a gas blowout mouth respectively.

2, low pressure blast burning device for glass utencil drying mouth according to claim 1 it is characterized in that described mixing tank can connect 1～3 burner respectively and arrange along the throughput direction segmentation, and height staggers.

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