CN2909023Y

CN2909023Y - Gas air mixer of industrial furnace

Info

Publication number: CN2909023Y
Application number: CN 200620072712
Authority: CN
Inventors: 肖宇; 金敏; 张坚慧; 赵宝根; 王长中
Original assignee: Wuxi Xinrun Industrial Furnace Co Ltd
Current assignee: Wuxi Xinrun Industrial Furnace Co Ltd
Priority date: 2006-04-24
Filing date: 2006-04-24
Publication date: 2007-06-06
Anticipated expiration: 2016-04-24

Abstract

A mixer of air and fuel gas for industrial furnace comprises a fuel gas pipe and an air pipe that are all covered by a sealing sleeve. The end of the fuel gas pipe and the air pipe is the air inlet; the other is connected to the mixing pipe of air by a gas input head. Outside of the fuel gas pipe is equipped with an adjustment bushing of gas mixing ratio, which is connected to the air pipe by pin and stud. The opening of the fuel gas inlet will be changed by rotation of the adjustment bushing, so as to change the mixing ratio of the fuel gas and air. The utility model has the advantages of uniform mixing of the fuel gas and air, accurate adjustment and control of the mixing ratio, thereby stable control of combustion of the industrial furnace. The utility model can be widely used in various industrial gas furnaces.

Description

The gas-air blender of industrial furnace

(1) technical field: the utility model belongs to the industrial gas furnace field, is specifically related to its combustion gas and Air mixing device.

(2) background technology: combustion gas must mix by a certain percentage with air, could be in industrial furnace active combustion.In the prior art, burn in the combustion chamber that combustion gas and air is fed by a certain percentage industrial furnace respectively, and it is inhomogeneous that its shortcoming is that both mix, and mixed proportion is difficult to accurate control, makes the validity of fuel gas buring reduce.

(3) summary of the invention: the objective of the invention is to overcome in the above-mentioned prior art combustion gas and mix inhomogeneously with air, mixed proportion is difficult to the accurately shortcoming of control, and a kind of gas-air blender of industrial furnace is provided.Its technical scheme is as follows:

Gas Pipe and air hose that it has the sealing fit to install, one end of Gas Pipe and air hose is the air intlet end, the tube wall of Gas Pipe has the fuel gas inlet end, the other end of Gas Pipe is connected with the inlet end of gas mixing tube, the inlet end of gas mixing tube is installed the gas input head, described gas input head communicates with the gas outlet end of Gas Pipe and air hose respectively, and the other end of gas mixing tube is the gaseous mixture output; In the periphery of Gas Pipe by screw connection gas mixture ratio example regulating sleeve, internal threaded regions at gas mixture ratio example regulating sleeve has no thread groove along the inwall direction, in the pipe wall body of Gas Pipe, have microscler through hole vertically, pass described microscler through hole device pin, one end of pin is connected with described air hose, and the other end places in the no thread groove of described gas mixture ratio example regulating sleeve inwall.The port of export of air hose stretches in the described gas input head.One end of described gas mixture ratio example regulating sleeve is equipped with dial, is carved with datum line at the Gas Pipe outer wall.In Gas Pipe and gas mixing tube tube wall device the pressure measurement plug screw is arranged.

The utility model is provided with Gas Pipe, air hose, gas mixing tube and gas mixture ratio example regulating sleeve, and combustion gas is entered before the industrial furnace, evenly mixes with air in gas input head and gas mixing tube earlier, enters the industrial furnace burning again.And by rotation gas mixture ratio example regulating sleeve, and peruse the dial that is installed on it, can accurately regulate and control combustion gas and Air mixing ratio, thereby improve the validity of fuel gas buring.

(4) description of drawings:

Fig. 1 is a structure cut-away view of the present utility model;

Fig. 2 is the enlarged drawing of position I among Fig. 1;

Fig. 3 is half cut-away view of gas mixture ratio example regulating sleeve in the utility model, and ratio is amplified.

(5) specific embodiment:

See Fig. 1, the utility model has Gas Pipe 1 and the air hose of installing by sealing ring 11 sealing fits 7, and an end of Gas Pipe 1 and air 7 is the entrance point of air K, and the entrance point of combustion gas R is arranged on the tube wall of Gas Pipe 1.The other end of Gas Pipe 1 is connected with the periphery interference fit of gas mixing tube 9 inlet ends.The inlet end interference fit of gas mixing tube 9 is installed gas input head 8, and gas input head 8 is connected with the gas outlet end of Gas Pipe 1 and air hose 7 respectively, and combustion gas R and air K enter successively respectively in gas input head 8 and the gas mixing tube 9 and mix.The other end of gas mixing tube 9 is the output of gas-air gaseous mixture.

See Fig. 1 in the periphery of Gas Pipe 1 the gas mixture ratio example regulating sleeve 3 by screw connection combustion gas and air.See Fig. 3, the internal threaded regions 16 of gas mixture ratio example regulating sleeve 3 along the inwall direction promptly (being the inwall circumferencial direction) have no thread groove 15.See Fig. 1, have microscler through hole 18 vertically in the pipe wall body of Gas Pipe 1, pass microscler through hole 18 device pins 4, an end of pin 4 is fixedlyed connected with air hose 7, and the other end of pin 4 places in the no thread groove 15.See Fig. 3, corresponding pin 4 has reach through hole 17 on the wall body of regulating sleeve 3 in thread groove 15, as oil filler point.See Fig. 1, Fig. 2, device blind nut 13 on the oil filler point 17, device ball 12 and spring 14 in the blind nut 13 are by 17 pairs of pin 4 apply oils of oil filler point.

See Fig. 1, the outlet side of air hose 7 is taper, and the gas outlet end of the vertex of a cone stretches in the gas input head 8, between the space form the valve of blast tube.End at gas mixture ratio example regulating sleeve 3 connects dial 6, is carved with the datum line of reading scale value at the outer wall of Gas Pipe 1.Device has pressure measurement plug screw 10 on Gas Pipe 1 and gas mixing tube 9, is thus connected the pressure that pressure instrumentation can be measured combustion gas and gaseous mixture.

During the utility model work, combustion gas R and air K enter mixing air pressure input head 8 and the mixing tube 9 from air hose 7 and Gas Pipe 1 respectively, rotate gas mixture ratio example regulating sleeve 3 forward or backward, no thread groove 15 promotion pins 4 by its inwall move forward and backward in microscler through hole 18, drive air hose 7 and move forward or backward.Because the outlet side of air hose 7 is taper, the position of stretching into gas input cover 8 along with the gas vent termination of the vertex of a cone changes, and shown in chain-dotted line among Fig. 1, the valve size that makes combustion gas enter gas input cover 8 changes thereupon, the gas quantity that feeds changes, thereby regulates the mixed proportion of gas-air.In the practical application, (or claim zero adjuster by the pressurizer that is connected in fuel gas inlet and mixed gas outlet, be the commercial goods), the pressure of combustion gas in the Gas Pipe is equated with the pressure of mist output, be in poised state, burning adds heat request according to industrial furnace, by rotary regulating sleeve 3, combustion gas is mixed in suitable ratio with air, then by

trip bolt

2 and 5 respectively with regulating sleeve 3 and dial 6 fastening location, so make combustion gas and air be in the state that mixes in stable and accurate ratio, evenly mixing in mixing tube 9, import the industrial furnace burning again, make the fired state in the industrial furnace stable, accurately, controlled.

Claims

1, the gas-air blender of industrial furnace, be characterised in that Gas Pipe and air hose that it has the sealing fit to install, one end of Gas Pipe and air hose is the air intlet end, the tube wall of Gas Pipe has the fuel gas inlet end, the other end of Gas Pipe is connected with the inlet end of gas mixing tube, the inlet end of gas mixing tube is installed the gas input head, and described gas input head communicates with the gas outlet end of Gas Pipe and air hose respectively, and the other end of gas mixing tube is the gaseous mixture output; In the periphery of Gas Pipe by screw connection gas mixture ratio example regulating sleeve, internal threaded regions at gas mixture ratio example regulating sleeve has no thread groove along the inwall direction, in the pipe wall body of Gas Pipe, have microscler through hole vertically, pass described microscler through hole device pin, one end of pin is connected with described air hose, and the other end places in the no thread groove of described gas mixture ratio example regulating sleeve inwall.

2, by the gas-air blender of the described industrial furnace of claim 1, it is characterized in that the port of export of air hose stretches in the described gas input head.

3, by the gas-air blender of the described industrial furnace of claim 1, it is characterized in that dial being installed at an end of described gas mixture ratio example regulating sleeve, be carved with datum line at the Gas Pipe outer wall.

4, by the gas-air blender of the described industrial furnace of claim 1, being characterised in that in Gas Pipe and gas mixing tube tube wall device has the pressure measurement plug screw.