CN2149557Y

CN2149557Y - Novel structure Venturi gas nozzle

Info

Publication number: CN2149557Y
Application number: CN 93200981
Authority: CN
Inventors: 陈木荣
Original assignee: CHEN MORONG 9CN)
Current assignee: CHEN MORONG 9CN)
Priority date: 1993-01-21
Filing date: 1993-01-21
Publication date: 1993-12-15
Anticipated expiration: 2003-01-21

Abstract

The utility model relates to a new structure of a Venturi tube used for ceramics and gas furnaces, comprising a burner body, a gas conduit nozzle and an annular sleeve. The gas conduit nozzle can be screwed into the center of the burner sleeve, with the screw connection of the annular sleeve and the gas conduit nozzle, the air can enter from a plurality of air inlet bores on the lower end disc of the burner. Through air guide bores on the annular sleeve, the air can mix with the gas which is ejected from the gas conduit nozzle, so the gas with correct mixing ratio of the two can be got. Therefore, the utility model can accomplish perfect combustion, which is a combustion apparatus with high security.

Description

Novel structure Venturi gas nozzle

The utility model relates to a kind of new construction of venturi tube jet for gas, can be adopted by various ceramic industrys and gas burner.

Nowadays, all adopted burner during various ceramic industry firing ceramics, and use amount is considerable huge.Burner is not only as the assembly of indispensable burner, one of key factor when also being firing ceramics simultaneously.Yet the burner Chang Yinqi air in now general the use is improper and cause many inconvenience with the coal gas mixed proportion, and the while, burner body also used the air conditioning ring, causes many defectives: be easy to generate turbulent flow on its structural design; Gas pressure is low, and air is difficult for the some coal gas for a long time; When regulating air and coal gas ratio, mix undesiredly will produce back-fire; Flame-out easily, or else note causing kiln blast, poor stability; Must note at any time during operation observing, labour intensity is big, the time-consuming merit of taking when adjusting gas pressure.

The purpose of this utility model provides a kind of new construction that can make the correct burner nozzle of air and coal gas mixed proportion.

The utility model is achieved in that in burner body lower end disc face central authorities by the gas-pipe line nozzle that is threaded, and link at gas-pipe line upper end of nozzle spiral shell and to connect an annular air guide sleeve with air guide effect, utilize the acceleration of the pressure gas injection in gas rising and the gas-pipe line, making air to guide through being located at the air guide hole on the annular air guide sleeve enters in the mixing chamber, form correct mixed proportion with coal gas, thereby solve the defective of in the past adjusting coal gas and air by adjuster.

The utility model is a kind of new construction that need not use the venturi tube burner nozzle of air regulator, and its advantage is: 1. the air guide sleeve that is provided with the air guide effect can make air and coal gas reach correct mixed proportion and realize completing combustion.2. the coal gas that can fully burn, and then save cost, reduce manpower.3. do not need often to adjust the mixed proportion of air and coal gas, thereby increase work efficiency.4. security is good, does not have to be burned to a half flame-out misgivings of generation suddenly.5 when coal gas pressurizes, and annular air guide sleeve pipe nature direct air amount increases, and it is practical, and is safe.6. operation is installed simple and easy, easy to use.7. be provided with annular air guide sleeve, can prevent that air from producing turbulent flow in burner.8. can be applicable to industrial furnace or house coal steam stove, adapt to wide.9. can cooperate the installation computer to control automatically.10. needn't on dutyly guard when operating, the working time can prolong.11. coal gas and Air mixing are in perspective, can not produce back-fire.

Below in conjunction with accompanying drawing, introduce structure of the present utility model in detail.

Figure 1A and 1B are respectively outward appearance front view of the present utility model and upward view.

Fig. 2 is the cutaway view of the utility model internal structure.

Fig. 3 A, Fig. 3 B and Fig. 3 C be the cutaway view and the upward view of the utility model air guide operation principle schematic diagram, annular air guide sleeve respectively.

Shown in all figure of Fig. 1, Fig. 2, the utility model includes the burner body 1 that a profile is the long cylinder notch cuttype, this burner body 1 lower end is screwed into the gas-pipe line nozzle 2 of a stay bolt shape by screw thread, these gas-pipe line nozzle 2 lower end fits connect gas pipe 3, the other end of gas pipe 3 then is connected to coal gas gas tank or gas piping, as transmission pipeline.On the lower end of burner body 1 bottom disc face 4, be provided with equidistant ringwise a plurality of air inlet circular holes 5 of arranging, enter for air.The gas-pipe line nozzle 2(that profile is the stay bolt shape consults Fig. 2) by in the screwed hole 6 that is threaded in the burner body lower end, and, the inside of gas-pipe line nozzle 2 is hollow form, can give gas by, and be provided with a nut 7 in the lower end of this catheter nozzle 2, so that fastening gas pipe 3.Have an external form to be the annular air guide sleeve 9 that overlaps tubular by spiral marking connection above this catheter nozzle, the inside bottom surface of this sleeve 9 is provided with ringwise the equidistant air guide hole of arranging 10 and introduces thus for air.Its central authorities are provided with a screwed hole 8, and this annular air sleeve 9 is installed in gas-pipe line upper end of nozzle place, when air mixes with coal gas, helps rectified action, unlikelyly cause turbulent flow and stop working, and therefore, the utility model is difficult for flame-out, and security is high.

Consult the utility model operation principle shown in Figure 3, when coal gas as shown by arrow A, from gas pipe 3(figure, omitting not shown) venthole 11 that enters gas-pipe line nozzle 2 tops in the pipe can produce gas impulse force upwards, because the impulse force of coal gas and then guiding air (as shown by arrow B) enter mixed zone 12 via the air guide hole 10 of ventilation circular hole 5 on the disc face 4 and annular air guide sleeve 9, form the mist of primary air and coal gas.Owing to ring duct sleeve 9 is screwed into the upper end that is positioned at gas-pipe line nozzle 2 by screw thread, therefore, when air and coal gas mist in the sleeve ring-side wall up before so that second mixed zone 13 that enters 1 li upper end of burner body do for the second time that air mix with the coal gas supercharging, thereby can access gaseous mixture in perspective when making burning, incorrect and cause the disadvantage of wasting coal gas and usually stopping working with regard to improving traditional coal gas and air mixed proportion like this.Simultaneously, air also produces pressurization with the guiding of a coal gas and enters in the annular air guide sleeve 9 when the coal gas supercharging, air and coal gas are mixed fully and increases burner security in the use.

Claims

1, a kind of new construction of venturi tube jet for gas, include a burner body that is the long cylinder notch cuttype, this burner body lower end disc face is provided with the equidistant a plurality of air inlet circular holes arranged of annular, its central authorities are provided with a screwed hole, be screwed into the gas-pipe line nozzle of a stay bolt shape in this screwed hole by screw thread, it is characterized in that: the upper end of gas-pipe line nozzle has an external form to be the annular air guide sleeve that overlaps tubular by spiral marking connection, and the inside bottom surface of this annular air guide sleeve is provided with the equidistant ringwise air guide hole of arranging.