CN2290767Y

CN2290767Y - Multifunctional combination speed variable burner

Info

Publication number: CN2290767Y
Application number: CN 96225791
Authority: CN
Inventors: 张铁夫
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-05
Filing date: 1996-04-05
Publication date: 1998-09-09
Anticipated expiration: 2006-04-05

Abstract

The utility model provides a multifunctional combination speed variable burner, which relates to a burner which is used for rotary kilns in medium-sized and small-sized cement mills. To solve the disadvantages that the existing single air duct burner or the existing three air duct burner regulates flow rate by means of wind, and the thermotechnical system is disturbed when conditions change, such as the condition of coal quality, etc., the utility model is designed. A plurality of air ducts with different calibers are arranged and regulate wind rate and the wind speed of a nozzle under the condition that the shape of flame is not changed when the conditions change, such as the condition of the coal quality, etc. Then, the realization of the thermotechnical system can be ensured.

Description

Combined multifunctional speed-varying burner

The utility model relates to a kind of burner, particularly in, the burner that uses of small cement plant rotary kiln.

At present, many cement plants do not have bituminous coal homogenizing field, ature of coal often changes, the rotary kiln burning process mainly adopts single air channel or three in-duct burners, and these burner nozzle bores are fixed, and transfer flow velocity with wind, run into the ature of coal fluctuation, when kliner coating distortion, ring formation, destroy the primary and secondary air operate as normal, cause the thermal regulation disorder.When ature of coal is relatively poor, want to slow down flow velocity, easily cause anoxic, over-emitting black exhaust as reducing air quantity this moment, if strengthen air quantity, though oxygen supply is good, because flow velocity is fast, black duration and degree of heating is long, clinkering zone front portion temperature is low; When ature of coal is good, when caloric value was high, burning at high temperature was fierce, destroys thermal regulation, use the strong wind speed governing, easily formed eddy current in the kiln, destroyed flame profile, and heat energy descends, and causes easily that also kliner coating is out of shape, ring formation.

The purpose of this utility model is changing, when the required oxygen of flame combustion changes, adjust air quantity and jet velocity by conversion air channel bore in ature of coal of a kind of multiple duct of development, to guarantee the constant combined multifunctional speed-varying burner of flame profile.

The purpose of this utility model is achieved in that has made a plurality of air channels with burner, the bore in each air channel is ascending, one air channel, 1 bore minimum, each air channel bore is increasing then, and they are two air channels 2, three air channels 3, four air channels 4, tendencies road 5, six air channels 6 successively; One air channel can be located at the inside, two air channels are enclosed within the outside in an air channel, and three air channels are enclosed within the outside in two air channels, and cover goes down successively like this, and make one of a ratio of bore (referring to effectively ventilate cross-sectional area) in air channel big; On an air channel, two air channels, three air channels, four air channels, tendencies road, six air channels, establish an air channel coal feeding pipe 7 respectively, two air channel coal feeding pipes 8, three air channel coal feeding pipes 9, four air channel coal feeding pipes 10, tendencies road coal feeding pipe 11, six air channel coal feeding pipes 12, each air channel coal feeding pipe are by circumferential arrangement, feed coal pipe 13, feed the coal pipe and be fixed on the axle 14 establishing above each air channel coal feeding pipe, can rotate with turning cylinder, so that at any time coal is delivered in any air channel coal feeding pipe, the rotation of turning cylinder (14) also can be established motor-driven, also can be manual; Coal mouth seal bootr 15 is established in outside at each air channel coal feeding pipe and hello coal pipe; The air inlet in each air channel all is respectively equipped with air channel control valve 16. each air channel control valve all has valve rod 17. each valve rod of oneself all to have the handle 18. of oneself can certainly not establish handle again, and the switch of each air channel control valve can directly establish spring and electromagnet is controlled respectively: establish air port seal bootr 19. it communicates with blower fan air duct 20 in the outside of these air channel air inlets.

When needs increase the flame combustion oxygen-supplying amount, when the flow velocity of burner nozzle wind was remained unchanged, we can select the bigger air channel of bore for use; On the contrary, when needs reduce oxygen-supplying amount, when the flow velocity of burner nozzle wind is not subtracted, then can select the less air channel of bore for use.

According to above-mentioned design, can increase and decrease the number in air channel as the case may be with needs, it is characterized in that the air channel number can be less than 6, also can be more than 6.

The utility model has the advantages that: under the situation that ature of coal changes, flame combustion requisite oxygen tolerance changes, adjust air quantity and jet velocity by the conversion air channel, thereby reach the purpose that does not change flame profile; Ring formation in kliner coating distortion, kiln destroys primary and secondary air and normally passes through, when flame is obstructed, this burner can change jet velocity by the conversion air channel, flame is passed through by force, and the ring formation that coal dust can be caused is burnt, control kliner coating shape guarantees that thermal regulation is not destroyed.

Accompanying drawing is a generalized section of the present utility model, among the figure: 1 a, air channel; 2, two air channels; 3, three air channels; 4, four air channels; 5, tendencies road; 6 six air channels; 7, an air channel coal feeding pipe; 8, two air channel coal feeding pipes; 9, three air channel coal feeding pipes; 10, four air channel coal feeding pipes; 11, tendencies road coal feeding pipe; 12, six air channel coal feeding pipes; 13, feed the coal pipe; 14, turning cylinder; 15, coal mouth seal bootr; 16, air channel control valve; 17, valve rod; 18, handle; 19, air port seal bootr; 20, blower fan air duct; 21, nozzle.

It is as follows to be with the combined multifunctional speed-varying burner that is manufactured with six air channels that example further specifies now: wind path wall is all done with iron plate in each air channel, and it is barrel-shaped that approximate circle is made in the air channel, one air channel bore minimum, be located at the inside, two wind path walls are enclosed within the outside of a wind path wall, space between two walls i.e. two air channels, and the rest may be inferred, until the wind path wall in six air channels is installed.Except that an air channel was circle, all the other each air channels all were ring-types by this method for making, and were on the cover air channel inside, air channel of outside; Manufacture the air channel control valve of circular and ring-type again according to the size of an air channel and other each wind passage mouth respectively, adorn valve rod respectively on each valve, each valve rod all connects a handle; Establish an air port seal bootr in the outside of air channel air inlet, an end of cover and outmost wind path wall (being six air channel wind path walls here) join and seal, and the other end and blower fan air duct join, and the outer end of each handle all is exposed at the outside of air port seal bootr; Establish coal feeding pipe above each air channel respectively, the top that the coal pipe is located at each air channel coal feeding pipe is fed by circular arrangement in the upper end of six coal feeding pipes, will feed the coal pipe and be fixed on the turning cylinder; For wind is leaked outside from coal feeding pipe, to establish coal mouth seal bootr in the outside of coal feeding pipe and hello coal pipe and seal, the lower end of the turning cylinder on hello the coal pipe is passed coal mouth seal bootr and is exposed, so that manual.

Claims

1, a kind of combined multifunctional speed-varying burner, relate to a kind of burner, particularly, the burner that uses of small cement plant rotary kiln, comprise nozzle [21], blower fan air duct [20], feed coal pipe [13], air channel and coal feeding pipe etc., it is characterized in that burner has a plurality of air channels, the bore in each air channel is ascending, and they are an air channel [1], two air channels [2], three air channels [3], four air channels [4], tendencies road [5], six air channels [6] successively; One air channel can be located at the inside, two air channels are enclosed within the outside in an air channel, and three air channels are enclosed within the outside in two air channels, and cover goes down so successively, and make one of a ratio of bore (referring to effectively ventilate cross-sectional area) in air channel big; All there is the coal feeding pipe [7-12] of oneself in each air channel, and the top of coal feeding pipe is established and fed coal pipe [13], feeds the coal pipe and is fixed on the turning cylinder [14], establishes coal mouth seal bootr [15] in the outside of each air channel coal feeding pipe and hello coal pipe; The air inlet in each air channel all is respectively equipped with air channel control valve [16], each air channel control valve all have oneself valve rod [17], handle [18] that each valve rod all has oneself again, establish air port seal bootr [19] in the outside of these air channel air inlets, it communicates with blower fan air duct [20].

2, according to the said combined multifunctional speed-varying burner of claim 1, it is characterized in that the air channel number can be less than 6, also can be more than 6; The rotation of turning cylinder [14] also can be established motor-driven; The switch of each air channel control valve can directly establish spring and electromagnet is controlled respectively.