CN2266697Y

CN2266697Y - Vertical boiler grate

Info

Publication number: CN2266697Y
Application number: CN 96228242
Authority: CN
Inventors: 董鸿聚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-26
Filing date: 1996-06-26
Publication date: 1997-11-05
Anticipated expiration: 2006-06-26

Abstract

The utility model discloses a vertical boiler grate, which is composed of a boiler grate seat 1, a boiler base 2, a furnace bar 4, a speed reducer 16 and a motor 19. The utility model is characterized in that the furnace bar 4 is a rotatable columnar furnace bar, grooves which are parallel to one another are arranged on the columnar furnace bar, both ends of the columnar furnace bar are fixed on the boiler grate seat through a bearing 3 and a bearing 7, and one end of the columnar furnace bar penetrates through the bearing 7 and is connected with the speed reducer 16 and the motor 19 through a rocking arm 10, a connecting rod 8, a connecting rod 9, a push-pull rod 13, a push-pull rod 21 and an eccentric wheel 14. Compared with the prior art, the utility model can automatically remove slag and the structure of an original fire layer is not changed during slag removal, and boiler output and thermal efficiency can be raised.

Description

The vertical boiler fire grate

The utility model relates to a kind of vertical boiler fire grate, belongs to the fire grate technical field, and the vertical boiler that is suitable for briquet especially uses.

Vertical boiler (comprises vertical steam boiler, hot-water boiler, the unpressurized hot water boiler, boiler etc.) because its cost is low, subsidiary engine is supporting simple, characteristics such as easy to use and being widely adopted, but during bituminous coal, no matter be to adopt the individual layer fire grate, or double-layer inverse burning fire grate, all can't fundamentally solve the problem of its over-emitting black exhaust, cause the dirty combustion of serious air.For this reason, various places (particularly big and medium-sized cities) universal demand vertical boiler must not bituminous coal, and uses moulded coal or other fuel instead.It is huge to use other fuel cost instead, and the general user is difficult to bear.Use moulded coal instead, though solved the problem of over-emitting black exhaust substantially, there are the following problems.One, the moulded coal afterburnt, the overwhelming majority is not broken, and its shape and size have no significant change, and still have certain intensity, and it is very difficult wanting to allow it spill from the bottom.Two, moulded coal has good ventilation condition, does not need to poke fire.The ignition temperature height that needs during the moulded coal burning, and be upwards to burn gradually from the bottom of coal briquette layer, it can be divided into bottom after-flame layer by the degree of burning, the middle part is at combustion layer, top preliminary heating zone.If remove the slag ball on top, that just need push slag ball layer top aside is firing layer and preliminary heating zone, destroys its normal burning layering, makes burning condition be subjected to great destruction, after the slag ball is removed, can not recover original layering again, a part of preheating coal briquette falls into the bottom and is difficult to burning, causes the waste of coal, simultaneously, ignition temperature reduces significantly, can not recover normal in the short time, has greatly influenced boiler output and boiler thermal output.Wait to recover normal combustion soon afterwards, need again to remove the gred once more, and also very difficult grasp of time, labour intensity is big.Therefore, after existing vertical boiler is made fuel with moulded coal, just solved environmental issue, and boiler output has been had negative interaction, do not improved the thermal efficiency of boiler preferably, and strengthened stoker person's labour intensity.

The purpose of this utility model is, a kind of mechanical deslagging is provided, and both reduced stoker person's working condition, do not destroy the burning layering again, can also improve the vertical boiler fire grate of the boiler output and the thermal efficiency.

The purpose of this utility model reaches by the following technical programs.This vertical boiler fire grate by fire-grating seat 1, is positioned at the boiler foundation 2 of fire-grating seat upper surface, is positioned at the fire bars 4 on the fire-grating seat, and the motor 19 and the reductor 16 that are positioned at the fire-grating seat side constitute.Its special character is, fire bars 4 is rotating column fire bars, establish two grooves that are parallel to each other 26,27 on the column fire bars, the two ends of column fire bars link to each other with body of heater seat 1 by bearing 3,7, and ends that pass bearing 7 back and rocking arm 10 join, the rocking arm that joins with the odd number fire bars wherein, and its other end and connecting rod 9 join, with the rocking arm that the even number fire bars joins, its other end and connecting rod 8 join.The end of connecting rod 9 joins by the eccentric shaft of pull bar 21 with eccentric wheel 14, and the end of connecting rod 8 joins by pull bar 13 another eccentric shaft with eccentric wheel 14.Eccentric wheel 14 joins through reductor 16 and motor 19.The shape of boiler foundation 2 is identical with shape at the bottom of the boiler body, that is, if being shaped as at the bottom of the boiler body is circular, square, then the shape of boiler foundation 2 be circle, square accordingly.Fire-grating seat 1 can be integrated with boiler foundation 2, is referred to as fire-grating seat, and the top of this fire-grating seat is used to lay boiler body.

A kind of embodiment preferably of the utility model is, establishes a pair of support 5 of fixedlying connected with fire-grating seat 1 on the vertical direction of fire bars 4 bottoms at least, and 2 times of rollers 25 to fire bars 4 quantity are established on support 5 tops, and roller 25 touches mutually with fire bars 4.The setting of support 5 and roller 25 increases the strong point of fire bars, and is not flexible, and rotates flexibly.Support 5 can be established 2 pairs as required, and 3 pairs, 4 equities.

The utility model another preferably embodiment be that the radius of curvature R of described fire bars 4 upper grooves is 20-25mm.Can guarantee that like this slag ball discharges easily, can guarantee the intensity of fire bars again.In fact, the size of fire bars 4 upper grooves is relevant with the size for the treatment of briquet.Its principle is, when the groove of fire bars was parallel to each other, fire bars spacing minimum can not be leaked down with moulded coal, and can only hold a moulded coal after the burning in the circular cylindrical cavity that forms of adjacent fire bars groove and be as the criterion.

Because the utility model has adopted above-mentioned technical solution, makes it compared with prior art, have slagging-off conveniently, laborsaving, the moulded coal burning zone is not destroyed, sufficient combustion, boiler output is big, the characteristics that the thermal efficiency is high.

Description of drawings:

The structural representation of an embodiment of Fig. 1-the utility model;

The A of Fig. 2-Fig. 1 is to view;

The I-I profile of Fig. 3-Fig. 1;

The structural representation of eccentric wheel 14 among Fig. 4-Fig. 1;

The partial structurtes schematic diagram of Fig. 5-Fig. 1 medium-height trestle 5;

The structural representation of roller 25 among Fig. 6-Fig. 3;

Fig. 7-fundamental diagram of the present utility model.

Provide embodiment of the present utility model below in conjunction with accompanying drawing, be used for further specifying the present technique solution.With reference to figure 1-Fig. 8.As shown in Figure 1 and Figure 2.Fire-grating seat 1 has air inlet adjustment mouth 20 for the square box of steel plate weldering system on its rear wall, antetheca is provided with cleanout door 24, and circular boiler foundation 2 is welded in the upper surface.Fire bars 4 has 10, and the radius of curvature R of two

grooves

26,27 that are parallel to each other on every fire bars is 23mm.Its end is fixed on by 10 bearings 3 on the sidewall of fire-grating seat 1, and the other end is fixed on another sidewall 6 of fire-grating seat 1 by 10 bearings 7.And its end passes bearing 7 back and joins by the ends of key 22 with rocking arm 10.The rocking arm other end that joins with fire bars 4 on the odd positions (1,3,5,7,9) is fixedly connected on the connecting rod 9 by axle 23.The rocking arm other end that joins with fire bars 4 on even number position (2,4,6,8,10) is fixedly connected on the connecting rod 8 by one.The end of connecting rod 9 joins by an end of an axle and pull bar 21, and the other end of this pull bar is socketed on the eccentric shaft 29 of eccentric wheel 14 (as shown in Figure 4).The end of connecting rod 8 joins by an end of an axle and pull bar 13, and the other end of this pull bar is socketed on another eccentric shaft 28 of eccentric wheel 14.Eccentric wheel 14 is installed on the bearing 12, and bearing 12 supports by the support of bearing 11.Eccentric wheel 14 is installed in the belt pulley 15 on the reductor through reductor 16, and the belt pulley 18 and the belt 17 that are installed on the motor join with motor 19.The support 5 that is positioned on the fire bars lower vertical direction is 2 pairs, and their two ends are fixed on the front and rear wall of fire-grating seat 1 (as shown in Figure 1).On position with respect to every fire bars 4, establish 4 axis holes on every pair of support 5, the two ends of 2 rollers 25 are positioned on 4 set axis holes, and roller 25 touches (as Fig. 3, Fig. 5, shown in Figure 6) mutually with fire bars 4.Like this, have on the every pair of support 5 20 with 25, two pairs of supports 5 of roller that fire bars 4 touches mutually on have 40 rollers 25 that touch mutually with fire bars 4.Operation principle is, with reference to figure 1 and Fig. 7.Behind the starter motor, motor drives reductor 16 and rotates by belt pulley 18, belt 17, belt pulley 15, and reduces rotating speed by the diameter of

belt pulley

18,15, increase moment of torsion, further reduce rotating speed through reductor again, behind the increase moment of torsion, drive eccentric wheel and rotate.Eccentric wheel is through two

eccentric shafts

28,29 and pull

bar

13,21, and drivening

rod

8,9 is done reciprocating, and these two connecting rods drive fire bars 4 by rocking arm 10 again and rotate.Wherein the odd number fire bars rotates with the reciprocating motion of connecting rod 9, and the even number fire bars rotates with the reciprocating motion of connecting rod 8, because the vibration-direction of connecting

rod

8,9 is just in time opposite, then the even number fire bars is opposite with the direction of rotation of odd number fire bars.The bottom-up burning of coal briquette above the fire grate, along with the continuation of burning, top in time replenishes coal briquette, and the slag ball layer of bottom after-flame is constantly thickeied.When fire grate moves, suppose that fire grate is in the IV state, at this moment, on the eccentric

eccentric shaft

28,29 1, once, the clear distance between odd number fire bars (symbol is B) and the even number fire bars (symbol is A) is less than the diameter of slag ball 30, and slag ball 30 can not fall from the fire bars seam.This state belongs to the state that begins to light a fire, slag inclusion ball 30 not between B, A fire bars.When the after-flame layer thickness acquires a certain degree the need slagging-off, starter motor, eccentric wheel rotates by direction shown in Figure 7, when going to state I, notch between B, A fire bars opens, when notch spacing (ab) is a bit larger tham the diameter of slag ball 30, will be along B, A fire bars seam vertically fall a deslagging ball 30.Because B, A fire bars bottom notch spacing (cd) are less than the diameter of slag ball 30, at this moment slag ball 30 is positioned at the groove of B, A fire bars, and the moment of spacing greater than slag ball 30 diameters do not appear in notch top between A, the B as yet, and slag ball 30 still is blocked on the fire bars.When eccentric wheel continued to rotate to state I I, slag ball 30 was still in the groove between B, A fire bars, because the size of groove is a bit larger tham a slag ball 30, so can only hold a deslagging ball 30 in it.Be transformed into from state I the process of state I I, most slag balls 30 can not be squeezed broken, and this has both guaranteed the burning of coal condition with regard to having guaranteed that not having a large amount of dusts in the slag removal flies into burner hearth, have prevented dust discharge chimney contaminated environment again.When eccentric wheel continues to rotate to state I II, the bottom spacing (cd) of notch is greater than the diameter of slag ball 30 between B, the A fire bars, a deslagging ball 30 that is positioned at it falls into the grit chamber, notch top spacing (ab) is still less than slag ball 30 diameters, and its top slag ball 30 wouldn't fall.When the slag ball in B, A fire bars notch fell into the grit chamber, A, B fire bars notch top spacing were greater than the diameter of slag ball 30, and also a deslagging ball 30 is gone into by clan from it.When eccentric wheel continues to rotate to state I V again, occurred that groove contains slag ball 30 between A, B fire bars, the state of no slag ball 30 in the groove between B, A fire bars; When eccentric wheel continued to rotate to state V, notch institute slag inclusion ball 30 fell into the grit chamber between A, the B fire bars, simultaneously, fell into a deslagging ball 30 in the notch between B, the A fire bars again ...When eccentric wheel continues rotation, A, B fire bars, B, A fire bars repeat above motion process, thereby occur that several B, A fire bars notch and several A, B fire bars notch alternately gulp down, the situation of deslagging ball 30, thereby reached continuous, even, low percentage of damage, do not destroyed coal briquette burning layering, need not open the purpose that fire door can be removed slag blanket on the fire bars.Both improve boiler output, improved the thermal efficiency of boiler again.

In like manner, if change the radius of curvature R of fire bars upper groove into 20-25mm (not comprising 23mm), other local inconvenience also can form a plurality of embodiment.

No matter fire-grating seat and boiler foundation 2 are to process respectively, and boiler foundation 2 is fixed on the fire-grating seat 1; Still the two is combined into a fire-grating seat 1, at this moment the top of fire-grating seat 1 is used to lay boiler body, all belongs to protection domain of the present utility model.

Claims

1, a kind of vertical boiler fire grate, it is by fire-grating seat (1), be positioned at the boiler foundation (2) of fire-grating seat upper surface, be positioned at the fire bars (4) on the fire-grating seat, the motor (19) and the reductor (16) that are positioned at the fire-grating seat side constitute, it is characterized in that, fire bars (4) is rotating column fire bars, establish two grooves that are parallel to each other (26) on the column fire bars, (27), the two ends of column fire bars are by bearing (3), (7) link to each other with body of heater seat (1), and an end that passes bearing (7) back and rocking arm (10) joins, the rocking arm that joins with the odd number fire bars wherein, its other end and connecting rod (9) join, with the rocking arm that the even number fire bars joins, its other end and connecting rod (8) join, and the end of connecting rod (9) joins by the eccentric shaft of pull bar (21) with eccentric wheel (14), the end of connecting rod (8) joins by pull bar (13) another eccentric shaft with eccentric wheel (14), and eccentric wheel (14) joins through reductor (16) and motor (19).

2, by the described vertical boiler fire grate of claim 1, it is characterized in that, at least establish a pair of support (5) of fixedlying connected with fire-grating seat (1) on the vertical direction of fire bars (4) bottom, establish 2 times of rollers (25) to fire bars (4) quantity on the support (5), roller (25) touches mutually with fire bars (4).

3, by claim 1 or 2 described vertical boiler fire grates, it is characterized in that the radius of curvature R of described fire bars (4) upper groove (26), (27) is 20-25mm.