CN201652377U

CN201652377U - Fire grate sheet without grooves for scale fire grate

Info

Publication number: CN201652377U
Application number: CN2010201987681U
Authority: CN
Inventors: 吴德广; 杨国富; 吴耀奎
Original assignee: 吴德远
Priority date: 2010-05-21
Filing date: 2010-05-21
Publication date: 2010-11-24
Anticipated expiration: 2020-05-21

Abstract

The utility model discloses a fire grate sheet without grooves for scale fire grate. The fire grate sheet herein comprises a setting body, an overturning body, shaft heads on two ends of the overturning body, the overturning body possessing ash removal surface, wherein the ash removal surface of the overturning body between the two shaft heads is smooth and without grooves. The fire grate head is characterized by heavy head and light feet, so that when in inclined status, the fire grate can automatically invert and overturn, thereby saving making and using cost of ear-shaped grates. Second, coal leaked from the above will not be bore and accepted by the shaft groove, thereby avoiding burning fire grate sheets by the upper and lower fire, and strengthening service lifetime of the fire grates. In addition, the dismounting of shaft groove is equivalent to the dismounting of windbreak wall, resulted in smooth wind inlet and larger wind speed, which is not only advantageous for coal burning in processing surface, but also for wind cooling of the entire fire grate.

Description

The slotless fire grate segment that the scale fire grate is used

Technical field

The utility model relates to a kind of structure of boiler grate.

Background technology

Fire grate segment is the vitals of boiler, has only the anti-fire of fire grate segment, and indeformable coming off plays a protective role, and following assembly just is not easy to burn out, and also can prolong the service life of boiler, can also save great amount of manpower and material resources.

The boiler grate that uses is to be combined into by fire grate segment and clamping plate at present, and each is paid clamping plate five to seven fire grate segment (claiming a group) is installed, and a slice ear row wherein must be arranged, and other are general row.Ear row is two different kinds with general row, and installing in production makes troubles, and ear is lined up and originally exceeded general row.As shown in Figures 2 and 3, the fire grate in the present boiler that uses, every fire grate segment all is that a slice presses a slice to install sideling, general like fish scale, be to hold to burn body 1 and be used to carry fuel above, be below flip body 3 to be reversed by spindle nose 5, hold burn body the surface for holding burning face 2.

Ear row's effect is the row of turning over, and promotes exactly to comprise that this is in one group of interior fire grate segment once inside out.The new fire grate segment of just having loaded onto is not heated, and not distortion does not have the slag bonding certainly yet, and ear row is easy to upset.Boiler is through work for a long time, and fire grate segment is heated repeatedly, will be out of shape.Cinder at high temperature must generate slagging scorification, be bonded on the fire grate segment, under several resistance factor effects ear row to go to promote these fire grate segment difficulties bigger.But ear comes under the rigidity active force of clamping plate, roller and still will overturn by force, and two power are not given in mutually, very easily causes impaired the pulling of ear row to break down down, causes the whole situation that fire grate is difficult to operate as normal of organizing.

Secondly, heating industry has a puzzlement people's strange phenomenon now, be exactly that boiler hearth temperature is generally about 800 ℃, and the plain cast iron fusing point should be more than 1000 ℃, can be to use the fire grate segment of scrapping but often to have the phenomenon that is melted, the low strange phenomenon that but burns out high-temperature material of this furnace temperature promptly occur.The inventor is through discovering that its basic reason is as follows: no matter be present general row or ear row, comprise that all one is positioned at axial trough 6 on the flip body shown in Figure of description 2, this position is an axle in design early, made groove into for weight reduction afterwards, only leave spindle nose 5 at the flip body two ends, to promote spindle nose, make flip body and hold and burn body and overturn together by clamping plate.So on all now general rows and the ear row groove 6 is arranged all, particularly five fire grates typical vat especially.

Hold the meeting oxidation in the long-term combustion process of fuel of burning face, slagging scorification, sometimes in addition the fusing, form projection, groove or canine tooth shape, so when the coal supply powder, must leak down from these gullies, just be that the new fire grate of new clothes also will leak coal dust from the slit, be many and few difference, the coal dust that leaks down is just in time accepted by the axial trough 6 of next piece fire grate segment and has been collected, running enters the combustion zone band after a few minutes, coal dust below the high temperature of several Baidu even nearly thousand degree above the fire grate, this moment fire grate in the axial trough is lighted very soon, and the back side of last slice fire grate is roasted, same fire is roasting bigger than burning power.Moreover the coal dust in the axial trough is in tuyere position again, and burning condition is superior, and oxygen supply is abundant, and caloric value is far longer than the fire coal on the working face.In this case, only 100 gram coals just can make distortion of a slice fire grate segment or fusing, moreover such burning can take place tens times every day, heating repeatedly goes round and begins again, the situation that causes fire grate segment all to be roasted up and down, fire grate segment deform soon, oxidation, burn useless at last.

In addition, existing boiler is in use supplied with the burning of whole boiler and is seen shown in Figure of description 3 arrows with oxygen, all is to enter burner hearth from the extruding of the slit between fire grate segment.In this case, the axial trough bottom surface has become a wall of stopping up wind on the flip body, stops air intake, and a large amount of wind energies are spinned on the spot from decreasing energy, directly influence the abundant burning of coal, and both consumed power wasted energy again.

From the design section of whole fire grate, existing fire grate has distinct disadvantage, though fire grate up and down thin and thick difference is arranged, just production run all the year round facts have proved, below the flip body part still thick partially, not only waste material but also do not reach the purpose of anti-burning.

The utility model content

Technical problem to be solved in the utility model provides the slotless fire grate segment that the scale fire grate that removes the smooth slotless of red dog of flip body is used between a kind of two spindle noses.

The utility model is achieved through the following technical solutions:

The slotless fire grate segment that a kind of scale fire grate is used comprises that holding of becoming one burn body and flip body, holds the surface of burning body for holding the burning face, and flip body comprises and remove red dog, flip body except that the smooth slotless of red dog between described two spindle noses.

The red dog that removes of described flip body is the plane, removes red dog especially and to hold the burning face vertical.

The removing red dog and also can be cambered surface of certain described flip body, its center line basic with hold the burning body to hold the burning face vertical.

The described thickness that holds the burning body is 6 times of flip body thickness, and especially, holding the thickness that burns body is 18mm, and the thickness of flip body is 3mm.And the fire grate segment that uses at present holds the thickness that burns body and is generally 16mm, and the thickness of flip body is generally 5mm, though thin and thick has difference up and down, but just production run all the year round facts have proved that still thick partially below, the utility model is following attenuate, top thickening, weight does not add.

Remove the smooth slotless of red dog between the slotless fire grate segment that the utility model scale fire grate is used, two spindle noses, and increased and hold the thickness that burns body.Original fire grate bottom is alleviated, and increase the weight of on top, and fire grate is top-heavy, is operated under the state of inclination, and ear row's manufacturing and use cost have been saved in the upset of will falling down automatically simultaneously.Secondly, the coal that leaks down in the top is unlikely to be accepted by axial trough, the phenomenon that just can not exist fire baking simultaneously up and down to burn fire grate segment, the service life that has strengthened fire grate.In addition, remove axial trough and be equivalent to remove windbreak, air intake is smooth and easy, and wind speed strengthens, and has both helped burning of coal on the working face, again whole fire grate is played air-cooled effect.

Description of drawings

Fig. 1 is the profile of the utility model slotless scale fire grate;

Fig. 2 is the structural representation that groove scale fire grate is arranged;

Fig. 3 is the cutaway view that groove scale fire grate is arranged;

Among the figure: 1-holds the burning body, and 2-holds the burning face, the 3-flip body, and 4-removes red dog, 5-spindle nose, 6-axial trough.

The specific embodiment

Below by specific embodiment the utility model is described in further detail.

Shown in Figure of description 1 (direction of arrow is wind direction among the figure), the slotless fire grate segment that a kind of scale fire grate of the utility model is used, comprise that holding of integrally casting moulding burn body 1 and flip body 3, hold the surface of burning body 1 and be used for the support fire coal for holding burning face 2, flip body 3 comprise can make ash smoothly row down except that red dog 4, there is the spindle nose identical with spindle nose 5 among Fig. 1 at flip body 3 two ends, and driving the fire grate segment upset, flip body removes red dog 4 smooth slotlesses between two spindle noses.

Shown in Figure of description 1, it is the plane that fire grate segment removes red dog 4, not only helps the smooth discharge of lime-ash, and has increased the area of air channel air inlet between two fire grate segments.

With comparing with the groove scale fire grate that has as shown in Fig. 3 of present use as Fig. 2, smooth no axial trough between two spindle noses of slotless fire grate segment, the coal that leaks down in the top is discharged smoothly to be unlikely to be accepted by axial trough, the phenomenon that just can not exist fire baking simultaneously up and down to burn fire grate segment, fire grate segment distortion, oxidation, come off and the probability of falling row just tails off, will improve service life, also reduced production cost and labour intensity simultaneously.Remove red dog 4 and to hold burning face 2 vertical, do not had axial trough, just be equivalent to push over windbreak, the air-admitting surface increase, it is unobstructed that air intake becomes.Air intake is smooth and easy, and air flow line is by dredging to close, and wind speed strengthens, and wind-force strengthens, and has both helped burning of coal on the working face, again whole fire grate is played air-cooled effect.

Shown in Figure of description 1, hold the thickness that burns body 1 and be 6 times of thickness of flip body 3, especially, holding the thickness that burns body is 18mm, the thickness of flip body is 3mm.And the fire grate segment that uses at present holds the thickness that burns body 1 and is generally 16mm, and the thickness of flip body 3 is generally 5mm, sees Figure of description 3.Forward the thickness of body by the thickness that reduces flip body with relative increase, thereby strengthened the thickness of supporting body working face, also just increased the holding capacity and the heat resistance of whole fire grate certainly.Make fire grate segment become top-heavy simultaneously, be operated under the state of inclination, the upset of will falling down does not automatically exist with the ear venting to promote, and has saved ear row's manufacturing and use cost simultaneously.Every all upset automatically of fire grate, ear row promotes the hidden danger of general row's maximum by force and is got rid of, and also just can not leak coal in the place of falling row.

Claims

1. slotless fire grate segment that the scale fire grate is used comprises holding and burns body and flip body, hold burn body the surface for holding the burning face, there is spindle nose at the flip body two ends, flip body has except that red dog, it is characterized in that: the flip body between described two spindle noses except that the smooth slotless of red dog.

2. the slotless fire grate segment that scale fire grate as claimed in claim 1 is used is characterized in that: the described red dog that removes is the plane.

3. the slotless fire grate segment that scale fire grate as claimed in claim 2 is used is characterized in that: describedly remove red dog and to hold the burning face vertical.

4. the slotless fire grate segment of using as described scale fire grate one of in the claim 1 to 3 is characterized in that: the described thickness that burns body that holds is 6 times of flip body thickness.

5. the slotless fire grate segment that scale fire grate as claimed in claim 4 is used is characterized in that: the described thickness that holds the burning body is 18mm, and the thickness that removes grey body is 3mm.