Summary of the invention
The objective of the invention is at prior art can not effectively eliminate the roller kilns cross section temperature difference, the roller kilns inner width can not break through 2.6 meters technological deficiency, provide a kind of and regulate the calcinated ceramic-trick roller-bed kiln that flue gas stream distributes on the roller kilns cross section by samming grizzly bar group, have control temperature difference effect and be not subjected to characteristics such as width restriction, flow of flue gas resistance be little, make to be wider than 2.6 meters in the calcinated ceramic-trick roller-bed kiln and to become possibility.
To achieve these goals, the invention provides a kind of calcinated ceramic-trick roller-bed kiln, comprise the kiln main body that forms the kiln passage, described kiln passage is provided with and is used to change that airflow direction makes the equally distributed samming grizzly bar of kiln passage cross section temperature group in the kiln passage, and described samming grizzly bar group arranges and be positioned at the grizzly bars on described kiln passage top for several with setting means.
Described kiln main body top is provided with support, described support is provided with the gathering sill of adjusting interval of grid strip, one end of described grizzly bar is connected with described support by gathering sill, the other end extend in the described kiln passage, forms in described kiln passage to set the samming grizzly bar group that the spacing mode is arranged.
Described kiln main body top is provided with support, described grizzly bar is provided with several pilot holes of adjusting grizzly bar high and low position in described kiln passage, one end of described grizzly bar is connected with described support by described pilot hole, the other end extend in the described kiln passage, forms in described kiln passage to set the samming grizzly bar group that the built-in length mode is arranged.
Described kiln main body top is provided with support, described support is provided with the gathering sill of adjusting interval of grid strip, described grizzly bar is provided with several pilot holes of adjusting grizzly bar high and low position in described kiln passage, one end of described grizzly bar is connected with described support with gathering sill by described pilot hole, the other end extend in the described kiln passage, forms in described kiln passage to set that the spacing mode is arranged and to set the samming grizzly bar group that the built-in length mode is arranged.
Described setting spacing mode is that described grizzly bar is dredged mode with equidistant mode, middle close both sides in the kiln passage or the middle close mode in both sides of dredging is arranged.Described setting built-in length mode is that described grizzly bar is arranged with contour mode, the high mode of low mode in middle high both sides or middle low both sides in the kiln passage.
In technique scheme, described samming grizzly bar group comprises 40~60 grizzly bars, and the minimum spacing of grizzly bar is greater than 0.2D, and maximum spacing is less than 3.5D, and wherein D is the equivalent diameter of grizzly bar; The minimum range on following end distance Imitation Rock Porcelain Tiles surface of grizzly bar that stretches into the kiln passage is greater than 80mm, and ultimate range is less than 200mm.
In technique scheme, the bottom of described kiln passage also is provided with and is used for homogenizing and mixes lower stream of airflow making the equally distributed tracery wall with setting shape of kiln passage cross section temperature.Further, described tracery wall and described samming grizzly bar group are positioned at the position, same cross section of kiln passage.Highly identical shaped, the low shape of middle low high shape in both sides or middle high both sides that described setting is shaped as.
The invention provides the calcinated ceramic-trick roller-bed kiln that is provided with samming grizzly bar group in a kind of kiln passage, adjustment by grizzly bar mutual spacing or high and low position in the samming grizzly bar group changes each regional airflow direction in the kiln passage, high temperature gas flow and the distribution of low-temperature airflow in the kiln cross section are changed and realize effective mixing, can regulate the distribution on the roller kilns cross section of flue gas stream as requested arbitrarily, reach samming, effectively eliminate the purpose of the roller kilns cross section temperature difference.Because this technical scheme is to walk always to eliminate the kiln cross section temperature difference by air-flow in effective change kiln cross section, can be as requested by height, about or the various combination of height density realize comprehensive adjusting of temperature, flow resistance was little when flue gas stream passed through the grizzly bar structure, therefore control temperature difference effect of the present invention is not limited by the kiln channel width, even the roller kilns inner width is in effective control that also can realize the cross section temperature difference more than 2.6 meters, and it is simple in structure, easy to adjust, improved product quality and production efficiency to greatest extent, made the constant product quality of producing.
Further, the present invention also is provided with in the kiln passage has the tracery wall of setting shape, and tracery wall is used for homogenizing and mixes kiln passage lower stream of airflow, and kiln passage cross section temperature is evenly distributed.The setting shape of tracery wall can be the low shape in highly identical density difformity, the middle low high shape in both sides or middle high both sides.By the air-flow of kiln passage bottom is concentrated or the two side areas expansion to zone line, reach the purpose that improves medium temperature or both sides temperature on the one hand, play homogenizing on the other hand and mix air-flow effect in the kiln passage.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The specific embodiment
Fig. 1 is a structural representation of the present invention, and Fig. 2 is a kiln passage schematic cross-sectional view.As shown in Figure 1, calcinated ceramic-trick roller-bed kiln comprises the kiln main body 1 that forms the kiln path 10, be disposed with 1 or several samming grizzly bar groups 2 along its length direction in the kiln path 10, be used to change the airflow direction in the kiln passage, kiln passage cross section temperature is evenly distributed; Each samming grizzly bar group 2 is made up of several grizzly bars 21 of arranging with setting means, and is positioned at the top of kiln path 10.Under the traction of kiln hood smoke exhaust fan, air-flow flows in the kiln path 10, because the restriction of kiln main body 1 self structure, the temperature of two sidewinds and middle air flow there are differences in the kiln path 10, cause the kiln cross section temperature difference, and then cause Imitation Rock Porcelain Tiles aberration and difference in size to occur.The present invention is by being provided with one or multi-channel samming grizzly bar group 2 at kiln path 10 kiln length direction, make both sides or middle air flow by each road samming grizzly bar group 2, its flow direction changes when flowing through each grizzly bar 21 of arranging with setting means, thereby thermal current total in the kiln path 10 is redistributed by actual requirement on the kiln cross section, reach the purpose of effective elimination cross section temperature difference at last.The setting means that grizzly bar of the present invention is arranged comprises in setting spacing mode, to set built-in length mode and the compound mode of the two.Particularly, as shown in Figure 2, kiln main body 1 is provided with support 3, support 3 is provided with gathering sill 31, gathering sill 31 is used to adjust the spacing between each grizzly bar 21, grizzly bar 21 is provided with one or more pilot holes 22, a plurality of pilot holes 22 are used to adjust each grizzly bar 21 and stretch into the interior high and low position of kiln path 10, reach the effect of the following end distance Imitation Rock Porcelain Tiles surface distance that can adjust each grizzly bar, one end of grizzly bar 21 is connected with support 3 by pilot hole 22 or gathering sill 31, the other end extend in the kiln path 10, forms in the kiln path 10 to set that the spacing mode is arranged and/or to set the samming grizzly bar group 2 that the built-in length mode is arranged.The barred body body that grizzly bar can adopt ceramic rod, earthenware or other exotic material to make, its cross sectional shape can be circular or other similar shapes.Imitation Rock Porcelain Tiles 4 is positioned at the below of samming grizzly bar group 2, drives Imitation Rock Porcelain Tiles 4 by live-roller rod 5 and moves in the kiln path 10.The quantity that samming grizzly bar group 2 is set in the kiln path 10 of the present invention can be provided with 1~4 road according to the long clinkering zone that do not coexist of kiln, and 1~4 road is set in the preheating zone, and preferred version is at clinkering zone 2~3 roads to be set, and 2~3 roads are set in the preheating zone.
The invention provides the calcinated ceramic-trick roller-bed kiln that samming grizzly bar group is set in a kind of kiln passage, change airflow direction in the kiln passage by grizzly bar mutual spacing or high and low position in the adjustment samming grizzly bar group, high temperature gas flow and the distribution of low-temperature airflow in the kiln cross section are changed and realize effective mixing, reach samming, effectively eliminate the purpose of the roller kilns cross section temperature difference.Because this technical scheme is to walk always to eliminate the kiln cross section temperature difference by air-flow in effective change kiln cross section, can be as requested by height, about or the various combination of height density realize comprehensive adjusting of temperature, flow resistance was little when flue gas stream passed through the grizzly bar structure, therefore control temperature difference effect of the present invention is not limited by the kiln channel width, even the roller kilns inner width is in effective control that also can realize the cross section temperature difference more than 2.6 meters, and simple in structure, easy to adjust.The present invention breaks through the bottle footpath that present calcinated ceramic-trick roller-bed kiln can not surpass 2.6 meters of inner widths, makes the roller kilns of firing Imitation Rock Porcelain Tiles of 3 meters of inner widths become possibility, thereby has improved product quality and production efficiency to greatest extent.The roller kilns that present inner width is 2.5 meters are the longest has accomplished long 300 meters, as the roller kilns inner width is accomplished 3 meters, only needs 225 meters kilns length just can guarantee same Isoquant, has directly reduced the Production of Ceramics land used, has reduced the roller kilns construction cost, and the energy consumption reduction.This is because the preheating zone negative pressure of the existing long kiln of roller kilns is big, the negative pressure conference makes a large amount of cold wind of inspiration in the kiln, thereby reduction preheating zone temperature, and prior art generally solves the low problem of preheating zone temperature by increasing the some burner in order to guarantee the preheating zone technological temperature, thereby increased fuel consumption, because kiln is oversize, must selects the high smoke evacuation of pressure for use and take out air-heater simultaneously, thereby increase power consumption.When identical kiln is long, as the roller kilns inner width is accomplished 3 meters, can corresponding increase fire the quantity of Imitation Rock Porcelain Tiles simultaneously, make production output improve more than 20%.For example, the Imitation Rock Porcelain Tiles that the roller kilns that present inner width is 2.5 meters laterally can only be put 3 600mm * 600mm, the roller kilns that inner width is 3 meters laterally then can be put 4, and production efficiency significantly improves.
In the technique scheme of the present invention, set the spacing mode and comprise equidistant mode, the middle thin mode of close mode in both sides and middle close both sides of dredging, set the built-in length mode and comprise contour mode, the high mode of low mode in middle high both sides and middle low both sides, further specify technical scheme of the present invention below by specific embodiment.
First embodiment
Fig. 3 is the structural representation of first embodiment of the invention, in the kiln passage grizzly bar with the centre dredge, the close setting spacing mode in both sides arranges.As shown in Figure 3, on the kiln main body 1 of present embodiment support 3 is set, offer gathering sill 31 on the support 3, offer a pilot hole 22 on the grizzly bar 21, bolt passes pilot hole 22 and gathering sill 31 is connected grizzly bar 21 on the support 3, because gathering sill 31 can be adjusted the spacing between each grizzly bar 21, thereby forming grizzly bar 21 dredges with the centre in the kiln path 10, the close mode in both sides is suspended on the top of kiln path 10, by air-flow in the kiln passage is concentrated to zone line, reach the purpose that improves medium temperature, when medium temperature is low, kiln passage cross section temperature is evenly distributed.
In the present embodiment technical scheme, thin in the middle of the grizzly bar, the close design pitch in both sides can adopt the arithmetic progression form, and wherein minimum spacing is greater than 0.2D, and maximum spacing is less than 3.5D, and D is the equivalent diameter of grizzly bar, and spacing is adjacent two grizzly bar outer rim distances.Maximum spacing does not have the effect that changes airflow direction too greatly, and the too little air current flow resistance that then can make of minimum spacing strengthens.Grizzly bar quantity is 40~60 in the samming grizzly bar group, determines that according to kiln passage inner width situation the grizzly bar quantity of preferred version is 45~55.For example, for 3 meters of inner widths fire the Imitation Rock Porcelain Tiles roller kilns, can adopt the porcelain tube of external diameter Φ 30 to do grizzly bar, grizzly bar quantity is 50, as distributing in approximate equidistant mode, the grizzly bar average headway is 30mm; Arrange as, the close setting spacing mode in both sides thin with the centre, the spacing of mid portion grizzly bar can be arranged to about 60mm, and the spacing of two side portions grizzly bar is controlled at about 10mm, and above-mentioned spacing is provided with visual actual thermoregulation effect and adjusts flexibly.
In the present embodiment technical scheme, also can set gradually 1 or several along the kiln channel-length direction and have the tracery wall 11 of setting shape, tracery wall 11 is arranged on the bottom of kiln passage, be positioned at the below of live-roller rod 5, be used for homogenizing and mix kiln passage lower stream of airflow, kiln passage cross section temperature is evenly distributed.Further, tracery wall 11 can be positioned at position, the same cross section of kiln path 10 with samming grizzly bar group 2, brings into play the effect of air-flow in samming grizzly bar group 2 and tracery wall 11 homogenizing and the mixing kiln passage to greatest extent.Tracery wall is built into form straggly by refractory brick, and setting shape can be highly identical shaped, the low shape of middle low high shape in both sides or middle high both sides, and it is identical different with density to be divided into density again in highly identical shaped.Structure shown in Figure 3 is identical shaped for highly identical density, mainly plays homogenizing and mixes air-flow effect in the kiln passage.
Second embodiment
Fig. 4 is the structural representation of second embodiment of the invention, and grizzly bar setting spacing mode close with the centre, that dredge both sides is arranged in the kiln passage.As shown in Figure 4, on the kiln main body 1 of present embodiment support 3 is set, offer gathering sill 31 on the support 3, offer a pilot hole 22 on the grizzly bar 21, bolt passes pilot hole 22 and gathering sill 31 is connected grizzly bar 21 on the support 3, because gathering sill 31 can be adjusted the spacing between each grizzly bar 21, thereby it is close with the centre in the kiln path 10 to form grizzly bar 21, the mode that dredge both sides is suspended on the top of kiln path 10, by air-flow in the kiln passage is expanded to two side areas, reach the purpose that improves the both sides temperature, when the both sides temperature is low, kiln passage cross section temperature is evenly distributed.
The design pitch form of present embodiment, distance values, grizzly bar quantity are identical with the first embodiment technical scheme.Simultaneously, present embodiment can further be provided with tracery wall 11, and tracery wall also can adopt the structure of first embodiment, repeats no more.
The 3rd embodiment
Fig. 5 is the structural representation of third embodiment of the invention, and grizzly bar is arranged with middle height, the low setting built-in length mode in both sides in the kiln passage.As shown in Figure 5, on the kiln main body 1 of present embodiment support 3 is set, offer several pilot holes 22 on the grizzly bar 21, bolt passes one of them pilot hole 22 grizzly bar 21 is connected on the support 3, because pilot hole 22 can be adjusted the length that each grizzly bar 21 stretches into the kiln passage, thereby form grizzly bar 21 is suspended on the kiln path 10 with middle height, the low mode in both sides in the kiln path 10 top, by air-flow in the kiln passage is concentrated to zone line, reach the purpose that improves medium temperature, under the low situation of medium temperature, kiln passage cross section temperature is evenly distributed.
In the present embodiment technical scheme, the built-in length high in the middle of the grizzly bar, that both sides are low adopts the arithmetic progression form, its high and low position comes in end distance Imitation Rock Porcelain Tiles surface distance under the grizzly bar, minimum range is greater than 80mm, ultimate range is less than 200mm, the too little meeting of minimum range reduces the both sides temperature, and ultimate range too greatly then is unfavorable for adjusting medium temperature.Grizzly bar quantity is 40~60 in the samming grizzly bar group, determines that according to kiln passage inner width situation the grizzly bar quantity of preferred version is 45~55.For example, for 3 meters of inner widths fire the Imitation Rock Porcelain Tiles roller kilns, can adopt the porcelain tube of external diameter Φ 30 to do grizzly bar, grizzly bar quantity is 50, as with approximate equal altitudes setting, the distance on end distance Imitation Rock Porcelain Tiles surface is about 120mm under the grizzly bar; As arranging with middle height, the low setting built-in length mode in both sides, the distance on end distance Imitation Rock Porcelain Tiles surface is about 160mm under the mid portion grizzly bar, the distance on end distance Imitation Rock Porcelain Tiles surface can be controlled in about 100mm under the two side portions grizzly bar, and above-mentioned distance is provided with visual actual thermoregulation effect and adjusts flexibly.
In the present embodiment technical scheme, also can set gradually 1 or several along the kiln channel-length direction and have the tracery wall 11 of setting shape, tracery wall 11 is arranged on the bottom of kiln passage, be positioned at the below of live-roller rod 5, be used for homogenizing and mix kiln passage lower stream of airflow, kiln passage cross section temperature is evenly distributed.Further, tracery wall 11 can be positioned at position, the same cross section of kiln path 10 with samming grizzly bar group 2, brings into play the effect of air-flow in samming grizzly bar group 2 and tracery wall 11 homogenizing and the mixing kiln passage to greatest extent.Tracery wall is built into form straggly by refractory brick, and setting shape can be highly identical shaped, the low shape of middle low high shape in both sides or middle high both sides, and it is identical different with density to be divided into density again in highly identical shaped.Structure shown in Figure 5 is middle low, the high shape in both sides, by the air-flow of kiln passage bottom is concentrated to zone line, reaches the purpose that improves medium temperature on the one hand, plays homogenizing on the other hand and mixes air-flow effect in the kiln passage.
The 4th embodiment
Fig. 6 is the structural representation of fourth embodiment of the invention, and the setting built-in length mode that grizzly bar is low with the centre in the kiln passage, both sides are high is arranged.As shown in Figure 6, on the kiln main body 1 of present embodiment support 3 is set, offer several pilot holes 22 on the grizzly bar 21, bolt passes one of them pilot hole 22 grizzly bar 21 is connected on the support 3, because pilot hole 22 can be adjusted the length that each grizzly bar 21 stretches into the kiln passage, thereby form the top that grizzly bar 21 is low with the centre in the kiln path 10, mode that both sides are high is suspended on the kiln path 10, by air-flow in the kiln passage is expanded to two side areas, reach the purpose that improves the both sides temperature, under the low situation of both sides temperature, kiln passage cross section temperature is evenly distributed.
End distance Imitation Rock Porcelain Tiles surface distance under the built-in length form of present embodiment, the grizzly bar, grizzly bar quantity are identical with the 3rd embodiment technical scheme, repeat no more.Simultaneously, present embodiment can further be provided with tracery wall 11, different with the 3rd embodiment is, the tracery wall of present embodiment is middle high, the low shape in both sides, on the one hand by the air-flow of kiln passage bottom is expanded to two side areas, reach the purpose that improves the both sides temperature, play homogenizing on the other hand and mix air-flow in the kiln passage, bring into play samming grizzly bar group and tracery wall homogenizing and the effect that mixes air-flow in the kiln passage to greatest extent.
The 5th embodiment
The present embodiment technical scheme is to combine with the technical scheme of the 3rd embodiment shown in Figure 5 and first embodiment shown in Figure 3 or with the technical scheme of second embodiment shown in Figure 4, in the kiln passage, form to set that the spacing mode is arranged and, to realize comprehensive adjusting of temperature by the various combination of height density to set the samming grizzly bar group of the combining form that the built-in length mode arranges.Its main combining form is respectively:
(1) grizzly bar is in the close setting spacing mode in thin both sides, centre, with the low setting built-in length mode assembled arrangement in high both sides, centre, the middle close setting spacing mode in both sides of dredging is used for air-flow in the kiln passage is concentrated to zone line, the low mode in middle high both sides also is used for air-flow in the kiln passage is concentrated to zone line, finally reaches the purpose that improves medium temperature;
(2) grizzly bar is in the thin setting spacing mode in close both sides, centre, with the low setting built-in length mode assembled arrangement in high both sides, centre, the setting spacing mode that dredge middle close both sides is used for air-flow in the kiln passage is expanded to two side areas, the low mode in middle high both sides is used for air-flow in the kiln passage is concentrated to zone line, finally reaches in the middle of improving and the purpose of both sides temperature.
Simultaneously, technique scheme can also be set shape with tracery wall and combine the more multi-form combination of formation, the setting shape of tracery wall can be highly identical shaped, the low shape in middle low high shape in both sides or middle high both sides, it is identical different with density to be divided into density in highly identical shaped again, select best combining structure form according to actual conditions, performance changes the effect of air-flow in airflow direction, homogenizing and the mixing kiln passage to greatest extent.
The 6th embodiment
The present embodiment technical scheme is to combine with the technical scheme of the 4th embodiment shown in Figure 6 and first embodiment shown in Figure 3 or with the technical scheme of second embodiment shown in Figure 4, in the kiln passage, form to set that the spacing mode is arranged and, to realize comprehensive adjusting of temperature by the various combination of height density to set the samming grizzly bar group of the combining form that the built-in length mode arranges.Its main combining form is respectively:
(1) grizzly bar is dredged the close setting spacing mode in both sides, is hanged down the high setting built-in length mode assembled arrangement in both sides with the centre with the centre, the middle close setting spacing mode in both sides of dredging is used for air-flow in the kiln passage is concentrated to zone line, the high mode in middle low both sides is used for air-flow in the kiln passage is expanded to two side areas, finally reaches in the middle of improving and the purpose of both sides temperature;
(2) grizzly bar is in the thin setting spacing mode in close both sides, centre, with the high setting built-in length mode assembled arrangement in low both sides, centre, the setting spacing mode that dredge middle close both sides is used for air-flow in the kiln passage is expanded to two side areas, the high mode in middle low both sides is used for air-flow in the kiln passage is expanded to two side areas, finally reaches the purpose that improves the both sides temperature.
Simultaneously, technique scheme can also be set shape with tracery wall and combine the more multi-form combination of formation, repeats no more.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.