CN102636024B - Control system for internal flow field of mesh-belt kiln - Google Patents
Control system for internal flow field of mesh-belt kiln Download PDFInfo
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- CN102636024B CN102636024B CN 201210090015 CN201210090015A CN102636024B CN 102636024 B CN102636024 B CN 102636024B CN 201210090015 CN201210090015 CN 201210090015 CN 201210090015 A CN201210090015 A CN 201210090015A CN 102636024 B CN102636024 B CN 102636024B
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Abstract
The invention relates to a control system for an internal flow field of a mesh-belt kiln. A kiln tail air inlet is arranged at the tail of a low box in a cooling section of the mesh-belt kiln, a plurality of low box suction hoods are arranged on the top wall of the low box, an upper end opening of each low box suction hood is connected with a low box branch air duct, a low box air duct electric adjusting valve is arranged in each low box branch air duct, an upper end opening of each low box branch air duct is connected into a low box main air duct, the low box main air duct is connected with a suction opening of a cooling fan, an air outlet of the cooling fan is connected into a high box main air duct, the high box main air duct is positioned above the low box and extends along the height direction of a high box, a plurality of high box air outlet hoods are arranged on the top wall of the cooling fan, an upper end opening of each high box air outlet hood is connected with a high box branch air duct, a high box air duct electric adjusting valve is arranged in each high box branch air duct, and an upper end opening of each high box branch air duct is connected with the high box main air duct. By the aid of the control system for the internal flow field of the mesh-belt kiln, the temperature in the mesh-belt kiln can be more accurately controlled, and the manufacturing quality of denitration catalysts is improved.
Description
Technical field
The present invention relates to a kind of calcining mesh-belt kiln of producing denitrating catalyst, particularly a kind of mesh-belt kiln kiln flow field control system, belong to denitrating catalyst manufacturing facility technical field.
Background technology
The calcining mesh-belt kiln of producing denitrating catalyst is provided with along the guipure direction of advance heat up section, first section of burning till, secondary temperature elevation section, second section of burning till and cooling section successively, after denitrating catalyst burns till, finally will carry out cooling and shaping at cooling section.In cooling process, catalyst can cause the contraction of product on length and width because of losing of moisture, if the temperature field at this moment in kiln and moisture field is too inhomogeneous will cause the moisture on same catalyst to lose difference, same catalyst contraction in the horizontal and vertical directions is inconsistent, thereby causes the catalyst cracking.Current mesh-belt kiln adopts naturally cooling mode more, makes the section of burning till temperature generally higher, the cooling section difficult control of temperature, and the actual temperature in kiln and the technological temperature error ratio of setting are larger, are difficult to guarantee technological requirement and product quality.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, a kind of mesh-belt kiln kiln flow field control system is provided, can control more accurately the mesh-belt kiln kiln temperature.
For solving above technical problem, a kind of mesh-belt kiln kiln flow field control system provided by the present invention, comprise that the high case of mesh-belt kiln cooling section and mesh-belt kiln cooling section hang down case, guipure is positioned at the middle part of the high case short transverse of described mesh-belt kiln cooling section and low case extends along horizontal plane to described mesh-belt kiln cooling section, on described guipure, tiling has denitrating catalyst, the afterbody of the low case of described mesh-belt kiln cooling section is provided with the kiln tail air inlet wide with guipure, the lower end of described kiln tail air inlet is concordant with guipure, the roof of the low case of described mesh-belt kiln cooling section is provided with a plurality of low case suspended hoods, each described low case suspended hood lays respectively at the middle part of the low case width of described mesh-belt kiln cooling section and is uniformly distributed along the low case length direction of mesh-belt kiln cooling section, the upper port of each described low case suspended hood is connected with low case branch air duct respectively, be respectively equipped with low case air channel electric control valve in each described low case branch air duct, the upper port of each described low case branch air duct accesses respectively the total air channel of low case, the total air channel of described low case along continuous straight runs extends and is connected with the inlet scoop of cooling blower, the air outlet of described cooling blower accesses the total air channel of high case, the total air channel of described high case is positioned at described mesh-belt kiln cooling section high case top and extends along the high case length direction of mesh-belt kiln cooling section, the roof of the high case of described mesh-belt kiln cooling section is provided with a plurality of high case outlet housings, each described high case outlet housing lays respectively at the middle part of the high case width of described mesh-belt kiln cooling section and is uniformly distributed along the high case length direction of mesh-belt kiln cooling section, the upper port of each described high case outlet housing is connected with high case branch air duct respectively, be respectively equipped with high case air channel electric control valve in each described high case branch air duct, the upper port of each described high case branch air duct is connected with the total air channel of described high case respectively.
With respect to prior art, the present invention has obtained following beneficial effect: denitrating catalyst is with guipure low case motion from the high case of mesh-belt kiln cooling section to the mesh-belt kiln cooling section, and in this process, temperature progressively obtains cooling from high to low; Cold wind enters the low case of mesh-belt kiln cooling section from kiln tail air inlet, skim over guipure and denitrating catalyst flow upstream, then enter low case branch air duct by low case suspended hood, the suction air volume of controlling each low case suspended hood by the aperture of regulating low case air channel electric control valve is even, the wind of each low case branch air duct collects into the total air channel of low case, send into the total air channel of high case by cooling blower again, then enter each high case branch air duct by the total air channel of high case, the air output of controlling each high case outlet housing by the aperture of regulating each high case air channel electric control valve is even; Just entered that fresh air temperature in the low case of mesh-belt kiln cooling section is low and water capacity is low, denitrating catalyst minimum with temperature and relatively dry contact, can keep that well heat is wet exchanges; Along with the cold wind flow upstream, the temperature of cold wind progressively rises, water capacity progressively improves, the blower fan that now is cooled is delivered in the high case of mesh-belt kiln cooling section, the denitrating catalyst higher with temperature, that water capacity is higher contacts, continuation can keep the well wet exchange of heat, and the denitrating catalyst temperature difference and the psychrometric difference that in traveling process and between cold wind, can keep relative stability, and avoids quenching to cause the catalyst cracking.
As preferred version of the present invention, the top of the total air channel of described high case entrance is connected with wind output channel, and the exhaust outlet place of described wind output channel is provided with the air draft electric control valve.By wind output channel, can discharge section temperature after the low case of mesh-belt kiln cooling section carries out the wet exchange of heat raise, the cold wind that water capacity strengthens, increasing enters the resh air requirement of the low case of mesh-belt kiln cooling section, the aperture of air draft electric control valve is larger, the air capacity of discharging is larger, water capacity with Bas Discharged is larger, the new wind entered from kiln tail air inlet is more, the aperture of air draft electric control valve is less, the air capacity of discharging is less, water capacity with Bas Discharged is fewer, the new wind entered from kiln tail air inlet is fewer, by the aperture of regulating the air draft electric control valve, can make the temperature of the total air channel of high case Air and humidity in a suitable level.
As preferred version of the present invention, the entrance of each described low case suspended hood all tilts to kiln tail direction, and each described high case outlet housing all tilts to the rightabout of kiln tail.The entrance of low case suspended hood all tilts to be conducive to reduce to kiln tail direction the resistance that cold wind enters low case branch air duct, and high case outlet housing is to the guipure upstream oblique, the resistance when being beneficial to the cold wind that reduces downstream and flowing out from high case branch air duct.
As preferred version of the present invention, the top, middle part in the total air channel of described high case is provided with pressure transmitter, the signal input part of the signal output part cut-in pressure intelligent controller of described pressure transmitter, the analog output termination of described pressure intelligent controller enters the pressure signal input of frequency converter, and the clutch end of described frequency converter accesses and drive the motor of described cooling blower.The blast that pressure transmitter is surveyed the total air channel of high case offers the pressure intelligent controller, the pressure intelligent controller compares and offers frequency converter by actual blast and setting blast, when actual blast is less than the setting blast, frequency converter will improve the rotating speed of cooling blower; When actual blast is greater than the setting blast, frequency converter will reduce the rotating speed of cooling blower.
As preferred version of the present invention, described pressure transmitter is PTG500 type blast pressure transmitter, and described pressure intelligent controller is XSH/C/SIIIG1VON type pressure intelligent controller, and described frequency converter is NVF2-2.5/PS4 type frequency converter.
As preferred version of the present invention, the middle part of the low case width of described mesh-belt kiln cooling section is provided with a plurality of and described low case air channel electric control valve low case temperature sensor one to one, each described low case temperature sensor along the mesh-belt kiln cooling section hang down that the case length direction is uniformly distributed and with each described low case suspended hood space; The signal output part of each described low case temperature sensor accesses respectively the signal input part of corresponding Intelligent temperature controller, and the analog output end of each described Intelligent temperature controller accesses respectively the signal input part of corresponding low case air channel electric control valve.The temperature that low case temperature sensor is surveyed in the low case of mesh-belt kiln cooling section offers Intelligent temperature controller, Intelligent temperature controller compares and offers corresponding low case air channel electric control valve by actual temperature and design temperature, when actual temperature, during lower than design temperature, low case air channel electric control valve will reduce aperture accordingly; When actual temperature, during higher than design temperature, low case air channel electric control valve will strengthen aperture accordingly.
As preferred version of the present invention, described low case temperature sensor is PT100 type thermal resistance, and described Intelligent temperature controller is SRS14A type Intelligent temperature controller, and described low case air channel electric control valve is IQM10 type electric control valve.
As preferred version of the present invention, the middle part of the high case width of described mesh-belt kiln cooling section is provided with a plurality of high case temperature sensors, each described high case temperature sensor along the high case length direction of mesh-belt kiln cooling section be uniformly distributed and with each described high case outlet housing space; The signal output part of each described high case temperature sensor accesses respectively the signal input part of corresponding Intelligent temperature controller, and the analog output end of each described Intelligent temperature controller accesses respectively the signal input part of corresponding high case air channel electric control valve.The temperature that high case temperature sensor is surveyed in the high case of mesh-belt kiln cooling section offers Intelligent temperature controller, Intelligent temperature controller compares and offers corresponding high case air channel electric control valve by actual temperature and design temperature, when actual temperature, during lower than design temperature, corresponding high case air channel electric control valve will reduce aperture; When actual temperature, during higher than design temperature, corresponding high case air channel electric control valve will strengthen aperture.
As preferred version of the present invention, described high case temperature sensor is PT100 type thermal resistance, and described Intelligent temperature controller is SRS14A type Intelligent temperature controller, and described high case air channel electric control valve is IQM10 type electric control valve.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, and accompanying drawing only provides reference and explanation use, non-in order to limit the present invention.
The structural representation that Fig. 1 is mesh-belt kiln kiln flow field control system of the present invention.
Fig. 2 is the electrical schematic diagram that in the present invention, cooling blower is controlled.
Fig. 3 is the electrical schematic diagram that in the present invention, each electric control valve is controlled.
In figure: 1. the mesh-belt kiln cooling section hangs down case; 1a. kiln tail air inlet; 1b. low case suspended hood; 1c. low case branch air duct; 1d. low case air channel electric control valve; 1e. the total air channel of low case; 2. cooling blower; 3. the high case of mesh-belt kiln cooling section; 3a. the total air channel of high case; 3b. high case branch air duct; 3c. high case air channel electric control valve; 3d. high case outlet housing; 4. wind output channel; 4a. air draft electric control valve; 4b. exhaust outlet; 5. guipure; T1, T2, the low case temperature sensor of T3, T4.; T5, T6, the high case temperature sensor of T7, T8.; TK1, TK2, TK3, TK4, TK5, TK6, TK7, TK8. Intelligent temperature controller; Y. pressure transmitter; YK1, YK2. pressure intelligent controller; IV. frequency converter.
The specific embodiment
As shown in Figure 1, mesh-belt kiln kiln flow field control system of the present invention comprises the high case 3 of mesh-belt kiln cooling section and the low case 1 of mesh-belt kiln cooling section, guipure 5 is positioned at the middle part of high case 3 short transverses of mesh-belt kiln cooling section and low case 1 extends along horizontal plane to the mesh-belt kiln cooling section, on guipure 5, tiling has denitrating catalyst, the afterbody of the low case 1 of mesh-belt kiln cooling section is provided with the kiln tail air inlet 1a wide with guipure 5, the lower end of kiln tail air inlet 1a is concordant with guipure 5, the roof of the low case 1 of mesh-belt kiln cooling section is provided with a plurality of low case suspended hood 1b, each low case suspended hood 1b lays respectively at the middle part of the low case width of mesh-belt kiln cooling section and is uniformly distributed along the low case length direction of mesh-belt kiln cooling section, the upper port of each low case suspended hood 1b is connected with low case branch air duct 1c respectively, the entrance of each low case suspended hood 1b all tilts to kiln tail direction, enter the resistance of low case branch air duct 1c to reduce cold wind, be respectively equipped with low case air channel electric control valve 1d in each low case branch air duct 1c, the upper port of each low case branch air duct 1c accesses respectively the low total air channel 1e of case, the total air channel of low case 1e along continuous straight runs extends and is connected with the inlet scoop of cooling blower 2.
The air outlet of cooling blower 2 accesses the total air channel 3a of high case, the total air channel 3a of high case is positioned at mesh-belt kiln cooling section high case 3 tops and extends along the high case length direction of mesh-belt kiln cooling section, the roof of the high case 3 of mesh-belt kiln cooling section is provided with a plurality of high case outlet housing 3d, each high case outlet housing 3d lays respectively at the middle part of high case 3 widths of mesh-belt kiln cooling section and is uniformly distributed along high case 3 length directions of mesh-belt kiln cooling section, the upper port of each high case outlet housing 3d is connected with high case branch air duct 3b respectively, each high case outlet housing 3d all tilts to the rightabout of kiln tail, resistance while flowing out from high case branch air duct 3b with the cold wind that reduces downstream.Be respectively equipped with high case air channel electric control valve 3c in each high case branch air duct 3b, the upper port of each high case branch air duct 3b is connected with the total air channel 3a of high case respectively.
The top of the total air channel of high case entrance is connected with wind output channel 4, and the exhaust outlet 4b place of wind output channel 4 is provided with air draft electric control valve 4a.Exhaust outlet 4b by wind output channel 4 can discharge section temperature after the low case 1 of mesh-belt kiln cooling section carries out the wet exchange of heat raise, the cold wind that water capacity strengthens, increasing enters the resh air requirement of the low case 1 of mesh-belt kiln cooling section, the aperture of air draft electric control valve 4a is larger, the air capacity of discharging is larger, water capacity with Bas Discharged is larger, the new wind entered from kiln tail air inlet 1a is more, the aperture of air draft electric control valve 4a is less, the air capacity of discharging is less, water capacity with Bas Discharged is fewer, the new wind entered from kiln tail air inlet 1a is fewer, by the aperture of regulating air draft electric control valve 4a, can make the temperature of the total air channel of high case 3a Air and humidity in a suitable level.
As shown in Figures 1 and 2, the top, middle part of the total air channel 3a of high case is provided with pressure transmitter Y, the signal input part of the signal output part cut-in pressure intelligent controller YK1 of pressure transmitter Y, the analog output termination of pressure intelligent controller YK1 enters the pressure signal input of frequency converter IV, and the clutch end of frequency converter IV accesses and drive the motor of cooling blower 2.The blast that pressure transmitter Y surveys the total air channel 3a of high case offers pressure intelligent controller YK1, pressure intelligent controller YK1 compares and offers frequency converter IV by actual blast and setting blast, when actual blast is less than the setting blast, frequency converter IV will improve the rotating speed of cooling blower 2; When actual blast is greater than the setting blast, frequency converter IV will reduce the rotating speed of cooling blower 2.
The signal output part of pressure transmitter Y is the signal input part of cut-in pressure intelligent controller YK2 simultaneously, and the analog output termination of pressure intelligent controller YK2 enters the signal input part of air draft electric control valve 4a.The blast that pressure transmitter Y surveys the total air channel 3a of high case offers pressure intelligent controller YK2, pressure intelligent controller YK2 compares and offers air draft electric control valve 4a by actual blast and setting blast, when actual blast is less than the setting blast, the aperture of air draft electric control valve 4a turns down, and reduces air draft; When actual blast is greater than the setting blast, the aperture of air draft electric control valve 4a strengthens, and increases air draft.
As shown in Figures 1 and 3, the middle part of low case 1 width of mesh-belt kiln cooling section is provided with a plurality of and low case air channel electric control valve 1d low case temperature sensor T1, T2, T3, T4 one to one, low case temperature sensor T1, T2, T3, T4 along the mesh-belt kiln cooling section hang down that case 1 length direction is uniformly distributed and with each low case suspended hood 1b space; The signal output part of low case temperature sensor T1, T2, T3, T4 accesses respectively corresponding Intelligent temperature controller TK1, TK2, the signal input part of TK3, TK4, and the analog output end of each Intelligent temperature controller TK1, TK2, TK3, TK4 accesses respectively the signal input part of corresponding low case air channel electric control valve 1d.The temperature that low case temperature sensor T1, T2, T3, T4 survey in the low case 1 of mesh-belt kiln cooling section offers Intelligent temperature controller TK1, TK2, TK3, TK4, Intelligent temperature controller TK1, TK2, TK3, TK4 compare and offer corresponding low case air channel electric control valve 1d by actual temperature and design temperature, when actual temperature, during lower than design temperature, low case air channel electric control valve 1d will reduce aperture accordingly; When actual temperature, during higher than design temperature, low case air channel electric control valve 1d will strengthen aperture accordingly.
The middle part of high case 3 widths of mesh-belt kiln cooling section is provided with high case temperature sensor T5, T6, T7, T8, high case temperature sensor T5, T6, T7, T8 along high case 3 length directions of mesh-belt kiln cooling section be uniformly distributed and with each high case outlet housing 3d space; The signal output part of high case temperature sensor T5, T6, T7, T8 accesses respectively corresponding Intelligent temperature controller TK5, TK6, the signal input part of TK7, TK8, and the analog output end of each Intelligent temperature controller TK5, TK6, TK7, TK8 accesses respectively the signal input part of corresponding high case air channel electric control valve 3c.The temperature that high case temperature sensor T5, T6, T7, T8 survey in the high case 3 of mesh-belt kiln cooling section offers Intelligent temperature controller TK5, TK6, TK7, TK8, Intelligent temperature controller TK5, TK6, TK7, TK8 compare and offer corresponding high case air channel electric control valve 3c by actual temperature and design temperature, when actual temperature, during lower than design temperature, corresponding high case air channel electric control valve 3c will reduce aperture; When actual temperature, during higher than design temperature, corresponding high case air channel electric control valve 3c will strengthen aperture.
The PTG500 type blast pressure transmitter that above-mentioned pressure transmitter preferably uses Zhongshan City, Guangdong Province Guang Yi Electron equipment Co., Ltd to produce, the XSH/C/SIIIG1VON type pressure intelligent controller that the pressure intelligent controller preferably uses Wuhan Ke Qi Automation Control Co., Ltd to produce, the NVF2-2.5/PS4 type frequency converter that frequency converter preferably uses Zhengtai Electric Appliance Co., Ltd., Zhejiang to produce, the PT100 type thermal resistance that temperature sensor preferably uses Chongqing Chuan Yi Co., Ltd to produce, Intelligent temperature controller is preferably used day SRS14A type Intelligent temperature controller of island proper electricity Co., Ltd. production, the IQM10 type electric control valve that electric control valve preferably uses Britain Rothau gram company to produce.
The foregoing is only the present invention's better possible embodiments, non-so limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (8)
1. a mesh-belt kiln kiln flow field control system, comprise that the high case of mesh-belt kiln cooling section and mesh-belt kiln cooling section hang down case, guipure is positioned at the middle part of the high case short transverse of described mesh-belt kiln cooling section and low case extends along horizontal plane to described mesh-belt kiln cooling section, on described guipure, tiling has denitrating catalyst, it is characterized in that: the afterbody of the low case of described mesh-belt kiln cooling section is provided with the kiln tail air inlet wide with guipure, the lower end of described kiln tail air inlet is concordant with guipure, the roof of the low case of described mesh-belt kiln cooling section is provided with a plurality of low case suspended hoods, each described low case suspended hood lays respectively at the middle part of the low case width of described mesh-belt kiln cooling section and is uniformly distributed along the low case length direction of mesh-belt kiln cooling section, the upper port of each described low case suspended hood is connected with low case branch air duct respectively, be respectively equipped with low case air channel electric control valve in each described low case branch air duct, the upper port of each described low case branch air duct accesses respectively the total air channel of low case, the total air channel of described low case along continuous straight runs extends and is connected with the inlet scoop of cooling blower, the air outlet of described cooling blower accesses the total air channel of high case, the total air channel of described high case is positioned at described mesh-belt kiln cooling section high case top and extends along the high case length direction of mesh-belt kiln cooling section, the roof of the high case of described mesh-belt kiln cooling section is provided with a plurality of high case outlet housings, each described high case outlet housing lays respectively at the middle part of the high case width of described mesh-belt kiln cooling section and is uniformly distributed along the high case length direction of mesh-belt kiln cooling section, the upper port of each described high case outlet housing is connected with high case branch air duct respectively, be respectively equipped with high case air channel electric control valve in each described high case branch air duct, the upper port of each described high case branch air duct is connected with the total air channel of described high case respectively, the top of the total air channel of described high case entrance is connected with wind output channel, and the exhaust outlet place of described wind output channel is provided with the air draft electric control valve.
2. mesh-belt kiln kiln flow field control system according to claim 1 is characterized in that: the entrance of each described low case suspended hood all tilts to kiln tail direction, and each described high case outlet housing all tilts to the rightabout of kiln tail.
3. mesh-belt kiln kiln flow field control system according to claim 1, it is characterized in that: the top, middle part in the total air channel of described high case is provided with pressure transmitter, the signal input part of the signal output part cut-in pressure intelligent controller of described pressure transmitter, the analog output termination of described pressure intelligent controller enters the pressure signal input of frequency converter, and the clutch end of described frequency converter accesses and drive the motor of described cooling blower.
4. mesh-belt kiln kiln flow field control system according to claim 3, it is characterized in that: described pressure transmitter is PTG500 type blast pressure transmitter, described pressure intelligent controller is XSH/C/SIIIG1VON type pressure intelligent controller, and described frequency converter is NVF2-2.5/PS4 type frequency converter.
5. according to the described mesh-belt kiln kiln of any one in claim 1 to 4 flow field control system, it is characterized in that: the middle part of the low case width of described mesh-belt kiln cooling section is provided with a plurality of and described low case air channel electric control valve low case temperature sensor one to one, each described low case temperature sensor along the mesh-belt kiln cooling section hang down that the case length direction is uniformly distributed and with each described low case suspended hood space; The signal output part of each described low case temperature sensor accesses respectively the signal input part of corresponding Intelligent temperature controller, and the analog output end of each described Intelligent temperature controller accesses respectively the signal input part of corresponding low case air channel electric control valve.
6. mesh-belt kiln kiln flow field control system according to claim 5, it is characterized in that: described low case temperature sensor is PT100 type thermal resistance, described Intelligent temperature controller is SRS14A type Intelligent temperature controller, and described low case air channel electric control valve is IQM10 type electric control valve.
7. according to the described mesh-belt kiln kiln of any one in claim 1 to 4 flow field control system, it is characterized in that: the middle part of the high case width of described mesh-belt kiln cooling section is provided with a plurality of high case temperature sensors, each described high case temperature sensor along the high case length direction of mesh-belt kiln cooling section be uniformly distributed and with each described high case outlet housing space; The signal output part of each described high case temperature sensor accesses respectively the signal input part of corresponding Intelligent temperature controller, and the analog output end of each described Intelligent temperature controller accesses respectively the signal input part of corresponding high case air channel electric control valve.
8. mesh-belt kiln kiln flow field control system according to claim 7, it is characterized in that: described high case temperature sensor is PT100 type thermal resistance, described Intelligent temperature controller is SRS14A type Intelligent temperature controller, and described high case air channel electric control valve is IQM10 type electric control valve.
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| CN 201210090015 CN102636024B (en) | 2012-03-30 | 2012-03-30 | Control system for internal flow field of mesh-belt kiln |
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| CN101598502B (en) * | 2009-07-03 | 2011-05-11 | 霍镰泉 | Waste heat recovery system of kiln |
| CN101880124B (en) * | 2010-05-28 | 2012-11-07 | 武汉理工大学 | Annealing and cooling treatment system for two-stage hot wind circulation of glass ceramic tunnel crystallization kiln |
| CN201772762U (en) * | 2010-09-08 | 2011-03-23 | 佛山市中窑窑业发展有限公司 | Energy saving cooling system for a roller kiln tail |
| CN202063986U (en) * | 2010-10-12 | 2011-12-07 | 郑军标 | Novel mesh belt type carburizing furnace |
| CN202522057U (en) * | 2012-03-30 | 2012-11-07 | 江苏万德环保科技有限公司 | In-kiln flow field control system of mesh-belt kiln |
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Address after: 225200 No. 1, Hongyuan Road, high end equipment manufacturing industrial park, Shaobo Town, Jiangdu District, Yangzhou City, Jiangsu Province Patentee after: Jiangsu Fengye Environmental Technology Group Co.,Ltd. Address before: 225200 Shaobo Zhen Zhao Guan Jing Hang Cun, Jiangdu District, Yangzhou City, Jiangsu Province Patentee before: JIANGSU FENG YE TECHNOLOGY ENVIRONMENTAL PROTECTION GROUP Co.,Ltd. |
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