CN105253629A - Lobe type concentrated phase powder pumping system - Google Patents
Lobe type concentrated phase powder pumping system Download PDFInfo
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- CN105253629A CN105253629A CN201510638755.9A CN201510638755A CN105253629A CN 105253629 A CN105253629 A CN 105253629A CN 201510638755 A CN201510638755 A CN 201510638755A CN 105253629 A CN105253629 A CN 105253629A
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- lobe
- jet pipe
- vaporizing chamber
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Abstract
A lobe type concentrated phase powder pumping system comprises a pneumatic transmission device, a conveying pipeline and blowing assisting devices. The pneumatic transmission device comprises a pump body; a sending vessel vaporizing chamber is arranged on the lower portion of the pump body; a fluidized bed is arranged on the upper portion of the sending vessel vaporizing chamber; the lateral face and the bottom of the sending vessel vaporizing chamber are provided with a nitrogen fluidization pipe and a nitrogen bottom blowing pipe respectively; the nitrogen bottom blowing pipe penetrates through the sending vessel vaporizing chamber; a lobe ejector is arranged at the upper end of the fluidized bed; a mixing pipe is arranged above the lobe ejector; the upper end of the mixing pipe and one end of a conveying articulated chute are sealed and fixed; the other end of the conveying articulated chute upwards extends out of the pump body; a feeding inlet is formed in the top of the pump body; a nitrogen pressure feed pipe is arranged on one side of the feeding inlet; the lobe ejector is in a periodic lobe shape, and the lateral wall from an inlet at the lower end to an outlet at the upper end is of a smooth transition structure. The ejector is of the periodic lobe structure, so that the airflow mixing and ejection performance is improved; the ejection ratio is improved by more than four times through spraying of lobes, concentrated phase conveying is formed, the conveying capacity is increased, and splash pollution caused when materials enter iron ladles is reduced.
Description
Technical field
The present invention relates to a kind of granular material blowing system, belong to mass transport field, particularly relate to and a kind ofly pulverized limestone is transported to the wave-pieced type dense-phase powder pumparound in iron bag, molten steel being carried out to desulfurization by nitrogen.
Background technology
Material-handling pump is the visual plant in hot metal in steelmaking pretreatment KR method desulphurization production technology, its effect be by pulverized limestone (CaO) by nitrogen injection, force feed, help to blow and be transported in iron bag, make the effective desulfurization of molten iron, meet Production requirement.This pump has now been widely used in the ash transfer system such as cement, thermal power plant, compare with traditional negative-pressure powder load transfer device, the traffic capacity of material-handling pump obtains reinforcement, but then, because its operational throughput is lower, fed distance is short, and splash dust pollution is large, and pipe choking seriously waits and also greatly constrains its development.
Chinese patent (application number 201520027461.8, authorized announcement date on June 24th, 2015) open " a kind of storehouse formula Geldart-D particle pump configuration ", it comprises the pump housing, in the described pump housing, top is provided with inlet valve, its other end of described inlet valve is connected with electromagnetic slide valve, the outer upper right side of the described pump housing is connected with exhaust gear, the described pump housing outer lower-left end is connected with material conveying pipe, gas bag is along separate routes provided with on the right of the pump housing, described shunt gas bag is connected with the pump housing by the forcing pipe of left upper end, gas transmission pipeline is provided with in the middle of described shunt gas bag, its other end of described gas transmission pipeline is connected with jet pipe, the other end of described jet pipe stretches into pump body.Should
utility modeldelivery pump structure simple, cost is low, avoids delivery duct latch up phenomenon, solves Geldart-D particle failure of pump.But still do not solve existing transmission pump and system operational throughput is lower, fed distance is shorter and the heavy-polluted problem of splash.
Summary of the invention
The invention provides a kind of wave-pieced type dense-phase powder pumparound, for solving in prior art, air-transport system operational throughput is lower, fed distance is shorter and the heavy-polluted problem of splash, inject ratio is improved preferably by arranging lobe eductor in the pump housing, and then significantly improve operational throughput, pulsed auxiliary blowing apparatus is set on delivery duct simultaneously, avoids delivery duct to block and improve fed distance.
In order to realize object of the present invention, by the following technical solutions:
Wave-pieced type dense-phase powder pumparound, comprise Pneumatic conveyer, delivery duct and along delivery duct move towards install auxiliary blowing apparatus, described Pneumatic conveyer comprises the pump housing, pump housing bottom arranges and sends ware vaporizing chamber, the top sending ware vaporizing chamber arranges fluid bed, its side and bottom are respectively arranged with fluidisation nitrogen tube and bottom blowing nitrogen tube, described bottom blowing nitrogen tube is through sending ware vaporizing chamber, the upper end of fluid bed arranges lobe eductor, the top of lobe eductor arranges mixing tube, the upper end of mixing tube and one end of conveying chute seal fixing, the other end of conveying chute protrudes upward pump housing outside, the top of the described pump housing has inlet point, the side of inlet point arranges force feed nitrogen tube, described lobe eductor is periodicity lobe shape, its lower end import is smooth excessiveness structure to the sidewall of upper end outlet.
Key point of the present invention, that the through-type jet pipe in raw material pumping installation is designed to lobe jet pipe, introduce lobe in material pumping device in hot metal in steelmaking pre-treating process to spray, Gas Mixing in Cross flow ability is improved by periodic wave valve structure, strengthen injection performance, lobe is sprayed and is improved inject ratio more than 4 times, injection powder material concentration increases, operational throughput increases, form Condensed transportation, the powder material concentration of conveying increases and after speed raising, material enters pressure increase during iron bag, splash is polluted and reduces.In addition, the problem of pipe choking can be brought after Dense Phase Material Conveying, therefore on delivery duct, multiple auxiliary blowing apparatus is set along material trend, auxiliary blowing apparatus comprises gas bag and jet pipe, jet pipe is convergent-divergent channel structure, and be arranged in outer tube, gas bag is communicated with outer tube, pulse valve and solenoid pilot valve are installed in the upper end of outer tube and jet pipe, to convergent-divergent channel successively interval winding-up hyprsonic air pulse, can solve pipeline heap sum that concentrated phase material brings originally often help blow enter bag expulsion problem, than originally often help blow valve system more can disturbance strength delivery speed field, pressure field, the powerful bank evacuating accumulation, effectively prevent putty, help that to blow performance more superior.Convergent-divergent channel axis becomes the angle of 0 ~ 35 ° during with the axis of delivery duct, to the anti-accumulated plugging of delivery duct and splash pollution effects better.
In order to realize object of the present invention further, can also by the following technical solutions:
Wave-pieced type dense-phase powder pumparound as above, the upper end outlet area of described lobe eductor is equal with lower end inlet-duct area.
Wave-pieced type dense-phase powder pumparound as above, described auxiliary blowing apparatus comprises gas bag, and gas bag has admission port, vertical jet pipe is set in the middle part of it, the outer setting outer tube of jet pipe, outer tube is communicated with gas bag, and jet pipe and outer tube install pulse valve and solenoid pilot valve in upper end; Described outer tube and delivery duct seal fixing, and the lower end of jet pipe is stretched in delivery pipe.
Wave-pieced type dense-phase powder pumparound as above, described jet pipe is convergent-divergent channel, and convergent-divergent channel axis becomes the angle of 0 ~ 35 ° with the axis of delivery duct.
Wave-pieced type dense-phase powder pumparound as above, described auxiliary blowing apparatus is provided with multiple along delivery duct trend, and adjacent auxiliary blowing apparatus is spaced apart 3 ~ 5m and arranges.
Beneficial effect of the present invention:
1, introduce lobe in the material pumping device in hot metal in steelmaking pre-treating process to spray, Gas Mixing in Cross flow ability is improved by periodic wave valve structure, strengthen injection performance, lobe is sprayed and is improved inject ratio more than 4 times, and injection powder material concentration increases, and operational throughput increases, form Condensed transportation, the powder material concentration of conveying increases and after speed raising, material enters pressure increase during iron bag, splash is polluted and reduces.
2, delivery duct arranges multiple auxiliary blowing apparatus along material trend, auxiliary blowing apparatus comprises gas bag and jet pipe, jet pipe is convergent-divergent channel structure, and be arranged in outer tube, gas bag is communicated with outer tube, pulse valve and solenoid pilot valve are installed in the upper end of outer tube and jet pipe, to convergent-divergent channel successively interval winding-up hyprsonic air pulse, can solve pipeline heap sum that concentrated phase material brings originally often help blow enter bag expulsion problem, than originally often help blow valve system more can disturbance strength delivery speed field, pressure field, the powerful bank evacuating accumulation, effectively prevent putty, help that to blow performance more superior.Convergent-divergent channel axis becomes the angle of 0 ~ 35 ° during with the axis of delivery duct, to the anti-accumulated plugging of delivery duct and splash pollution effects better.
3, by molten iron pre-treating process, pulverized limestone (CaO) is transported to desulfurization in iron bag by nitrogen by the present invention, desulphurization chemical unit time addition can be improved, KR each desulfurization 7 ~ 9 minutes pulverized limestone time of conveying, reduce under similarity condition and add more than 4 minutes desulphurization chemical time, and reduce hot metal temperature drop and splash, there is great economic benefit.
4, principle of design of the present invention is reliable, and structure is simple, has very strong practicality and application value.
Accompanying drawing explanation
fig. 1it is structural representation of the present invention
figure.
fig. 2be
fig. 1described in Pneumatic conveyer structure for amplifying signal
figure
fig. 3be
fig. 2in A look to amplification
figure.
fig. 4be
fig. 1described in auxiliary blowing apparatus structure for amplifying signal
figure.
accompanying drawingmark: 1-Pneumatic conveyer, 2-delivery duct, 3-auxiliary blowing apparatus, the 11-pump housing, 12-sends ware vaporizing chamber, 13-fluid bed, 14-fluidisation nitrogen tube, 15-bottom blowing nitrogen tube, 16-lobe jet pipe, 17-mixing tube, 18-conveying chute, 19-inlet point, 20-force feed nitrogen tube, 31-gas bag, 32-admission port, 33-jet pipe, 34-outer tube, 35-pulse valve, 36-solenoid pilot valve, the import of 161-lower end, 162-upper end outlet.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with in the embodiment of the present invention
accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
as Fig. 1,
fig. 2shown in, a kind of wave-pieced type dense-phase powder of the present embodiment pumparound, comprise Pneumatic conveyer 1, delivery duct 2 and along delivery duct 2 move towards install auxiliary blowing apparatus 3, described Pneumatic conveyer 1 comprises the pump housing 11, the pump housing 11 bottom arranges and sends ware vaporizing chamber 12, the top sending ware vaporizing chamber 12 arranges fluid bed 13, its side and bottom are respectively arranged with fluidisation nitrogen tube 14 and bottom blowing nitrogen tube 15, described bottom blowing nitrogen tube 15 is through sending ware vaporizing chamber 12, the upper end of fluid bed 13 arranges lobe eductor, the top of lobe eductor arranges mixing tube 17, the upper end of mixing tube 17 and one end of conveying chute 18 seal fixing, the other end of conveying chute 18 protrudes upward the pump housing 11 outside, the top of the described pump housing 11 has inlet point 19, the side of inlet point 19 arranges force feed nitrogen tube 20,
as Fig. 3shown in, lobe eductor is periodicity lobe shape, the sidewall of its lower end import 161 to upper end outlet is smooth excessiveness structure, overlook from the top of lobe eductor, its upper end outlet presents symmetrical petal shape, the outwardly directed partial shape crest of petal, the connecting portion between petal forms trough, and the sidewall between the periphery of petal shape and lower end import is the sidewall of smooth excessiveness.
Specifically, a kind of wave-pieced type dense-phase powder pumparound that the present embodiment provides, through-type jet pipe 33 in raw material pumping installation is designed to lobe jet pipe 16, introduce lobe in material pumping device in hot metal in steelmaking pre-treating process to spray, Gas Mixing in Cross flow ability is improved by periodic wave valve structure, strengthen injection performance, lobe is sprayed and is improved inject ratio more than 4 times, injection powder material concentration increases, operational throughput increases, form Condensed transportation, after the powder material concentration increase of conveying and speed improve, material enters pressure increase during iron bag, splash is polluted reduce.During use, follow these steps to operation:
1, work starts, and opens fluidisation nitrogen tube 14 air feed, by sending ware vaporizing chamber 12 air-flow, material on fluid bed 13 is swelled into fluidisation state;
2, auxiliary blowing apparatus 3 is opened;
3, bottom blowing nitrogen tube 15 is opened to lobe eductor 16 for pneumatic control injection, mixed airflow;
4, the control cock of opening force feed nitrogen tube 20 provides force feed air-flow.
5, the control cock opening inlet point 19 carries out feeding.
6, after dnockout terminates, reversed sequence closes inlet point 19 successively, force feed nitrogen tube 20, lobe are sprayed, the control cock of fluidisation nitrogen tube 14 and auxiliary blowing apparatus 3.
as Fig. 3shown in, upper end outlet 162 area of lobe eductor described in the present embodiment and lower end import 161 area equation.The area equation of upper end outlet 162 and lower end import 161, can ensure when not underspeeding, inject ratio, obtain good Gas Mixing in Cross flow ability.
as Fig. 4shown in, described in the present embodiment, auxiliary blowing apparatus 3 comprises gas bag 31, gas bag 31 has admission port 32, vertical jet pipe 33 is set in the middle part of it, the outer setting outer tube 34 of jet pipe 33, outer tube 34 is communicated with gas bag 31, and jet pipe 33 and outer tube 34 install pulse valve 35 and solenoid pilot valve 36 in upper end; Described outer tube 34 and delivery duct 2 seal fixing, and the lower end of jet pipe 33 is stretched in delivery pipe.The problem of pipe choking can be brought after Dense Phase Material Conveying, therefore on delivery duct 2, multiple auxiliary blowing apparatus 3 is set along material trend, auxiliary blowing apparatus 3 comprises gas bag 31 and jet pipe 33, jet pipe 33 is convergent-divergent channel structure, and be arranged in outer tube 34, gas bag 31 is communicated with outer tube 34, outer tube 34 installs pulse valve 35 and solenoid pilot valve 36 with the upper end of jet pipe 33, to convergent-divergent channel successively interval winding-up hyprsonic air pulse, can solve pipeline heap sum that concentrated phase material brings originally often help blow enter bag expulsion problem, than originally often help blow valve system more can disturbance strength delivery speed field, pressure field, the powerful bank evacuating accumulation, effectively prevent putty, help that to blow performance more superior.
Wave-pieced type dense-phase powder pumparound as above, described jet pipe 33 is convergent-divergent channel, and convergent-divergent channel axis becomes the angle of 30 ° with the axis of delivery duct 2.Convergent-divergent channel axis becomes the angle of 30 ° during with the axis of delivery duct 2, to the anti-accumulated plugging of delivery duct 2 and splash pollution effects better.
as Fig. 1shown in, auxiliary blowing apparatus 3 described in the present embodiment is provided with multiple along delivery duct 2 trend, and adjacent auxiliary blowing apparatus 3 is spaced apart 4m and arranges.On delivery duct 2, interval arranges multiple auxiliary blowing apparatus 3, can extend the fed distance of material preferably, avoids blocking.
By in molten iron pre-treating process, pulverized limestone (CaO) is transported to desulfurization in iron bag by nitrogen by the present invention, desulphurization chemical unit time addition can be improved, KR each desulfurization 7 ~ 9 minutes pulverized limestone time of conveying, reduce under similarity condition and add more than 4 minutes desulphurization chemical time, and reduce hot metal temperature drop and splash, there is great economic benefit.Principle of design of the present invention is reliable in addition, and structure is simple, has very strong practicality and application value.
The technology contents of the not detailed description of the present invention is known technology.
Claims (5)
1. wave-pieced type dense-phase powder pumparound, it is characterized in that, comprise Pneumatic conveyer, delivery duct and along delivery duct move towards install auxiliary blowing apparatus, described Pneumatic conveyer comprises the pump housing, pump housing bottom arranges and sends ware vaporizing chamber, the top sending ware vaporizing chamber arranges fluid bed, its side and bottom are respectively arranged with fluidisation nitrogen tube and bottom blowing nitrogen tube, described bottom blowing nitrogen tube is through sending ware vaporizing chamber, lobe eductor is installed in the upper end of fluid bed, the top of lobe eductor arranges mixing tube, the upper end of mixing tube and one end of conveying chute seal fixing, the other end of conveying chute protrudes upward pump housing outside, the top of the described pump housing has inlet point, the side of inlet point arranges force feed nitrogen tube, described lobe eductor is periodicity lobe shape, its lower end import is smooth excessiveness structure to the sidewall of upper end outlet.
2. wave-pieced type dense-phase powder pumparound according to claim 1, is characterized in that, the upper end outlet area of described lobe eductor is equal with lower end inlet-duct area.
3. wave-pieced type dense-phase powder pumparound according to claim 1 and 2, it is characterized in that, described auxiliary blowing apparatus comprises gas bag, gas bag has admission port, vertical jet pipe is set in the middle part of it, the outer setting outer tube of jet pipe, outer tube is communicated with gas bag, and jet pipe and outer tube install pulse valve and solenoid pilot valve in upper end; Described outer tube and delivery duct seal fixing, and the lower end of jet pipe is stretched in delivery pipe.
4. wave-pieced type dense-phase powder pumparound according to claim 3, is characterized in that, described jet pipe is convergent-divergent channel, and convergent-divergent channel axis becomes the angle of 0 ~ 35 ° with the axis of delivery duct.
5. wave-pieced type dense-phase powder pumparound according to claim 4, is characterized in that, described auxiliary blowing apparatus is provided with multiple along delivery duct trend, and adjacent auxiliary blowing apparatus is spaced apart 3 ~ 5m and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638755.9A CN105253629B (en) | 2015-09-30 | 2015-09-30 | Wave-pieced type dense-phase powder pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638755.9A CN105253629B (en) | 2015-09-30 | 2015-09-30 | Wave-pieced type dense-phase powder pumping system |
Publications (2)
| Publication Number | Publication Date |
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| CN105253629A true CN105253629A (en) | 2016-01-20 |
| CN105253629B CN105253629B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510638755.9A Expired - Fee Related CN105253629B (en) | 2015-09-30 | 2015-09-30 | Wave-pieced type dense-phase powder pumping system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356851A (en) * | 2019-07-25 | 2019-10-22 | 江苏大学 | A kind of powder material issuance device and method |
| CN113526140A (en) * | 2021-07-07 | 2021-10-22 | 长兴新城环保有限公司 | Anti-blocking mechanism of pneumatic ash conveying bin pump |
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| CN2317217Y (en) * | 1997-01-14 | 1999-05-05 | 冶金工业部钢铁研究总院 | High efficiency storehouse type pump conveying material in bulk |
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| CN202704570U (en) * | 2012-06-28 | 2013-01-30 | 苏州欧蓝森环境设备有限公司 | Pneumatic conveying and supplying generator |
| CN102976106A (en) * | 2012-11-16 | 2013-03-20 | 浙江莱德桑机械有限公司 | Fluidization cabinet type delivery pump and method thereof |
| CN204021931U (en) * | 2014-06-06 | 2014-12-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of Material pipeline and auxiliary device thereof |
| CN204522540U (en) * | 2015-01-30 | 2015-08-05 | 成都易态科技有限公司 | Gas-filtering device and blowback system thereof |
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2015
- 2015-09-30 CN CN201510638755.9A patent/CN105253629B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317217Y (en) * | 1997-01-14 | 1999-05-05 | 冶金工业部钢铁研究总院 | High efficiency storehouse type pump conveying material in bulk |
| CA2802262A1 (en) * | 2010-05-28 | 2011-12-01 | Kiekert Ag | Actuating drive for a motor vehicle |
| CN102705272A (en) * | 2011-08-31 | 2012-10-03 | 韩铁夫 | Jet pump |
| CN102635578A (en) * | 2011-12-23 | 2012-08-15 | 南京航空航天大学 | Multilevel lobed nozzle ejector with secondary-fluid sucking function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356851A (en) * | 2019-07-25 | 2019-10-22 | 江苏大学 | A kind of powder material issuance device and method |
| CN110356851B (en) * | 2019-07-25 | 2024-03-01 | 江苏大学 | Powder material distributing device and method |
| CN113526140A (en) * | 2021-07-07 | 2021-10-22 | 长兴新城环保有限公司 | Anti-blocking mechanism of pneumatic ash conveying bin pump |
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| CN105253629B (en) | 2017-10-27 |
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