CN100545064C - A kind of easily oxidizable powder fluidization feedway - Google Patents
A kind of easily oxidizable powder fluidization feedway Download PDFInfo
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- CN100545064C CN100545064C CNB2004100172451A CN200410017245A CN100545064C CN 100545064 C CN100545064 C CN 100545064C CN B2004100172451 A CNB2004100172451 A CN B2004100172451A CN 200410017245 A CN200410017245 A CN 200410017245A CN 100545064 C CN100545064 C CN 100545064C
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Abstract
The invention discloses a kind of easily oxidizable powder fluidization feedway, belong to the load transfer device technical field.Comprise storehouse pump top-guiding type fluidization delivery system, nitrogen recycling system, nitrogen air compensating system, nitrogen balance system.Employing has reduced the delivery system drag losses with the close phase transporting pattern of the dynamic pressure fluidization of storehouse pump top-guiding type, has reduced the delivery duct vibrations, and the consumption nitrogen amount is low; Nitrogen reclaims by compressor set, has solved airflow balance problem in the delivery technology; Adopt the production domesticization device, in the reliability of advance that has guaranteed technology and equipment, reduced investment cost of equipment significantly.
Description
Technical field
The invention belongs to the load transfer device technical field, be specially a kind of easily oxidizable powder fluidization feedway.
Background technology
The easily oxidizable powder need adopt nitrogen protection when strength is carried, mode of movement commonly used has rotovalve to carry, send jar pulse conveying and force feed.What rotovalve was carried general employing is import equipment, though performance is pretty good, needed cost is quite expensive; Send jar pulse conveying device middle or small operational throughput and in, can adopt closely the time, but be not suitable for being used in the conveying project of big operational throughput, long distance; The material of force feed device, gas mixability are lower, and generally below 10kg material/kg gas, gas consumption is very big, and energy consumption is also high, also needs bigger separation and dusting equipment.Add this more scabrous problem of nitrogen recycling and intrasystem airflow balance, the ideal equipment that does not still have easily oxidizable powder strength to carry at present.
Summary of the invention
The technical problem to be solved in the present invention is that design provides a kind of easily oxidizable powder fluidization feedway, to overcome the defective that exists in the prior art.
Described a kind of easily oxidizable powder fluidization feedway comprises storehouse pump top-guiding type fluidization delivery system, nitrogen recycling system, nitrogen air compensating system, nitrogen balance system, is specially:
1) storehouse pump top-guiding type fluidization delivery system: the intermediate bunker outlet connects fluidized pump through first Pneumatic butterfly valve, first storage tank outlet is leaded up to first reducing valve, first electromagnetic valve and is connected with fluidized pump, first pneumatic ball valve, and another road exports by second reducing valve, second electromagnetic valve, first Laval nozzle and first pneumatic ball valve and is connected and connects the purpose feed bin by delivery duct.
2) nitrogen recycling system: purpose feed bin nitrogen outlet is connected with first storage tank by first dust exhaustor, second dust exhaustor, oxygen analyzer, compressor set, and the fluidized pump nitrogen outlet is connected with first storage tank by the 8th electromagnetic valve, second dust exhaustor, oxygen analyzer, compressor set;
3) nitrogen air compensating system: first storage tank outlet is leaded up to the 3rd reducing valve, the 3rd electromagnetic valve and is connected with the purpose feed bin, and the 4th reducing valve is passed through on another road, the 4th electromagnetic valve is connected with the compressor set front end;
4) nitrogen balance system: source nitrogen is connected with the compressor set front end by first storage tank, the 5th electromagnetic valve, second storage tank, the 6th electromagnetic valve.
Described a kind of easily oxidizable powder fluidization feedway is provided with first pressure transformer, second pressure transformer, the 3rd pressure transformer, the 4th pressure transformer respectively on first storage tank, second storage tank, fluidized pump, the purpose feed bin.
Be connected between the described a kind of easily oxidizable powder fluidization feedway, first storage tank and first dust exhaustor the 9th electromagnetic valve is set.
Be connected between the described a kind of easily oxidizable powder fluidization feedway, first storage tank and second dust exhaustor the tenth electromagnetic valve is set.
Be connected between the described a kind of easily oxidizable powder fluidization feedway, purpose feed bin and first dust exhaustor cyclone is set.
First storage tank and second storage tank are the high pressure tanks of two parallel connections in this easily oxidizable powder fluidization feedway, and one is the buffering storage tank of carrying gas, i.e. first storage tank; Another is an auxiliary gas tank, i.e. second storage tank.This easily oxidizable powder fluidization feedway is in service, satisfy to carry with the buffering storage tank with gas simultaneously, if having the then compressed machine supercharging of tolerance more than needed to inject in the auxiliary gas tank in the system stores, instantaneous or temporary transient negative pressure appears in system, then by the buffering storage tank tonifying Qi of auxiliary gas tank, with equilibrium air pressure to low pressure.Because of factors such as return-air hysteresis cause the temporary transient tolerance overbalance of system, can make air compensating system drop into excessive fresh nitrogen outside system in the prior art course of conveying, the function of auxiliary gas tank solves this contradiction exactly at once.And according to the material level of feed bin height, it is intact until capacity consumption that auxiliary gas tank can store nitrogen amount more than needed neatly, mends fresh nitrogen again from system outside, can reduce the nitrogen input to greatest extent like this, raising recycling rate, energy savings.
The present invention adopts with the close phase transporting pattern of the dynamic pressure fluidization of storehouse pump top-guiding type, has reduced the delivery system drag losses, has reduced the delivery duct vibrations, and the consumption nitrogen amount is low; Nitrogen reclaims by compressor set, has solved airflow balance problem in the delivery technology; Adopt the production domesticization device, in the reliability of advance that has guaranteed technology and equipment, reduced investment cost of equipment significantly.
Description of drawings
Fig. 1 is an easily oxidizable powder fluidization feedway connection structure scheme drawing.
The specific embodiment
This easily oxidizable powder fluidization feedway, constitute by storehouse pump top-guiding type fluidization delivery system, nitrogen recycling system, nitrogen air compensating system, nitrogen balance system, connect by delivery duct between each device such as first storage tank 1, second storage tank 7, fluidized pump 19, intermediate bunker 30, purpose feed bin 29 and the parts.First storage tank 1, second storage tank 7 are provided with first pressure transformer 2, second pressure transformer 5 respectively; The 3rd pressure transformer 21, the 4th pressure transformer 24 are set respectively on fluidized pump 19, the purpose feed bin 29.Intermediate bunker 30 outlets connect fluidized pump 19 through first Pneumatic butterfly valve 23, the outlet of first storage tank 1 is leaded up to first reducing valve 17, first electromagnetic valve 18 and is connected with fluidized pump 19, first pneumatic ball valve 22, another road is connected with purpose feed bin 29 by second reducing valve 16, second electromagnetic valve 15, first Laval nozzle 14,20 is level-sensing device, and 26 is the continous way level-sensing device.The nitrogen recycling system: purpose feed bin 29 nitrogen outlets are connected with first storage tank 1 by first dust exhaustor 25, second dust exhaustor 12, oxygen analyzer 11, compressor set 10, and fluidized pump 19 nitrogen outlets are connected with first storage tank 1 by the 8th electromagnetic valve 13, second dust exhaustor 12, oxygen analyzer 11, compressor set 10.The outlet of first storage tank 1 is leaded up to the 3rd reducing valve 27, the 3rd electromagnetic valve 28 and is connected with purpose feed bin 29, and the 4th reducing valve 3 is passed through on another road, the 4th electromagnetic valve 4 is connected with compressor set 10.Be connected between purpose feed bin 29 and first dust exhaustor 25 cyclone 31 is set.Be connected respectively between first storage tank 1 and first dust exhaustor 25, second dust exhaustor 12 the 9th electromagnetic valve 32, the tenth electromagnetic valve 33 are set.The nitrogen balance system: source nitrogen is connected with compressor set 10 by first storage tank 1, the 5th electromagnetic valve 6, second storage tank 7, the 6th electromagnetic valve 9.
Working process: before delivery system brings into operation, carry out nitrogen replacement earlier, the compressed nitrogen source of the gas advances first storage tank 1, and by 8 emptyings of the 7th electromagnetic valve, after oxygen analyzer 11 showed that nitrogen content reaches requirement, the displacement stage finished, and enters delivery phase after circulating.Open the 8th electromagnetic valve 13 earlier, the easily oxidizable powder advances fluidized pump 19 through first Pneumatic butterfly valve 23 in the intermediate bunker 30, and storehouse pump level-sensing device 20 is reported to the police, and closes the 8th electromagnetic valve 13, first Pneumatic butterfly valve 23, stops charging, exhaust; Open first electromagnetic valve 18 and carry out fluidisation, by 21 controls of the 3rd pressure transformer, when pressure reaches setting value, open second electromagnetic valve 15, first pneumatic ball valve 22, carry beginning, open the 9th electromagnetic valve 32, the tenth electromagnetic valve 33, first dust exhaustor 25, second dust exhaustor 12 are carried out the blowback cleaning.The nitrogen that enters in the purpose feed bin 29 inserts muffler through the 8th electromagnetic valve 13, laggard first storage tank 1 of compressed unit 10 compressions of these nitrogen.For keeping intrasystem nitrogen balance, the two-way tonifying Qi, the one tunnel advances 29 tonifying Qi of purpose feed bin to keep pressure-fired in the feed bin through the 3rd reducing valve 27, the 3rd electromagnetic valve 28; Another Lu Jingdi four reducing valves 3, the 4th electromagnetic valve 4 carry out the nitrogen of system's tonifying Qi with the replenishment system loss.Pressure in first storage tank 1, second storage tank 7, fluidized pump 19, the purpose feed bin 29 is measured by first pressure transformer 2, second pressure transformer 5, the 3rd pressure transformer 21, the 4th pressure transformer 24 respectively, the material level signal of pressure signal, fluidized pump and purpose feed bin and the signal of oxygen analyzer are controlled the on-off action of each electromagnetic valve, operated pneumatic valve by PLC, concrete control circuit structure belongs to general known technology, does not repeat them here.
Claims (5)
1. an easily oxidizable powder fluidization feedway comprises storehouse pump top-guiding type fluidization delivery system, nitrogen recycling system, nitrogen air compensating system, nitrogen balance system, it is characterized in that:
1) storehouse pump top-guiding type fluidization delivery system: intermediate bunker (30) outlet connects fluidized pump (19) through first Pneumatic butterfly valve (23), first reducing valve (17) is leaded up in first storage tank (1) outlet, first electromagnetic valve (18) and fluidized pump (19), first pneumatic ball valve (22) connects, another road is by second reducing valve (16), second electromagnetic valve (15), first Laval nozzle (14) is connected with first pneumatic ball valve (22) outlet and connects purpose feed bin (29) by delivery duct
2) nitrogen recycling system: purpose feed bin (29) nitrogen outlet is connected with first storage tank (1) by first dust exhaustor (25), second dust exhaustor (12), oxygen analyzer (11), compressor set (10), fluidized pump (19) nitrogen outlet is connected with first storage tank (1) by the 8th electromagnetic valve (13), second dust exhaustor (12), oxygen analyzer (11), compressor set (10)
3) nitrogen air compensating system: first storage tank (1) outlet is leaded up to the 3rd reducing valve (27), the 3rd electromagnetic valve (28) and is connected with purpose feed bin (29), and the 4th reducing valve (3) is passed through on another road, the 4th electromagnetic valve (4) is connected with compressor set (10) front end,
4) nitrogen balance system: source nitrogen is connected with compressor set (10) front end by first storage tank (1), the 5th electromagnetic valve (6), second storage tank (7), the 6th electromagnetic valve (9).
2. a kind of easily oxidizable powder fluidization feedway as claimed in claim 1 is characterized in that: first pressure transformer (2), second pressure transformer (5), the 3rd pressure transformer (21), the 4th pressure transformer (24) are set respectively on first storage tank (1), second storage tank (7), fluidized pump (19), the purpose feed bin (29).
3. a kind of easily oxidizable powder fluidization feedway as claimed in claim 1 is characterized in that: be connected between first storage tank (1) and first dust exhaustor (25) the 9th electromagnetic valve (32) is set.
4. a kind of easily oxidizable powder fluidization feedway as claimed in claim 1 is characterized in that: be connected between first storage tank (1) and second dust exhaustor (12) the tenth electromagnetic valve (33) is set.
5. a kind of easily oxidizable powder fluidization feedway as claimed in claim 1 is characterized in that: be connected between purpose feed bin (29) and first dust exhaustor (25) cyclone (31) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100172451A CN100545064C (en) | 2004-03-29 | 2004-03-29 | A kind of easily oxidizable powder fluidization feedway |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100172451A CN100545064C (en) | 2004-03-29 | 2004-03-29 | A kind of easily oxidizable powder fluidization feedway |
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| Publication Number | Publication Date |
|---|---|
| CN1562719A CN1562719A (en) | 2005-01-12 |
| CN100545064C true CN100545064C (en) | 2009-09-30 |
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| CNB2004100172451A Expired - Fee Related CN100545064C (en) | 2004-03-29 | 2004-03-29 | A kind of easily oxidizable powder fluidization feedway |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105731077B (en) * | 2016-04-11 | 2017-12-01 | 江阴市高达输送机械科技有限公司 | Coal dust Geldart-D particle nitrogen circulation utilizes system |
| CN106766684A (en) * | 2017-03-20 | 2017-05-31 | 江苏辉迈粉体科技有限公司 | Dry humidity control system of battery powder material |
| CN107934567A (en) * | 2017-12-08 | 2018-04-20 | 北京神雾电力科技有限公司 | Low order fine coal Geldart-D particle lifting system and method |
| CN108328338B (en) * | 2018-03-20 | 2023-09-08 | 天津市津能工程管理有限公司 | Powder conveying system based on nitrogen gas airtight conveying and pressurizing recycling |
| CN111112575A (en) * | 2020-02-25 | 2020-05-08 | 乔治费歇尔金属成型科技（苏州）有限公司 | Temperature control system of die casting die |
| CN112719267A (en) * | 2020-12-31 | 2021-04-30 | 天津镭明激光科技有限公司 | Large-scale 3D metal printing complete machine powder circulation system with workpiece taking station function and circulation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3708208A (en) * | 1970-11-02 | 1973-01-02 | Free Flow Packaging Corp | System for selective distribution of light weight materials |
| CN1161931A (en) * | 1997-01-03 | 1997-10-15 | 浙江大学 | PTA material air-knife type pulse conveying device for tanker |
| US6382881B1 (en) * | 1998-05-11 | 2002-05-07 | Aluminium Pechiney | Process for conveyance of powder materials in a hyperdense bed and potential fluidization device for embodiment of this process |
| CN2548971Y (en) * | 2002-06-26 | 2003-05-07 | 浙江大学 | Fluidization conveying for powder of benzene dicarbonic acid and nitrogen gas recovery device |
-
2004
- 2004-03-29 CN CNB2004100172451A patent/CN100545064C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3708208A (en) * | 1970-11-02 | 1973-01-02 | Free Flow Packaging Corp | System for selective distribution of light weight materials |
| CN1161931A (en) * | 1997-01-03 | 1997-10-15 | 浙江大学 | PTA material air-knife type pulse conveying device for tanker |
| US6382881B1 (en) * | 1998-05-11 | 2002-05-07 | Aluminium Pechiney | Process for conveyance of powder materials in a hyperdense bed and potential fluidization device for embodiment of this process |
| CN2548971Y (en) * | 2002-06-26 | 2003-05-07 | 浙江大学 | Fluidization conveying for powder of benzene dicarbonic acid and nitrogen gas recovery device |
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