CN202848659U - Pulverized coal stable feeding intermediate bunker device for pulverized coal bunker feeding system - Google Patents
Pulverized coal stable feeding intermediate bunker device for pulverized coal bunker feeding system Download PDFInfo
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- CN202848659U CN202848659U CN201220432000.5U CN201220432000U CN202848659U CN 202848659 U CN202848659 U CN 202848659U CN 201220432000 U CN201220432000 U CN 201220432000U CN 202848659 U CN202848659 U CN 202848659U
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- pulverized coal
- feeding
- bunker
- bin
- intermediate bin
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Abstract
The utility model relates to a pulverized coal stable feeding intermediate bunker device for a pulverized coal bunker feeding system. The pulverized coal stable feeding intermediate bunker device is characterized by comprising a quantified feeding valve, a pulverized coal intermediate bunker, weighing sensors and a control cabinet which is provided with a weighing control circuit and control buttons. The pulverized coal intermediate bunker is a reverse cone-shaped tank body. An intermediate bunker feed inlet and a dust collection connecting port are formed in the top face of the pulverized coal intermediate bunker. A feed inlet of the quantified feeding valve is connected in a discharge outlet side of a pulverized coal bunker of the pulverized coal bunker feeding system. A discharge outlet of the quantified feeding valve is connected in the intermediate bunker feed inlet through a flexible connecting piece. The pulverized coal intermediate bunker is installed on a support frame plate through at least three weighing sensors used for supporting a bunker body. An intermediate discharge outlet which is connected in a feed inlet side of the pulverized coal bunker of the pulverized coal bunker feeding system is formed in the bottom face of the pulverized coal intermediate bunker. The weighing sensors and the quantified feeding valve are respectively connected with the weighing control circuit. The weighing control circuit comprises a programmable logic controller (PLC) and a frequency converter. The pulverized coal stable feeding intermediate bunker device has the advantages that pulverized coal stable feeding is achieved and normal operation of a cement calcining furnace is ensured.
Description
Technical field
The utility model relates to the Pulverized Coal Bin feed facility of cement industry, relates in particular to a kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system.
Background technology
Cement kiln is to be sent in the stove after by the pulverized coal scale weighing by Pulverized Coal Bin with the Pulverized Coal Bin feeding system in the cement industry, generally adopt at present the special pulverized coal scale of Fes, adopt the direct coupled mode of elephant trunk between Pulverized Coal Bin and the pulverized coal scale, coal dust enters elephant trunk from Pulverized Coal Bin under Action of Gravity Field, but on elephant trunk, also be connected with dust-collecting pipe, pipeline integral body is y-type structure, thereby because being connected as a single entity, elephant trunk and dust-collecting pipe cause dust-collecting pipe to be easy to stop up, the unnecessary gas that causes spilling in scale is trapped in the elephant trunk, can not in time be discharged from, form vapour lock, coal dust can't enter elephant trunk from Pulverized Coal Bin; The moisture content of coal dust is large in addition, and poor fluidity only depends on gravity can not stablize lower slide, also is the key factor that coal dust can not stably feeding.
The utility model content
Main purpose of the present utility model is for the problems referred to above, a kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system is provided, this device is added in the existing Pulverized Coal Bin feeding system, can realizes the coal dust stably feeding, guarantee that cement kiln normally moves.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system, the control housing that it is characterized in that comprising quantitative feeding valve, coal dust intermediate bin, LOAD CELLS and be provided with Weighing control circuit and control button, described coal dust intermediate bin is the turbination tank body, and is provided with intermediate bin inlet point and dust-collecting pipe communication port at end face; Described quantitative feeding valve inlet point is connected to the Pulverized Coal Bin discharging opening side of described feeding system, and its discharging opening is connected on the described intermediate bin inlet point by flexible connecting member; The coal dust intermediate bin is placed on the support frame plates by at least three LOAD CELLS that support warehouse, and coal dust intermediate bin bottom surface is the intermediate bin discharging opening that is connected to the pulverized coal scale inlet point side of described feeding system; Described LOAD CELLS and quantitative feeding valve connect respectively the Weighing control circuit.
Described Weighing control circuit comprises PLC controller and frequency converter, and the input end of described PLC controller connects LOAD CELLS and control button, and its mouth connects described quantitative feeding valve by frequency converter.
Described control button comprises shift knob, feeding speed governing button, manual/auto switching button.
Described flexible connecting member is rubber expansion joint.
The beneficial effects of the utility model are: provide a kind of coal dust stably feeding intermediate bin device, this device is arranged between the Pulverized Coal Bin and pulverized coal scale of existing Pulverized Coal Bin feeding system, and employing comprises the Weighing control circuit of PLC controller and frequency converter, control the speed of the motor speed of quantitative feeding valve by the weight signal that gathers the coal dust intermediate bin, make the coal dust bed of material in the coal dust intermediate bin be stabilized in a suitable height, and leave a small amount of swapace on intermediate bin top, unnecessary gas can compile and in time discharges by dust-collecting pipe at this, coal dust in the coal dust intermediate bin can be drawn off under Action of Gravity Field smoothly, thereby realize the stably feeding of coal dust, guarantee that cement kiln normally moves.
Description of drawings
Fig. 1 is main TV structure scheme drawing of the present utility model;
Fig. 2 is the structure for amplifying scheme drawing of coal dust intermediate bin part among Fig. 1;
Fig. 3 is the birds-eye view of Fig. 2;
Fig. 4 is application scheme drawing of the present utility model;
Fig. 5 is control circuit constructional drawing of the present utility model.
Among the figure: 1 quantitative feeding valve, 11 feeding valve inlet points, 12 feeding valve discharging openings, 2 rubber expansion joints, 3 coal dust intermediate bins, 31 dust-collecting pipe communication ports, 32 intermediate bin inlet points, 33 intermediate bin discharging openings, the 41-43 support, 51-53 LOAD CELLS, 6 support frame plates, 7 control housings, the 8PLC controller, 9 frequency converters, 10 shift knobs, 11 feeding speed governing buttons, 12 manual/auto switching buttons, 13 pulverized coal scales, 14 Pneumatic gate valves, 15 dust-collecting pipes, 16 Pulverized Coal Bin, 17 rubber expansion joints.
Below in conjunction with drawings and Examples the utility model is described in detail.
The specific embodiment
Fig. 1～5 illustrate a kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system, the control housing that it is characterized in that comprising quantitative feeding valve 1, coal dust intermediate bin 3, LOAD CELLS and be provided with Weighing control circuit and control button, above-mentioned coal dust intermediate bin 3 is turbination tank bodies, and is provided with intermediate bin inlet point 32 and dust-collecting pipe communication port 31 at end face; Above-mentioned quantitative feeding valve inlet point 11 is connected to the Pulverized Coal Bin 16 discharging opening sides of above-mentioned feeding system, and feeding valve discharging opening 12 is connected on the intermediate bin inlet point 32 by flexible connecting member; In this example, flexible connecting member has adopted rubber expansion joint 2.Coal dust intermediate bin 3 is placed on the support frame plates 6 by at least three LOAD CELLS that support warehouse, has adopted three LOAD CELLS 51-53 to center on the uniform setting of warehouse by support 41-43 respectively in this example, and stable support is lived the coal dust intermediate bin.The bottom surface of coal dust intermediate bin 3 is the intermediate bin discharging opening 33 pulverized coal scale 13, side that is connected to above-mentioned feeding system; Above-mentioned LOAD CELLS 51-53 and quantitative feeding valve 1 connect respectively the Weighing control circuit.
Fig. 5 shows the Weighing control circuit structure diagram of above-mentioned intermediate bin device, this Weighing control circuit comprises PLC controller 8 and frequency converter 9, the input end of PLC controller 8 connects LOAD CELLS 51-53 and control button, its mouth connects above-mentioned quantitative feeding valve 1 by frequency converter, and actual is the motor that connects quantitative feeding valve.Above-mentioned control button comprises shift knob 10, feeding speed governing button 11 and manual/auto switching button 12.This device is adjusted automatically in the next parameter according to setting of auto state; Can be by the 11 control feeding operations of feeding speed governing button under manual state.
In this example, it is WLF-500 that quantitative feeding valve has adopted model, and the feeding ability is the quantitative feeding valve of 0-25t/h.Quantitatively feeding valve has the effect of lock wind and forced feeding, and lock wind function has avoided the interior unnecessary gas of intermediate bin that the blanking of Pulverized Coal Bin is impacted; The forced feeding function has overcome at coal dust moisture content large, under the operating mode of poor fluidity, and defective that can not stably feeding.It is the LOAD CELLS of SB14, range 1t that LOAD CELLS has adopted the model of German Flintec company.
Principle of the present utility model is, use comprises the Weighing control circuit of PLC controller and frequency converter, carrying out PID by the weight signal that gathers coal dust intermediate bin 3 regulates, control the speed of the motor speed of quantitative feeding valve 1, make the coal dust bed of material in the coal dust intermediate bin 3 be stabilized in a suitable height, a small amount of swapace is left on intermediate bin top, unnecessary gas can compile at this, in time discharge by dust-collecting pipe 15 from dust-collecting pipe communication port 31, coal dust in the coal dust intermediate bin 3 can draw off under Action of Gravity Field smoothly like this, thereby realizes the stably feeding of coal dust.
Below be the concrete application example of the utility model under automatic control state.
Fig. 4 is application structure scheme drawing of the present utility model.Wherein Pulverized Coal Bin 16, be connected to the Pneumatic gate valve 14 at Pulverized Coal Bin discharging opening place, the rubber expansion joint 17 that pulverized coal scale 13 and pulverized coal scale inlet point connect is the device of existing Pulverized Coal Bin feeding system, the inlet point 32 of quantitative feeding valve 1 of the present utility model is connected above-mentioned Pneumatic gate valve 14 discharging openings, coal dust intermediate bin discharging opening 33 is connected pulverized coal scale 13 by rubber expansion joint 17, and dust-collecting pipe 15 is installed on the dust-collecting pipe communication port 31 of coal dust intermediate bin 3, whole system can formally be carried out work.
In the present embodiment, coal dust intermediate bin 3 design volumes are 3m
З, coal dust unit weight 0.5t/m
З, design loading coal dust weight is 1.5t in the storehouse, adds that the storehouse deadweight is about 0.6t, full and down amounts to 2.1t; Selected range is 3 of the LOAD CELLS of 1t, and total range is 1t * 3=3t, is 120 ° of spacings around warehouse and distributes, and whole warehouse is supported.Lower bound according to coal dust carrying capacity in the control storehouse is 40%, height is limited to 80% and calculates, and the carrying capacity of coal dust intermediate bin is set as lower bound 0.6t approximately, high limit 1.2t, the weight that detects on the LOAD CELLS like this is at 1.2t-1.8t, and quantitatively the range of motor speeds of feeding valve is 0-1440rpm.
In whole control process, the storehouse inner top remains in return space, 20% space, can make the state of material gas mixing in this sedimentation, separation, unnecessary gas is in time discharged from dust-collecting pipe, coal dust in the coal dust intermediate bin is the pure gravity state that does not have gas supporting power like this, just can draw off smoothly, thus the stably feeding of realization coal dust.
When needs are manually adjusted, then manual/auto switching button 12 is screwed into manual position, at this moment, can realize quantitative feeding valve feed control by manually adjusting feeding speed governing button 11.When need carry out plant maintenance, close Pneumatic gate valve 14 and get final product.
Above content is not that structure of the present utility model, shape and material are done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (4)
1. coal dust stably feeding intermediate bin device that is used for the Pulverized Coal Bin feeding system, the control housing that it is characterized in that comprising quantitative feeding valve, coal dust intermediate bin, LOAD CELLS and be provided with Weighing control circuit and control button, described coal dust intermediate bin is the turbination tank body, and is provided with intermediate bin inlet point and dust-collecting pipe communication port at end face; Described quantitative feeding valve inlet point is connected to the Pulverized Coal Bin discharging opening side of described feeding system, and its discharging opening is connected on the described intermediate bin inlet point by flexible connecting member; The coal dust intermediate bin is placed on the support frame plates by at least three LOAD CELLS that support warehouse, and coal dust intermediate bin bottom surface is the intermediate bin discharging opening that is connected to the pulverized coal scale inlet point side of described feeding system; Described LOAD CELLS and quantitative feeding valve connect respectively the Weighing control circuit.
2. a kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system according to claim 1, it is characterized in that described Weighing control circuit comprises PLC controller and frequency converter, the input end of described PLC controller connects LOAD CELLS and control button, and its mouth connects described quantitative feeding valve by frequency converter.
3. a kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system according to claim 1 and 2 is characterized in that described control button comprises shift knob, feeding speed governing button, manual/auto switching button.
4. a kind of coal dust stably feeding intermediate bin device for the Pulverized Coal Bin feeding system according to claim 1 and 2 is characterized in that described flexible connecting member is rubber expansion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220432000.5U CN202848659U (en) | 2012-08-28 | 2012-08-28 | Pulverized coal stable feeding intermediate bunker device for pulverized coal bunker feeding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220432000.5U CN202848659U (en) | 2012-08-28 | 2012-08-28 | Pulverized coal stable feeding intermediate bunker device for pulverized coal bunker feeding system |
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| CN202848659U true CN202848659U (en) | 2013-04-03 |
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| CN201220432000.5U Expired - Lifetime CN202848659U (en) | 2012-08-28 | 2012-08-28 | Pulverized coal stable feeding intermediate bunker device for pulverized coal bunker feeding system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480732A (en) * | 2015-07-27 | 2016-04-13 | 西安建筑科技大学 | Intermittent quantitative delivery system and control method thereof |
| CN105540079A (en) * | 2016-02-25 | 2016-05-04 | 中冶华天工程技术有限公司 | Circular storing-proportioning integrated stock bin |
| CN105737187A (en) * | 2016-04-27 | 2016-07-06 | 江西荣恩能源科技有限公司 | Storage device for powdery materials |
| CN109550581A (en) * | 2019-01-09 | 2019-04-02 | 鞍山冀东水泥有限责任公司 | Vertical pulverizing mill enters mill lock wind blanking system |
-
2012
- 2012-08-28 CN CN201220432000.5U patent/CN202848659U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480732A (en) * | 2015-07-27 | 2016-04-13 | 西安建筑科技大学 | Intermittent quantitative delivery system and control method thereof |
| CN105480732B (en) * | 2015-07-27 | 2017-12-05 | 西安建筑科技大学 | A kind of batch (-type) dose delivery system and its control method |
| CN105540079A (en) * | 2016-02-25 | 2016-05-04 | 中冶华天工程技术有限公司 | Circular storing-proportioning integrated stock bin |
| CN105737187A (en) * | 2016-04-27 | 2016-07-06 | 江西荣恩能源科技有限公司 | Storage device for powdery materials |
| CN109550581A (en) * | 2019-01-09 | 2019-04-02 | 鞍山冀东水泥有限责任公司 | Vertical pulverizing mill enters mill lock wind blanking system |
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Granted publication date: 20130403 |
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| CX01 | Expiry of patent term |