CN203345648U - Air-sealing and weighing integral spiral coal feeder - Google Patents
Air-sealing and weighing integral spiral coal feeder Download PDFInfo
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- CN203345648U CN203345648U CN 201320431110 CN201320431110U CN203345648U CN 203345648 U CN203345648 U CN 203345648U CN 201320431110 CN201320431110 CN 201320431110 CN 201320431110 U CN201320431110 U CN 201320431110U CN 203345648 U CN203345648 U CN 203345648U
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- cylindrical shell
- sealing
- sealing gland
- air
- weighing
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Abstract
The utility model belongs to an air-sealing and weighing integral spiral coal feeder, comprising a conveying device, a weighting device and an air-sealing device; the conveying device comprises a transverse drum body; a material inlet is arranged above one end of the drum body; a material outlet is arranged below the other end of the drum body; a rotary shaft with spiral blades on the face penetrates through the drum body; two ends of the rotary shaft respectively penetrate out of two end faces of the drum body; one end of the rotary shaft is connected with a driving motor; the weighing device comprises a tension sensor with the lower end being connected with the drum body in a suspending mode; the tension sensor is connected with a weighing metering instrument; the air-sealing device comprises an air-sealing shaft sleeve; the air-sealing shaft sleeve is sleeved on the rotary shaft at the outer sides of two end faces of the drum body; the outer end of the air-sealing shaft sleeve is closed; the inner end of the air-sealing shaft sleeve is connected with the end face of the drum body and is communicated with the interior cavity of the drum body; the air-sealing shaft sleeve is provided with an air-sealing nitrogen inlet. The air-sealing and weighing integral spiral coal feeder has the beneficial effects that the structure is simple, the design is smart, the weighing and air sealing are combined together, the safety performance is high, the metering is accurate and the material locking effect is good.
Description
Technical field
The utility model relates to a kind of sealing gland integral type screw-type coal distributor of weighing.
Background technology
Feeder is applicable to thermal powerplant coal furnace pulverized coal preparation system, can in very large load change scope, improve boiler performance, make the control of temperature of superheat, reheat temperature and pressure and temp more stable, fuel and required air quantity are more mated, and required air excess amount reduces, continuously coal supply, weighing is accurate, working stability, efficient energy-saving, be the advanced person's that matches with coal mill in the coal burning boiler pulverized coal preparation system metering coal supply equipment.
At present mostly common Gravimetric Coal Feeders is to adopt belt-type sealing Gravimetric Coal Feeders, and when the coal particle size of carrying is less or be powdery, belt type weighting coal feeder just there will be can't lock the phenomenon that material, measuring accuracy step-down, fault rate height even can't normally be used.
Summary of the invention
For solving above technical deficiency, the utility model provides a kind of safety performance high, accurate measurement, the effective sealing gland of the lock material integral type screw-type coal distributor of weighing.
The utility model is realized by following measures:
A kind of sealing gland of the present utility model integral type screw-type coal distributor of weighing comprises:
Feedway, comprise a horizontal cylindrical shell, and cylindrical shell one end top is provided with inlet point, under the other end
Side is provided with discharging opening, is penetrated with the rotating shaft of surface band helicallobe in cylindrical shell, and both ends of the surface and rotating shaft one end that the two ends of described rotating shaft pass respectively cylindrical shell are connected with drive motor;
Meausring apparatus, meausring apparatus, comprise that lower end hangs the pulling force sensor that connects cylindrical shell, described pulling force
Sensor is connected with the Weighing instrument; And
Air seal set, comprise the sealing gland axle sleeve, and described sealing gland axle sleeve is enclosed within the rotating shaft in the cylindrical shell both ends of the surface outside,
The sealing of sealing gland axle sleeve outer end, inner connection body end surface also is connected with the cylindrical shell internal cavity, is provided with the sealing gland nitrogen inlet on the sealing gland axle sleeve.
Above-mentioned cylinder body bottom is provided with the base for supporting be positioned under inlet point, and described base for supporting top is connected with barrel body rotation and bottom is fixed, and described pulling force sensor is suspended on the end top that cylindrical shell arranges discharging opening, and the connection cylindrical shell is hung in the pulling force sensor lower end.
The both ends of the surface of above-mentioned cylindrical shell are provided with the flange I, and the two ends of rotating shaft are through the flange I, and sealing gland axle sleeve the inner is connected on the flange I, and the outer end shutoff has the flange II, between sealing gland axle sleeve and rotating shaft, is filled with packing.
Gap between above-mentioned helicallobe edge and cylinder inner surface is 2 ~ 4mm, and the pitch of helicallobe is 245 ~ 255mm.
The outside two ends of above-mentioned cylindrical shell are overlapped respectively a steam tracing ring pipe are arranged, be horizontally connected with some steam tracing straight tubes between two steam tracing ring pipes, steam tracing ring pipe and steam tracing straight tube are connected, be provided with steam inlet on the steam tracing ring pipe of one end, on the steam tracing ring pipe of the other end, be provided with steam (vapor) outlet.
Above-mentioned cylindrical shell middle part is provided with the fire-fighting nitrogen inlet be communicated with the cylindrical shell internal cavity.
The two ends cover of above-mentioned rotating shaft has the bearing be arranged in bearing seat, and rotating shaft one end connects drive motor through bearing by coupler.
Be provided with access hole on above-mentioned cylindrical shell.
The beneficial effects of the utility model are:
The utility model is simple in structure, designs ingeniously, and the gentle sealed knot of weighing is combined, and having overcome to weigh and sealing gland can not be arranged on a technical barrier on cylindrical shell in the past.Because have air seal set, the coal in cylindrical shell can not arrive air by gap-contact, makes equipment have certain explosion-proof performance, and the degree of safety of equipment improves.Pitch between helicallobe diminishes, the gap smaller between helicallobe and barrel, the lock material effect of raising equipment.Be similar to lever-type weighting apparatus, make the measuring accuracy of equipment more accurate.
The accompanying drawing explanation
Fig. 1 is that master of the present utility model looks cross-sectional view.
Fig. 2 is the plan structure schematic diagram of invention.
Wherein: 1 cylindrical shell, 2 rotating shafts, 3 helicallobes, 4 base for supporting, 5 bearing seats, 6 sealing gland axle sleeves, 7 sealing gland nitrogen inlet, 8 flange I, 9 sling points, 10 access holes, 11 fire-fighting nitrogen inlet, 12 inlet points, 13 discharging openings, 14 coupler, 15 steam tracing straight tubes, 16 steam tracing ring pipes, 17 drive motor, 18 steam inlets, 19 steam (vapor) outlets, 20 flange II.
The specific embodiment
As shown in Figure 1, 2, a kind of sealing gland of the present utility model integral type screw-type coal distributor of weighing, comprise feedway, meausring apparatus and air seal set, and the gentle sealed knot of weighing is combined.
Feedway comprises a horizontal cylindrical shell 1, and cylindrical shell 1 one end tops are provided with inlet point 12, another
The end below is provided with discharging opening 13, is penetrated with the rotating shaft 2 of surface band helicallobe 3 in cylindrical shell 1, and helicallobe 3 extends to discharging opening 13 from inlet point 12.The two ends of rotating shaft 2 pass respectively the both ends of the surface of cylindrical shell 1, and the two ends cover of rotating shaft 2 has the bearing be arranged in bearing seat 5, and rotating shaft 2 one ends connect drive motor 17 through bearing by coupler 14.Drive motor 17 is quoted the dustproof and anti-explosion motor.Material enters from inlet point 12, and drive motor 17 drive shafts 2 are rotated, and helicallobe 3 promotes material and forwards.Gap between helicallobe 3 edges and cylindrical shell 1 inside face is 2 ~ 4mm, and the pitch of helicallobe 3 is 245 ~ 255mm.This size design can, under the prerequisite that does not produce friction, improve the lock material effect of equipment.Rotating shaft 2 has changed present stainless steel material with helicallobe 3 into by original carbon steel material, improves anticorrosive property and resistance to abrasion.
Meausring apparatus comprises that lower end hangs the pulling force sensor that connects cylindrical shell 1, and pulling force sensor is connected with the Weighing instrument.Can adopt a plurality of pulling force sensors to hang cylindrical shell 1 simultaneously and be measured, but the utility model employing is the weighting apparatus that is similar to the lever form.Specifically, cylindrical shell 1 bottom setting is positioned at the base for supporting 4 under inlet point 12, base for supporting 4 tops and cylindrical shell 1 are rotationally connected and bottom is fixed, and pulling force sensor is suspended on the end top that cylindrical shell 1 arranges discharging opening 13, and the pulling force sensor lower end is hung and connected cylindrical shell 1 from sling point 9.The weight signal of pulling force sensor is sent to the Weighing instrument, is calculated actual flow the cumulative production of material in equipment by the Weighing instrument.The impulse force that base for supporting 4 buffering materials produce while vertically falling from inlet point 12, thus make weighing more accurate.
Air seal set comprises sealing gland axle sleeve 6, and sealing gland axle sleeve 6 is enclosed within the rotating shaft 2 in the cylindrical shell 1 both ends of the surface outside
Upper, the sealing of sealing gland axle sleeve outer end, inner connection cylindrical shell 1 end face also is connected with cylindrical shell 1 internal cavity, is provided with sealing gland nitrogen inlet 7 on sealing gland axle sleeve 6.Specifically, the both ends of the surface of cylindrical shell 1 are provided with flange I 8, the two ends of rotating shaft 2 are through flange I 8, sealing gland axle sleeve 6 the inners are connected on flange I 8, the outer end shutoff has flange II 20, be filled with packing between sealing gland axle sleeve 6 and rotating shaft 2, packing can play certain sealing function, but maintain certain ventilation gap, the a small amount of nitrogen be filled with from sealing gland nitrogen inlet 7, enter into cylindrical shell 1 internal cavity through sealing gland axle sleeve 6, make pulverous coal dust be subject to the obstruct of nitrogen, prevent that coal dust from touching air, avoided the high temperature coal dust to meet air generation combustion explosion, thereby make equipment there is certain explosion-proof.And the measurement accuracy that a small amount of nitrogen also can't affect.
The outside two ends of cylindrical shell 1 are overlapped respectively a steam tracing ring pipe 16, be horizontally connected with some steam tracing straight tubes 15 between two steam tracing ring pipes 16, steam tracing ring pipe 16 and steam tracing straight tube 15 are connected, be provided with steam inlet 18 on the steam tracing ring pipe 16 of one end, on the steam tracing ring pipe 16 of the other end, be provided with steam (vapor) outlet 19.Under low temperature environment, the coal dust prevented from caking, improved work efficiency like this.
Cylindrical shell 1 middle part is provided with the fire-fighting nitrogen inlet 11 be communicated with cylindrical shell 1 internal cavity, if the interior excess Temperature of cylindrical shell 1 just is filled with a large amount of nitrogen from fire-fighting nitrogen inlet 11 to cylindrical shell in 1, avoids blasting.Also be provided with access hole 10 on cylindrical shell 1, convenient maintenance.
The above is only the preferred implementation of this patent; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the art of this patent principle; can also make some improvement and replacement, these improvement and replacement also should be considered as the protection domain of this patent.
Claims (8)
1. the sealing gland integral type screw-type coal distributor of weighing, is characterized in that, comprising:
Feedway, comprise a horizontal cylindrical shell, cylindrical shell one end top is provided with inlet point, and other end below is provided with discharging opening, be penetrated with the rotating shaft of surface band helicallobe in cylindrical shell, both ends of the surface and rotating shaft one end that the two ends of described rotating shaft pass respectively cylindrical shell are connected with drive motor;
Meausring apparatus, comprise that lower end hangs the pulling force sensor that connects cylindrical shell, and described pulling force sensor is connected with the Weighing instrument; And
Air seal set, comprise the sealing gland axle sleeve, and described sealing gland axle sleeve is enclosed within the rotating shaft in the cylindrical shell both ends of the surface outside, the sealing of sealing gland axle sleeve outer end, and inner connection body end surface also is connected with the cylindrical shell internal cavity, is provided with the sealing gland nitrogen inlet on the sealing gland axle sleeve.
2. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, it is characterized in that: described cylinder body bottom is provided with the base for supporting be positioned under inlet point, described base for supporting top is connected with barrel body rotation and bottom is fixed, described pulling force sensor is suspended on the end top that cylindrical shell arranges discharging opening, and the connection cylindrical shell is hung in the pulling force sensor lower end.
3. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, it is characterized in that: the both ends of the surface of described cylindrical shell are provided with the flange I, the two ends of rotating shaft are through the flange I, sealing gland axle sleeve the inner is connected on the flange I, the outer end shutoff has the flange II, between sealing gland axle sleeve and rotating shaft, is filled with packing.
4. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, it is characterized in that: the gap between described helicallobe edge and cylinder inner surface is 2 ~ 4mm, the pitch of helicallobe is 245 ~ 255mm.
5. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, it is characterized in that: the outside two ends of described cylindrical shell are overlapped respectively a steam tracing ring pipe are arranged, be horizontally connected with some steam tracing straight tubes between two steam tracing ring pipes, steam tracing ring pipe and steam tracing straight tube are connected, be provided with steam inlet on the steam tracing ring pipe of one end, on the steam tracing ring pipe of the other end, be provided with steam (vapor) outlet.
6. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, it is characterized in that: described cylindrical shell middle part is provided with the fire-fighting nitrogen inlet be communicated with the cylindrical shell internal cavity.
7. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, it is characterized in that: the two ends cover of described rotating shaft has the bearing be arranged in bearing seat, and rotating shaft one end connects drive motor through bearing by coupler.
8. the sealing gland integral type screw-type coal distributor of weighing according to claim 1, is characterized in that: on described cylindrical shell, be provided with access hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320431110 CN203345648U (en) | 2013-07-19 | 2013-07-19 | Air-sealing and weighing integral spiral coal feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320431110 CN203345648U (en) | 2013-07-19 | 2013-07-19 | Air-sealing and weighing integral spiral coal feeder |
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| Publication Number | Publication Date |
|---|---|
| CN203345648U true CN203345648U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320431110 Expired - Fee Related CN203345648U (en) | 2013-07-19 | 2013-07-19 | Air-sealing and weighing integral spiral coal feeder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960458A (en) * | 2015-07-10 | 2015-10-07 | 成都科力夫科技有限公司 | Transport cart capable of automatically dumping quantitatively |
| CN107216898A (en) * | 2017-07-18 | 2017-09-29 | 洛阳建材建筑设计研究院有限公司 | A kind of oil shale swinging gas retort anoxybiotic sealing technology |
-
2013
- 2013-07-19 CN CN 201320431110 patent/CN203345648U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960458A (en) * | 2015-07-10 | 2015-10-07 | 成都科力夫科技有限公司 | Transport cart capable of automatically dumping quantitatively |
| CN107216898A (en) * | 2017-07-18 | 2017-09-29 | 洛阳建材建筑设计研究院有限公司 | A kind of oil shale swinging gas retort anoxybiotic sealing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20200719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |