CN202709162U - Biomass boiler feed structure with ejector - Google Patents
Biomass boiler feed structure with ejector Download PDFInfo
- Publication number
- CN202709162U CN202709162U CN 201220326970 CN201220326970U CN202709162U CN 202709162 U CN202709162 U CN 202709162U CN 201220326970 CN201220326970 CN 201220326970 CN 201220326970 U CN201220326970 U CN 201220326970U CN 202709162 U CN202709162 U CN 202709162U
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- pipe
- elephant trunk
- biomass boiler
- feed
- air
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Abstract
The utility model relates to the field of biomass boiler feed equipment, in particular to a biomass boiler feed structure with an ejector. The biomass boiler feed structure with the ejector can guarantee materials to enter a boiler smoothly, solves the problem that the high-temperature smoke spouted reversely inside a furnace of the boiler stops the materials from falling, and the occurrence of backfire is effectively prevented. The biomass boiler feed equipment comprises a feed pipe, a discharging elephant trunk and an air nozzle. The discharging elephant trunk is obliquely placed on a feed port of the furnace, the feed pipe is vertically inserted into the discharging elephant trunk, and the air nozzle is installed at the tail end of the discharging elephant trunk and is located on the back side of a discharge port of the feed pipe. The biomass boiler feed structure with the ejector is characterized in that the air nozzle comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the air outlet pipe through a cone-shaped tube, and the cone-shaped tube shrinks gradually along the direction of air out and shares the same axial with the air inlet pipe and the air outlet pipe.
Description
Technical field
The utility model relates to the biomass boiler feeding device field, is specially a kind of biomass boiler feeding structure with injector.
Background technology
Biomass boiler has a kind of mode that adopts the elephant trunk charging, i.e. the elephant trunk 2 of one section inclination, material utilize its deadweight to slip into boiler 7 along elephant trunk 2, see Fig. 3, simultaneously at the tail end of elephant trunk 2, axially add air blower pipe 10 along elephant trunk and advance stove with the boosting material.Its defective is: the malleation that exists in boiler 7 burner hearths so that inner flue gas of the stove in elephant trunk 2, regurgitate, because the density of biomass fuel is little, light weight, the flue gas of regurgitating in the elephant trunk 2 can hinder material, make material can not enter boiler 7 unblockedly, thereby in elephant trunk 2 interior generation feed blocking phenomenons; If the high-temperature flue gas of regurgitating in the burner hearth in addition enters 1 of feed pipe and easily lights biomass fuel, initiation fire, thereby have potential safety hazard.Although at the free gas blower pipes 10 of elephant trunk 2, this normal air pipe only has the effect of blowing simply material, but can not effectively prevent tempering, and solve the problem that the flue gas regurgitated is held material.
Summary of the invention
For the problems referred to above, the utility model provides a kind of biomass boiler feeding structure with injector, its interaction energy is guaranteed the unimpeded boiler that enters of material, solves to regurgitate the problem that high-temperature flue gas hinders the material whereabouts in the boiler hearth box, and effectively prevents the generation of tempering phenomenon.
A kind of biomass boiler feeding structure with injector, it comprises feed pipe, discharging elephant trunk and air nozzle, described discharging elephant trunk tilts to be installed on the boiler feed mouth, described feed pipe vertically is plugged in described discharging elephant trunk, described air nozzle is installed on described discharging elephant trunk end and is positioned at the discharging opening rear side of described feed pipe, it is characterized in that: described air nozzle comprises air inlet pipe and escape pipe, and described air inlet pipe and escape pipe are by coaxial and be connected along the conical pipe of outgassing direction convergent.
It is further characterized in that:
The cone angle of described conical pipe
αBe 10 °～30 °, the escape pipe length of described air nozzle
lBe described escape pipe diameter
d0.6～1.2 times.
After adopting structure of the present utility model, pressure-air sprays at a high speed to the discharging elephant trunk by the air nozzle, because the air inlet pipe of air nozzle and escape pipe are by coaxial and be connected along the conical pipe of outgassing direction convergent, according to hydromechanical Bernoulli's theorem, form dynamic pressure in the nozzle exit, thereby can form a local decompression district in the nozzle exit, this negative pressure can be inhaled the material in the feed pipe exit on top lower, is beneficial to the unimpeded conveying of material; After pressure-air sprays a segment distance, Speed Reduction, dynamic pressure becomes static pressure, thereby forms one section zone of positive pressure at the charging aperture place near boiler, thereby effectively stops the high-temperature flue gas of burner hearth to be regurgitated in elephant trunk and feed pipe, effectively prevents the generation of tempering phenomenon.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the Nozzle structure schematic diagram;
Fig. 3 is conventional elephant trunk feeding structure schematic diagram.
The specific embodiment
See Fig. 1 and Fig. 2, the utility model comprises feed pipe 1, discharging elephant trunk 2 and air nozzle 3, discharging elephant trunk 2 tilts to be installed on boiler feed mouth 9, feed pipe 1 vertically is plugged in discharging elephant trunk 2, air nozzle 3 is installed on discharging elephant trunk 2 ends and is positioned at discharging opening 8 rear sides of feed pipe, air nozzle 3 comprises air inlet pipe 4 and escape pipe 6, and air inlet pipe 4 and escape pipe 6 are by coaxial and be connected the cone angle of conical pipe 5 along the conical pipe 5 of outgassing direction convergent
αBe 10 °～30 °, escape pipe 6 length of air nozzle
lBe the escape pipe diameter
d0.6～1.2 times.
Carrying out blanking is, nozzle adopts the higher air of blast, and pressure is more than 4000Pa, and the air velocity of ejection is at 60～120m/s.
Claims (2)
1. biomass boiler feeding structure with injector, it comprises feed pipe, discharging elephant trunk and air nozzle, described discharging elephant trunk tilts to be installed on the boiler feed mouth, described feed pipe vertically is plugged in described discharging elephant trunk, described air nozzle is installed on described discharging elephant trunk end and is positioned at the discharging opening rear side of described feed pipe, it is characterized in that: described air nozzle comprises air inlet pipe and escape pipe, and described air inlet pipe and escape pipe are by coaxial and be connected along the conical pipe of outgassing direction convergent.
2. a kind of biomass boiler feeding structure with injector according to claim 1 is characterized in that the cone angle of described conical pipe
αBe 10 °～30 °, the escape pipe length of described air nozzle
lBe described escape pipe diameter
d0.6～1.2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220326970 CN202709162U (en) | 2012-07-09 | 2012-07-09 | Biomass boiler feed structure with ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220326970 CN202709162U (en) | 2012-07-09 | 2012-07-09 | Biomass boiler feed structure with ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202709162U true CN202709162U (en) | 2013-01-30 |
Family
ID=47589459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220326970 Expired - Lifetime CN202709162U (en) | 2012-07-09 | 2012-07-09 | Biomass boiler feed structure with ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202709162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734826A (en) * | 2012-07-09 | 2012-10-17 | 无锡锡东能源科技有限公司 | Biomass boiler feeding structure with ejector |
-
2012
- 2012-07-09 CN CN 201220326970 patent/CN202709162U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734826A (en) * | 2012-07-09 | 2012-10-17 | 无锡锡东能源科技有限公司 | Biomass boiler feeding structure with ejector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yuan Shaosheng Inventor after: You Wei Inventor after: Huang Zhi Inventor after: Wang Yongnan Inventor before: Yuan Shaosheng Inventor before: You Wei Inventor before: Huang Zhi Inventor before: Wang Yongnan |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |