CN210374525U - Natural gas hot blast stove device suitable for grain drying-machine - Google Patents
Natural gas hot blast stove device suitable for grain drying-machine Download PDFInfo
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- CN210374525U CN210374525U CN201921004317.7U CN201921004317U CN210374525U CN 210374525 U CN210374525 U CN 210374525U CN 201921004317 U CN201921004317 U CN 201921004317U CN 210374525 U CN210374525 U CN 210374525U
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Abstract
The utility model relates to the field of hot blast stoves, in particular to a natural gas hot blast stove device suitable for a grain dryer, which comprises a stove body and a burner arranged at the front end of the stove body and used for burning natural gas; the furnace body comprises a preheating cylinder and a combustion cylinder which is coaxially arranged with the preheating cylinder and sleeved in the preheating cylinder, a preheating cavity is formed between the inner wall of the preheating cylinder and the outer wall of the combustion cylinder, a cold air inlet is formed at the front end of the preheating cylinder, an air outlet for conveying hot air into the dryer is formed at the rear end of the preheating cylinder, the air outlet is communicated with the preheating cavity, the front end of the combustion cylinder is connected with a burner, and the rear part of the combustion cylinder is communicated with the preheating cavity; the utility model discloses simple structure, work efficiency is high, and is with low costs, and the natural gas burning is abundant.
Description
Technical Field
The utility model relates to a hot-blast furnace field especially relates to a natural gas hot-blast furnace device suitable for grain drying-machine.
Background
The hot blast stove is an important component matched with a grain dryer and is used for providing enough heat for the dryer. Natural gas is used as a cleaner energy, and compared with the traditional coal resource, the natural gas has less pollution emission in the combustion process and is beneficial to improving the environmental pollution.
The existing natural gas hot blast stove usually adopts two modes of refractory material masonry and steel welding hearth. The hot blast furnace hearth built by the refractory bricks has better heat preservation effect, but has the defects of heavy structure, high manufacturing cost, long building period and the like; the welding furnace structure is light, and the on-site installation is swift, but current structure often appears that calorific loss is big, the natural gas burning is insufficient, still accompanies the risk that mars got into grain drying-machine and causes the potential safety hazard simultaneously.
Therefore, there is a need for improvement of the prior art to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, avoid hot-blast furnace work efficiency low, calorific loss big, and provided a natural gas hot-blast furnace device suitable for grain drying-machine, the utility model discloses simple structure, work efficiency is high, and is with low costs, and the natural gas burning is abundant.
The purpose of the utility model is realized through following measures: a natural gas hot blast stove device suitable for grain drying machine comprises a stove body, a burner arranged at the front end of the stove body for burning natural gas; the furnace body includes preheating section of thick bamboo, still includes and just overlaps the combustion cylinder in preheating section of thick bamboo with preheating section of thick bamboo coaxial arrangement, forms between preheating section of thick bamboo inner wall and the combustion cylinder outer wall and preheats the chamber, preheating section of thick bamboo front end is provided with the cold wind import, and preheating section of thick bamboo rear end is equipped with the air outlet that is used for carrying hot-blast in the drying-machine, and air outlet and preheating chamber intercommunication, the combustion cylinder front end is connected with the combustor, and the combustion cylinder rear portion communicates with preheating the chamber.
Preferably, the length of the combustion cylinder is smaller than that of the preheating cylinder, an air mixing cavity is arranged at an air outlet at the rear end of the combustion cylinder, and the air mixing cavity is communicated with the preheating cavity.
Preferably, the rear end of the combustion cylinder is provided with a fire damper, and the side of the rear end of the combustion cylinder is also provided with an air mixing hole communicated with the preheating cavity.
Preferably, the air mixing holes are uniformly distributed along the circumference of the combustion cylinder, and the air mixing holes are transverse strip holes.
Preferably, the preheating cylinder and the combustion cylinder are fixed through support columns which are annularly arranged.
Preferably, the cold air inlet is arranged on the end cover at the front end of the preheating cylinder, and the cold air inlet is uniformly distributed along the circumference of the end cover.
Preferably, an air volume regulating valve is arranged on the cold air inlet.
The utility model has the advantages that: the utility model has simple structure, convenient and quick installation, low cost and high working efficiency, can not only reduce the heat loss, but also prevent the spark from entering the grain dryer to cause potential safety hazard; cold air gets into from cold wind import and preheats the intracavity, through combustor burning natural gas, produce sufficient heat in the combustion cylinder, can preheat intracavity air, preheat the air current in the intracavity in the wind-mixing chamber of rear end, steam in the combustion cylinder can flow to the wind-mixing chamber through mixing the wind hole simultaneously, air after preheating and the steam of combustion cylinder are at the wind-mixing intracavity intensive mixing, produce required heat and send into to the grain drying-machine in from the air outlet, through preheating, the mode of mixing, cold wind heating efficiency is high, energy scattering and disappearing has been reduced.
Because the setting of combustion cylinder rear end fire damper, on the one hand can block the length of high temperature flame in the combustion cylinder, avoid flame to enter into the grain drying-machine, on the other hand is in the fire damper under the high temperature state all the time and can make the combustor produce the postcombustion by the natural gas that does not burn to the greatest extent, reduces fuel loss, thermal efficiency is improved.
Drawings
FIG. 1 is a front view of a hot blast stove assembly;
FIG. 2 is a left side view of a hot blast stove device in example 1;
fig. 3 is a left side view of the hot blast stove device in example 2.
In the figure: 1-furnace body, 2-burner, 3-preheating cylinder, 4-burning cylinder, 5-preheating cavity, 6-air mixing cavity, 7-cold air inlet, 8-air outlet, 9-fire damper, 10-air mixing hole, 11-supporting upright post and 12-air quantity regulating valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: as shown in fig. 1 and 2, a natural gas hot blast stove device suitable for a grain dryer comprises a stove body 1 and a burner 2 which is arranged at the front end of the stove body and is used for burning natural gas; the combustor 2 heats cold air in the furnace body 1 to generate heat required by the grain dryer and conveys hot air to the grain dryer. The furnace body includes preheating section of thick bamboo 3, still includes with preheating section of thick bamboo 3 coaxial arrangement and overlap the combustion cylinder 4 in preheating section of thick bamboo, preheats and forms preheating chamber 5 between 3 inner walls of section of thick bamboo and the 4 outer walls of combustion cylinder, preheats and is fixed through support post 11 between section of thick bamboo 3 and the combustion cylinder 4 in this embodiment, and support post 11 arranges along preheating section of thick bamboo inner wall annular, welds between preheating section of thick bamboo and combustion cylinder.
Preheating section of thick bamboo front end is equipped with cold wind import 7, preheating section of thick bamboo rear end is equipped with the air outlet 8 that is used for carrying hot-blast in the drying-machine, and air outlet 8 and preheating chamber 5 intercommunication, cold wind import 7 is located preheating section of thick bamboo front end cover, and cold wind import 7 is along end cover circumference evenly distributed, the combustion cylinder front end is connected with combustor 2, the combustion cylinder rear portion and preheating chamber intercommunication, cold wind gets into to preheating chamber 5 in from the cold wind import, a large amount of heats of effect of combustor produce in the combustion cylinder, thereby the cold wind that gets into preheating the intracavity can be by the primary heating.
The length of a combustion section of thick bamboo 4 in this embodiment is less than preheating section of thick bamboo 3 length, combustion section of thick bamboo rear end air outlet department is equipped with air mixing chamber 6, air mixing chamber 6 link up with preheating chamber 5 mutually, the warm wind flow direction air mixing intracavity after by the primary heating, the heat after the combustion section of thick bamboo burning also can flow to air mixing intracavity, thereby cold wind, warm wind, steam mix jointly, the misce bene, discharge from air outlet department, in the grain drying-machine is delivered to in the row, the heat utilizes fully, thermal scattering and disappearing has been reduced. In order to prevent that the flame of burning in the combustion cylinder also enters into grain drying-machine along with the heat, thereby the fire damper 9 is installed to the tip behind the combustion cylinder, combustion cylinder rear end lateral part still is equipped with the hole of mixing wind 10 with preheating the chamber intercommunication, mix wind hole 10 along combustion cylinder circumference evenly distributed, it is horizontal rectangular hole to mix the wind hole, fire damper 9 can directly block the flame in the combustion cylinder, shorten the distance of flame, simultaneously because the temperature of fire damper is higher, when the heat in the combustion cylinder collides with fire damper, can also make the unburnt natural gas postcombustion of combustor, the burning is abundant, the heat utilization is also sufficient, the heat in the combustion cylinder passes through the hole of mixing wind entering of lateral part and mixes the wind intracavity, mix together with the gas that preheats the intracavity, produce abundant steam.
Example 2: the following description focuses on differences from the natural gas hot-blast stove device according to embodiment 1, and describes a natural gas hot-blast stove device applied to a grain dryer in this embodiment.
As shown in fig. 1 and 3, an air volume adjusting valve 12 is installed on the cold air inlet, and the volume of the cold air entering from the cold air inlet can be controlled by controlling the air volume adjusting valve, so that the temperature of the hot air discharged from the air outlet can be adjusted, and the requirements of different dryers on the temperature and the volume of the hot air can be met.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. The utility model provides a natural gas hot-blast furnace device suitable for grain drying-machine which characterized in that: comprises a furnace body and a burner which is arranged at the front end of the furnace body and is used for burning natural gas; the furnace body includes preheating section of thick bamboo, still includes and just overlaps the combustion cylinder in preheating section of thick bamboo with preheating section of thick bamboo coaxial arrangement, forms between preheating section of thick bamboo inner wall and the combustion cylinder outer wall and preheats the chamber, preheating section of thick bamboo front end is provided with the cold wind import, and preheating section of thick bamboo rear end is equipped with the air outlet that is used for carrying hot-blast in the drying-machine, and air outlet and preheating chamber intercommunication, the combustion cylinder front end is connected with the combustor, and the combustion cylinder rear portion communicates with preheating the chamber.
2. The natural gas hot blast stove device suitable for the grain dryer according to claim 1, characterized in that: the length of the combustion barrel is smaller than that of the preheating barrel, an air mixing cavity is arranged at an air outlet at the rear end of the combustion barrel, and the air mixing cavity is communicated with the preheating cavity.
3. The natural gas hot blast stove device suitable for the grain dryer according to claim 1 or 2, characterized in that: the rear end part of the combustion cylinder is provided with a fire baffle, and the side part of the rear end of the combustion cylinder is also provided with a wind mixing hole communicated with the preheating cavity.
4. The natural gas hot blast stove device suitable for the grain dryer according to claim 3, characterized in that: the air mixing holes are uniformly distributed along the circumference of the combustion cylinder and are transverse long holes.
5. The natural gas hot blast stove device suitable for the grain dryer according to claim 1, characterized in that: the preheating cylinder and the combustion cylinder are fixed through support columns which are annularly arranged.
6. The natural gas hot blast stove device suitable for the grain dryer according to claim 1, characterized in that: the cold air inlet is arranged on the front end cover of the preheating cylinder and is uniformly distributed along the circumference of the end cover.
7. The natural gas hot blast stove device suitable for the grain dryer according to claim 6, characterized in that: and an air volume regulating valve is arranged on the cold air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004317.7U CN210374525U (en) | 2019-06-28 | 2019-06-28 | Natural gas hot blast stove device suitable for grain drying-machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004317.7U CN210374525U (en) | 2019-06-28 | 2019-06-28 | Natural gas hot blast stove device suitable for grain drying-machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210374525U true CN210374525U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921004317.7U Active CN210374525U (en) | 2019-06-28 | 2019-06-28 | Natural gas hot blast stove device suitable for grain drying-machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210374525U (en) |
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2019
- 2019-06-28 CN CN201921004317.7U patent/CN210374525U/en active Active
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