JPS5984009A - Vaporizing burner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an evaporative burner.

In the vaporizing burner of a conventionally known grain drying device, as described in, for example, Japanese Utility Model Application No. 55-64622, kerosene supplied from a kerosene supply device is stirred by rotation fs9 using a rotary heating bowl. The combustion air for vaporizing the kerosene and gasifying it used a part of the powerful air flowing in the through cylinder.

This horizontal formation causes the following defects: In the ventilation cylinder of the circulation-type humidity-controlled grain drying device, at least a strong wind of 1 to 2 m3/sec per ton of unhulled rice is flowing. , if you use that wind, you can naturally gasify kerosene.
However, with this type, when the amount of oil is reduced to make the flame smaller, the wind may be too strong and cause a misfire.

Therefore, in the present invention, a blower for blowing combustion air is separately provided. In this way, it is possible to send primary air as desired to the kerosene in the vaporizing burner, so unlike conventional vaporizing burners, it is possible to obtain something that burns with a blue flame. However, when burning with a blue flame, the ventilation tube surrounding the vaporizing burner becomes red-hot, especially the connection part with the drying device. , primary air is taken in through the double wall structure.

In the present invention, a vaporizing burner is provided in a ventilation tube so as to form a drying air passage between an inner wall of the ventilation tube and an outer periphery of the vaporization burner, and the ventilation tube has a double-sided A vaporizing burner with a wall structure, and
A vaporizing burner having a primary air intake in the double wall structure; and a vaporizing burner having a primary air intake in the double wall structure and an opening/closing valve in the intake. It is.

To explain with the drawings, Fig. 1 is a vertical cross-sectional view of a humidity control drying device in which the vaporizing burner of the present invention can be seen. A vertical down-flow drying chamber 3 is formed at the end of the funnel 2, 2.
Connect the ends of 3.

In the embodiment, the humidity control tank 1 and the down-flow drying chamber 3 are integrated, but they may be separated.

A hot air supply chamber 4 is formed between the pair of left and right downstream drying chambers 3, 3, and hot air scarlet chambers 5, 5 are formed outside each of the downstream drying chambers 3, 3.

Rotary valves 6, 6 are installed at the lower ends of the flow F type drying chambers 3, 3, the do sides of the rotary valves 6, 6 are surrounded by a receiving gutter 7, and the upper part of the center of the receiving gutter 7 is provided. A screw conveyor 8 is installed horizontally at the top, and the grains conveyed by the screw conveyor 8 are lifted by an elevator and returned to the humidity control tank 1 in two piles.

The II-II cross section in FIG. 1 is shown in FIG. 2, and the hot air supply chamber 4
A ventilation tube 9 is provided at the end of the hot air exhaust chamber 5, 5.
An exhaust pipe 10 is installed on the outlet side. The exhaust pipe 10
A suction fan 11 is installed inside, and when the suction fan 11 rotates, hot air is circulated as shown by the arrow in FIG.

The suction fan 11 is very powerful and can send at least 2 m3/sec of air per ton of unhulled rice.

Inside the ventilation tube 9, there is a vaporizing burner l2 as shown in FIG.
is taken and 1 is taken. That is, the center position t in the ventilation tube 9
In this case, a blowing tube l3 having a diameter much smaller than the inner diameter of the ventilation tube 9 is provided inside the ventilation tube 9. A vertical tray A+1 plate l4 is provided inside the blast tube l3, and a motor 15 having a much smaller diameter than the blast tube l3 is fixed to the center of the tray 4=J plate l4.

A plurality of through holes 16 are bored in the receiving plate 14. The rotating shaft l7 of the motor l5 extends horizontally forward and protrudes forward beyond the tip opening l8 of the blower cylinder l3, and a bowl-shaped heating bowl l9 is fixed to the tip thereof. A tipper tube 2o having a small diameter tip is fixed to the front side of the blow tube l3. The heating bowl l9 has a shape facing the rear force, and surrounds the outer periphery of the tipper cylinder 20 with a gap 2l formed therein. The heating bowl l is attached to the tip of the rotating shaft l7.
9 has a large diameter at the bottom, and a conical portion 22 (diffuser) that gradually becomes smaller in diameter as it approaches the blower tube 13 can be seen. 23 is a kerosene supply device, which serves as tipper tube 2 of the blower tube l3.
It extends forward on the inside of 0, and the tip opens on the conical part 22.
There are 1 shi. The base of the tapered cylinder 20 is attached to the vaporizing burner l2, and the base of the outer cylinder 24 is also fixed thereto.

The outer cylinder 24 largely surrounds the outside of the heating bowl l9.

The connection part 25 of the ventilation 'm9 to the main body of the drying apparatus is formed in a double wall structure and forms a heat shielding chamber 26. The entire ventilation tube 9 may have a double wall structure. As shown in FIG. 4, a primary air intake 27 is provided on a part of the outer periphery of the heat shielding chamber 26, and a perforated plate 28 is provided. A blower 29 is attached to the rear of the vaporizing burner l2, and the blower 11
30 is connected to the rear end of the blower tube 13. The blower 29 is a variable motor that rotates at the desired rotation speed. One end of the suction pipe 3l is connected to the heat shielding chamber 26, and the other end of the suction pipe 3l is connected to the blower 29. In the embodiment of FIG. 5, the primary air intake +127b is also formed on the inner wall.

In the embodiment of FIGS. 6 and 7, the primary air intake 27
The on-off valve 32 can be seen.

In addition, 33 is a combustion plate, 34 is a ceramic heater, 35
is a gasification chamber, and 36 is a combustion chamber.

Next, we will discuss the effect.

Although the diagram is omitted, when undried undried rice is supplied to the loading port of the elevator, the undried rice is fried by the unloader E and fed into the humidity control tank L, where it falls under its own weight and falls into the flow-through type. Drying room 3, 3
The inside of the funnel 2, the inside of the 2, and the inside of the humidity control tank 1 are filled.

When the switch is turned on in this state, electricity is applied to the motor that rotates the suction fan 11 installed in the exhaust pipe lO, and the suction fan l1 is rotated at a furious speed, Supply drying air of at least 2m37sec or more per ton. Furthermore, the motor 15 that rotates the heating bowl 19 and the variable motor that rotates the blower 29 are also energized to rotate the heating bowl 19 and the blower 29. Therefore, the kerosene supplied by the kerosene supply device 23 flows at a rate of 2500 per minute.
It is dropped onto the circular complex part 22, which also rotates, and is blown away by centrifugal force, reaches the inner surface of the heating bowl 19, rotates together, and is blown off by centrifugal force. Since the blower 29 blows an amount of air corresponding to the kerosene paste there, the kerosene turns into scum and becomes a completely mixed gas in the gasification chamber 35, and the combustion chamber 36 outside (front) of the combustion plate 33 Inject to. Therefore, if the ceramic heater 34 is energized, it will easily ignite and burn like shell gas. Therefore, the flame causes the outer surface of the heating bowl 19 to become red hot. Then, the kerosene in the gap 2L on the inner surface of the heating bowl 19 actively turns into scum, and finally becomes a blue flame and combusts.

Therefore, the hot air with the blue flame is supplied from the hot air supply chamber 4 to the down-flow drying chambers 3, 3, but unlike the conventional case with the red flame,
Due to blue flame drying, grain quality will not be reduced.

When such a strong blue flame is blown into the main body of the drying device, the connection part 25 of the ventilation tube 9 becomes red hot, making the operator feel uneasy.However, in the case of the present invention, the connection part 25 Since it has a double wall structure, it will not become red hot. Also,
Since the heated air in the heat shield chamber 26 is used as secondary air through the suction pipe 3l, combustion is very good.

The dried grains are dropped little by little onto the receiving trough 7 by the rotation of the rotary pulps 6, 6, collected by the screw conveyor 8, fried by the H-lift machine, and stacked on top in the humidity control tank 1. After repeating this circulation drying process about 5 to 6 times, the unhulled rice will be completely dried. According to the present invention, a vaporizing burner l2 is provided in the ventilation tube 9 so as to form a drying air passage between the inner wall of the ventilation tube 9 and the outer periphery of the vaporization burner 12, and the ventilation tube 9 is provided with a drying air passage. Evaporative burner with a partially double-walled structure,
and a vaporizing burner provided with a primary air intake port 27 in the double wall structure, and an on-off valve 32 provided in the double wall structure and with the primary air intake port 27 in the handle 1-127. (1) Misfires can be prevented.

(2) Since the connecting portion 25 has a double wall structure, even the burning of a powerful blue flame does not cause workers to feel uneasy.

This effect can be expected.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of the whole, Fig. 2 is a cross-sectional plan view of the same II-11, Fig. 3 is a sectional view of the inside of the ventilation tube of the known example, Fig. 4 is a sectional view of the vaporizing burner of the first embodiment, Fig. 5 is a sectional view of the vaporizing burner of the second embodiment, Fig. 6 is a sectional view of the vaporizing burner of the third embodiment, Fig. 7 is a perspective view of the vaporizing burner of the third embodiment, and Fig. 8 is a cross-sectional view of the vaporizing burner of the third embodiment. Cross-sectional view. Humidity control tank 1, funnel 2, down-flow drying room 3, hot air supply room 4
, hot air exhaust chamber 5, rotary valve 6, receiving gutter 7, screw conveyor 8, ventilation tube 9, exhaust tube lO, suction fan l1, vaporization burner l2, blower tube l3, receiving plate l4, motor l
5, through hole l6, rotation axis l7, tip opening 18, heating bowl 1
9, taper cylinder 20, gap 2l, conical part 22, oil supply device Ft: 23. Outer cylinder 24, connection part 25, heat shield chamber 26,
-・Next air intake 1j27, 27b, perforated plate 28, blower 29, blower L+30, suction pipe 31, opening/closing valve 32
, combustion plate 33, ceramic heater 34, gasification chamber 3°5, combustion chamber 36. -42 -43

Claims (3)

[Claims] (1) A vaporizing burner is provided in a ventilation tube so as to form a dry return passage between an inner wall of the ventilation tube and an outer periphery of the vaporization burner, and the ventilation tube is entirely or at least partially double-layered. A vaporizing burner painted on the wall. (2) A vaporizing burner is provided in the ventilation tube so as to form a dry blast passage between the inner wall of the ventilation tube and the outer periphery of the vaporization burner, and the ventilation tube is entirely or at least partly double-walled. In the vaporizing burner having a structure, the double wall structure includes a primary. A vaporizing burner with an air intake. (3) A vaporizing burner is provided in the ventilation tube so as to form a drying air passage between the inner wall of the ventilation tube and the outer periphery of the vaporization burner, and the ventilation tube is entirely or at least partly double-layered. In a vaporizing burner having a wall structure, the double wall structure portion is provided with a primary air intake ``■'', and the intake [.1 is provided with an opening/closing valve.