JPS585909Y2 - Momitsunetsupufunsouchi - Google Patents

Description

[Detailed description of the invention] This invention allows even if the blower tube is significantly shorter than the depth of the blower chamber, evenly distributed super-acidized dry hot air from both sides of the blower tube will be filled. The present invention relates to a homogeneous hot air blowing device in a rice dryer for the purpose of drying rice grains to a uniform moisture content state by blowing the hot air onto the raw rice grains.

A horizontally long ventilation chamber with ventilation surfaces on both sides is installed vertically in the ventilation drying tank, and this is a ventilation chamber with ventilation surfaces on the sides facing the ventilation surface of the ventilation chamber via the paddy flow path on both sides of the ventilation chamber. In the case of a paddy dryer in which the paddy is vertically installed, and the paddy is dried by dry hot air that exits from the ventilation chamber and enters the ventilation chamber in the process of vertically flowing down the paddy along the paddy flow path, it is usually -124
As shown in Publication No. 64, the dry hot air blown into the above-mentioned blowing chamber is provided with blowing ports that are inserted through the entire length of the blowing chamber and whose upper surface on the discharge side is entirely open. The air was generated by a blower tube containing a burner and an axial blower.

Therefore, when super-acidified dry hot air is introduced into the air blowing chamber by the suction action of the suction blower or the pressure action of the axial blower, the dry hot air flows from the air blowing chamber at a position far from the blower tube. As a result, a large amount of dry hot air is ejected, and as a result of the fact that the dry hot air is not ejected from the blower chamber on the side closer to the blower tube, it is not possible to expect uniform dry hot air to be ejected from both the left and right sides of the blower chamber, which makes it difficult to uniformly dry the paddy. cannot be carried out.

To solve this problem, the applicant installed hot air diffusion devices with various configurations in the ventilation chamber, but although the above-mentioned diffusion devices can be expected to be effective, they have complicated configurations. This results in the disadvantage that the manufacturing process is time-consuming and the dryer is unacceptably expensive.

In view of the above, the present invention has been developed by changing the configuration and installation position of the blower tube that houses the burner, so that the dry hot air that has been super acidified by the blower tube is uniformly distributed vertically to the paddy from both left and right sides of the horizontally elongated blower chamber. The purpose of the present invention is to provide a homogeneous hot air blowing device for a paddy dryer that can rapidly obtain uniformly dried paddy by blowing out the air in a spraying manner. An example in which the device is installed in a paddy dryer will be described.

In the drawing, 1 is a rectangular cylindrical dryer body formed by three-dimensionally stacking a tempering tank 2 in the upper stage, a ventilation drying tank 13 in the middle stage, and a take-out tank 6 in the lower stage so that the insides communicate with each other. The tempering tank 2 is formed into a hollow shape filled with paddy, and inside the ventilation drying tank 3, horizontally elongated ventilation chambers 4 are arranged vertically across the entire length of the ventilation chamber 3. Both side surfaces are formed into ventilation surfaces 4a, 4a through which dry hot air can be easily blown out.

A ventilation chamber with a ventilation surface 8a on the side facing the ventilation surface 4a of the ventilation chamber 4 is provided between both sides of the ventilation chamber 4 and the wall plate 7 of the dryer main body 1 via paddy channels 5, 5. 8 is installed vertically.

The extraction tank 4 disposed at the lower stage of the ventilation drying tank 3 is also surrounded by a ventilation chamber 8 formed by a wall plate 7.

A large number of ventilation holes 10 are bored in the inclined wall plate 9 forming the take-out tank 6 to make the ventilation chamber 8 and the take-out tank 6 communicate with each other. A recessed suction and exhaust passage 12 is formed by partitioning the bottom side of the ventilation chamber 4 with a wall plate 11, and this allows the suction side of the suction and exhaust passage 12 to communicate with the extraction tank 6.

A suction exhaust machine 14 is provided at the exhaust side end of the suction exhaust passage 12.
A dust exhaust pipe 13 is connected thereto.

Reference numeral 15 denotes a blower tube for generating dry hot air. let me,
In addition, the negative intake side a is in communication with the outside, and the other discharge side is closed off by a closing wall 16.

A burner 17 is installed inside the intake side a of the blower tube 15, and blowholes 18 and 19 are spaced apart on the upper surface near the discharge side of the blower tube 15 and on the upper surface near the insertion into the blower chamber 4, respectively. At the same time, the opening area of the blower port 18 opened at a position near the discharge side is made larger than the opening area of the blower port 19 opened at a position near the insertion into the blower chamber 4, so that the entire length of the blower tube 15 is To uniformly blow out dry hot air from both left and right sides of a blowing chamber 4 toward a paddy flow path 5.5 even if the length is significantly shorter than the depth of the blowing chamber 4.

The opening degree of the above-mentioned jet ports 18 and 19 is such that, when the ventilation cross-sectional area of the blower tube 15 is 6, one jet port 18 is opened at a ratio of 5, and the other jet port 19 is opened at a ratio of 1. Alternatively, the above-mentioned ratio may be set to 1.5:5° to provide enough margin for the ejection opening area of the ejection ports 18 and 19.

Reference numeral 20 denotes a carry-out gutter disposed at the lowest position of the take-out tank 6, and the carry-out side end of the carry-out gutter 20 is connected to an elevator 21 that performs tensioning and circulation operations.

22 is a carry-out screw horizontally suspended in the carry-out gutter 20;
23 is a carry-in device disposed on the top of the dryer main body 1, and 24 is a delivery roll.

Next, its effect will be explained.

Now, paddy is filled into the dryer main body 1 via the elevator 21 and the carrying device 23, and when a predetermined amount of paddy is stored in the paddy channels 5, 5 and the tempering tank 2, the supply is stopped and the burner 17
and the suction/exhaust fan 14 are started together.

Then, the combustion gas generated in the blower tube 15 and the outside air drawn into the blower tube 15 by the suction action are separated by the closing wall 16.
It collides with the air, stirs and mixes, and becomes good dry hot air, which blows into the blower tube 1.
A jet outlet 18 opened at an upper surface position near the discharge side of the air blower chamber 5 and a jet nozzle 19 opened at an upper surface position near the insertion into the air blowing chamber 4 eject air in different amounts from each other.
be introduced within.

Therefore, even if a blower tube 15 having a length shorter than the depth of the blower chamber 4 is inserted into the front side of the horizontally elongated blower chamber 4, the blower tube 15 is inserted into the front side of the horizontally long blower chamber 4. A small amount of dry hot air is supplied to the front side of the blower tube 15, and a large amount of dry hot air is supplied to the blower chamber 4 on the rear side from the discharge side of the blower tube 15.
The dry hot air can be introduced from two blow-off ports 18 and 19 provided in the air blowing chamber 4, respectively, to fill the entire blowing chamber 4 with an equal amount of dry hot air.

As a result, the filled dry hot air comes out from the ventilation surfaces 4a, 4a on both sides of the ventilation chamber 4 due to the above-mentioned suction action, and is discharged to the ventilation chamber 8 by crossing the paddy channel 5 at an even flow rate. It acts as a ventilation dryer and uniformly dries the paddy flowing vertically by the feed rolls 24.

The dust exhaust air sucked and discharged into the exhaust chamber 8 then enters the take-out tank 6 through the ventilation hole 10 at the lowest position, and finally is concentratedly removed outside by the suction exhaust fan 14 through the suction exhaust passage 12. At the same time, the hot paddy is returned to the tempering tank 2 via the unloading screw 22, the elevator 21, and the loading device 23, and is exposed to drying hot air as it flows vertically again, and is uniformly dried through several circulations. It is what it is.

In short, the present invention has ventilation surfaces 4 on both sides in the ventilation drying tank 3.
A horizontally long ventilation chamber 4 designated as a and 4a is installed vertically, and on both sides of the ventilation chamber 4, a ventilation surface 8a is provided on the side facing the ventilation surface 4a of the ventilation chamber 4 via paddy channels 5, 5. A wind chamber 8 is installed vertically, and the intake side a is opened to the outside on the front side of the ventilation chamber 4.
The discharge side is closed by a closing plate 16, and a burner 1 is installed inside.
7 is installed and a blower tube 15 shorter than the depth of the blower chamber 4 is inserted through the blower tube 15, and the inserted blower tube 15 is placed on the upper surface near the discharge side and the upper surface near the insertion into the blower chamber 4. The opening area of the air outlet 18 opened at the upper surface near the discharge side is the same as the opening area of the air outlet 19 opened at the upper surface near the insertion of the ventilation chamber 4. Because it is made larger, even when the blower tube 15, which is shorter than the depth of the horizontally long blower chamber 4, is inserted and installed inside the front side of the blower chamber 4, the super-acidized combustion gas and the blasted air can be exchanged in the blower tube 15. The outside air sucked into the cylinder 15 is stirred and mixed with the outside air as it circulates while being bent to form a good dry hot air. A large amount of G dry hot air can be introduced into the blowing chamber 4 on the rear side of the discharge side of the blowing tube 15 according to the ejection area, and as a result, the entire inside of the blowing chamber 4 is mutually dry. The hot air is evenly filled and flows from both sides of the ventilation chamber 4 to the exhaust chamber 8 through the paddy flow path 5. The amount of dry hot air is made uniform everywhere and flows vertically down along the paddy flow path 5.5. It can be applied to paddy to dry it.

Therefore, the outer wind tube 1 can prevent the occurrence of uneven drying caused by uneven drying hot air volume as seen in conventional drying equipment, and can always obtain dried paddy in a uniformly dry state.
5 can be provided easily and inexpensively.

It goes without saying that the suction dryer equipped with the device of the present invention is not limited to the one of the above-mentioned embodiments, but can also be applied to dryers having other configurations to achieve the above-mentioned effects.

[Brief explanation of drawings]

The drawings show an embodiment of a paddy dryer equipped with the device of the present invention, in which Fig. 1 is a vertical front view, Fig. 2 is a side view with main parts cut away, and Fig. 3 is a perspective view of the blast tube. It is a diagram. 1... Dryer body, 3... Ventilation drying tank, 4... Ventilation chamber, 4 a, 4 a...
・Ventilation surface of ventilation room, 5, 5...Paddy flow path, 8...
... Ventilation chamber, 8a... Ventilation surface of the ventilation chamber, 1
5...Blow tube, 16...Closing wall, 18
．． 19... Large and small jet ports, a... Intake side of the blower tube, b... Discharge side of the blower tube.

Claims (1)

[Scope of utility model registration request] A horizontally long ventilation chamber with ventilation surfaces on both sides is installed vertically in the ventilation drying tank, and on both sides of the ventilation chamber, ventilation is discharged through the paddy flow path on the side facing the ventilation surface of the ventilation chamber. The chamber is installed vertically, and the intake side is opened to the outside on the front side of the ventilation chamber, the discharge side is closed by a closing wall, and a burner is installed inside, and the depth is shorter than the depth of the ventilation chamber. In the case where the blower tube is inserted through the blower tube, the blower openings are opened at intervals on the top surface near the discharge side of the blower tube inserted into the blower chamber and the top surface near the insertion into the blower chamber, and the blower openings are opened at intervals on the top surface near the discharge side of the blower tube inserted into the blower chamber. 1. A homogenized hot air blowing device for a rice grain dryer, characterized in that the opening area of the blowing hole opened at the position is larger than the opening area of the blowing hole opened at the upper surface position near insertion into the blowing chamber.