JP2010124750A - Ventilation device in cereal grain storage bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation device capable of burying-in a pipe in the vertical direction at the central part of a cereal grain storage bag surely by a simple operation. <P>SOLUTION: This ventilation device is provided by adopting a means of installing with penetrating many small holes having a size that the cereal grains can not pass through over a prescribed length at the surrounding wall of a pipe having a fixed length and opening at its top end, also forming a tapered part closed as tapered off at the lower end of the pipe, installing a helical screw blades beginning from the side slope surface of the tapered part over to the middle of the surrounding wall surface as continued, and enabling to bury the pipe deeply in the vertical direction while the upper end opening part of the pipe projects in upper direction. A means of mounting 4 pieces of handles projecting radially by 90 degrees with each other as freely attachable and detachable in the vicinity of the upper end part of the pipe, and a means that the length of the handle is from 2 to 3 folds of the diameter of the pipe are adopted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ventilator that prevents stuffiness caused by internal temperature rise of cereals when directly storing grains such as ginger harvested by a combine in a large sized grain storage bag.

  In recent years, when harvesting ginger and the like by a combine, instead of a conventional cereal storage bag with a storage capacity of 30 to 40 kg, 700 to 1,000 kg of ginger stored in a tank built in the combine is used. Improvement of harvesting efficiency is performed by using a large grain storage bag that can be transferred at once.

  And as this cereal storage bag, a bag having a diameter of about 1.2 m and a height of about 1.3 m is widely used. In addition, the storage bag filled with the harvested ginger is directly taken into a drier or a local rice center, and then stored and dried.

  In general, the moisture content of the harvested ginger is as high as about 28%, and the storage bag containing the ginger containing such a large amount of moisture hardly obtains internal ventilation. In some cases, it may be forced to wait for several hours to dry while being stored in the storage bag. During this time, the ginger at the center of the storage bag will be melted due to internal temperature rise and discolored when it is polished. In other words, it causes germination and sometimes germinates, resulting in a significant reduction in product value.

  Therefore, for the purpose of solving this problem, the present inventor has proposed a ventilator made of a perforated pipe as disclosed in Patent Document 1. That is, a large number of pores of a size that a ginger cannot pass through are penetrated through a peripheral wall of a pipe having a predetermined length with an upper end opened and a tapered end at a lower end. The ventilator was constructed so as to be deeply embedded in a state of protruding upward from the bottom of the central part of the bag, promoting ventilation inside the storage bag where stuffiness is likely to occur, and suppressing temperature rise It is.

  The ventilator with the above structure is a state where the upper end opening is exposed and is deeply embedded in the central portion of the storage bag filled with ginger, so that the air in the portion where the temperature rise is high and moisture transpiration is active is piped. It can be introduced from the pores of the peripheral wall and discharged to the outside by natural convection or via a fan, and the sagging of this part can be reliably suppressed.

Japanese Utility Model Publication No. 7-12885

  However, the ventilator described in Patent Document 1 has a tapered tapered surface at the lower end, or a small screw blade attached to only the tapered surface, so that it accommodates a large amount of ginger. When trying to insert the tip from the opening surface of the bag, the tip is embedded relatively easily, but as it advances while rotating, the progress of the pipe is hindered by the resistance of the pipe peripheral wall. It took a lot of effort to completely embed the bottom.

  In this case, it is preferable that the ventilator is embedded in a direction that is nearly vertical, but in the conventional one, the rotary handle has a pair of horizontal handles in the horizontal direction, that is, two in the direction of 180 degrees relative to each other. Since the handle bar only protrudes, it must be rotated 180 degrees at a time, and the rotation operation is troublesome and requires skill to maintain the vertical direction at the same time. there were.

  For this reason, as shown in FIG. 3, as a means of assisting the progress, a screw blade is provided only on the peripheral wall of the pipe, but in this case, since there is no blade on the tapered surface of the tip, Blur is likely to occur in the traveling direction, and it is difficult to embed while maintaining the vertical direction.

  The present invention has been invented in view of the above-mentioned problems, and is a grain storage that allows a pipe to be embedded vertically in a central portion of a storage bag with a simple operation. A ventilator in the bag is proposed.

  In order to solve the above-described problems, the present invention provides a large number of pores having a size such that cereals cannot pass over a predetermined length on a peripheral wall of a fixed-length pipe whose upper end is opened as a ventilation device in a cereal storage bag. And the lower end of the pipe forms a tapered portion closed in a tapered shape, and a helical screw blade is continuously provided in the middle of the peripheral wall surface of the pipe starting from the side slope of the tapered portion. In the central part of the cereal storage bag containing the pipe, a means is adopted that allows the pipe to be buried deeply in a substantially vertical direction with the upper end opening of the pipe protruding upward.

  Further, a means of detachably attaching four handles protruding radially at an angle of 90 degrees to each other in the vicinity of the upper end portion of the pipe was adopted.

  At this time, a means was adopted in which the length of the handle was 2 to 3 times the diameter of the pipe.

  Furthermore, the means that the tip angle of the tapered tapered portion is an acute angle was adopted.

  In addition, a means is adopted in which a suction fan can be attached to the upper end opening of the pipe.

  The ventilator in the cereal storage bag of the present invention according to the above configuration has the effect that the humid air at the center of the storage bag is introduced into the pipe through a large number of pores provided in the peripheral wall and released to the outside by natural convection. This is the same as this type of device, but it forms a tapered part with the lower end of the pipe taperingly closed, and starts from the side slope of this tapered part and continues with a helical screw blade over the peripheral wall of the pipe. When installing the tape blade, the screw blades in the taper section act synergistically with the acute angle portion to advance the pipe straight, and the screw blades on the body surface are rotated by the pipe. It has an effect of reliably moving forward.

  Therefore, it is possible to reliably embed the pipe in the vertical direction in the center portion, and the ventilation action acts evenly on the entire storage bag to prevent the stored cereal from becoming stuffy and to prevent discoloration and cracking. In this way, a special effect of maintaining the product value can be expected.

  In addition, since the four handles are provided so as to project radially, the pipe can be reliably rotated by 90 degrees, and the pipe can be accurately embedded.

  At this time, since the length of the handle is made larger than the pipe diameter, a large rotational torque can be obtained, and the rotational operation can be performed easily.

  In addition, by making the tip angle of the taper portion an acute angle, it can be easily performed when embedding in the center of the upper surface of the cereal, and the occurrence of blurring during the progress is suppressed, and the embedding is ensured in the vertical direction. become able to.

  In addition, when a suction fan is provided at the upper end opening of the pipe, ventilation is forcibly performed, so the ventilation capacity is significantly improved compared to that due to natural convection, and the occurrence of stuffiness can be prevented efficiently. Product value is not impaired.

  Hereinafter, one preferred embodiment of a ventilation device in a grain storage bag according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall perspective view of the device of the present invention. Moreover, FIG. 2 is explanatory drawing which shows the usage condition of this invention apparatus, and is inserted deeply in the upper surface center part of the grain storage bag which accommodated the ginger as an example of grains.

  1 and 2, 1 is a pipe made of metal or hard synthetic resin, and an outward flange 3 is provided at the upper end opening 2 as necessary. Further, a large number of pores 4, 4... Are provided in the peripheral wall of the pipe 1 over a predetermined length. The pore diameter of the pores 4 is set to such a size that, for example, ginger cannot pass through. In addition, the area | region of the pore 4 provided in the surrounding wall of the pipe 1 shall be provided over the length more than the insertion depth with respect to the ginger (R) accommodated in the storage bag (B).

  Reference numeral 5 denotes a tapered portion formed at the lower end of the pipe 1 which is closed in a tapered shape, and the tip end angle thereof is an acute angle considerably smaller than 90 degrees. Reference numeral 6 denotes a helical screw blade, which is continuously provided from the side inclined surface of the tapered portion 5 to the middle of the peripheral wall surface of the body portion of the pipe 1. The sharp tapered portion 5 is formed at the lower end of the pipe 1 in this way in order to facilitate insertion when inserted into the center portion of the upper surface of the ginger (R) accommodated in the storage bag (B). Further, the reason why the screw blades 6 are provided in a wide range is that the tip is not moved, but is advanced deeply while rotating in the vertical direction. That is, the screw blades 6 of the taper portion 5 act synergistically with the acute angle portion to cause the pipe 1 to advance straight, and the screw blades 6 on the body surface reliably advance the pipe 1 by rotation. It has an effect.

  Reference numerals 7, 7,... Are pipe rotation handles that are detachably attached in the vicinity of the upper end of the pipe, and are provided with four protrusions projecting radially at an angle of 90 degrees relative to each other. The length of each handle is preferably at least 2 to 3 times the length of the pipe 1 in consideration of operability. This makes it possible to obtain a large rotational torque during operation and to rotate it 90 degrees at a time, so that the pipe can be inserted accurately and easily with a small force.

  In FIG. 2, reference numeral 8 denotes a suction fan, which is attached as necessary using an outward flange 3 provided at the upper end of the pipe 1 so as to be sealed. The suction fan 8 forcibly exhausts the air in the pipe 1 to improve the ventilation function.

  In addition, if the diameter of the said pipe 1 is a comparatively thin thing of about 5-10 cm, for example, there exists an advantage that it is easy to insert, but if the ventilation capacity mentioned later falls, the diameter beyond it will be larger And is not particularly limited. Further, if necessary, a plurality of thin items may be used simultaneously.

  As shown in FIG. 2, the ventilator according to the present invention having the above-described configuration is inserted and embedded in the vertical direction by rotating the handle 7 in the center portion of the upper surface of the storage bag. As a result, the humid air in the central portion is introduced into the pipe 1 from the pores 4 on the peripheral wall of the pipe 1 and is discharged to the outside from the upper end opening 2 by natural convection. Further, when the suction fan 8 is mounted via the flange 3, the inside humid air is forcibly sucked and discharged. For this reason, it is possible to reliably prevent the internal stuffiness caused by the temperature rise of the ginger and to obtain a special effect that the commercial value is not impaired.

It is a perspective view which shows an example of the ventilation apparatus in the grain storage bag which concerns on this invention. It is explanatory drawing which shows the usage condition of this invention apparatus. It is the elements on larger scale of the lower end part of the conventional ventilator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe 2 Upper end opening part 3 Flange 4 Pore 5 Taper part 6 Screw blade 7 Handle 8 Suction fan

Claims (5)

  A large number of pores with a size that prevents the passage of cereals over a predetermined length are provided in the peripheral wall of a fixed-length pipe whose upper end is open, and the lower end of the pipe forms a tapered portion that is tapered. Then, starting from the side slope of this taper portion, spiral screw blades are continuously provided in the middle of the peripheral wall surface of the pipe, and the upper end opening of the pipe is directed upward in the central portion of the cereal storage bag containing cereals. A ventilator for a grain storage bag, characterized in that it can be embedded deeply in a substantially vertical direction in a protruding state.   The ventilation device for a cereal storage bag according to claim 1, wherein four handles protruding radially from each other at an angle of 90 degrees are detachably attached in the vicinity of the upper end of the pipe.   The ventilation device for a cereal storage bag according to claim 2, wherein the length of the handle is two to three times the diameter of the pipe.   The ventilation device for a cereal storage bag according to any one of claims 1 to 3, wherein a tip end angle of the tapered portion is an acute angle.   The ventilation device for a grain storage bag according to any one of claims 1 to 4, wherein a suction fan can be attached to the upper end opening of the pipe.

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