JP7272010B2 - Grain dryer side cover - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grain dryer that dries grains such as rice and wheat with hot air while circulating them, and more particularly to side covers on both sides of the main body of the grain dryer.

Conventionally, a grain dryer that dries grain with hot air is well known (see Patent Document 1, for example).

The grain dryer described in Patent Document 1 is provided with a dryer main body consisting of a ventilation drying section below a grain storage tank section. The grain drying section includes a grain drying chamber, a hot air chamber sandwiched between the grain drying chambers, and an exhaust chamber positioned outside the grain drying chamber, etc., and is solid and airtight for mounting the grain storage tank portion. structure.

By the way, the grain drying chamber is formed of perforated steel plates with air permeability, and the grains flowing down in the grain drying chamber are blown by hot air from the hot air chamber to dry the grains. After the grains flow down the grain drying chamber and are subjected to the drying action by hot air, after being circulated to the grain storage tank section, the grains flow down the grain drying chamber again and are repeatedly subjected to the drying action. Straw shavings and the like adhere to or stick to the perforated wall steel plate forming the grain drying chamber, thereby obstructing the flow of grain and the ventilation of hot air.

Therefore, it is necessary to open the side covers on both sides of the grain drying section (dryer main body) and clean the surface of the porous wall steel plate. Since it has an airtight structure and the side cover is firmly attached with bolts or the like, it is not easy to open and close, and cleaning the steel plate surface of the porous wall is a time-consuming and troublesome task.

In some cases, an inspection cover that can be easily opened and closed is provided for inspecting the inside of the grain drying section. It is difficult to remove the inspection cover and clean the entire surface of the perforated steel plate because it is formed relatively small so as not to impair the strength of the part.

Japanese Unexamined Patent Application Publication No. 2017-20691

Accordingly, the present invention provides a grain dryer capable of maintaining the robustness of the grain drying section (dryer main body) while easily exposing a large opening on the side of the drying section for cleaning the inside of the grain drying section. The purpose is to provide a side cover for

In order to achieve the above object, the present invention provides a pair of grain drying chambers made of perforated steel plates for flowing down the grain in the grain storage tank, and a hot air chamber formed inside the pair of grain drying chambers. and an exhaust chamber formed outside each of the pair of grain drying chambers. wherein a hot air generator for blowing hot air to the hot air chamber is provided on the front surface of the grain drying unit, and the back surface of the grain drying unit communicates with the exhaust chamber. In a grain dryer provided with a suction fan for
Cleaning openings are provided on both sides of the grain drying section by opening one outer side of each of the exhaust chambers. Supports are detachably erected, and a side cover having fitting ridges formed on the periphery is interposed between the pillars, and the fitting ridges on the side edges of the side cover are aligned with the pillars adjacent to the side cover. It is characterized by providing an engaging means for detachably engaging the fitting part while superimposing and fitting the fitting projection.

In the present invention, it is preferable that the engaging means comprises an engaging pin that laterally penetrates a fitting portion formed by superimposing the fitting ridges of the strut and the fitting ridges of the side cover adjacent to each other. .

In the present invention, the fitting ridges on both side edges of the support may be formed by bending both ends of a steel plate forming the support.

In the present invention, the perforated wall steel plate forming the grain drying chamber is provided with an internal cleaning opening on the surface facing the cleaning opening, and the internal cleaning opening is provided with an internal cleaning cover made of a breathable member. should be provided.

In the present invention, it is preferable that the side cover and the inner cleaning lid are provided with handles.

According to the present invention, after releasing the engaging state of the engaging means and removing the side cover from the pillar, the pillars are removed from the cleaning opening, thereby facilitating the cleaning opening. It is possible to expose. Moreover, since the cleaning opening is always reinforced by the plurality of pillars except when cleaning is performed, the grain drying section can maintain its robustness even if a large cleaning opening is provided, and , airtightness can be maintained.

The present invention can be achieved without complicating the engaging means by using an engaging pin that penetrates the fitting ridge of the strut and the fitting ridge of the side cover that are adjacent to each other. and can be robust.

According to the present invention, if the fitting ridges on both side edges of the support are formed by bending both ends of the steel plate that constitutes the support, a light and strong support can be formed with a relatively thin steel plate. Moreover, it is easy and strong to mesh with the fitting ridges formed on the side covers, and the airtightness is good.

In the present invention, if the grain drying chamber is provided with an internal cleaning opening on a surface facing the cleaning opening, and an internal cleaning lid made of a breathable member is provided in the internal cleaning opening, Not only the exterior surface of the grain drying chamber, but also the interior thereof can be easily cleaned.

According to the present invention, if the side cover and the inner cleaning lid are provided with handles, workability is further improved.

BRIEF DESCRIPTION OF THE DRAWINGS Front sectional drawing of the grain dryer of this invention. FIG. 2 is a side cross-sectional view of the ventilation drying section of the grain dryer of the present invention; The perspective view of the ventilation drying part of the grain dryer of this invention. (a), (b), and (c) are explanatory diagrams of the operation of the engaging means of the present invention. Fig. 3 is a perspective view of the engaging means of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
A grain dryer according to an embodiment of the present invention comprises an upper body having a grain storage tank for storing grain, and a lower body having a ventilation drying section for blowing hot air to dry the grain flowing down from the grain storage tank, It is a well-known one provided with a grain hoist for returning the grain that has undergone drying action in the ventilation drying section to the grain tank.

1 and 2, the overall structure of grain dryer 1 according to the embodiment of the present invention will be described. The lower portion is formed as a grain drying section 3, and the grain drying section 3 is provided with a pair of grain drying chambers having a substantially V-shaped longitudinal section for air drying the grain flowing down from the grain storage tank 2. 6 are provided over the machine body longitudinal direction (front-rear direction) of the grain drying section 3 . The pair of grain drying chambers 6 are formed of perforated wall steel plates 6a having a large number of slits and are capable of ventilation. Each space outside the grain drying chamber 6 is formed as an exhaust chamber 5, and an exhaust port 7 is opened at one longitudinal end side (back side) of each exhaust chamber 5, and these exhaust ports 7 are covered. A fan box 8 is provided, and the fan box 8 is equipped with a suction fan 9 and a fan motor 18 .

A burner 10 for generating hot air is placed at one end (front side) of the hot air chamber 4 formed along the longitudinal direction of the machine body of the grain drying section 3, facing the suction fan 9, and the burner 10 is housed. A burner box 11 is provided, and the burner box 11 is provided with an opening 12 for introducing outside air.

Further, at the confluence portion of the lower end of the grain drying chamber 6 having a V-shaped cross section, a long cylindrical rotary valve 14 for intermittently causing the grains in the grain drying chamber 6 to flow down is connected to the pair of grains. It is installed across the entire length of the lower end of the drying chamber 6 . The rotary valve 14 is provided with a pair of notches for receiving grain in the front half and the rear half symmetrically with a shift of 180 degrees, and is configured to intermittently or continuously rotate forward and backward by a rotary valve motor 15. be.

A hopper-shaped grain collecting plate 19 forming the bottom of the exhaust chamber 5 is provided below the rotary valve 14, and the grain discharged from the rotary valve 14 is conveyed to the hopper bottom of the grain collecting plate 19. A conveying end of the lower screw conveyor 20 is connected to a bucket-type grain hoisting machine 21, and an upper discharge part of the grain hoisting machine 21 is the top plate of the grain storage tank 2. A dispersing disc 13 is vertically installed at the end of the upper screw conveyor 22 for feeding the conveyed grain into the grain storage tank 2 . The grain lifting machine 21 is provided with a grain lifting machine motor 17 for driving the upper screw conveyor 22 and the dispersion plate 13, while the lower screw conveyor 20 is attached to the bottom of the grain drying section 3. The main machine motor 16 is arranged.

Next, the grain drying section 3 will be described in detail with reference to FIG.
The grain drying section 3 has a burner box 11, a grain lifting machine 21, etc. on the front, and a fan box 8 and a suction fan 9 on the back. A chamber 6 is provided. Openings on both sides of the grain drying section 3 are used as cleaning openings 23 . That is, a cleaning opening 23 is formed from the upper edge of the pair of grain collecting plates 19 to the vicinity of the upper edge of the grain drying section 3, and pillars 24 are erected at both side ends and the central portion thereof. The strut 24 is formed by bending the side edge of a single steel plate into a prismatic or cylindrical shape to form a fitting projection, that is, a flange 25 for strength. The flanges 25 are formed on both side edges of the support 24, but the support 24b on both sides other than the center support 24a may be formed with the flanges 25 only on the cleaning opening 23 side.

The upper ends of the pillars 24a and 24b are fitted from below into the flanges 3a formed by folding the upper edge of the grain drying section 3 outward in a U-shape, and the lower ends thereof are inserted into the cleaning opening 23. The bottom edge of the grain collecting plate 19, that is, the upper edge of the grain collecting plate 19 is bent outward to contact the flange 19a and screw it with a bolt to detachably stand in the cleaning opening 23. .
In the present embodiment, three pillars 24 are provided, but depending on the type of grain dryer, a plurality of pillars 24a may be provided in the intermediate portion.

A side cover 26 is detachably interposed between the plurality of struts 24 . That is, the side cover 26, which has a width equal to the space between the support columns 24a and 24b and a size equal to the height dimension of the cleaning opening 23, is bent at its peripheral edge to have a U-shaped cross section. A fitting protrusion, that is, a flange 27 is formed, and a handle 28 is provided near the front upper portion.
The side cover 26 is engaged with the support 24 by means of an engaging means, with the flange 27 of the peripheral portion thereof superimposed on the flange 25 of the support 24 .
In the present embodiment, the fitting ridge is formed into a flange having a U-shaped, angular or circular cross-section by bending the end of a single steel plate multiple times. It is not limited, and any material may be used as long as it can be fitted to each other to further improve the strength, and can be closely adhered to maintain airtightness.

The engaging means will be described in detail with reference to FIGS. 4 and 5. FIG.
Crank-shaped engagement pins 30a are attached to two upper and lower positions of the intermediate post 24a so as to be slidable in the left-right direction by means of a pair of C-shaped brackets 31. As shown in FIG. The pair of brackets 31 are provided between flanges 27 formed on both side edges of the support column 24a. Mounting frames 31a on the outer sides of the pair of brackets 31 are provided with through holes 31c through which the crank-type engagement pins 30a are inserted. In addition, a notch 31d is formed in each inner mounting frame 31b so as not to hinder the sliding of the crank portion c of the crank-type engaging pin 30a. As a result, the crank-type engaging pin 30a is inserted into the through holes 31c of the pair of brackets 31 and lifts the crank portion c positioned between the inner mounting frames 31b of the brackets 31 to rotate. After the movement, the crank c can be held and the crank type engagement pin 30a can be slid left and right.

On the other hand, each flange 25 of the support 24a is provided with an engagement hole 32 at a position corresponding to the bracket 31, and the flange 27 of the side cover 26 overlapping the flange 25 of the support 24a is also provided with the engagement hole. 32 are provided with engagement holes 29 respectively. As a result, the crank-type engagement pin 30a is rotated 90 degrees around its axis and slid in either the left or right direction (see circled numerals 1 and 2 in FIGS. 4 and 5), so that the crank portion c abuts on the mounting frame 31c on the outside of the bracket 31, the tip of the crank-type engaging pin 30a is disengaged from the engaging holes 29, 32 (see b, c in FIG. 4). reference).

Further, through holes 32 and brackets 31 are provided at upper and lower positions on the inner flanges 25 of the support columns 24b on both sides. An L-shaped engagement pin 30b is supported by one bracket 31 on the post 24b. A pair of mounting frames of the bracket 31 are provided with engagement holes, respectively, so that the L-shaped engagement pin 30b can be rotated and slid in the lateral direction. The tip of the L-shaped engagement pin 30b is inserted through the engagement hole 29 of the flange 25 of the support 24b and the flange 27 of the side cover 26 overlapping the flange 24b to hold one side of the side cover 26 airtight. do. When the side cover 26 is attached or detached, the L-shaped engaging pin 30b is turned about 90 degrees and slid outward (a direction away from the cleaning opening 23).

As described above, by manually rotating and sliding the engagement pins 30 provided on the respective struts 24 without using any tools, the side covers 26 can be easily attached to and detached from the struts 24, and the struts can be easily attached and detached. 24 has its upper end fitted into the upper edge flange 3a of the grain drying section 3, while its lower end is bolted. , the cleaning opening 23 on one side of the exhaust chamber 5 can be opened wide, and the perforated wall steel plate 6a forming the grain drying chamber 6 can be cleaned over a wide area.

A plurality of internal cleaning openings (not shown) are provided on the surface of the porous wall steel plate 6a forming the grain drying chamber 6 and on the side facing the cleaning opening 23. , an internal cleaning lid 33 is attached so as to be openable and closable by a locking means (not shown) such as a hook. The internal cleaning lid 33 is provided with a handle 33a. As a result, when the cleaning opening 23 is opened, it is possible to easily clean the inside of the grain drying chamber 6 by releasing the locking means, holding the handle 33a and opening the inner cleaning opening. .

INDUSTRIAL APPLICABILITY The grain dryer of the present invention can easily clean the inside of the grain drying section, and can perform the grain drying work safely while maintaining the drying efficiency.

1 grain dryer 2 grain storage tank 3 grain drying unit 4 hot air chamber 5 exhaust chamber 6 grain drying chamber 7 exhaust port 8 fan box 9 suction fan 10 burner 11 burner box 12 opening 13 diffusion plate 14 rotary valve 15 motor for rotary valve 16 Main machine motor 17 Grain hoisting machine motor 18 Fan motor 19 Grain collecting plate 20 Lower screw conveyor 21 Grain hoisting machine 22 Upper screw conveyor 23 Cleaning opening 24 Strut 25 Flange (fitting ridge)
26 side cover 27 flange (fitting ridge)
28 Handle 29 Locking hole 30 Engaging pin 31 Bracket 32 Engaging hole 33 Internal cleaning lid

Claims (5)

A pair of grain drying chambers formed of perforated wall steel plates for allowing the grain in the grain storage tank to flow down, a hot air chamber formed inside the pair of grain drying chambers, and a hot air chamber formed outside the pair of grain drying chambers. A grain drying machine comprising: a grain drying section having an exhaust chamber formed integrally with the lower portion of the grain storage tank; A grain dryer comprising: a hot air generating section for blowing hot air to the hot air chamber provided on the front surface of the grain drying section; and a suction fan communicating with the exhaust chamber provided on the rear surface of the grain drying section ,
On both sides of the grain drying section, an opening for cleaning is provided by opening one side of the outer side forming each of the exhaust chambers, and fitting ridges are formed on both side ends and the center of the cleaning opening. By providing a plurality of posts, the upper ends of which are fitted from below the upper edge of the grain drying section and the lower ends of which are screwed to the bottom edge of the cleaning opening, A side cover is detachably erected in the cleaning opening , and a side cover having a fitting ridge formed on a peripheral edge thereof is interposed between the plurality of pillars. A side cover for a grain dryer, characterized in that it is provided with engaging means for overlapping and engaging with the engaging ridges of the support columns adjacent to the cover and detachably engaging the engaging portion.
2. A grain drying machine according to claim 1, wherein said engaging means is an engaging pin which laterally penetrates a fitting portion formed by superimposing said fitting ridges of said side cover onto said fitting ridges of said struts adjacent to each other. side cover in. 3. A side cover for a grain dryer according to claim 1 or 2, wherein the fitting ridges on both side edges of said support are formed by bending both ends of a steel plate forming said support. 4. Any one of claims 1 to 3, wherein said grain drying chamber is provided with an internal cleaning opening on a surface facing said cleaning opening, and said internal cleaning opening is provided with an internal cleaning cover made of an air-permeable member. side cover in grain dryers. A side cover for a grain dryer according to any one of claims 1 to 4, wherein the side cover and the inner cleaning lid are provided with handles.

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