JP6410052B2 - Grain dryer - Google Patents

Description

  The present invention relates to a grain dryer that includes a far-infrared radiator in a drying section and that dries stretched grains with hot air.

  The grain dryer described in Patent Document 1 is provided with a far-infrared radiator on the front end side of the drying section, and can efficiently dry the cereal grains by sequentially circulating hot corn and far-infrared irradiation.

Japanese Patent No. 5228844

  However, with the drying of the grain, the dust in the grain is separated and deposited in the aircraft, and in particular, it is not desirable for safety to deposit near the high-temperature far-infrared radiator. It was necessary to clean and remove dust, which was a heavy maintenance burden in the automatic drying operation.

  An object of the present invention is to provide a grain dryer capable of easily cleaning and removing accumulated dust and reducing a maintenance load while ensuring grain drying efficiency by a far-infrared radiator.

  In the invention according to claim 1, the hot air chamber (11) and the exhaust air chamber (12) opposed to each other across the grain drying passage (13) by the ventilation porous plate are transferred from the front wall (31) to the back wall (32). The hot air is supplied to the hot air chamber (11) from a burner case (6) provided to extend forward from the front wall (31), and a suction / discharge unit (40) provided on the back wall (32). ), The front wall (31) of the exhaust chamber (12) is provided with a far-infrared radiator (23) and a window directly below it. A slit plate (33a) in which (A) is opened and a plurality of slits capable of circulating outside air are formed in the window (A), and a blind plate (33b) capable of opening and closing the slit plate (33a) is provided. Features.

  The invention according to claim 2 is characterized in that, in the configuration of claim 1, the slit plate (33a) and the blind plate (33b) are integrally and detachably supported on the front wall (31).

  According to a third aspect of the present invention, in the configuration of the first or second aspect, a rod (34) is provided which extends in the front-rear direction below the burner case (6) and is connected to the blind plate (33b). 34), the blind plate (33b) is pivotally supported on the slit plate (33a) so as to be able to rotate back and forth.

  According to a fourth aspect of the present invention, in the configuration of the third aspect, the rod (34) is slidably supported at the bottom portion of the burner case (6) and inclined forward and lowered to the front end. A grip (34a) is provided.

  According to a fifth aspect of the present invention, in the configuration of the fourth aspect, the grip (34a) is located behind the front end of the burner case (6) when the blind plate (33b) is in a position to close the slit plate (33a). When the blind plate (33b) is in a position to open the slit plate (33a), the blind plate (33b) is configured to be positioned forward of the front end position of the burner case (6).

  According to a sixth aspect of the present invention, in the structure according to any one of the first to fifth aspects, a driving means for opening and closing the blind plate (33b) is provided, and the blind plate is interlocked with the grain discharging operation after the grain drying operation. (33b) is controlled to open.

  According to the first aspect of the present invention, when cleaning, when the blind plate (33b) is opened under the operation of the suction / discharge section (40), the outside air passes through the slit plate (33a) of the window (A) of the front wall (31). Flows directly under the far-infrared radiator (23), so that it is possible to prevent dust from being deposited below the far-infrared radiator (23).

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the slit plate (33a) and the blind plate (33b) can be integrally attached and detached, the inside of the exhaust chamber (12) by opening the window (A) It becomes easy to check.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the blind plate (33b) to be connected when the rod (34) extending in the front-rear direction under the burner case (6) is operated back and forth. Since it is pivotable back and forth so that it can be opened and closed, the opening and closing of the window (A) of the front wall (31) can be easily adjusted.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, the blind plate (33b) is provided by the grip (34a) at the tip of the rod (34) with the intermediate part supported on the bottom part of the burner case (6). Easy to open and close.

  According to the invention of claim 5, in addition to the effect of the invention of claim 4, the position of the grip (34a) of the rod (34) corresponds to the opening and closing of the blind plate (33b). If it is forgotten to close, the grip (34a) pops out from the front end of the burner case (6), so that the state of the blind plate (33b) that is difficult to be seen can be easily recognized.

  According to the invention according to claim 6, in addition to the effect of the invention according to any one of claims 1 to 5, the blind plate (33b) is opened and the far-infrared radiator (23) Dust accumulated below can be discharged prior to the next grain drying operation.

Front perspective view showing the drying unit structure of a grain dryer A longitudinal sectional view showing the inside of the front side of the drying section Perspective view seen from diagonally below around the cleaning window (when closed) Enlarged perspective view of the cleaning window (when opened) as seen from diagonally below Side view of main part of cleaning window (when closed) (a) and sectional view taken along line SS (b) Side view of main part of cleaning window (when opened) (a) and its sectional view taken along line SS (b) Enlarged perspective view of the cleaning window (when fully open) seen from diagonally below Perspective view of essential parts of the drying section

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.

FIG. 1 is a front perspective view showing the drying unit structure of the grain dryer, and FIG. 2 is a longitudinal sectional view showing the inside of the front side of the drying unit. The grain dryer has a storage unit 2 that receives the squeezed grain and a drying unit 3 that dries the grain from the storage unit 2 and dry with hot air, and the lower part of the drying unit 3 has a grain. Is provided with an elevator 5 (see FIG. 3) that reaches from the cereal collecting part 4 to the storage part 2 through the front part of the machine body.

The front wall 31 of the machine body is provided with a hot air supply unit 6 which is a burner case containing the burner 6a, and the rear wall 32 of the machine body is provided with a suction discharge unit 40 which discharges the exhausted air in a divertable manner by an exhaust air fan 40a. It is configured to be dried while circulating the grains.

The drying unit 3 includes a hot air chamber 11 having openings W and W for receiving hot air from the hot air supply unit 6 on the front side, an exhaust air chamber 12 connected to the suction exhaust unit 40 on the back side, and the hot air chamber 11 It consists of grain drying passages 13 and 13 by a perforated plate that guides the grains received from the storage section 2 while passing hot air between the exhaust air chamber 12 and the grain drying passages 13 and 13 are fed to the lower end thereof. A valve 14 is provided to feed the grains flowing down the grain drying passages 13 and 13 to the grain collecting unit 4 by a predetermined amount.

The grain drying passages 13 and 13 are configured to extend in the front-rear direction of the drying unit 3, and are arranged in a plurality of rows in the left-right direction of the drying unit 3, and are configured to join the lower ends of the two adjacent grain drying passages 13 and 13. A feeding valve 14 that rotates forward and backward is provided at the lower end portion to quantitatively feed the grains in the two grain drying passages 13 and 13 alternately.

The inside of both the grain drying passages 13 and 13 is used as the exhaust air chamber 12, and the outside of the both grain drying passages 13 and 13 is formed with the hot air chambers 11 and 11, respectively. In addition, rhombus-shaped flow dividing portions 13a and 13a are provided on the inlet sides of both grain drying passages 13 and 13, respectively, to ensure a long drying path while receiving a wide range of grains.

Inside the hot air chambers 11, 11, exhaust air return passages 15, 15 communicating from the suction exhaust part 40 to the hot air supply part 6 are provided for high speed drying by using exhaust air. In addition, a far-infrared radiator 23 that promotes moisture transfer inside the grain by far-infrared rays is provided at the front end of the exhaust chamber 12, and far-infrared rays are radiated to the two grain drying passages 13 and 13 facing both sides thereof. To do.

On the front wall 31 of the machine body, a cleaning window A of the exhaust chamber 12 is configured to be openable and closable immediately below the far-infrared radiator 23. The grain drying passages 13 and 13 and the hot air chambers 11 and 11 are configured so that the cleaning windows B and C can be opened and closed, respectively, and the cleaning windows A, B and C can be opened and closed similarly for the rear wall 32. Configure.

The grain collecting unit 4 includes left and right inclined plates 17 and 17 for collecting the discharged grains below the feeding valve 14 and a transfer spiral 18 for transferring the aggregated grains to the elevator 5.

(Cleaning window)
The cleaning window A will be described in detail. An opening / closing lid 33 is provided on the window A and extends below the hot air supply unit 6 as shown in FIG. The rod 34 for opening / closing operation is connected.

As shown in FIG. 4, an enlarged perspective view of the opening / closing lid 33 viewed obliquely from below the cleaning window (when opened) is provided with a wing nut or a fixed slit plate 33a formed with a number of slits or punch holes through which outside air can be circulated. It is detachably attached to the front wall 31 by a fixing tool 33c such as a lever, a blind plate 33b is pivotally supported so that the slit plate 33a can be opened and closed, and a rod 34 is connected to the blind plate 33b. The rod holding member 35 is attached so that the blind plate 33b can be opened and closed.

The blind plate 33b can close the slit plate 33a by the suction force of the exhaust fan 40a, and if necessary, the blind plate 33b can be magnetically attracted.

As shown in FIG. 5, a side view (a) of the main part of the cleaning window part (when closed) and a sectional view taken along the line S-S (b) of the rod 34 are formed by bending a grip 34 a at the tip, Further, two bent portions P1 and P2 for positioning and holding the blind plate 33b are formed.

Specifically, when the rod 34 is pushed to the position where the blind plate 33b closes the slit plate 33a, the grip 34a is disposed on the back side from the front end of the hot air supply unit 6, and the front bent portion P1 is the rod holding member. 35 so as to be positioned and held.

Further, as shown in FIG. 6, a side view (a) of the main part of the cleaning window (when opened) and a sectional view (b) taken along the line S-S shown in FIG. 6, the rod 34 is pulled out and the blind plate 33b opens the slit plate 33a. The grip 34a is disposed on the front side of the front end of the hot air supply unit 6 and the rear bent portion P2 is disposed on the rod holding member 35.

The grain dryer 1 having the above-described configuration opens the blind plate 33b by operating the rod 34 in the front-rear direction, so that the outside air flows directly from the slit plate 33a into the exhaust chamber 12 by the suction force of the exhaust fan 40a. It is possible to discharge the dust in the exhaust chamber 12 including the dust accumulated immediately below the radiator 23.

Next, the internal cleaning of the exhaust chamber 12 will be described. As shown in FIG. 7 which is an enlarged perspective view of the cleaning window portion (when fully opened) viewed from obliquely below, the fixing member 33c of the slit plate 33a is loosened to open and close the lid. By removing 33 from the front wall 31 as a unit, the exhaust chamber 12 can be cleaned by putting a cleaning tool through the fully opened cleaning window A.

Similarly, with respect to the grain drying passages 13 and 13 and the hot air chambers 11 and 11, the dust in the drying unit 3 can be cleaned by opening the cleaning windows B and C of the front wall 31 and the back wall 32, respectively. Maintenance with a cleaning tool is possible from the front side and the back side.

As for the grain drying passages 13 and 13, as shown in FIG. 8 which is a perspective view of the main portion of the drying section 3 shown in FIG. 8, a part of the drying net 41 can be opened and closed and pressed by a stopper. The dust inside the net can be cleaned, and the upper part of the net can be opened and closed by a hinge, so that the net can be opened and closed without dropping bolts or nets into the machine.

Next, in the cleaning mode of the dryer, a mode is provided in which only the exhaust fan 40a is operated, or only the exhaust fan 40a and the valve 14 are operated, and the elevator 5 and the valve 14 can be switched on / off. With this configuration, it is possible to ensure the safety of cleaning work such as drying nets when other grain circulation system equipment is stopped, such as switching of operation points.

In the above, the device being driven is displayed in 7-segment display corresponding to the switching of the operation location, and in the case where a liquid crystal display is provided, the device being driven is displayed in a liquid crystal display, so that the safety of cleaning work such as a drying net Can be secured.

Next, with respect to the opening / closing lid 33 of the cleaning window, the movable slit plate is overlapped with the fixed slit plate so that the opening and closing of the slit portion can be electrically controlled, so that the cleaning portion can be opened and the slit portion can be opened. Moreover, it can clean efficiently by shifting to discharge operation | movement, after opening a slit part.

The openable / closable lid that is electrically openable / closable is provided at the cleaning opening that opens at the front and rear of the exhaust passage in the center of the fuselage, and is configured so that it can be lit with a switch by placing an LED light inside. When the LED light is opened, the LED light is turned on and the LED light is turned on when the cleaning mode is set, so that it can be efficiently cleaned by introducing the outside air during the discharge operation. Makes it easy to check inside.

Further, when the exhaust air temperature does not rise to a predetermined reference temperature in the drying operation, forgetting to close the cleaning port in the drying operation can be prevented by performing an abnormality display for confirming the closing of the cleaning port.

(Technical significance)
The technical significance of the grain dryer with the above configuration is summarized as follows.
A far-infrared radiator 23 is provided on the front wall 31 side of the exhaust chamber 12, and a slit plate 33a and a blind plate 33b capable of opening and closing the slit are provided in a window A opened immediately below the far-infrared radiator 23. When cleaning, if the blind plate 33b is set to the open position under the operation of the exhaust fan 40a, the outside air directly flows from the slit plate 33a of the window A of the front wall 31 and passes directly under the far-infrared radiator 23. Therefore, accumulation of dust below the far-infrared radiator 23 can be prevented.

  The slit plate 33a and the blind plate 33b are integrally and detachably supported on the front wall 31, so that the opening and restoration of the window A can be facilitated when the inside of the exhaust chamber 12 is inspected.

  A burner case 6 that projects over the window A of the front wall 31 and serves as a hot air supply unit, and a rod 34 that extends in the front-rear direction under the burner case 6 and is connected to the blind plate 33 b are provided. The blind plate 33b is pivotally supported by the slit plate 33a so that the blind plate 33b can be rotated back and forth by the direction operation, so that the opening and closing of the window A of the front wall 31 can be easily adjusted by the front and back operation of the rod 34 extending in the front-rear direction. Can be operated.

  The rod 34 is slidably supported at the bottom portion of the burner case 6 and is provided with a grip 34a at the front end so as to be inclined downwardly, thereby supporting the intermediate portion at the bottom portion of the burner case 6. The blind plate 33b can be easily opened and closed by the grip 34a at the tip of 34.

  The grip 34a is configured in a rear position from the front end of the burner case 6 when the blind plate 33b is in a position to close the slit plate 33a, and in a position in front of the front end position of the burner case 6 when the blind plate 33b is in a position to open the slit plate 33a. Therefore, the position of the grip 34a of the rod 34 corresponds to the opening and closing of the blind plate 33b. In particular, if the blind plate 33b is forgotten to be tightened, the grip 34a jumps out from the front end of the burner case 6, so The state of 33b can be easily recognized.

  By providing driving means for opening and closing the blind plate 33b and controlling the opening of the blind plate 33b in conjunction with the grain discharging operation after the grain drying operation, the blind plate 33b is opened each time the grain discharging operation is performed. Thus, the dust accumulated below the far-infrared radiator 23 can be discharged prior to the next drying operation.

1 Grain dryer 6 Burner case (hot air supply part)
DESCRIPTION OF SYMBOLS 11 Hot air chamber 12 Exhaust chamber 13 Grain drying passage 23 Far-infrared radiator 31 Front wall 32 Back wall 33a Slit board (opening-closing lid)
33b Blind plate (open / close lid)
34 Rod 34a Grip 40 Suction / discharge part A Cleaning window

Claims (6)

A hot air chamber (11) and an exhaust air chamber (12) facing each other across a grain drying passageway (13) by a perforated porous plate are configured to extend from the front wall (31) to the rear wall (32) of the fuselage, and the front wall Hot air is supplied to the hot air chamber (11) from a burner case (6) extending forward from (31), and the exhaust air chamber (12) is provided by a suction / discharge part (40) provided on the back wall (32). In a grain dryer that sucks in
The front wall (31) of the exhaust chamber (12) is provided with a far-infrared radiator (23), and a window (A) is opened at a position directly below the far-infrared radiator (23). A grain dryer comprising a slit plate (33a) having slits and a blind plate (33b) capable of opening and closing a plurality of slits of the slit plate (33a).   The grain dryer according to claim 1, wherein the slit plate (33a) and the blind plate (33b) are detachably supported on the front wall (31).   A rod (34) extending in the front-rear direction under the burner case (6) and connected to the blind plate (33b) is provided, and the blind plate (33b) is rotated forward and backward by operating the rod (34) in the front-rear direction. 3. The grain dryer according to claim 1, wherein the grain dryer is pivotally supported by the slit plate (33a).   The rod (34) has an intermediate portion slidably supported on the bottom portion of the burner case (6), and is inclined forward and provided with a grip (34a) at the front end. As described in the grain dryer.   When the blind plate (33b) is in a position to close the slit plate (33a), the grip (34a) is positioned rearward from the front end of the burner case (6), and the blind plate (33b) is inserted into the slit plate (33a). The grain dryer according to claim 4, wherein the grain dryer is configured to be positioned forward from the front end position of the burner case (6) when the position is opened. The driving means for opening and closing the blind plate (33b) is provided, and the blind plate (33b) is controlled to open in conjunction with the grain discharging operation after the grain drying operation. A grain dryer according to crab.