KR100679140B1 - A Seal Device of Multiposition Valve for Drying Machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for feeding valves in grain dryers, and has an object of facilitating the degree of contact of seals with respect to feeding valves of circulating grain dryers.

To this end, in the present invention, a cylindrical feeding valve 7 is provided below the lower end confluence of the grain flow passages 5 and 5 of the drying chamber 3, and the left and right main surface portions of the feeding valve 7 are provided. A seal retainer provided at the lower end of the left and right grains flowing passages 5 and 5 is formed between the top surface and the lower ends of the left and right grain flow passages 5 and 5. The frame body 68 is supported by the support shafts 73a and 73b on the side wall of the machine frame, and the seal 69 is attached to the inner side of the seal retaining frame body 68, and the support shaft 73a on the outside of the machine frame. The adjusting bolt 78 is installed to adjust the rotation, and the contact degree of the seal 69 to the feeding valve 7 is configured to be adjustable.

Circulating, grain, dryer, feed valve, seal, gap adjustment,

Description

A Seal Device of Multiposition Valve for Drying Machine

1 is a cutaway side view of the whole.

2 is a partial cutaway front view of the whole.

3 is a perspective view of an example of a far infrared radiator.

4 is a perspective view of another example of the far infrared radiator.

5 is a perspective view of still another example of a far infrared radiator.

6 is a front view of an operation panel.

7 is a side view of a far infrared radiator.

8 is a side view, a back view, and a plan view of a lid portion.

9 is a rear view of the main portion.

10 is a side view of a far infrared radiator.

11 is a front view of the main part.

12 is an enlarged front sectional view of a main portion.

13 is an exploded perspective view of the main portion;

14 is an exploded perspective view of the gap adjusting mechanism;

Fig. 15 is a plan sectional view of the main portion.

The top view which shows the accommodating state of an upper conveying apparatus.

The side view and front view which show the accommodating state of the upper conveying apparatus.

18 is an enlarged front view showing a housed state of the upper transfer device;

Fig. 19 is an enlarged side view showing a housed state of the upper transfer device.

20 is an enlarged front sectional view of a main portion.

Fig. 21 is a sectional front view of a feeding valve and a seal portion thereof;

Fig. 22 is an enlarged front view of the feed valve seal portion;

Fig. 23 is a plan sectional view of the seal holding body.

24 is a flowchart.

25 is a graph of changes in hot air, air blowing temperature, and grain kernel temperature.

Fig. 26 is a sectional front view of another grain kernel dryer.

Fig. 27 is a plan sectional view thereof.

28 is a schematic diagram illustrating an example of an alarm system.

29 is a side cross-sectional view of a water meter.

30 is a plan view of an elevator with a moisture meter.

31 is a time comparison table of an example of moisture measurement.

32 is a flowchart

33 is a flowchart

<Description of the code | symbol about the principal part of drawing>

1: machine frame of grain dryer

2: storage tank

3: drying chamber

4: Grain Room

5: grain downflow

6: hot air chamber

7: feeding valve

7a: outflow opening

10: far infrared emitter

16: wind room

25: lower conveying device (circulating conveying means)

30: elevator (circulation transfer means)

31: upper conveying device (circulating conveying means)

67: left and right gap

68: seal retaining frame

69: seal

73a, 73b: support shaft

73c: lock hole

74: arm

75: Lock Bolt

78: adjustment bolt

81: inspection window

A: clearance adjustment means

The present invention relates to a seal device of a feeding valve in a grain dryer.

In the circulation type grain dryer, a cylindrical feeding valve for feeding grain grains while reversing is provided below the bottom confluence of the left and right grain flow passages of the drying chamber, and the left and right main surface portions of the feeding valve are provided. ) And the lower left and right gaps between the left and right grain down flow passages, and the seal retaining frame having a cross-sectional yaw shape is axially supported on the side wall of the machine frame at the lower end of the left and right grain down passages. It is known to provide a seal in contact with the feed valve on the inner side of the seal retaining frame, and to open and close the seal retaining frame to open and close the seal of the seal retaining frame and the left and right gaps of the feed valve (for example, a Japanese seal). See Gongju 1-14580).

In addition, in the circulation type grain dryer, it is also known that the seal holding frame is configured to be removed from the opening of the side wall of the machine frame in the lateral direction or the front-rear direction (for example, Japanese Patent No. 3316616).

 The conventional sealing device of the feed valve is configured to open and close the left and right gaps for the treatment of the remaining grain, it is difficult to adjust the seal supported on the seal holding frame to the proper contact state with respect to the feed valve, When the seal was worn, there was a defect that the grain kernels leaked out.

Accordingly, the present invention seeks to eliminate such defects.

In order to solve the above problems, the present invention has been made the following technical means.

According to the invention described in claim 1, the upper storage tank (2), the drying chamber (3) in the middle, the grain collecting chamber (4) for collecting the grains that have been dried under the lower portion, and the grain collected in the grain chamber (4) In the grain dryer consisting of the circulation conveyance means provided with the elevator 30 and the conveying apparatuses 25 and 31 which reduce | restore to the said storage tank 2 WHEREIN: The grain flow passages 5 and 5 of the left and right of the drying chamber 3 are provided. A cylindrical feeding valve 7 for feeding grain kernels while reversing at the lower portion of the lower confluence of the lower portion of the confluence, between the left and right main surface portions of the feeding valve 7 and the lower end portions of the left and right grain down passages 5 and 5; The seal retaining body 68 constitutes a left / right gap 67 and is provided below the lower ends of the left and right grain flow passages 5 and 5, and opposes the left and right portions of the feed valve 7. ) By the support shafts 73a and 73b along the shaft center of the feed valve 7 on the side wall of the machine frame. At the same time as the shaft support, a seal 69 facing the contact valve 7 is attached to the inner side of the seal retaining frame 68 so as to adjust perspective between the seal 69 and the feed valve 7. It was comprised so that the clearance adjusting means A which rotates the said support shaft 73a, 73b on the outer side of the side wall of a machine frame was set as the seal | sticker apparatus of the feed valve in a grain dryer.

According to the above configuration, the grains deposited in the upper storage tank 2 are heated by the hot air chamber on the center side of the drying chamber 3 while the grain flow passages 5 and 5 on the left and right sides of the drying chamber 3 flow down. Drying is carried out by hot air flowing from (6) to the left and right air vent chambers 16 on both sides. The grains which flow down to the lower ends of the left and right grain flow passages 5 and 5 and are joined are fed by the feeding valve 7 which repeats the forward rotation or the reverse rotation, and are stored in the lower grain collecting chamber 4 and the circulation transfer. The means 25, 30, 31 are conveyed in the state of lifting the grain and are reduced to the storage tank 2.

In addition, the feed valve 7 provided below the lower end confluence part of the left and right grain flow passages 5 and 5 of the drying chamber 3 is axially supported by the support shafts 73a and 73b on the side wall of the machine frame. The seals 69 of the seal holding body 68 which are in contact with each other face each other, and the left and right gaps formed between the left and right main surface portions of the feeding valve 7 and the lower ends of the left and right grain flow passages 5 and 5 ( 67 is sealed, and the degree of contact between the seal 69 of the seal holding body 68 and the feeding valve 7 can be adjusted perspectively by the gap adjusting means.

The invention described in claim 2, in addition to the invention described in claim 1, supports the seal holding frame 68 for attaching the seal 69 to the machine frame sidewalls via the support shafts 73a and 73b. The interlocking arm 74 of the clearance adjusting means A is integrally provided to one of the supporting shafts 73a among the supporting shafts before and after, respectively. In addition, the support shaft 73a was used as the seal device for the feeding valve in the grain dryer, which is detachably attached to the seal holding frame 68.

According to the said structure, in addition to the said operation | movement of invention of Claim 1, one of which the support shaft 73a, 73b was installed back and forth comprises the interlocking arm 74 of the clearance adjustment means A integrally. In addition, they are separated from the seal holding body 68, and the other holding shaft 73b is detachably held on the side wall, while the seal holding frame 68 is held by the integration with the supporting shaft 73a side. Can be removed or removed.

      In addition to the invention described in Claims 1 and 2, the invention described in Claim 3 corresponds to the exhaust chamber 16 of the drying chamber 3 in the vicinity of the shaft support portion of the seal holding body 68 on the sidewall of the machine. Grain characterized in that the inspection window 81 is freely opened and closed at the site, and the seal holding body 68 and the seal 69 removed from the support shaft 73a can be removed from the inspection window 81. It was set as the sealing apparatus of the feed valve in a drier.

According to the said structure, in addition to the said operation | movement of invention of Claim 1 and Claim 2, the seal holding frame body 68 and the seal 69 which removed from the support shaft 73a are the seal holding frame body in a side wall of a machine frame. In the vicinity of the shaft support part of 68, it can extract from the inspection window 81 which can open and close comprised in the site | part corresponding to the ventilation chamber 16 of the drying chamber 3 freely.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing.

First, the whole structure of the grain dryer provided with this invention is demonstrated. 1 is a machine frame of a grain dryer, and is laminated | stacked in order of the storage tank 2, the drying chamber 3, and the grain chamber 4 inside. In the drying chamber 3, the inclined grain flow passages 5 and 5 are formed by opposing the breathable meshes 5a and 5a from side to side, and a pair of left and right grain flow passages 5 and 5 are faced from the front. When looking at it, it is formed in V shape. The upper side of each grain-flowing passage 5 and 5 further makes the inside of the left and right grain-flowing passages 5 and 5 a space section of a cross-sectional ridge so as to form a V shape, and this space portion is a hot air chamber 6 To form). In addition, the lower half of the space-forming body of the ridge-shaped cross section is constituted by the ventilation network, and the upper half of the V-shape is constituted by the non-breathable sheet material.

A feeding valve 7 is provided below the left and right confluences at the bottom of the grain flow passages 5 and 5. The feeding valve 7 is composed of a cylindrical body having a circular cross section, and receives grain from an inlet formed in a part of the outer circumference according to the forward and reverse rotations, and the lower grain collecting chamber 4 along the forward and reverse rotations. It is the structure to drop to).

In the hot air chamber 6 formed in the ridge space inside the drying chamber 3, a far-infrared radiator 10 formed of a polygonal tubular shape and extending from the front side wall to the rear side wall of the drying chamber 3 is disposed. Removability is fixed freely to the front and rear of the machine frame wall, respectively. The cross-sectional shape of this far-infrared radiator 10 is composed of a substantially hexagonal shape which connects the upper inverted V shape and the lower V shape in a short vertical portion so as to correspond differently to the cross-sectional shape of the ridge space portion. Slit-shaped openings 11 and 12 are formed at the protruding end and the lower protruding end, and the left and right half portions are arranged so as to face each other with a predetermined gap substantially (see Fig. 3). Furthermore, the attachment to the front and rear walls of the left and right parts is attached to the front wall with bolts and nuts by means of the locking holes 26 that extend beyond the front upper part of the left and right parts, and the front of the left and right parts. Detachable fastenings are secured to the front and rear walls by bolts and nuts, respectively, by the locking holes 27 and 27 for installing the lower and rear upper and lower parts independently.

The inlet side of the far-infrared radiator 10 is configured to receive hot air from a burner 13 placed in front of the dryer. That is, for example, a burner wind cylinder 14 having the vaporized burner 13 disposed at the center thereof is provided on the side wall of the body, and the burner wind cylinder 14 communicates with the inlet of the far-infrared radiator 10. Doing.

A suction fan (Fan) 15 is provided on the back side of the gas, and the grain flows through the grain flow down passages (5, 5) from the hot air chamber (6), which is a ridged space, by the wind generated in the suction fan (15). It is comprised so that it may be ventilated toward the ventilating chambers 16 and 16 formed in the outer side of the flow path 5 and 5. As shown in FIG.

The collecting chamber 4 is provided with the lower conveying apparatus 25 provided with the conveyance spiral in the center, and receives the grain kernels which were fed from the feeding valve 7 from the lower conveying apparatus 25, for example, to the front side of a base body. Transfer. An elevator 30 is provided on the front side of the body, and a bucket 30a is provided therein, and the beginning of the upper conveying device 31 which lifts grain grain from the lower conveying device 25 and installs it on the upper ceiling. It is configured to lift the grain into the parts. The vertical downward axis 32 is provided in the ceiling center part of the terminal side of the upper conveying apparatus 31 provided with a feed spiral, and the rotary diffuser plate 33 is provided in this vertical downward axis 32. As shown in FIG. .

      In addition, as shown in FIG. 6, an inlet air passage body 36 in which an external air inlet slit 36a is formed to surround the burner air passage body 14 is provided on the front face of the machine frame. The dryer controller (control part 40) is provided in the front surface. The operation panel 41 of the controller 40 is provided in the front of the inlet air passage body 36. The operation panel 41 includes a charging switch 42, a ventilation switch 43, a drying switch 44, a discharge switch 45, and a stop switch 46. Mode) and stop operation. In addition, when the emergency switch 47 is provided and the emergency switch 47 is operated, the entire gas operating part can be stopped at substantially the same time.

In addition to these switches 42 to 47, a charge amount setting switch 48 for setting a charge amount, a water setting switch 49 for setting a final finish moisture value, and a drying setting switch 50 (drying speed in the case of rice drying) Is set to fast, normal and slow, and in the case of other grain kernel drying, for example, at a drying rate set in advance with respect to varieties such as wheat and barley). Furthermore, timer increase / decrease switches 51 and 52 are provided for drying the drying finish by the processing time without depending on the moisture value.

The moisture detection means 53 (shown in Fig. 1) employs a grain-type moisture meter, measures the moisture value in predetermined grain units every predetermined time, and averages a predetermined number of detection results to calculate the moisture value. The display unit 54 of the operation panel 41 alternately displays the detected hot air temperature and the like. The control unit 40 also serves as a configuration capable of judging the variation of moisture from one grain moisture value or judging a large or small amount of immature grain, and displaying these by three LEDs 55 and 56. .

In addition to inputting drying information or the like from the switch of the operation panel 41, the control unit 40 receives detection information from various sensors to control the amount of fuel supplied to the vaporized burner 13, or to transfer grain grain. The means is configured to control operation.

Next, the operation of the above configuration will be described.

Grain grains fed into a hopper (not shown) are charged into the storage tank 2 via an elevator 30, an upper conveying device 32, etc., driven by turning on a charging switch (not shown). do. When charging of the grains of grain is completed, the process proceeds to the drying operation. However, in the previous step, the moisture setting switch 49 and the drying setting switch 50 set the type of grain kernels and the desired dry finish moisture value.

When the drying switch 44 is turned on after the above setting operation is completed, driving of the elevator 30, the up / down conveying devices 25 and 31, the feeding valve 7 and the like is started, and the burner ( 13) is also driven so that hot air is supplied toward the inlet of the hot air chamber 6, which is the ridge space of the drying chamber 3.

Here, the flame of the burner is heat-weathered by the rotation of the suction fan 15, is introduced into the far-infrared radiator 10 while being mixed with the outside air introduced appropriately, and is formed at the upper and lower portions while heating the far-infrared radiator 10. It flows out of the far-infrared radiator 10 via the slit-shaped openings 11 and 12 which are made. At that time, the far infrared rays are radiated from the surface of the far infrared radiator 10 by the heating of the far infrared radiator 10, so that the heat radiation and the hot air act on the grains of grain flowing down the grain flow passages 5 and 5 together. In addition, the transfer of moisture in the grain kernel is promoted by radiant heat and hot air caused by far-infrared rays, and the efficient drying action is performed by the action of removing water by hot air.

The radiation effect of far-infrared radiation and hot air are carried out before and after the grain downflow passages 5 and 5, and the hot air passing through the grain downflow passages 5 and 5 passes through the exhaust chambers 16 and 16. do. The grains dried in the drying chamber 3 are returned to the storage tank 2 again via the lower conveying device 25, the lifter 30, and the upper feed spiral 31 of the grain chamber 4 to be crude. To take action. This process is repeated, and drying ends when a predetermined moisture value is reached.

In the embodiment shown in FIG. 3, since the cross-sectional shape of the far-infrared radiator 10 is configured to substantially conform to the cross-sectional shape of the grain-flowing passages 5 and 5, the grains flowing down the far-infrared radiation from the far-infrared radiator 10 It can act on the grain evenly.

In addition, in the Example shown in FIG. 3, the slit-shaped openings 11 and 12 are comprised by arrange | positioning the far-infrared radiators 10 and 10 to a left-right symmetrical shape, and arrange | positioning the gap in the hot air chamber 6 up and down. Therefore, hot air flows out from both the upper and lower surfaces, and overheating of the far-infrared radiators 10 and 10 can be prevented.

4, the slit-shaped opening 11 is formed only in the upper one side of the far-infrared radiator 10, and the lower side does not blow hot air but only the lower side of the far-infrared radiator 10 by burner hot air. You may comprise so that heating may be promoted. In addition, a dust prevention shielding member 28 may be provided so as to optimize the temperature distribution in the hot air chamber 6.

In addition, as shown in FIG. 5, the slit-shaped lower opening 12 is formed only on the lower side of the far-infrared radiator 10, and the upper side of the far-infrared radiator 10 is formed by only burner hot air without blowing hot air on the upper side. You may comprise so that the heating of the side may be promoted.

In addition, as shown in FIG. 7, the far-infrared radiator 10 may be disposed in the hot air chamber 6. That is, the rear part of the far-infrared radiator 10 is closed by the lid 61, and the gap is vacated with respect to the rear wall 62 of the base frame 1, and the far-infrared radiator 10 is installed by a bracket. Then, hot air temperature sensor 63 and exhaust air temperature sensor 64 are provided on the left and right of the rear end portion of the far-infrared radiator 10. In addition, as shown in FIG. 8, when the mounting pieces 61a and 61a are integrally formed by press working on both left and right sides of the lid 61, the lid 61 is provided on the far-infrared radiator 10 while reducing the number of parts. ) Can be installed firmly.

As described above, since a predetermined gap is provided between the far-infrared radiator 10 and the rear wall 62, the temperature of the rear portion of the hot air chamber 6 does not increase excessively in part, and the hot air temperature sensor 63 and the exhaust air temperature are not. The detection temperature of the sensor 64 can be optimized.

9, the slit 65 may be provided below the site | part corresponding to the rear part of the far-infrared radiator 10 of the rear wall 62. As shown in FIG. By this configuration, the temperature distribution can be equalized by preventing excessive rise in temperature at the rear end portion of the hot air chamber 6 by intake of outside air from the slit 65, and the hot air temperature sensor 63 and the exhaust air temperature sensor 64 make it possible. Proper temperature detection can be achieved.

In addition, the far-infrared radiator 10 may be constituted by a heat-dissipating steel sheet. Compared to the application of far-infrared radiation paint to heat-resistant steel sheets or the like, the process can be omitted to reduce costs in terms of assembly production.

10, the lower part of the far infrared radiator 10 may be made closed, and the opening part 66 may be comprised only in the front part of an upper part. By providing the opening 66 only in the front part near the burner 13, the temperature of the front part of the far-infrared radiator 10 rises and the temperature distribution before and behind the hot air chamber 6 can be equalized. That is, the inlet side close to the burner cannot be affected by the flame much, the heat tends to flow backwards, and the temperature at the hot air chamber inlet side tends to be low, and the opening 66 is provided to solve this problem. To achieve uniform temperature distribution.

Moreover, the far-infrared radiator 10 in FIG. 10 is comprised in order to ensure the intensity | strength by connecting the lower slit part suitably for every gap.

In addition, as shown in FIG. 11, the far-infrared radiator 10 is arrange | positioned in the center of the hot air chamber 6, and the clearance gap between the left and right outer periphery of the far-infrared radiator 10, and the left and right grain-flowing passages 5 and 5 is shown. You may make it right and left equal. In this way, the wind speed distribution in the hot air chamber 6 of the intake air is equalized, and a stable temperature distribution can be achieved. In addition, the left, right, middle, and lower surface portions 10a, 10a, 10b, 10b, 10c, and 10c of almost hexagonal cross sections of the far-infrared radiator 10 and left and right grains flow down. The upper passages 5b and 5b, the intermediate passages 5c and 5c and the lower passages 5d and 5d of the passages 5 and 5 can be opposed to each other, and the entire hot air chamber 6 can be warmed evenly by radiant heat. There is a number.

Next, the seal structure of the feed valve 7 will be described with reference to FIGS. 12 to 15.

Below the lower end confluence of the left and right grain flow passages 5 and 5, cylindrical discharge valves 7 are provided to feed grains while repeating the electrostatic and reverse movements in a cylindrical cross section. The feeding valve 7 constitutes an feeding opening 7a for feeding grain grains corresponding to the full widths of the grain flow down passages 5 and 5, and the left and right main surface portions of the feeding valve 7 and the left and right grains. Left and right clearances 67 and 67 are formed between the lower ends of the flow passages 5 and 5.

The left and right seal retaining frames 68 and 68 in cross-sectional recesses are disposed below the lower ends of the left and right grain down passages 5 and 5 and on both left and right portions of the feeding valve 7. That is, the outer frame body 68a formed in the cross-sectional U shape and the inner frame body 68b which couple | bond with the outer frame body 68a are comprised integrally. Inner portions of the seal holding bodies 68 and 68, that is, corners of the inner frame body 68b, have bolts 69 and 69 facing and facing the feed valve 7 using the pressing plate 69a. · Fixation is fixed freely with nut. Brackets 70a and 70b are provided at both front and rear ends of the seal holding bodies 68 and 68, and the support holes 71'a and 71'b of the front and rear walls 71a and 71b of the machine frame 1. ) And the support shafts 73a and 73b before and after are inserted into the support holes 70'a and 70'b of the brackets 70a and 70b, so that the seal retaining bodies 68 and 68 are front and rear walls 71a. 71b) is freely rotatable (B). This pivot shaft B is provided with the arm 74 in the front support shaft 73a, and this arm 74 is comprised so that rotation is possible along the outer side of the front wall 71a.

Then, when the feeding valve 7 is reversed by the forward reverse driving means (not shown), the right and left sides of the feeding valve 7 are rotated while the feeding opening 7a of the feeding valve 7 is rotated above the left and right seals 69 and 69. Grain grains from the grain grain downflow passages 5 and 5 of the present invention are taken into the feed valve 7, and the inside grain grains are fed while the feed valve 7 rotates below the left and right seals 69 and 69. It is a configuration to feed down.

In the case where the front arm attaching support shaft 73a is attached to the support holes 70'a and 70'b of the brackets 70a and 70b, the support shaft attaching the arm 74 is rounded off. (I) of the lock bolt 75 which is provided in the bracket 70a by plural lock holes 73c which are arranged in the rotational direction on the main surface of the support shaft 73, and constituted a plurality of awl holes. The tip is selectively caught by either of the lock holes 73c, so that the mounting angle of the arm 74 with respect to the seal retaining bodies 68 and 68 is configured to be adjustable, and the seal 69 to the feed valve 7 is provided. It is designed to roughly adjust the contact accuracy.

Further, bending pieces 76 and 76 are provided above and below the front wall 71a, and adjusting bolts 78 are installed to penetrate the bending pieces 76 and 76 up and down, and the adjusting bolt 78 is provided. The adjuster 79 is screwed together with a nut 80. 77 is a lock nut which is screwed on the lower side of the bolt 78 and fixes the bolt 78 between the bent pieces 76 and 76. Thus, when the adjusting bolt 78 is rotated forward and backward, the adjusting body 79 is configured to move up and down.

 The arm 74 is moved upward and downward by engaging the long hole 74a of the arm 74 with the bolt 80a which is screwed to the support hole 79a provided in this adjuster 79. By interlocking with each other, the support shaft 73a is rotationally interlocked in the normal region around the rotation axis B. Thus, by rotating the adjusting bolt 78, the seal holding body 68 is rotated through the arm 74 of the support shaft 73a, and the contact between the seal 69 and the feeding valve 7 can be finely adjusted. (Gap adjusting means A).

Furthermore, a supporting wall 71b for penetrating and supporting the support shaft 73b is formed in the wall of the rear face, and three of the support shaft 73b, the bracket 70b, and the seal holding frame 68 are integrally formed. In the assembling order, the front support shaft 73a is removed, and the seal holding frame 68 is held by the mounting of the support shaft 73b, and then the support shaft is attached to the front bracket 70a. (73a) and clearance adjustment means.

In addition, in the vicinity of the left and right outer periphery of the shaft support part of the seal holding body 68 in the front and rear side walls 71a and 71b, that is, the shaft support part of the front and rear side walls 71a and 71b, the drying chamber 3 is further provided. The inspection window 81 is provided in the site | part corresponding to the ventilation chamber 16 of this, and the inspection window 81 is comprised so that opening and closing is possible by the inspection lid 82.

In such a configuration, when the lock bolt 75 and the bolt 80a are released, the support shaft 73a is removed from the bracket 70, and the support shaft 73a is removed by the seal holding frame 68. The retaining frame 68 (and the seal 69) is in a state of only support by the other support shaft 73b, and the long seal retaining frame 68 and the seal 69 are moved out of the machine on the front wall. It can be taken out from the inspection window 81. In addition, the inspection and adjustment of the seal 69 and the seal retaining frame body 68 can be easily performed from the inspection window 81, thereby improving the maintainability.

Next, the Example of the seal structure of the feed valve 7 is demonstrated based on FIGS. 21-23.

The sealing device faces the breathable meshes 5a and 5a from side to side in the drying chamber 3 of the grain kernel dryer to form the inclined grain flow passages 5 and 5, and the pair of left and right grain flow passages. When (5, 5) is viewed from the front, it is formed in a V shape, and a feed valve (7) is provided below the left and right confluences at the lower stage, and the left and right main surface portions of the feed valve (7) and the left and right grain flow. In order to close the left and right gaps 67 and 67 formed between the lower ends of the lower passages 5 and 5, the seal holding bodies 169 and 169 facing the feeding valve 7 are supported by the seal holding frame. The seal holding frame 168 is rotatably installed around the axis B along the body back and forth, and is switched to a first posture for closing the gap and a second posture for opening the gap. And a point excess spring 176 that is pushed in the first posture between the seal retaining frame 168 and the body. In this configuration, the seal 169 is normally in contact with the feed valve 7 in the first posture, and the gap 167 is closed. However, when the foreign matter has flowed into the gap 167, the seal 169 is used. In addition, downward pressure pressure acts on the seal holding body 168 to resist the pushing force of the spring exceeding the point 176, and the seal holding frame 168 is rotated to be switched to the second posture, and excessive pressure is applied. It is possible to prevent the risk of being damaged by acting on the peripheral member.

Also, a position detecting means for detecting that the seal holding body 168 is not in the first posture is provided, and a control means for stopping the output of the grain kernel charging command to the grain kernel dryer based on the detection result of the position detecting means. By configuring the seal device of the feeding valve in the grain kernel dryer, it is provided that if the position detecting means detects that it is not in the first posture, each of the operating components or parts thereof required for the grain kernel charging operation is started. Since it does not output, it can prevent unexpectedly charging and overflowing from the gap 167.

The specific structure of the sealing apparatus of this embodiment is demonstrated in detail below.

Below the lower end confluence of the left and right grain flow passages 5 and 5, a cylindrical feeding valve 7 for feeding grain grains while repeating the electrostatic and inverting into a cylindrical cross section is provided, and this feeding valve 7 is provided. In the constitution, a feeding opening 7a for feeding grain grains corresponding to the full width of the grain pouring passages 5 and 5 is formed, and the left and right main surface portions of the feeding valve 7 and the left and right grain pouring passages 5 and 5 are provided. Left and right clearances 167 and 167 are formed between the lower end portions of the edges.

The left and right seal retaining frames 168 and 168 of the cross-sectional shape are disposed below the lower ends of the left and right grain down passages 5 and 5 and on both left and right sides of the feeding valve 7. The outer frame body 168a formed in the shape and the inner frame body 168b which couple | bond with the outer frame body 168a are comprised integrally. An inner part of the seal holding body 168, 168, that is, a corner of the inner frame 168b, for holding the seals 169, 169 in contact with the feeding valve 7 in contact with each other. (Pack of 169a) is used for attaching and detaching freely with a bolt and nut. That is, the seal is made of rubber, and the base thick part 169b is coupled to the engaging recess 0169c of the paper 169a, and the tip thin part 169d of the seal is made of rubber. It can be in contact with the outer circumference of the feed valve 7.

Brackets 170a and 170b are provided at the front and rear ends of the seal holding bodies 168 and 168, and the support holes 171'a and 171'b of the front and rear walls 171a and 171b of the machine frame 1 are provided. And front and rear support shafts 173a and 173b are inserted into the support holes 170'a and 170'b of the brackets 170a and 170b, and the seal retaining frames 168 and 168 are front and rear walls 171a. , 171b) is pivotally supported freely. The arm 174 is provided in the front support shaft 173a with respect to the rotation shaft center B, and this arm 174 is comprised so that rotation is possible along the outer side of the front side wall 171a. An arm 174 is integrally provided with the seal holding frame 168 at one end of the front and rear support shafts 173a and 173b, and a point excess spring (between the tip of the arm 174 and a predetermined point of the machine frame) 176). 177 is an adjusting bolt for adjusting the tensile strength of the spring 176. The state of the first posture in which the seal retaining frames 168 and 168 are stopped by contacting the lower ends of the breathable meshes 5a and 5a by the spring force of the spring 176 (solid line in Fig. 22) and the seal exceeds the point. It is the structure which can be switched to the 2nd attitude | position (imaginary line in FIG. 22) which inverts the holding frames 168,168. In the first posture, the seals 169 and 169 are in contact with the outer circumferential surface of the feed valve 7, and in the second posture, the seals 169 and 169 are separated from the outer circumferential surface. When the load is applied to the seal retaining frame 168 as the foreign material is picked up in the first posture, the spring 176 extends to allow rotation around the axis of the seal retaining frame 168 so that the spring exceeds the point. 176), the configuration is switched to the second posture. Moreover, the second posture can be stopped at the free length of the spring 176. In the second posture, a limit switch 178 (position detection means) which is turned on by the movement of the arm 174 is installed to take measures such as reporting the ingress of foreign matter.

FIG. 24 is a structure which does not receive a charging operation by the ON output of this limit switch 178. FIG. The charging switch 42 is turned ON to enter the charging operation (step 101), but foreign matter is introduced in the previous drying operation so that the foreign matter is separated between the seal retaining frame 168 and the feed valve 7. When the spring 176 exceeds the point and the seal retaining frame 168 retracts and remains in the second posture, the limit switch 178 is turned ON (step 102). By the ON, an abnormal state is reported by a buzzer or an alarm lamp (step 103), and the driving of the elevator 17 is stopped (step 104). It is configured to prompt the return to the first posture from the retraction movement (second posture) and not to accept the charging operation. Furthermore, in step 102, the limit switch 178 is turned off (OFF) and the first posture is performed. When it is confirmed, it is the structure which can drive a lift and perform charging operation (step 105).

The conventional seal device is freely rotated so that the support member for supporting the seal opens and closes a wide gap for the purpose of rapid certainty of grain grain discharge and seal replacement, but this opening and closing movement is only performed by human hands. This is because the operation of the machine is stopped, and there is a possibility that the miscellaneous material mixed in the grains of grains may get into the gaps and cause damage to the peripheral components.

When configured as in the present embodiment, as the foreign matter enters the seal retaining frame body 168 and is switched to the second posture, it is possible to prevent inadvertent damage, and also to store the grain of the loaded grain during the charging operation. 4) It is possible to prevent the occurrence of abnormal deposition on the part. In the above example, the limit switch 178 as the position detecting means of the seal holding frame 168 is configured to detect the second posture. However, the limit switch 178 may be configured to detect the first posture. In order to detect either pose of a 2nd pose, you may arrange | position to each. What is necessary is just a structure which can detect what is not in a 1st posture at least. Therefore, if it is detected that the position detecting means of the seal retaining frame body 168 is not in the first posture, it does not accept the charging switch output and prohibits the starting of the grain kernel charging and conveying means such as an elevator, thereby preventing the loading of the grain kernel. Therefore, the seal 169 is not discharged from the outer circumferential side of the feeding valve 7 unsuitably even at positions other than the first posture.

In addition, when the tensioning force of the spring can be adjusted by the adjustment bolt 177 as in the above example, the second seal according to the inheritance of the foreign matter by supporting the seal retaining frame 168 with an appropriate tensioning force while absorbing individual manufacturing errors The retraction movement to the posture is smooth.

Next, the main body structure of a grain dryer is demonstrated based on FIGS. 16-19.

On the lower machine frame 1a in which the lower part of the drying chamber 3 and the grain chamber 4 are incorporated, the intermediate machine frame lb built in the upper part of the drying chamber 3 is laminated, and the inside is placed on the intermediate machine frame 1b. The upper machine frames 1c and 1c having the storage tank 2 are stacked to constitute a grain dryer. The lower machine frame la is provided with a lower portion of the combustion chamber 6 on the left and right sides, a lower portion of the grain flow passages 5 and 5, a lower portion of the exhaust chamber 16, and a grain chamber 4. And reinforcement of the front and rear pairs of reinforcing rods 83 and 83 between the lower end of the lower machine and the lower machine frame 1a, and the left and right sides of the grain chamber 4 in the front wall 71 of the lower machine frame 1a. The insertion opening 84 is formed in the upper part, and the upper conveyance apparatus 31 which is an elongate object is attached to the upper machine frame lc freely in the front-back direction.

Therefore, the upper conveying apparatus 31 removed from the upper machine frame lc is inserted toward the rear side from the insertion opening 84 of the front wall 71 of the lower machine frame 1a, and the reinforcing rods 83 and 83 are inserted. To support the trough portion of the upper conveying device 31 to hold the hopper portion 31b upward, and to store the upper portion of the hopper portion 31b and the upper end portion of the lower machine frame 1a. The upper conveying apparatus 31 can be connected to the lower machine frame 1a using the attachment bracket 85 which connects the lower conveying apparatus 25 and the elevator 30. As shown in FIG.

Therefore, the upper conveying apparatus 31 can be accommodated in the side of the connection cylinder 86 to the elevator 30 of the lower conveying apparatus 25, and it is packed compactly, while aiming at common use of components. The transport space can be made small.

Next, the grain kernel horizontal charging apparatus of a grain dryer is demonstrated.

A horizontally loaded hopper (not shown) can be freely opened and closed, for example, on the right side wall 1d of the intermediate machine frame 1b stacked on the upper part of the lower machine frame la, and grain grains are provided on the transverse side of the body. It is configured to be charged. A bracket 87 is provided at the lower end of the right side grain kernel down passage 5, and the seal 69 and the stay 88 of the feed valve 7 are attached to the bracket 87 together with bolts and nuts. The guide plate 89 along the front-rear direction of the grain chamber 4 is attached to this stay 88 by bolt and nut freely (Fig. 20).

Since it was comprised as mentioned above, by adjusting the space | interval of the guide plate 89 and the grain chamber 4 suitably, the fall amount of the grain of the charged grain was optimized and the spiral of the lower conveyance apparatus 25 was aimed at simplifying a structure. To prevent overloading, grains can be loaded smoothly.

25 is related to the improvement when the grain kernel temperature Tg is represented by the hot air chamber temperature Tb and the exhaust gas chamber temperature Te. From the relationship between hot air temperature and exhaust air temperature,

Grain Grain Temperature (Tg) = K × Tb + (1-K) × Te

It is expressed as Here, K represents the mixing ratio of the exhaust wind temperature and the hot wind temperature, and K = (k × t) / M. k is a value for determining the ratio between the wind and hot air, t is a coefficient according to the drying time, M is a coefficient depending on the amount of charge. Conventionally, since grain grain temperature was simply calculated from the wind and hot wind temperatures, the difference between the calculated grain grain temperature (Tg ') and the actual grain grain temperature (TG) was not increased when the grain grain temperature at the beginning of drying did not rise. As a result, when the grain grain temperature is reflected in the moisture value, an error becomes large. By the way, as mentioned above, the coefficient K of the air wind temperature Te and the hot air temperature Tb adds the ratio k, the drying time t, and the charge amount M of the hot air and the air wind more accurately. The grain kernel temperature (Tg) can be calculated. 26 and 27 are improved to the configuration in which the storage tank 2 also serves as dry rice storage. That is, the duct (Duct, 180) is circulated through the grain kernel dryer 184, and hot air can be introduced from the hot air generator 181 at one end thereof, and the grain kernel is dried to promote moisture migration between the grain kernels. In addition, the drying rate is accelerated, and at the time of rice storage, cold air from a predetermined refrigeration unit (Unit, 182) is introduced into the duct 180 so as to be introduced. In this configuration, the drying speed is promoted during the drying operation, and the low temperature storage is performed during the rice storage, thereby enabling low temperature storage. The duct 180 connected to the refrigerating unit 182 is the first duct 180a which extends out of the refrigerating unit 182 and reaches one end of the air passage body 183a configured on the rear side of the horizontally inserted hopper 183, and the air passage body. The spaces 184a, 184b and 184b, which are portions corresponding to the hot air chamber and the air exhaust chamber in Fig. 2, are sealed from 183a to be reduced to the refrigeration unit 182. 184c is a grain grain downflow passage, 184d is a feed valve, 184e is a lower feed spiral, and 184f is a lift, and the grain grain is sequentially moved to reduce the transfer to the upper storage tank (184g). 184h is a suction fan which sucks the air which enters the said space part 184a * 184b, 184b via the grain kernel down passage 184c.

The horizontally loaded hopper 183 installs the air passage body 183a in response to the back surface of the grain kernel receiving portion 183b, which forms a ventilation hole through which grain grain does not leak down, and accommodates the grain kernel. The part 183b and the air passage body 183a are comprised so that it may open and close in the side surface of the grain kernel dryer 184 integrally. In this open position, the cool air introduced from the refrigeration unit 182 is introduced via the first duct 180a, and the cool air discharged upward from the vent hole acts on the grains of the grain to prevent evaporation. . In addition, if the vent hole is blocked with a lid (not shown) and the side of the grain kernel dryer 184 is closed in a closed position, the cool air in the first duct 180a is almost entirely via the air passage body 183a. It is the structure which is reduced to the refrigerating unit 182 via this 2nd duct 180b, and is air-adjusted again and contributes to circulation of the duct 180 (dashed line arrow of FIG. 26, FIG. 27).

When the hot air generator 181 is mounted in place of the refrigeration unit 182, the first air duct 180a is reduced through the second duct 180b and is reduced to the hot air generator 181. As a specific example of the hot air generator 181, an electric heater is employed. Moreover, in order to distribute cold air and hot air in the forward and reverse directions in the duct 180, a fan for ventilation to be switched to the forward and reverse is connected to the duct 180.

When configured as described above, in grain drying, the hot air generator 181 is connected to the first and second ducts 180a and 180b, and the hot air from the hot air generator 181 is shown in Figs. It flows like the solid arrow of FIG. 27, and it is the structure which acts on the grain kernel of the flow path 184c by heat radiation especially in space parts 184a * 184b and 184b, and is dried. The hot air heated up by heat radiation or the like flows through the downflow passage 184c by the action of the suction fan 184h and is exhausted.

On the other hand, in place of the hot air generator 181, the refrigeration unit 182 is connected to distribute the cold air as shown by the dotted line in the figure. When charging grain grain before drying, the horizontal loading hopper 183 is opened and it is thrown in separately, At this time, cold air is introduce | transduced from the air vent and can act on the grain grain during charging. In addition, when the dried grain kernel is stored in the storage tank 184g, the air passage body 183a and the second duct pass by closing the horizontally loaded hopper 183, and are distributed to the second duct 180b. The cold air acts on the grain kernel of the dryer gas so that it can be kept cold for a predetermined temperature and does not cause deterioration of the grain quality. In addition, it is effective to form ventilation holes in the ducts 180a and 180b so as to discharge cold air or hot air into the spaces 184a, 184b and 184b.

Moreover, in the case of said rice storage, it is effective to make it the structure which closes the opening of the ventilation hole arrange | positioned at each structural part of a dryer.

Next, the structure of an alarm control system is demonstrated based on FIG.

An opening / closing sensor 192 for detecting an open / closed state is installed in an entrance door 191 of a warehouse 190 in which a grain kernel dryer 189 is installed, and the opening / closing sensor 192 is replaced with a grain kernel dryer 189. The sensor group, for example, a hot air temperature sensor, an exhaust air temperature sensor, or the like is connected in series or in parallel. The operation output of the open / close sensor 192 is input to the controller (control unit) 193 of the dryer 189, and the control unit 193 is configured to detect the opening of the door of the warehouse 190. The control unit 193 is configured to output an alarm to an alarm buzzer (not shown) attached to the monitoring unit 194 or the dryer 189. In this way, the control unit 193 of the dryer 189 can be provided with an anti-theft system of the warehouse 189, and the controller or alarm buzzer according to the detection of the special opening / closing sensor 192 is unnecessary, so that It can be configured.

Next, the moisture meter 53 is demonstrated.

To the hopper 95 of the water meter 53 in the middle part of the elevator 17, the discharge port of the hopper 95 to the feed plate (Roll, 97) formed with a spiral on the carrier plate 96 and the outer periphery It is directed to the start end side of the 1 grain feeding part 98 which is made. A pair of electrode rolls 99 and 99 are provided below the feed end of the one grain feeding unit 98. The electrical resistance value Er between the electrode rolls 99 and 99 is read out, and each measurement of a predetermined number of grains (for example, 100 grains) is performed based on a predetermined conversion formula M = f (Er). have. Then, the average value of the plurality of grains is used as the current measured value and can be used for display output or drying control (FIGS. 29 and 30).

By the way, in the grain kernel drying, the difference in water content between the surface portion and the center portion is caused by the drying treatment, and when the radiation heat radiation action is applied to the surface portion such as far-infrared drying, the water difference is remarkable. When supplied and the electrical resistance moisture measurement is performed, the moisture value is measured low. That is, when the surface portion is rapidly dried, the difference with the internal moisture is remarkable, and even when supplied to the moisture meter 53, the moisture migration is supplied without being sufficient. Grain grain temperature (TG) is taken into account when converting moisture, and following correction by grain grain temperature is common in water detection accuracy.However, in this grain grain temperature (TG), as described above, the grain grain center and surface water The difference worsens the calculation accuracy of the grain kernel temperature (TG). Since the temperature of the surface portion tends to be high with respect to the grain grain temperature by standard drying, the calculated moisture value according to the difference of detection of the grain grain temperature according to whether it is high speed drying, standard drying or low speed drying as the drying treatment. To compensate for this problem. It demonstrates based on FIG. When the moisture measurement start signal is output (step 201), the electrode roll voltage Er is detected (step 202). Here, the grain grain temperature TG is calculated based on, for example, the hot wind temperature and the exhaust wind temperature (you may use the grain grain temperature detecting means directly) (step 203). Subsequently, based on the water conversion equation M = f (Er, TG), the moisture value is calculated (step 204), but the preset drying rate mode is checked (steps 205 and 206), and in the case of the standard mode, a predetermined number of grains is determined. Display output using the average of (step 207), add + α value to the calculated moisture value (M) in the high speed mode (step 208), and correct the water value (M ') with the influence of the above-mentioned surface moisture. ) Is calculated. In addition, when the low speed mode is provided, on the contrary, the water value M " is corrected by -β (step 209).

The example shown in FIG. 32 changes the value of the said step 208 according to the drying speed in operation actually, and when the drying speed in operation is actually measured and it is more than predetermined (for example, 1.0% / hour or more), (Step 306), it is configured to perform correction processing based on a preset drying rate-moisture value correction value relation table or the like (step 307). In this way, extremely fine correction processing is possible.

Fig. 33 shows the deviation according to the unit moisture measurement, and when the deviation is equal to or larger than the predetermined value (step 404), not only the moisture display but also the deviation is displayed (step 405). The operator can conveniently select the appropriate drying treatment mode or set the stationary moisture from the relationship between both the deviation and the moisture.

According to the invention described in claim 1, the gap between the seal 69 and the feed valve 7 attached to the inner side of the seal retaining body 68 is adjusted in the perspective by the gap adjusting means, so that the feed valve of the seal 69 ( Since the degree of contact to 7) can be adjusted, the degree of contact with the feed valve 7 can be appropriately improved even if the seal 69 is worn.

The invention described in claim 2, in addition to the effect of the invention described in claim 1, one of the supporting shafts 73 provided before and after integrally integrates the interlocking arm 74 of the gap adjusting means A. In addition, the seal holding frame 68 is predetermined by integration with the supporting shaft 73a side while these are separated from the seal holding frame 68 and the other supporting shaft 73b is attached to and detached from the side wall. Can be held or removed, and the desired retention and detachment of the seal retaining frame body 68 can be fixed and detached by an extremely simple operation of attaching and detaching one of the support shafts 73a, thereby improving the maintainability.

In addition to the effects described in Claims 1 and 2, the invention described in claim 3 can remove the seal retaining frame body 68 and the seal 69 removed from the support shaft 73a from the inspection window 81, The maintainability of the feed valve 7 can be improved.

Claims (3)

The storage tank 2 of the upper part, the drying chamber 3 of the middle part, the grain storage chamber 4 which collects the grain which carried out the drying operation from the lower part, and the grain collected in the grain storage chamber 4 are reduced to the said storage tank 2. In the grain dryer comprising a circulation transfer means having an elevator 30 and conveying devices 25, 31, Cylindrical feeding valves 7 are provided in the lower portions of the lower confluence portions of the left and right grain-flowing passages 5 and 5 of the drying chamber 3 while feeding the grains of the grains. Left and right gaps 67 are formed between the left and right main surface portions of the feeding valve 7 and the lower ends of the left and right grain flow passages 5 and 5, and the left and right grain flow passages 5 and 5. A seal retaining frame 68 opposite to the left and right sides of the feed valve 7 and the shaft center of the feed valve 7 on the side wall of the machine. While being supported by the supporting shafts 73a and 73b, a seal 69 facing the feed valve 7 is attached to an inner portion of the seal retaining body 68 so that the seal 69 and the feed valve are attached. (7) The clearance adjustment means (A) which consists of a perspective adjustable so that rotation is possible and which adjusts the said support shaft 73a, 73b on the outer side of a machine frame side wall is provided. Seal device for feeding valve in grain dryer characterized in that the molars. The method of claim 1, In supporting the seal retaining frame body 68 for attaching the seal 69 to the machine frame sidewalls via the support shafts 73a and 73b, the support shafts 73a and 73b are held through the front and rear sidewall portions, respectively. The interlocking arms Arm 74 of the clearance adjusting means A are integrally attached to one of the supporting shafts 73a among the front and rear supporting shafts, and the support shafts 73a are sealed by the seal holding frame ( 68) A device for sealing a feed valve in a grain dryer, characterized in that detachment is provided freely. The method according to claim 1 or 2, In the vicinity of the shaft support part of the seal holding body 68 on the side wall of the machine frame, a check window 81 is provided which is freely open and close at a portion corresponding to the ventilation chamber 16 of the drying chamber 3, A sealing device for a feed valve in a grain dryer, characterized in that the seal retaining frame body (68) and the seal (69) removed from the (73a) are configured to be pulled out from the inspection window (81).

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