JP4172003B2 - Opening / closing device for discharge port in discharge pipe of granular material processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing device that opens and closes a discharge path in a granular material processing device (for example, a rice grain cleaning device), and in particular, does not cause clogging in the processing device even if the opening / closing device becomes inoperable. Relates to the opening and closing device.
[0002]
[Prior art]
As the granular material processing apparatus, for example, there is a rice grain cleaning apparatus as shown in FIG. 7, and the opening / closing device 30 is provided on the discharge side of the rice grain cleaning apparatus. The opening / closing device 30 has an opening / closing shutter 34 that opens and closes horizontally along the guide 33 by the movement of the air cylinder 32 in order to open and close the discharge port in the discharge path 31 of the rice grain cleaning device. Further, the discharge path wall 35 on the distal end side of the opening / closing shutter 34 is provided with a curtain 36 for preventing scattering of rice grains when the opening / closing shutter 34 is closed. In this cleaning apparatus, a predetermined amount of rice grains that have been subjected to rice washing processing (batch processing) at predetermined intervals are discharged by opening the discharge port by driving the opening / closing device 30 and provided on the discharge side 37 of the discharge path 31. It is put into a container (not shown).
[0003]
If the air cylinder 32 becomes inoperable with the air cylinder 32 closed, rice grains are accumulated in the discharge path by the opening / closing shutter 33, and clogging occurs in the cleaning device, which is a pre-process of the opening / closing device 30. If the cleaning device becomes clogged, it will take a lot of time to recover from the clogging, and the entire facility will be stopped. For this reason, conventionally, in order to avoid this, a clogging detection sensor 38 is provided in the discharge path 31 and connected to the control device 39. When the clogging is detected by the detection sensor 38, the cleaning device 40 is detected by the control device 39. Is controlled (so-called interlock function) to stop the cleaning device 40.
[0004]
[0005]
On the other hand, Japanese Patent Application Laid-Open No. 10-297695 discloses a technique in which an open / close plate is provided as an open / close device at a discharge port of a powder particle inlet side pipe (reference numeral 2 of the same publication). Similarly to the example of the rice washing apparatus, when the opening / closing plate driving means (hydraulic cylinder 19 of the publication) is inoperable and remains in the closed state, the granular material entry side pipe (Symbol 2 of the same publication) the powder is filled and clogged, and the previous process to which the powder entry pipe is connected is hindered. For this reason, in order to prevent the clogging, it is necessary to provide a sensor for detecting clogging in the granular material inlet side pipe and perform interlock control on the previous process.
[0006]
[Problems to be solved by the invention]
However, the switchgear as described above has the following additional problems. That is, it is a problem due to the failure of the sensor. Since there is a possibility that the sensor may fail, in the unlikely event that the sensor fails, since the interlock control as described above is not performed, the previous process may be affected by clogging. Become.
Therefore, in view of the above problems, the present invention makes it impossible to operate with the switchgear closed, and even if the clogging detection sensor breaks down, it is discharged without affecting the previous process. It is an object of the present invention to provide a switchgear that can be used.
[0007]
[Means for Solving the Problems]
According to claim 1 , the present invention provides
An opening / closing device (1) for the discharge port (4) in a discharge pipe (3) connected to the discharge side of the granular material processing device and provided with a discharge port (4) in the falling direction of the processed granular material ,
While configuring the discharge port (4) at a predetermined inclination angle with respect to the falling direction of the treated granular material,
The outlet (4) opening and closing plate for opening and closing the (6) and said closing plate (6) drive unit for opening and closing the (6a) from become open portion (7),
Control means for driving the drive unit (6a) to open and close at predetermined time intervals in accordance with a timing at which the processed granular material in a predetermined amount unit is discharged from the granular material processing device;
The discharge pipe wall on the inclined lower end side (3b) of the discharge port (4) is opened, and the inclined lower end of the opening / closing plate (6) is rotated by the rotating shaft (9) disposed on the upper part of the opening. The opening / closing operation of the opening / closing portion (7) is impossible and the discharge port (4) is closed and the fall / deposited on the opening / closing plate (6) is opened and closed. A rotating plate (10) that can be pushed open by the treated granular material itself;
It took the technical means of Ru with a.
[0008]
According to this, even when the opening / closing part becomes inoperable, when the opening / closing plate is closed, the predetermined inclination angle is set, so that the falling particulate matter slides down and accumulates on the inclined opening / closing plate. Further, the since the rotating plate is provided, granules deposited with sliding down over the opening and closing plate collides with the rotating plate, granulate it in rotation plate opens push past rotary plate is discharged The On the other hand, when there is little granular material sliding down (depositing) on the opening / closing plate, the rotational plate is not opened, and the granular material is not discharged. Therefore, even if the opening / closing part becomes inoperable, the particulate matter is discharged, and if the amount of the particulate matter is reduced, it is not discharged.
[0009]
According to claim 2,
Wherein the rotary plate (10), below the point where該回rotation plate (10) is in contact with the opening and closing plate tip, said center of gravity of the closing plate (6) and the contact point rotating plate on the opposite side of (10) Since the extension portion (11) for moving the position is provided, the position of the center of gravity of the rotating plate is opposite to the point in contact with the opening / closing plate, that is, the position outside the rotating plate that is suspended and rotated. The rotating plate is always urged to the front end side of the opening and closing plate and the leading end of the opening and closing plate is in contact with the rotating plate, so that even if a small amount of particulate matter falls (deposits) , granules of these never granules the amount is unless rotating plate against the force for urging the rotation plate is never separated from the tip of the opening and closing plate is discharged. As a matter of course, when a large amount of granular material that resists the force urging the rotating plate falls, the rotating plate is opened to discharge the granular material, so that the opening / closing portion is inoperable. Even so, the discharge pipe will not be clogged.
[0010]
Furthermore, according to claim 3,
The rotating plate (10) has a mass that is opened by a push-opening action by an arbitrary amount of the processed granular material dropped and deposited on the opening / closing plate (6) . None by using some of the thick material, thereby, even if a small amount of particulate matter falling (deposited), the by these granular part is against the mass of the rotating plate rotating plate times If it does not move, the rotating plate will not move away from the tip of the opening / closing plate. As a matter of course, when a large amount of granular material that rotates the rotating plate against the weight of the rotating plate falls, the rotating plate opens and discharges the granular material. Even if is inoperable, the discharge pipe will not be clogged.
[0011]
According to claim 4,
Since the opening / closing plate (6) has a horizontal portion (12) at the tip thereof, a small amount of particulate matter accumulates on the horizontal portion (12) . When a large amount of granular material that rotates the rotating plate against the weight of the rotating plate falls, the rotating plate is opened to discharge the granular material, and the granular material becomes a small amount. If the rotary plate is not rotated, the rotary plate is closed, and the remaining granular material is not deposited on the horizontal portion and the rotary plate is not rotated. In addition, even if the rotating plate is not rotated within a short period of time, if it accumulates, there is a possibility that the rotating plate will be rotated again. By providing a portion, even if the discharge of a small amount of particulate matter remaining in the second half of the remaining amount of charging continues for a long time, this particulate matter is deposited on the horizontal portion, that is, at the time of the next particulate matter discharge, can be discharged simultaneously when a large amount discharge opening and closing unit is even inoperable state, it is possible to emissions.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An example of a processing apparatus which is a pre-process of the switchgear according to the present invention will be described with reference to FIG. In this example, the granular material processing apparatus is a polished rice cleaning apparatus 20. The cleaning device 20 includes a cleaning unit 21 that hydrolyzes and applies a slight pressure while adding water, and a dehydrating unit 22 that dehydrates polished rice. In the pre-process of the cleaning device 20, a flow rate measuring device 23 for measuring the amount of milled rice to be input to the cleaning device 20, and in addition, in the pre-process of the flow rate measuring device 23, a grain refiner that sews the grain 24 is connected. On the other hand, the flow path 2 provided with the switchgear 1 according to the present invention is connected to the subsequent process of the cleaning device 20. Below the opening / closing device 1, a conveying line 25 (for example, a belt conveyor) and a rice cooker 26 and a lid 27 are alternately placed and conveyed on the conveying line 25.
[0013]
In order to put a predetermined amount (for example, about 7 kg) of polished rice into the cleaning device 20, the amount of polished rice sent from the cerealing device 24 is measured by the flow measuring device 23. When a predetermined amount is measured by the flow rate measuring device 23, the grain refiner 24 stops. In the cleaning device 20, the polished rice is passed through the cleaning unit 21 and the dehydration unit 22 and is introduced into the flow path 2. The devices are controlled so that the charging is performed, for example, at approximately one minute intervals. That is, the opening / closing device 1 is controlled to open and close at intervals of 1 minute. The conveying line 25 is also controlled so that the rice cooker 26 is positioned directly below the opening / closing device 1 in accordance with the opening / closing of the opening / closing device 1. These operation controls are collectively controlled by a control device (not shown).
[0014]
The opening / closing device 1 used in the above processing device may repeat the opening / closing operation in accordance with the timing of discharging the polished rice by the processing device. However, when the opening / closing device 1 becomes inoperable, it is conventionally opened / closed. Not only is the milled rice clogged in the flow path 2 of the apparatus 1, but also the cleaning apparatus 20 is clogged with milled rice, and the damage is increased. However, in the present invention, the switchgear is configured as follows.
[0015]
The opening / closing device 1 will be described below with reference to FIG. The flow path 2 is a discharge pipe 3, and the discharge port 4 of the discharge pipe 3 is formed so that the cross section thereof is inclined at a predetermined angle (for example, 55 degrees) with respect to the direction in which the polished rice falls. An opening / closing plate 6 that opens and closes around a rotation shaft 5 (for example, a shaft and a bearing) provided in one side portion 3a of the discharge pipe 3 so as to close the discharge port 4 along the inclination angle of the discharge port 4. And an opening / closing part 7 including a driving part (for example, an air cylinder) 6 for opening / closing the opening / closing plate 6. Further, the unloading pipe wall opposite to the opening / closing plate 6, that is, the other side 3 b of the discharge pipe 3 is opened, and is pivoted in a suspended state by a pivot shaft (for example, a hinge) 9 on the upper part of the opening 8. A plate 10 is provided.
[0016]
Further, an extension 11 is provided at the lower end of the rotating plate 10 so as to move the center of gravity of the rotating plate 10 toward the other side 3b. Specifically, as shown in FIG. 2, the cross section is formed in an upside down shape. As a result, the center of gravity of the rotating plate 10 moves to the other side 3b side, and the rotating plate 10 is always biased toward the opening / closing plate 6 side. Therefore, when the opening / closing plate 6 is closed, the rotating plate 10 and the opening / closing plate 6 are kept in contact with each other, and the discharge port 4 is closed. In addition, a horizontal portion 12 is provided at the tip of the opening / closing plate 6. The inclination angle of the discharge port should be arbitrarily changed.
[0017]
The operation of the above opening / closing device 1 will be described with reference to FIGS. The drive unit 6 is operated in accordance with the intermittent operation of the cleaning device 20, and the opening / closing plate 6 is opened and closed. That is, the polished rice is discharged from the cleaning device 20 in a state where the opening / closing plate 6 of the opening / closing part 7 is opened. At this time, the washed polished rice is discharged in the direction of the arrow (A). The opening / closing part 7 is closed after maintaining an open state for a predetermined time (for example, about 50 seconds). The rice cooker 26 is conveyed by the conveyance line 25 while the opening / closing part 7 is closed (for example, about 10 seconds). When the next rice cooker 26 is conveyed to a fixed position, the conveyance line 25 is stopped and the opening / closing part 7 is opened. At this time, the next about 7 kg of grain is started to be fed into the cerealing device 24, and then passes through the cleaning device 20 in about 40 seconds. The polished rice that has passed through the cleaning device passes through the opening / closing device 1 and is put into the rice cooker 26.
[0018]
At this time, if the operation of the opening / closing part 7 is not possible, the present invention operates as follows, particularly when it remains stopped in the closed state. When the polished rice is discharged from the cleaning device 20, the polished rice slides down on the inclined opening / closing plate 6, pushes the rotating plate 10 and is discharged in the direction of the arrow (b). Therefore, even if the opening / closing plate 6 is closed, the polished rice is discharged, so that the processing device in the previous process is not clogged and the damage is not expanded. At this time, in this embodiment, it is preferable that the stop position of the rice cooker 26 is a position where the polished rice is accepted even if the polished rice is discharged in the direction of the arrow (A) or the direction of the arrow (B). Therefore, even if the opening / closing portion 7 is closed and becomes inoperable, the damage does not increase such that the front and rear devices become inoperable.
[0019]
In addition, when it becomes impossible to operate in a state where the opening / closing part 7 is open, the breakage of the polished rice intermittently discharged from the processing device 20 (around the end of discharge) is the lid 27 of the rice cooker 26 or the conveyance. Although it is not preferable because the milled rice falls on the line 25, most of the milled rice can be put into the rice cooker 26 in the rice cooker 26, and the transport path 3 is not clogged with milled rice. It will not spread to damage that would cause the device to become inoperable. However, this state is not a normal state, and is merely an example of a workaround in an abnormal situation based on the assumption that the opening / closing unit 7 is in an open state and becomes inoperable.
[0020]
In this case, the opening / closing part 7 is considered unnecessary, but the necessity of the opening / closing part 7 is due to the following reason. When the opening / closing part 7 is operating normally, most of the polished rice discharged from the cleaning device 20 is discharged when the opening / closing part 7 is closed. A part of (a few gram to a dozen gram) may be discharged from the cleaning device 20 even after the opening / closing part 7 is closed. This can be seen in the final stage of cleaning by the cleaning device 20. If the opening / closing part 7 is not present, this small amount of polished rice not only accumulates on the lid 27 or the conveying line 25 of the rice cooker 26 and becomes unsanitary, but the polished rice that accumulates on the lid 27 When cooking rice, it becomes dry rice, discolors and adheres to the lid 27, which makes it look dirty, and is not suitable as a device for handling food. Therefore, the opening / closing part 7 needs to keep the discharge port 4 closed during the movement time of the rice cooker 26.
[0021]
The opening / closing part 7 of the present invention is provided with a rotating plate 10, but the rotating plate 10 and the opening / closing plate 6 are in close contact with each other because of the position of the center of gravity of the rotating plate 10, Even if the white rice falls, the rotating plate 10 is not pushed open by this. In other words, the shape of the rotating plate 10 is devised so that the rotating plate 10 contacts the tip of the opening / closing plate 6 so as not to be pushed open by a small amount of polished rice. In the case of this example, the extension part 11 is provided, and the center of gravity is moved to the other side 3b with the cross-sectional shape being reversed.
[0022]
Further, since the horizontal portion 12 is provided at the tip of the opening / closing plate 6, it is possible to deposit polished rice that slides down the inclined opening / closing plate 6 on the horizontal portion 12. Therefore, the force for pushing open the rotating plate 10 is reduced, and the rotating plate 10 may be in contact with the tip of the opening / closing plate 6 to such an extent that the polished rice accumulated on the horizontal portion 12 does not collapse.
[0023]
As described above, when the switchgear according to the present invention operates normally, the polished rice that leaks when intermittently discharged from the processing device is stopped, and the container and the conveying line for introducing the polished rice become unsanitary. Therefore, even when the switchgear becomes inoperable, the milled rice is not stopped by the switchgear, and the damage to the processing apparatus in the previous process is not spread.
[0024]
Another embodiment of the rotating plate 10 of the closing part 7 shown in FIGS. The rotating plate 10 shown in FIG. 4 includes an appropriate weight on the other side of the tip. With this weight, the rotating plate 10 is kept in close contact with the tip of the opening / closing plate 6 against the action of a small amount of polished rice pushing the rotating plate 10 open. When a large amount of polished rice is discharged, it is necessary to set the weight so that the polished rice can easily push open the rotating plate 10. Further, the rotating plate 10 shown in FIG. 5 shows an example in which the plate thickness is increased to increase its mass. With this plate thickness (mass), the rotating plate 10 maintains a close contact with the tip of the opening / closing plate 6 against the action of a small amount of polished rice pushing the rotating plate 10 open. When a large amount of polished rice is discharged, it is necessary to set the mass so that the polished rice can easily push open the rotating plate 10. At this time, if the opening / closing part 7 stops at a position where the opening / closing plate 6 slightly pushes the rotating plate 10, the rotating plate 10 and the opening / closing plate 6 are more closely connected.
[0025]
Although the example which rotates the opening-and-closing plate 6 with the rotating shaft 5 was shown above, it is good also as the opening-and-closing plate 16 which slides along an inclined surface with the guide 15 in FIG. At this time, it is free to provide a horizontal portion at the front end of the opening / closing plate or to use a rotating plate as another embodiment.
[0026]
【The invention's effect】
As described above, according to the switchgear according to the present invention, even if the switchgear becomes inoperable while closed, it prevents clogging in the discharge pipe, etc., and discharges particulate matter without adversely affecting the previous process. can do. Moreover, since the switchgear according to the present invention does not require an electrical sensor, it is a workaround that can be constructed at a minimum cost.
[0027]
Furthermore, according to the switchgear according to the present invention, the rotating plate of the present invention can be pushed open with a small amount of particulate matter even when a small amount of particulate matter remains discharged for a long time after the introduction from the previous step. Therefore, these residual granular materials are not dropped from the switchgear. For this reason, it fulfills the original role of the switchgear.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a processing apparatus using the present invention.
FIG. 2 is a side view showing an example of the switchgear according to the present invention.
FIG. 3 is a time chart showing the operation of the processing device and the switchgear.
FIG. 4 is a view showing another embodiment of a rotating plate which is a part of the opening / closing device.
FIG. 5 is a view showing another embodiment of a rotating plate which is a part of the opening / closing device.
FIG. 6 is a view showing another embodiment of an opening / closing plate which is a component of the opening / closing device.
FIG. 7 is a side view showing a conventional opening / closing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Opening / closing device 2 Flow path 3 Discharge pipe 4 Discharge port 5 Rotating shaft 6 Opening / closing plate 6a Drive part (air cylinder)
7 Opening / closing part 8 Opening 9 Rotating shaft (hinge)
DESCRIPTION OF SYMBOLS 10 Rotating plate 11 Extension part 12 Horizontal part 13 Weight 15 Guide 16 Opening / closing plate 20 Cleaning device (granular material processing device)
21 Washing unit 22 Dehydrating unit 23 Flow rate measuring device 24 Graining device 25 Transport line 25
26 Rice Cooker 27 Lid 30 Opening / Closing Device 31 Discharge Path 32 Air Cylinder 33 Guide 34 Opening / Closing Shutter 35 Discharge Path Wall 36 Curtain 37 Discharge Side 38 Detection Sensor 39 Control Device 40 Cleaning Device

Claims (4)

An opening / closing device (1) for the discharge port (4) in a discharge pipe (3) connected to the discharge side of the granular material processing device and provided with a discharge port (4) in the falling direction of the processed granular material ,
While configuring the discharge port (4) at a predetermined inclination angle with respect to the falling direction of the treated granular material,
The outlet (4) opening and closing plate for opening and closing the (6) and said closing plate (6) drive unit for opening and closing the (6a) from become open portion (7),
Control means for driving the drive unit (6a) to open and close at predetermined time intervals in accordance with a timing at which the processed granular material in a predetermined amount unit is discharged from the granular material processing device;
The discharge pipe wall on the inclined lower end side (3b) of the discharge port (4) is opened, and the inclined lower end of the opening / closing plate (6) is rotated by the rotating shaft (9) disposed on the upper part of the opening. The opening / closing operation of the opening / closing portion (7) is impossible and the discharge port (4) is closed and the fall / deposited on the opening / closing plate (6) is opened and closed. A rotating plate (10) that can be pushed open by the treated granular material itself;
Switchgear outlet at the discharge pipe of the particle processing apparatus comprising the. Wherein the rotary plate (10), below the point where該回rotation plate (10) is in contact with the opening and closing plate tip, said center of gravity of the closing plate (6) and the contact point rotating plate on the opposite side of (10) The opening / closing device of the discharge port in the discharge pipe of the granular material processing device according to claim 1, further comprising an extension (11) for moving the position. The said rotation board (10) is provided with the mass which will be in an open state by the pushing-opening effect | action by the arbitrary amount of the said processed granular material dropped and deposited on the said opening-and-closing board (6), The opening / closing apparatus of the discharge port in the discharge pipe of the granular material processing apparatus of claim | item 1. The opening / closing device of the discharge port in the discharge pipe of the granular material processing device according to claim 1, wherein a horizontal portion (12) is provided at a tip of the opening / closing plate (6) .

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