JPS6011435Y2 - Paddy circulation discharge control device in paddy dryer - Google Patents

Description

[Detailed description of the invention] The present invention is a paddy circulation/discharge control device that can easily and always perform error-free paddy loading/circulating and discharging operations in a paddy dryer that circulates and dries the paddy with ventilation. Regarding.

Conventionally, a ventilation drying section was provided between the upper paddy tempering tank and the lower paddy unloading chamber, and an elevator connected the lower unhulling chamber and the upper paddy unloading chamber, allowing ventilation while circulating the paddy. In a paddy dryer for drying, an opening/closing shutter is provided in the paddy discharge gutter which is branched from the paddy circulation path at the top of the elevator, and the opening/closing operation edges of the opening/closing shutter are made to hang downward, and this operation string is alternately operated. By pulling the shutter, the shutter could be opened and closed, and when it was closed, the string could be placed in a circulating state, and when it was opened, the paddy could be discharged.

Therefore, the cord that closes the opening/closing shutter is usually labeled with a "circulation" label, and the cord that opens the shutter is labeled with a "discharge" label.

By the way, in the above-mentioned conventional string dryer, when discharging the strings from the dryer, pull the string on the "discharge" side, and after discharging the paddy, pull the string on the "circulation" side to close the opening/closing shutter. This operation is often forgotten, resulting in the inconvenience that the paddy that is to be loaded into the dryer is inadvertently discharged from the paddy discharge gutter.

In addition, since the elevator is installed at the rear of the dryer, the operation cord for the opening/closing shutter is suspended from the rear of the machine, and when discharging paddy, the operator must go around to the rear of the machine and tie the cord. The reality was that it was an inconvenience to have to operate the system.

In view of the above, the present invention has been developed by installing a paddy circulation/discharge switching lever on the control panel located at the front of the dryer body, and an electric type that opens and closes in conjunction with the paddy circulation/discharge switching lever on the paddy discharging gutter of the elevator. By providing an opening/closing shutter and a shutter opening/closing control circuit that closes the opening/closing shutter in conjunction with the stop of the elevator, the paddy tensioning circulation and paddy discharge can be carried out conveniently at the front of the dryer body. In addition, the shutter of the paddy discharge gutter can be opened and closed simply by operating the paddy circulation/discharge switching lever, making this operation easy. To provide a paddy circulation discharge control device in a paddy dryer that can close an opening/closing shutter automatically and reliably prevent unintentional scattering of paddy that is to be loaded next due to forgetting to close the opening/closing shutter. DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings.

In Figures 1 and 2, 1 is the upper paddy tempering tank, 2
is the paddy extracting chamber at the bottom, and a paddy flow downward ventilation drying section 3 is provided between the paddy tempering tank 1 and the paddy extracting chamber 2, and an elevator is installed between the paddy extracting chamber 2 and the paddy tempering tank 1. It is communicated by 4.

Reference numeral 5 denotes a hot air generator, and the hot air generator 5 is attached to the front end surface of the grain drying section 3.

Reference numerals 6 and 7 are control panels provided at the front of the dryer main body, and the control panel 7 is provided with a paddy circulation/discharge switching lever 8.

This paddy circulation/discharge switching lever 8 is in the state of paddy circulation at the A position.
It can be switched to a paddy discharge state at the B position and a stopped state at the C position.

A paddy discharge gutter 9 branched from the paddy circulation path is connected to the upper part of the elevator 4, and an opening/closing shutter 10 is provided at the upper end of the paddy discharge gutter 9.

As shown in FIG. 3, this opening/closing shutter 10 is pivoted at one end by a pivot shaft 11, and can freely rotate up and down about the pivot shaft 11. When the paddy discharge gutter 9 is placed in a horizontal state, the base opening of the paddy discharge gutter 9 is closed, and when it is rotated downward, the opening is opened.

Reference numeral 12 denotes a control box for the opening/closing shutter, and a shutter opening/closing motor 13 is installed within the control box 12 .

The shutter opening/closing motor 13 and the opening/closing shutter 10 are connected to a crank arm 14 attached to the rotating shaft of the shutter opening/closing motor 13 and an operating arm 1 of the opening/closing shutter 10.
5 are linked by an interlocking rod 16, and the opening/closing shutter 10 is opened or closed by rotation of the shutter opening/closing motor 13 in one direction.

17 is a cam fixed to the rotating shaft of the shutter opening/closing motor 13; 18 is a limit switch on the paddy circulation side; and 19 is a limit switch on the paddy discharge side.
．． Each of the operating pieces 19 slides on the outer peripheral surface of the cam 17, and a limit switch 18.1 is inserted into the operating recess 2o of the cam 17.
These limit switches 18, 19 are opened when the actuating piece 9 is depressed.

Therefore, the installation positions of the limit switches 18 on the rice circulation side are set so that they are turned off when the opening/closing shutter 10 is closed, and the limit switches 19 on the rice discharging side are turned off when the opening/closing shutter 10 is open. There is.

An example of a control circuit 21 for each part of the dryer housed in the control panels 6 and 7 is shown within the chain line frame in FIG.

In FIG. 4, Ml is the blower motor of the hot air generator 5, M2 is the paddy circulation motor, and MC1 is the electromagnetic contactor. 'Connected to power supply via.

13 are elevator motors of the elevator 4, MC2 is an electromagnetic contactor, and the elevator motor M3 is connected to a power source via a switching contact MC2' of the electromagnetic contactor MC2.

Further, PBl is a stop switch, PB2 is a start switch, TLR is a timer for setting drying time (0 to 1 hour), and the magnetic contactor MCI is a contact TLR' of the timer TLR.
, a stop switch PBl, and a starting switch PB2 are connected to a power source in series, and a contact MC1'' of a magnetic contactor MCI is connected in parallel to the starting switch PB2.

TDRl is a timer for controlling the elevator motor M3,
The timer TDRl is a delay operation timer whose contacts close at the same time as energization is applied, and whose contacts open several seconds (7 seconds) after the energization is cut off.

This timer TDR1 is connected to the same point as the electromagnetic contactor MCI.

The electromagnetic contactor MC2 is the switching contact TDRl of the timer TDRi.
'Connected to power supply via.

Xl is a combustion memory relay, sp is an electromagnetic pump for the fuel supply system, H is an ignition heater, PB3 is a combustion switch, PB4 is a fire extinguishing switch, combustion memory relay X1, electromagnetic pump 1
311 ignition heater H is connected to the magnetic contactor MCI through a fire extinguishing switch PB4 and a combustion switch PB3 in series.
The contact XI' of the combustion memory relay X1 is connected in parallel to the combustion switch PB3.

Xl is a discharge memory relay, LSI is a discharge command switch activated by switching the circulating discharge switching lever 8 to discharge position B, and discharge memory relay
It is connected to a power source through the contact MC2'' of C2, the discharge command switch LSI, and the contact X1" of the combustion memory relay X1 in series, and the discharge memory relay X2' is connected in parallel to the discharge command switch LSI.

Also, M4 is the shutter opening/closing motor shown in 13 above, LS
2 is the limit switch on the rice discharge side, also shown as 19, L
S3 is the limit switch on the rice circulation side, also shown as 18.
Bz is an alarm buzzer, TDR2 is a delay action relay whose contacts operate when energized for 6 seconds, and the shutter opening/closing motor M4 is connected to one of the switching contacts X2'' of the discharge memory relay X2 and the discharge Through the series circuit of the limit switch Ls2 on the side, the series circuit of the limit switch 3 on the circulation side, and the switching contact TD of the timer TDR2.
It is connected to the power supply via one side of R2'.

The alarm buzzer Bz is the above switching contact TDR of timer TDR2.
2' is connected to the power supply through the other side of the timer TD.
R2 is connected between the connection point of the discharge side limit switch LS2, the circulation side limit switch LS3, and the shutter opening/closing motor M4, and the power supply on the opposite side.

Next, the operation of the present invention will be explained.

Now, when drying paddy in the dryer, first, only the elevator 4 is operated to load a predetermined amount of paddy into the paddy tempering tank 1.

When the paddy has been loaded into the paddy tempering tank 1, the dryer is started according to the following sequence of operations, and the paddy is circulated and dried.

First, switch the circulation discharge switching lever 8 to the circulation position A in the controllers 6 and 7, and set the drying time by operating the drying time setting timer TLR.
R' closes.

Then, if you press the start switch PB2, the magnetic contactor MCI
is energized, its contact MCi'' closes, and the electromagnetic contactor MC
1 is self-held, and the contact MCI' of the electromagnetic contactor MCI is also closed to start the blower motor M1 and circulation motor M2.Furthermore, the contact TDRi' is closed by the excitation of the timer TDR1, so that the elevator motor M3 is started at the same time, and the dryer is placed in a paddy circulation state and an air blowing state.

Next, when combustion switch PB3 is pressed, combustion memory relay
1 is energized, and the circuit is kept running by closing its contact X1', and at the same time, the electromagnetic pump SP is operated and the igniter H is heated red-hot, so that combustion is started in the hot air generator 5. Hot air is blown to the draft drying section 3 under the rice grain flow.

Therefore, the circulating paddy is dried through ventilation for the time set in the timer TLR.

Note that even if the circulation discharge switching lever 8 is mistakenly switched to the discharge side B in this dry state, the contact X1" of the combustion memory relay
Since it is open, the discharge memory relay x2 does not operate, and the careless discharge and scattering of paddy is prevented.

When the drying time set in the drying time setting timer TLR has elapsed, the contact TLR' opens and the magnetic contactor MCI is de-energized, so the contact MC1' opens and the blower motor M1 and circulation motor M2 stop. .

Also, when contact XLR' of timer TLR opens, timer TDR
The timer TDRl opens its contact TDRl' after several seconds (7 seconds) have elapsed, so the magnetic contactor MC2 is de-energized and its contact MC2' opens the timer TDRl'.
The elevator motor M opens with a delay of the delay operation time of DRl.
3 stops.

Therefore, the elevator 4 continues to operate for several seconds even after the paddy circulation operation ends, and then stops, and all of the rice remaining in the elevator 4 is returned to the rice tempering tank 1 during that time.

Note that by pressing the stop button PB1, the dryer can be stopped by the same action as described above at any time during the time set by the timer TLR.

When the paddy is discharged from the dryer after drying is completed or as necessary, set the drying time setting timer TLR to the required time for discharging the paddy, press the start switch PB2, and the blower motor will start as in the case of drying. M1, circulation motor M2, and elevator motor M3 are started, and the paddy inside the dryer is placed in a circulating state.

Therefore, if the paddy circulation discharge switching lever 8 is switched to the discharge side B, the discharge command switch LSI is closed and the discharge memory relay X2
is excited, its switching contact X2'' is switched, a circuit of the discharge side limit switch LS2 is established, and the shutter opening/closing motor M4 rotates in the direction of opening the opening/closing shutter 10.
When the opening/closing shutter 10 is completely opened, the discharge side limit switch LS2 opens and stops.

Therefore, the paddy discharge gutter 9 is opened, and the paddy transported by the elevator 4 is sequentially discharged from the paddy discharge gutter 9.

Since the time required for discharging paddy is set in the timer TLP, the operation will automatically stop shortly after the entire amount of paddy is discharged from the dryer, but if you confirm that the discharging of paddy has finished during that time, For example, the operation can be stopped immediately by pressing the stop switch PBl.

In this way, the time set in the timer TLR has passed,
Alternatively, when the stop switch PBl is pressed, the magnetic contactor MCI is demagnetized and the power to the timer TDRl is cut off, so the elevator 4 finishes its operation with a delay of only a few seconds, and the paddy is completely discharged. be done.

In addition, due to the demagnetization of the magnetic contactor MCI, the discharge memory relay
The contact MC2" in the circuit No. 2 opens and the excitation of the relay X2 is released, so the switching contact X2" switches to the circulation side limit switch LS3, and the shutter opening/closing motor M4 rotates the opening/closing shutter 10 in the closing direction. .

Therefore, after the paddy is discharged, the opening/closing shutter 10 of the paddy discharge gutter 9 is automatically closed, and it is possible to reliably prevent the unintentional scattering of the paddy to be loaded next.

Note that during the opening/closing operation of the opening/closing shutter 10, the operation may stop due to grains or other inclusions, or the shutter opening/closing motor M4 may be energized for more than the delay time of timer TDR2 of 40 seconds due to malfunction. When the timer TDR2 is activated, the switching contact TDR2' is switched, the alarm buzzer Bz sounds, and the power to the shutter opening/closing motor M4 is cut off.

Therefore, abnormal conditions such as those described above can be immediately known and appropriate measures can be taken.

In short, the present invention provides a paddy flow lower ventilation drying section 3 between the upper paddy tempering tank 1 and the lower paddy removing chamber 2, and an elevator 4 between the lower paddy removing chamber 3 and the upper paddy tempering tank 1. In a paddy dryer that circulates and dries paddy through ventilation, a control panel 7 located at the front of the dryer body is equipped with a paddy circulation/discharge switching lever 8, which branches off from the paddy circulation path at the top of the elevator 4. The paddy discharge gutter 9 is provided with an energized opening/closing shutter 10 that is opened and closed in conjunction with the paddy circulation discharge switching lever 8.
Since a shutter opening/closing control circuit is provided which closes the opening/closing shutter 10 in conjunction with the stop of the elevator 4, the loading and unloading of paddy and the discharging of the paddy are conveniently performed at the front of the dryer main body, and the paddy is simply circulated and discharged. The opening/closing shutter 10 of the paddy discharge gutter 9 can be opened and closed simply by operating the switching lever 8, and perhaps because this operation can be performed easily, it is automatically opened and closed when the elevator 4 stops after discharging the paddy. shutter 10
This has the effect of reliably preventing unintentional scattering of the paddy that is to be placed next due to forgetting to close the opening/closing shutter 10.

[Brief explanation of drawings]

The drawings show one embodiment of the device of the present invention, and the first
The figure is an overall side view of the dryer, and Figure 2 is a partial perspective view.
FIG. 3 is an enlarged side view with a part of the main part cut away and a part cut away vertically, and FIG. 4 is a circuit diagram of the control section. 1...Paddy tempering tank, 2...Paddy removal room, 3
...Paddy flow lower ventilation drying section, 4 ...Elevator, 7 ...Control panel, 8 ...Paddy circulation discharge switching lever 9 ...... Paddy discharge gutter, 10...
Opening/closing shutter, 21... Control circuit, A...
... Circulation position, B... Discharge position.

Claims (1)

[Scope of utility model registration request] A ventilation drying section under the paddy flow is provided between the upper paddy tempering tank and the lower paddy removal chamber, and an elevator connects the lower paddy removal chamber and the upper paddy tempering tank to allow ventilation drying while circulating and flowing the paddy. In a paddy dryer, a paddy circulation/discharge switching lever is installed on the control panel located at the front of the dryer body, and the paddy circulation/discharge switching lever is linked to the paddy discharging gutter which is branched from the paddy circulation path at the top of the elevator. A paddy circulation discharge control device for a paddy dryer, characterized in that an electric opening/closing shutter that is opened and closed is provided, and a shutter opening/closing control circuit that closes the opening/closing shutter in conjunction with the stoppage of the elevator.