JPS58148130A - Automatic stop device for rotary valve of circulation type cereal drier - Google Patents

Abstract

PURPOSE:To prevent the damage of the rotary valve by driving the rotary valve by a reduction gear constituted by a decelerating bevel gear and an inclined bevel gear and a tension device and releasing the tension of the tension device when the rotary velve is abnormal. CONSTITUTION:The drive of a motor is transmitted to the inclined bevel gear 17 and the decelerating bevel gear through a prime pulley sheave 31, a V belt 32 and a receiving pulley sheave 12, is decelerated by the difference of the number of teeth of both bevel gears, and turns the rotary valve 4 through a sprocket not shown and a chanin 15. In this case, the belt 32 receives tension by a support arm 30 and a tension pulley 9, and power is transmitted. When the rotary valve 4 is difficult to be turned, the chain 15 is difficult to be moved, the inclined bevel gear 17 is rotated in the counterclockwise direction, a support section 24 and spring 28 are turned in the clockwise direction through a wire 19, the tension pulley 9 is separated from the belt 32, and the transmission of power is stopped. Accordingly, the damage of the rotary valve is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic stop device for a rotary valve in a circulating grain drying device.

The grain drying equipment is designed so that when the rotary valve stops rotating and the grain stops flowing, a paddy sensor installed in the grain flow path detects this and automatically stops the motor, etc. However, even if an abnormality occurs and the rotary valve is heavily loaded and rotates heavily, it will continue to discharge grain as long as it continues to rotate, so the paddy sensor described above cannot automatically stop the dryer. do not have. Therefore, there have been accidents where the rotary valve has been damaged.

Therefore, the present invention uses a specially constructed speed reducer to reduce the rotation speed of the rotary valve, and also has a power transmission mechanism that immediately stops the motor when the rotary valve becomes clogged and becomes abnormally heavy. The provided clutch can be disconnected.

The present invention has the following features: (1) A chain is connected to and rotates a sprocket attached to the shaft of a rotary valve mounted on the lower end of the down-flow drying chamber, and a reduction sprocket loosely fitted to the reduction shaft. (2) Reduction sprocket The reduction bevel gear is integrally formed.

(3) An inclined bevel gear with a different number of teeth is meshed with the reduction bevel gear only partially.

(4) Fix the receiving wheel to the shaft on which the inclined bevel gear is loosely fitted.

(5) Loosely hook the belt around the receiver wheel and the paired master wheel.

(Ql) A part of the inclined bevel gear is attached to a fixed part via a spring, and the spring is provided with a support part that moves as the spring expands.

(7) Apply tension pulley 4 to the belt.

(8) The tension pulley is fitted with a spring;
The tension pulley is fixed to the supporting part at the other end of the spring, and when the supporting part moves, the tension pulley stops acting on the belt.

k Abstract.

To explain with a diagram, fll is a humidity control tank installed at the upper position, and a funnel part (2) (2) is installed at the bottom of the tank [+1].
The upper ends of the down-flow drying chambers +31 +31 are connected to the lower ends of the funnel parts +21 +21. The drying room (31
At the bottom of each +31, there is a rotary valve +41 +41 with a shaft +51
+51 for mounting. Sprockets +61 +61 Y are fixed to the protruding ends of the shafts (51 + 51, respectively. (7) is a deceleration shaft installed at an appropriate position in the f direction from the sprockets (6) (6). ) is attached via bearings +91 to +91 within the shaft cylinder attached to the outer wall (8) as shown in Figure 2.The shaft (7
) is formed with an inclined axis aυ in a portion projecting outward from the shaft cylinder a1, and a receiver wheel α2 is fixed to the outer end of the inclined axis on. There is a reduction sprocket a3 on the outer periphery of the shaft
The boss portion a4 having the shape is loosely fitted. Reduction sprocket 0
A Cheno aS is hooked and rotated between the sprocket +61 and the sprocket +61 fixed to the shaft (5) of the rotary valve (4). A reduction bevel gear aυ is integrally provided at one end of the boss portion a4. A tilted bevel gear α force is loosely fitted to the tilted shaft OD,
A reduction bevel gear αG and an inclined bevel gear αn are meshed only partially. The bevel gear aS and the bevel gear a
The number of teeth differs from D by 1 to 2 places. The gear an rotates by reducing the speed of the gear a8y by the difference in the number of teeth,
Therefore, attach a wire or rod α9 to the protrusion (II) protruding from a part of the bevel gear an to be rotated, connect the coil spring (■) to the other end of the rond (a), and fix the other end of the coil spring (4). When the bevel gear an is rotated by the rotating shaft (7) and the receiver wheel 02, it performs a miso-slapping motion in relation to the inclined axis aυ.
At this time, a presser roll @ that presses the meshing between the bevel gear αS and the bevel gear a7) so that they do not become disengaged is pivotally attached to a support arm (c) protruding from the rotating shaft (7). The bevel gear 1171 rotates counterclockwise in FIG. 4 when it receives a reaction force. At this time, the coil spring (A) stretches against the elasticity, so the support part c1 moves with the extension.
Provided so as to cover the top surface of the 41 coil spring (A). As shown in FIGS. 3, 5, and 7, the support portion C141 is attached to the lower end of a rotating arm (G) whose upper end is pivoted (C), One end of another coil spring (support) is attached to 5), and the other end of the coil spring (2) is connected to the support arm (to) of the tension pulley (c). 01) is the original pulley, and between it and the receiver pulley (13), the ■belt 03 is hung and rotated, and the tension pulley (■) acts to tension the ■belt.

Next, I will explain the effect.

As is well known, when grains are fed into a humidity control tank full using a packet elevator (not shown), the grains flow into the funnel!
+2) into the down-flow drying chamber (3) and accumulates from above the rotary valve (4), filling not only the drying chamber (3) but also the funnel (2) and tank (11). When this state is reached, stop the tensioning and ignite the burner to supply hot air to the grains in the drying chamber (3), which will dry the grains.Next, the motor is energized and the original pulley 01) is turned on. When rotated, the belt 02, which is a belt clutch, rotates the receiver wheel 03, thereby rotating the deceleration shaft (7) to which the receiver wheel a'a is fixed. When the reduction shaft (7) rotates in this way, the inclined shaft 0υ in the middle thereof also rotates, and the inclined bevel gear an rotates like a miso-gripping motion, and a part of it sequentially moves and comes into contact with the reduction bevel gear αυ. . In this case, the inclined bevel gear [1? + and the reduction bevel gear aO have one or two fewer teeth, so when the receiving wheel O2 rotates once, the bevel gear α
e is rotated by 1 to 2 teeth and decelerated. Therefore, the reduction sprocket a3 rotates slowly via the boss part α,
Slowly rotate sprocket +61 +61 via Cheno a9 to rotate rotating shaft f51 +51 to which sprocket f61 +61 is fixed, and rotate the shaft +51
Rotary valve +41 fixed at +51 Rotate +41. When the rotary valve +41 +41 rotates (3), the grains in the down-flow drying chamber (3) fall little by little, and the grains are received by a receiving gutter (not shown), and then the screw It is conveyed horizontally by a conveyor, circulated by a packet elevator, and then piled up and reduced in a humidity control tank (1). However, when the straw etc. in the grains in the drying chamber +31 become entangled with the rotary valve (4), the sprocket (
The Cheno a9 that rotates 61+61 becomes heavy, so the bell gear αη tries to rotate strongly against the inclination,
Rotate counterclockwise in Figure 4. Therefore, wire 09
The coil spring (A) is stretched from the state shown in Fig. 4 to the state shown in Fig. 7 through the coil spring ω. The lower end (
Since the arm (c) is rotated, the rotating arm (3) becomes vertical as shown in Fig. 7. When the rotating arm (2) becomes vertical, another coil spring (3) fixed to its lower end (3) is stretched and reaches its dead center. The coil spring in FIG. 7 is exactly at its dead center. When the Beherukya A7+ further rotates counterclockwise from this state, the coil spring (G) contracts as shown in Figure 8, and the rotating arm (E) rotates greatly to the left, moving the tension pulley (to) to V. Belt CQ
As mentioned above, the present invention, which does not need to be operated at a further distance, has the following features: 6) and
Engage the reduction sprocket a3 that is loosely fitted on the reduction shaft (7) with the chenno acj and turn it.

(2) The reduction sprocket 03 has a bell gear a for reduction.
S is integrally formed.

(3) The reduction bevel gear ae is meshed with an inclined bevel gear fill having a different number of teeth through only a portion thereof.

(4) The receiving wheel O is attached to the shaft αl on which two inclined bevel gears are loosely fitted.
Fix 2.

(5) Loosely hook the belt (to) on the receiver wheel (original type 31 that is paired with 13) and turn it.

(6) A part of the inclined bevel gear aη is attached to the fixed part Cl1l+ via a spring (support), and the spring (4) is provided with a support part r241 that moves with the extension of the spring (2).

(7) Activate the tension pulley of the belt C13K.

(81 A spring is attached to the tension pulley ■, and the other end of the spring □□□ is fixed to the support part example. When the support part 241 moves, the tension pulley stops acting on the belt 02K.

The key point is to combine the following requirements, so not only can humidity-controlled drying be performed with a significantly reduced speed with an extremely simple device, but the clutch can be automatically disengaged as soon as the rotary valve (4) becomes clogged or heavy. Since the rotation of the rotary valve (4) is automatically stopped, there is an effect that the rotary valve (4) is not damaged.

[Brief explanation of drawings]

Fig. 1 is an overall front view, Fig. 2 is a longitudinal cross-sectional side view of the deceleration mechanism, Fig. 3 is a perspective view of the main parts of the present invention, Fig. 4 is a front view of the same, and Fig. 5 is the same as the support part. A front view of the movable arm, Figure 6 is a diagram of the same rotating state, Figures 7 and 8 are diagrams of the working state, and Figure 9 is a diagram of the 4th
FIG. Explanation of symbols (1)・Humidity control tank, (2)・-funnel, (3)
Downstream drying chamber, (4)...Rotary valve, (51 shafts,
[6... sprocket, (sword reduction shaft, (8)... outer wall, (9) bearing,
OI・・axis cylinder, OD・inclined axis, +13
...Receiver wheel, α3..., reduction sprocket, α4...
・Boss part, α9...-cheno, ae...reduction bevel gear, an...inclined bevel gear, protrusion, ■...rondo, ■ coil spring, Qυ...fixed part,
The presser roll, the support arm, the upper support part,
(C)・Axle mounting, (To)・Rotating arm, (C)
−・Lower end, ■・Coil spring, ω・Tension pulley, (to)・−Support arm, CIl+・−
Original type, 03 V belt. Patent Applicant: Iseki Agricultural Machinery Co., Ltd.tAi++11') Joharu (no change in d) Figure 1 Figure 9 Procedural Amendment (Misaki) May 8, 1981 1. Indication of Case 1. 1988 Patent Application No. 31445 No. 5, Date of amendment order

Claims (1)

[Claims] An automatic stop device for a rotary valve in a circulating grain drying device, which has the following requirements. (1) Rotate by hooking a chain to the sprocket attached to the shaft of the rotary valve mounted on the lower end of the downflow drying chamber and the reduction sprocket loosely fitted to the reduction shaft. (2) A reduction bevel gear is integrally formed on the reduction sprocket. (3) An inclined bevel gear with a different number of teeth is meshed with the reduction bevel gear only in part. (4) Fix the receiving wheel to the shaft on which the inclined bevel gear is loosely fitted. (5) Loosely hook the belt around the receiver wheel and the paired master wheel. (6) A part of the inclined bevel gear is attached to a fixed part via a spring, and the spring is provided with a support part that moves as the spring expands. (7) Applying a tension pulley to the belt. (8) Attach a spring to the tension pulley,
The other end of the spring is fixed to the support part, and when the support part moves, the tension pulley no longer acts on the belt.