JPS5820580Y2 - Automatic stop device for conveyor in powder and granular material processing facilities - Google Patents

Description

[Detailed Description of the Invention] The present invention is applicable to a powder processing facility that dries grain, etc., when conveying objects such as powder to multiple processing devices using a conveyor. This invention relates to an automatic entrainment device that automatically stops a conveyor when the processing device becomes full.

In this type of powder and granule processing facility, multiple processing devices (for example, circulation dryers) are installed below a distributing conveyor suspended horizontally at a high place. Remote control is required to feed objects such as those to be transported by a transport machine.

Therefore, it is necessary to provide a means to automatically detect whether the supply is complete or not and drive or take out the conveyor, but for this purpose, if a full quantity detection sensor is installed in each of the plurality of processing devices, This increases costs and also requires a device to constantly monitor whether each sensor is operating normally.

In order to eliminate these drawbacks, the present invention has been developed to improve transportation in powder and granular material processing facilities by devising and simplifying the system so that the presence or absence of fullness of multiple processing devices can be detected at the minimum of one location. The purpose is to provide an automatic ejecting device for the machine.

For this purpose, the present invention provides an overflow pipe at the end of the conveyor, and a full capacity detection mechanism is installed only at one location at the bottom of this overflow pipe near the ground, so that all of the multiple processing devices are fully filled. The present invention is characterized in that when the transported object overflows from the overflow pipe, the full amount sensing mechanism is operated to automatically move the transporting machine out.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

First, an example of a powder and granular material processing facility to which the present invention is applied will be explained with reference to FIGS. 1 and 2. An elevator 2 is installed vertically at the starting end of a distribution conveyor 1 that is horizontally suspended at a height.
The upper discharge port 3 is communicated via the input chute 4,
Further, a plurality of processing devices 5a to 5c such as a circulation dryer are respectively disposed below the distribution conveyor 1. After the conveyed material such as powder or granules is conveyed from the bottom to the top by the elevator 2, the N drive is carried out. The distribution conveyor 1 is driven by the device 6 for horizontal conveyance, thereby distributing and supplying to each of the processing devices 5a to 5c.

Therefore, according to the present invention, an overflow chute pipe 8 is provided from the terminal end of the distribution conveyor 1 to the overflow pipe '&7 of the rice receiving box on the ground, the reflux conveyor, etc. - The full amount sensing mechanism 9 is installed at the position.

Also, from the discharge port 3 above the elevator 2 to the input hopper 1 below.
An overflow chute pipe 11 is also connected to the 0~
A sensing mechanism 9' similar to that described above is also installed in the middle of this pipe 11.

Next, the full amount sensing mechanism 9 will be explained with reference to FIGS. 3 to 5. A storage case 12 is attached in the middle of the pipe 8, and these are communicated by two upper and lower holes 13 and 22. A bar 14 is inserted in the middle of the bar 14 so as to be supported by a shaft 16 rotatably supported by a bearing 15 so as to be able to rotate up and down.

A chevron-shaped detection body 11 is attached to the end of the bar 14 on the pipe 8 side, and a balance weight 18 is attached to the end of the bar 14 on the storage case 12 side. is placed on a support fitting 19 to hold the bar 14 horizontally.

The projected plane area of the detection object 11 is at least a certain percentage of the cross-sectional area of the pipe 8, and the inclined surface is inclined at an angle of 45 degrees or more, so that a very small amount of objects are constantly being conveyed while the distribution conveyor 1 is in operation. The system is designed not to operate against objects that sporadically fall into the overflow chute pipe 8.

In addition, a magnetic body 20 is attached to the detection body 17, and when the amount of overflow of the conveyed object to the pipe 8 is very small, the bar 14 becomes horizontal as shown by the solid line in Fig. 4. The detection body 17 is located above and the magnetic body 20 is located in the storage case 1.
However, if the amount of overflow into the pipe 8 exceeds a certain amount and the detection body 11 descends as shown by the two-dot chain line in FIG. 4, the magnetic body 20 is inserted into the storage case 12 through the lower hole 22.
After the detection switch 21 is operated in a non-contact manner, the detection body 11 moves downward, and then the balance weight 18 automatically returns the detection body 17 and the like to the original position.

Note that the reference numeral 23 is a lid for inspection. Thus, since the automatic entrainment device of the conveying machine according to the present invention is configured as described above, the conveyed objects are distributed and supplied to the processing devices 5a to 5c by the distribution conveyor 1, and the objects are distributed and supplied to the processing devices 5a to 5c.
Until the overflow chute pipe 8 reaches full capacity, the amount of objects overflowing from the overflow chute pipe 8 is extremely small. Therefore, the full amount sensing mechanism 9 does not issue an ejection signal, and the distribution conveyor 1 stops conveying the objects. are performed continuously.

After that, when the processing devices 5a to 5c become full and a large amount of transported objects inevitably overflows from the overflow chute pipe 8, the full amount sensing mechanism 9 operates the detection switch 21 by lowering the detection body 17. 1, the distribution conveyor 1 is activated by, for example, cutting off the power to the driving device 6 using a signal generated from the full amount sensing mechanism 9.
The movement is automatically accompanied.

At this time, since each of the processing apparatuses 5a to 5c has a transport mechanism and the like inside itself, even if the processing apparatuses become full, the subsequent processing will not be hindered.

Furthermore, in the event that an unexpected blockage occurs in the input chute 4 from the elevator 2, a certain amount or more of the transported material will overflow from the overflow chute pipe 11 provided in the elevator 2, and this will be detected. The elevator 2 is automatically ejected as a result of being sensed by the mechanism 9'.

As described above, according to the present invention, when conveying objects such as powder or granular materials to a plurality of processing devices 5a to 5c using a conveyor such as the distribution conveyor 1, it is possible to prevent the processing devices 5a to 5c from being full. Since the full capacity sensing mechanism 9 is detected at one location and the conveyor is automatically taken out, the structure is simplified and the cost can be reduced by line.

Furthermore, a similarly constructed sensing mechanism 9' can detect a blockage in the elevator 2 and remove it.

Furthermore, since the sensing mechanisms 9, 9' are installed at a height close to the ground surface, inspection and maintenance are easy.

It goes without saying that the present invention can also be applied in the same way even when there are a plurality of conveyors and the like.

[Brief explanation of drawings]

Figures 1 and 2 are front and side views showing an example of a powder and granular material processing facility to which the present invention is applied. Figure 3 is a plan view showing an embodiment of an automatic stop device for a conveyor according to the present invention. FIG. 4 is a sectional view taken along the line TV-IV in FIG. 3, and FIG. 5 is a sectional view taken along the line 2-V in FIG. 1...Distribution conveyor, 2...Elevator,
3...Discharge port, 4...Input chute,
5a to 5c...processing device, 6...
Drive device, I...Overflow receiver, 8.11
...Overflow chute pipe, 9...
...Full sensing mechanism, 9'... Sensing mechanism, 10.
...Input hopper, 12...Storage case,
13.22...Blank hole, 14...Bar, 15...Bearing, 16...Shaft, 17.
... Detection object, 18 ... Balance weight, 19 ... Support metal fittings, 20 ... Magnetic material, 21 ... Detection switch ~ 23.・・・・・・
Lid for inspection.

Claims (1)

[Scope of utility model registration request] In a powder and granular material processing facility configured to provide a plurality of processing devices under a distribution conveyor and to supply the processing devices to the full with objects to be conveyed such as powder and granules, 1 the terminal end of the conveyor; An overflow pipe is provided at the bottom of the overflow pipe near the ground, and a full amount sensing mechanism that is activated only when a predetermined amount or more of the material to be transported has flowed down is provided in the lower part of the overflow pipe near the ground. An automatic ejecting device for a conveyor in a powder and granular material processing facility, which is characterized by automatically stopping the machine.