JPH0214328Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention can be attached to agricultural machinery such as rice transplanters,
A granular material feeding device that supplies granular materials such as fertilizers and seeds to a field, specifically, a granular material feeding device that forms a granular material supply groove in the field as it progresses and supplies the granular material into the formed groove. A granular material supply tool is provided, and a granular material feeding device is provided diagonally above the powder material feeding device, and a pipe for guiding the powder and granular material fed from this feeding device to flow down to the powder granular material feeding device. The present invention relates to an agricultural powder supply device equipped with the following.

[Conventional technology]

This type of powder supply device is extremely convenient, as it can, for example, operate a rice transplanter to plant seedlings and apply fertilizer at the same time.

However, since the powder supply tool for supplying powder and granular materials such as fertilizers forms a powder supply groove in the field, the powder and granular materials may not be supplied properly due to the influence of moisture from the field. In many cases, the powder or granules were clogged with the ingredients or the flow guide pipe, making it impossible to feed the powder or granules as desired. For this reason, in the past, workers carried out work while visually checking the supply of powder and granules, but they often overlooked it.

[Problem that the invention attempts to solve]

The present invention focuses on these conventional drawbacks, and provides a practical agricultural powder feeding device that can reliably and sensitively detect clogging of powder and eliminate the harmful effects caused by clogging. This is what I am trying to do.

[Means for solving problems]

In order to achieve this objective, the agricultural powder supply device according to the present invention has a downstream guide pipe or a powder supply device.
A pressure sensing sensor is installed in such a way that its pressure sensing surface is flush with the inner surface of the downflow guide tube or the powder/granular material supply tool, and a pressure sensing sensor is installed on the pressure sensing surface that protrudes into the downflow guide tube or the powder/granular material supply tool. It is characterized by a series of rod-shaped sensing tools.

[Effect]

Since the pressure sensor is attached to the flow guide pipe or the powder supply device, while the powder is flowing down as desired, the pressure sensor is in contact with the pressure sensing surface of the powder and granules. You can confirm the supply. However, simply providing a pressure sensor does not produce a very large impact force as the powder slides down the pressure sensing surface, making it difficult to provide sensitive and reliable sensing. In this regard, the device of the present invention ensures that the falling powder collides with the rod-shaped sensing device protruding into the flow guide tube or the powder supply device, and the impact force is transmitted through the sensing device to the pressure sensing surface. This enables sensitive sensing.

[Effect of idea]

Therefore, it is possible to sensitively and reliably detect clogging of powder and granular material, and to prevent any adverse effects caused by clogging.

〔Example〕

To explain an embodiment of the agricultural powder supply device according to the present invention, Fig. 3 shows the seedling planting device part of a riding rice transplanter. The system is comprised of a seedling planting mechanism 3, a float 4, etc. Reference numeral 5 denotes a powder/granular material supply tool having an approximately V-shaped or U-shaped cross section with an open rear end. Fertilizer 8, which is an example of granular material, is supplied into the groove 7 while forming the groove 7. Reference numeral 9 denotes a powder delivery device, and a storage tank 10 that stores the fertilizer 8.
The feeding rotor 11 is connected to the seedling planting mechanism 3 and driven to rotate, and is provided diagonally above the powder supply tool 5 on the rear side of the machine body. Reference numeral 12 denotes a downstream guide pipe consisting of a hose 12A and a connecting pipe 12B, which connects the feeding device 9 and the powder supply tool 5 in communication, and guides the fertilizer 8 fed from the feeding device 9 to the feeding tool 5. belongs to. Of this downstream guide pipe 12,
A pressure sensing sensor 13 is embedded in the connecting pipe 12B portion, and is attached so that its pressure sensing surface 14 is flush with the inner surface of the connecting pipe 12B. The pressure sensor 13 is of a type that senses intermittent pressure changes and converts them into electrical signals, and the electrical signals are processed by a control section (not shown) to detect intermittent pressure changes. When the fertilizer 8 is stopped, an alarm 15 such as a buzzer or a lamp is activated to notify that the fertilizer 8 is clogged. And, on the pressure sensing surface 14 of this pressure sensing sensor 13,
A rod-shaped sensing tool 16 is arranged in series, and this sensing tool 16 protrudes into the connecting pipe 12B so as to run almost perpendicularly to the connecting pipe 12B. In addition,
In the figure, reference numeral 17 indicates a foreign matter separating tool provided in front of the powder supply tool 5, and reference numeral 18 indicates a soil covering plate that prevents the fertilizer 8 supplied into the supply groove 7 from flying out.

Therefore, when planting seedlings as the machine progresses, the fertilizer 8 in the storage tank 10 is sequentially delivered by the rotary drive of the delivery rotary body 11. The fertilizer 8 flows down in the flow guide pipe 12 and reaches the powder supply tool 5, and is supplied by the supply tool 5 by falling into the supply groove 7 formed next to the planned planting area of the seedlings. . At this time, since the rod-shaped sensing tool 16 protrudes inside the downflow guide pipe 12, the fertilizer 8 flowing down reliably collides with this sensing tool 16. Then, the impact force is transmitted to the pressure sensing surface 14 of the pressure sensing sensor 13 via the sensing device 16, so if the flow guide pipe 12 is clogged with the fertilizer 8 and the flow of the fertilizer 8 stops, an alarm will be issued. The container 15 is activated to notify the operator that the fertilizer 8 is clogged.

[Another example]

FIG. 4 shows another embodiment, in which the pressure sensor 13 is attached not to the downstream guide pipe 12 but to the front and upper part of the powder supply tool 5, and the pressure sensor A rod-shaped sensing tool 16 connected to 14 projects into the powder supply tool 5. Normally, clogging of the fertilizer 8 is likely to occur in the downstream guide pipe 12 near the feeder 5, so when the pressure sensor 13 is attached to the feeder 5 as in this embodiment, the clogging of the fertilizer 8 can be quickly removed. has perceivable benefits.

[Brief explanation of the drawing]

The drawings show an embodiment of the agricultural powder supply device according to the present invention, in which Fig. 1 is a partially cutaway side view of the main part, Fig. 2 is a cross-sectional plan view of the main part, and Fig. 3 is a side view of the whole. 4 are partially cutaway side views of essential parts showing another embodiment. 5... Powder supply tool, 6... Field scene, 7... Powder supply groove, 8... Fertilizer showing an example of powder and granule, 9... Powder delivery device, 12... Downflow guide pipe, 13... Pressure sensing Sensor, 14...pressure sensing surface, 16...sensing tool.

Claims (1)

[Scope of utility model registration request] A powder supply tool 5 is provided that forms a powder supply groove 7 in the field area 6 as the field progresses, and supplies the powder 8 into the formed groove 7. In an agricultural granular material feeding device, a granular material feeding device 9 is provided at an obliquely upper location, and a pipe 12 is provided for guiding the granular material 8 fed from the feeding device 9 downward to the granular material feeding tool 5. A pressure sensing sensor 13 is attached to the downflow guide pipe 12 or the powder supply tool 5, and its pressure sensing surface 14 is connected to the downflow guide pipe 12.
Alternatively, it is installed flush with the inner surface of the powder supply tool 5, and on the pressure sensing surface 14,
This is an agricultural powder supply device in which a rod-shaped sensing device 16 protruding into a downstream guide pipe 12 or a powder supply device 5 is arranged in series.