JPH0420164Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a device that feeds and supplies powder and granules such as powder and granular fertilizers, pesticides, and seeds. This invention relates to a powder and granular material feeding device in which a driven feeding roll is installed.

[Conventional technology]

This type of powder and granular material feeding device is configured to feed and supply a constant or almost constant amount of powder and granular material stored in the recessed portion of the feeding roll in a natural fall format while driving and rotating the feeding roll intermittently. are doing.

[Problem that the invention attempts to solve]

In the case of this conventional device, since the feeding and feeding means for powder and granular material is a natural fall means, powder and granular material tends to adhere to the recesses of the feeding roll and in the middle of the supply path, leading to variations in the amount of powder and granular material supplied per unit time. Not only that, but there was also the problem of easily causing clogging.

The present invention has an object to improve the above-mentioned conventional problems while configuring the entire device as simply as possible.

[Means for solving problems]

The characteristic configuration of the powder and granular material feeding device according to the present invention is that the feeding case is provided with an air pump for supplying air capable of imparting a feeding force to the powder and granular material to be fed in conjunction with the drive of the feeding roll; The air pump is constituted by a reciprocating type pump that intermittently increases or decreases the supply air pressure, and its functions and effects are as follows.

[Effect]

A constant or almost constant amount of powder and granular material stored in the recess of the dispensing roll can be smoothly dispensed and supplied by the synergistic effect of natural falling force and the forced feeding action of air supplied into the dispensing case by an air pump. .

[Effect of idea]

Therefore, it is possible to suppress adhesion of the powder or granular material to the concave portion of the delivery roll or the middle of the supply path, so that it is possible to equalize the supply amount per unit time and to suppress the occurrence of clogging.

Moreover, since the air pump for this purpose is constructed of a reciprocating type pump that intermittently increases or decreases the supply air pressure, compared to, for example, a case where a continuously rotating fan is installed to continuously blow air,
The pulsating pumping action caused by intermittent fluctuations in the supply air pressure makes it possible to blow away the powder and granules intermittently with impact.

Further, since the air pump is linked to the drive of the delivery roll, there is no need for a special drive device for driving the pump, and the above-mentioned effects can be achieved while simplifying the structure as much as possible.

〔Example〕

Figure 3 shows a riding-type rice transplanter (not shown) with a granular material feeding device attached to the rear. The holding planting arm 4 is a link mechanism for driving the planting arm 3.

A is a powder and granular material feeding device, which includes a storage tank 6 for storing powder and granular material, a feeding case 7 fixedly connected to the lower part of this storage tank 6, a feeding roll 8 provided in this feeding case 7, etc. It consists of
This feed roll 8 is fixed to a rotating shaft 9 rotatably supported by the feed case 7, and is provided at a position facing the feed opening 6a of the storage tank 6.

Further, on the outer periphery of the feed roll 8, there are two types of recesses 8a, 8a and 8 for receiving powder and granular material.
b, 8b are provided, and the rotating shaft 9 and the link mechanism 4 are interlocked and connected by links 10, 11, 12, so that the feeding roll 8 reciprocates at a constant angle via the rotating shaft 9. , granular materials such as fertilizer and seeds stored in the storage tank 6 are transferred to the two recesses 8a,
It is configured to alternately supply downward from 8a or 8b, 8b.

13 is a bellows type air pump as a reciprocating type pump that supplies air for intermittently applying a feeding force to the fed powder and granular material through the opening 7a formed in the feeding case 7;
14 is a mechanism for operating the air pump 13 in conjunction with the drive of the delivery roll 8.

The air pump 13 includes an intake valve 13a and an exhaust valve 13b, and is configured to be freely inserted into and removed from the side of a holding portion 7b formed in the delivery case 7. Further, when the air pump 13 is inserted into the holding portion 7b, the space between the air pump 13 and the feeding case 7 can be maintained in an airtight or almost airtight state.

The interlocking mechanism 14 includes a first link 14a attached to the bracket 7c of the feeding case 7 in a state that allows movement for insertion and removal of the air pump 13, and a second link 14a pivotally connected to the first link 14a.
The link 14b and the third link 14c fixed to the rotating shaft 9 are pivotally connected by a fourth link 14d, and the air pump 13 is fixed to the lower end of the second link 14b. , the air pump 1 is operated in conjunction with the swinging motion of the delivery roll 8.
By compressing 3, air is supplied into the feeding case 7.

Further, the first link 14a and the second link 14
The opening 7a for supplying air can be used as a cleaning opening by releasing the pivot connection with the air pump 13 and removing the air pump 13 from the delivery case 7.

Further, a guide case 15 for guiding the powder and granules is removably fixed to the lower part of the feeding case 7, and the lower end of a hose 16 communicating with the guide case 15 has a cross-sectional shape of approximately V-shape or U
It is formed in the shape of a letter and is connected and fixed to a trencher 17 that forms a trench in the field as the machine advances. In addition, in the figure, 18 is a foreign matter removal tool, and 19 is a covering tool.

Then, when planting seedlings as the aircraft advances, the movement of the link mechanism 4 changes to the links 10 and 1.
1 and 12 to the rotating shaft 9, the feed roll 8 swings back and forth to form both the recesses 8a, 8a or 8b,
The powder and granular material in the storage tank 6 is alternately supplied from 8b. At this time, since air is supplied from the air pump 13, the powder and granular material can be smoothly fed and supplied due to the synergistic effect of the natural falling force and the forced feeding force of the air. The fed powder and granules are then supplied into the field via the hose 16 and groove cutter 17.

[Brief explanation of drawings]

The drawings show an embodiment of the powder delivery device according to the present invention, in which FIG. 1 is a longitudinal side view, FIG. 2 is a side view, and FIG. 3 is an overall side view of the seedling planting device. 6... Powder storage tank, 7... Feeding case,
8...Feeding roll, 13...Air pump.

Claims (1)

[Claims for Utility Model Registration] 1. In a powder or granular material dispensing device in which a driven dispensing roll 8 is installed in a lower dispensing case 7 of a powder storage tank 6, the dispensing roll 8 is installed in the dispensing case 7. An air pump 13 is provided for supplying air capable of imparting a feeding force to the delivered powder and granular material in conjunction with the drive of the pump, and the air pump 13 is a reciprocating type pump that intermittently changes the supply air pressure. A powder feeding device configured as follows. 2. The powder and granular material dispensing device according to claim 1, wherein the air pump 13 is configured to be detachably attached to the dispensing case 7. 3. The powder and granular material feeding device according to claim 1 or 2, wherein the air pump 13 is of a bellows type.