JP2501217Y2 - Belt type quantitative feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a belt type quantitative feeder.

(Prior Art) In a belt-type fixed-quantity feeder configured to always drop and feed powdery granular material sequentially supplied from a hopper by a belt conveyor from one end of the belt conveyor to a next step, using a belt conveyor, Usually, the drop supply amount of the transferred product is controlled by adjusting the speed of the belt conveyor in accordance with the change in the weight of the entire transferred product on the belt conveyor and on the hopper side. From the point of view of accuracy, it is required that the transferred product be in a state of being continuously dropped by an appropriate amount at the end of the belt conveyor. And this fall state is mainly controlled by the fluidity of the transported material.

However, in particular, when the transferred material is in the form of powder, its fluidity depends on various conditions such as the water content and the property of the transferred material such as adhesiveness or the size of the layer thickness of the transferred material on the belt conveyor. There is a possibility that it may change significantly, and in some cases, the transferred material may drop from the end portion of the belt conveyor in a lump form, and it may be difficult to ensure the accuracy of quantitative supply due to the intermittent falling of the transferred material.

In spite of such circumstances, the fluidity of the transferred product has not been sufficiently considered in the past.
Although it is a slightly very special example, a motor-driven dispersion rotor is arranged at the end of the conveyor belt on the side where the transported material falls, and the dispersed rotor disperses the transported material to enhance its fluidity. Is only sporadic.

(Problems to be solved by the invention) As described above, in the belt type quantitative feeder, when the fluidity of the transferred material is not taken into consideration, the control accuracy of the quantitative control cannot be sufficiently ensured, but the dispersion is not sufficient. Even though the rotor is arranged, the fluidity of the transferred product is improved to some extent, but the structure of the device tends to be large,
Further, because of the use of the motor, there is a problem in versatility such that the use of the motor in a powder atmosphere is restricted in terms of maintaining its function, and it is difficult to say that it is a suitable means.

Therefore, the present invention is to provide a belt-type fixed-quantity feeder in which a fixed amount of fluidity can be imparted to a transferred material with a simple structure to perform the fixed-quantity supply more accurately.

(Means for Solving the Problems) As a concrete means for solving the above problems, the present invention conveys powdery and granular transferred substances sequentially supplied from a hopper by a belt conveyor and the end portion of the belt conveyor. In the belt type constant amount feeder, which is configured to drop and supply to the next process side, and to control the speed of the belt conveyor in order to constantly maintain a constant drop and supply amount of the transferred material, a predetermined vibration is generated. It is characterized in that the vibration generating means is arranged in a state of being immersed in the transfer article on the belt conveyor.

(Operation) Since the present invention has such a configuration, by activating the vibration generating means that is immersed in the transferred object on the belt conveyor, the transferred object is It is sufficiently loosened by the vibration from the inside to give it proper fluidity.The transferred material falls continuously from the end of the belt conveyor in almost the same drop state by obtaining proper fluidity. Thus, the effect of stabilizing the correlation between the speed of the belt conveyor and the falling amount can be obtained.

(Effects of the Invention) Therefore, according to the belt type quantitative feeder of the present invention, since the correlation between the speed of the belt conveyor and the falling amount of the transferred object is stable, the supply amount control is performed by adjusting the speed of the belt conveyor. When it is performed, the control accuracy is further enhanced, and as a result, the practical effect that the reliability of the device can be improved can be obtained.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a belt type quantitative feeder Z according to an embodiment of the present invention. This belt type quantitative feeder Z
Uses a powdery granular material as a transfer material and drops and supplies it in a predetermined amount to the next step, and is provided with a weighing device 1 including a weighing device 2 and a weighing material mounting base 3. The hopper 4 is mounted via the hopper base 10 and the conveyor device 5 described below is mounted via the conveyor base 15 on the weighing object mounting base 3. Reference numeral 8 is a damper device 8 for controlling the feeding of the raw material into the hopper 4, and the hopper 4 is connected via a flexible joint 9.
Is located above.

The conveyor device 5 is constructed by arranging a belt conveyor 7 of a predetermined length in a conveyor frame 6 extending substantially horizontally, and connecting one end 7a of the belt conveyor 7 to a lower portion 4a of the hopper 4. It is fixed to the conveyor frame 15 in a state of being positioned below the charging port member 11.
The belt conveyer 7 has a variable speed motor 13
The vehicle is driven by the vehicle and its speed is adjusted.

Further, the other end portion 7b of the belt conveyor 7 serves as a drop supply portion 16 that supplies the transferred material A, which has been loaded onto the belt conveyor 7, to the next process through the discharge port member 12 and drops the material. The present invention is applied to a position near the supply unit 16 and a vibration generation means 19 described later is arranged.

As shown in the enlarged view of FIG. 2, the vibration generating means 19 includes a vibrator 20 of a known structure fixed to the one end 6a side of the conveyor frame 6, and one end 21a thereof connected to the vibrator 20 and the other end thereof. An arm 21 that protrudes further forward than the belt roller 14 of the belt conveyor 7 along the axial direction of the arm 21 through a supporting member 23 fixed to the side of the conveyor frame 6 in the conveyor frame 6, and the arm 21. , And a plurality of (six in this embodiment) vibrating rods 22, 22, ... Therefore, by vibrating the arm 21 in the axial direction (direction of arrow ab) by the vibrator 20,
.. also vibrate integrally with the arm 21 along the flow direction of the belt conveyor 7.

Each of the vibrating rods 22, 22, ... Is the other end of the arm 21.
From the base end 22a fixed to the 21b side to the belt conveyor 7
After it hangs downward toward the belt conveyor 7, the intermediate portion 22b is bent at a substantially right angle to the belt conveyor 7 at a position substantially perpendicular to the drop supply portion 16 side (that is, the vibrator 20 side). Further, the tip end portion 22c of the extending portion and the portion corresponding to the belt roller 14 is curved downward along the outer periphery of the belt roller 14. still,
In this case, at the vertical mounting positions of the vibrating rods 22, 22, ..., The intermediate portion 22b and the tip portion 22c are placed and conveyed on the belt conveyor 7 while the belt type quantitative feeder Z is in operation. It is set relative to the belt conveyor 7 so as to be located in the substantially central portion of the layer thickness of the transferred material A in an immersed state.

The belt type quantitative feeder Z configured as described above sequentially drops the powdery and granular raw material charged in the hopper 4 onto the belt conveyor 7, and further transfers this to the drop supply unit 16 side by the belt conveyor 7. The drop supply unit 16 drops and supplies to the next process.

In this case, the amount of raw material transferred by the belt conveyor 7, that is, the drop supply amount of the transferred material A, is the weight of the tare including the hopper 4 and the conveyor device 5 of all the transferred materials A detected by the weighing device 1 per hour. It is calculated from the change amount of. Further, the deviation of the drop supply amount from the target supply amount is caused by changing the rotation speed of the motor 13 and
This is done by changing the feed rate of. Therefore,
In order to accurately control the drop supply amount of the transfer material A to the target supply amount, the transfer material A needs to be continuously dropped corresponding to the traveling state of the belt conveyor 7. However, when the transferred material A is in the form of powder, the fluidity is likely to change greatly depending on its properties, the layer thickness at the time of transfer, and the like. As described above, the lumps may be dropped from the belt conveyor 7 intermittently, and as a result, the control accuracy of the drop supply amount may be impaired.

However, in this embodiment, since the vibration generating means 19 is arranged in the vicinity of the drop supply section 16 of the belt conveyor 7, the vibration generating means 19 is activated when the belt type quantitative feeder Z is in operation. And the drop supply unit
Each vibrating rod 22,22, ...
.. vibrates in the transfer material A, and even if the transfer material A is in the form of a lump by the vibrating rods 22, 22, ..., It is sufficiently loosened and a proper fluidity is given. Therefore, the transferred material A can be maintained in a substantially constant falling state regardless of its properties and the like, whereby the quantitative supply control of the transferred material A can be performed more accurately, and by extension, the belt type quantitative feeder Z. The reliability of the product itself is enhanced.

Although the vibrating rod 22 is arranged only in the vicinity of the drop supply unit 16 in this embodiment, the present invention is not limited to this. For example, as shown by the chain line in FIG.
The vibrating rod 22 'is moved from the drop supply section 16 to the above-mentioned charging port member 11
It can also be arranged in a wide range over the part, and in the case of such a configuration, there is an advantage that the transferred material A can be loosened from an earlier period and higher fluidity can be secured.

[Brief description of drawings]

FIG. 1 is an overall view of a belt type quantitative feeder according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the tip portion of the conveyor device shown in FIG. 1, and FIG. 3 is III-III of FIG. FIG. 1 ... weighing device 2 ... weighing device 4 ... hopper 5 ... conveyor device 7 ... belt conveyor 19 ... vibration generating means 20 ... vibrator 21 ... arm 22 ... vibrating rod

Claims (1)

(57) [Scope of utility model registration request] 1. A powdery granular transfer material sequentially supplied from a hopper is conveyed by a belt conveyor and is dropped and supplied to the next process side at an end portion of the belt conveyor. A belt-type quantitative feeder adapted to control the speed of the belt conveyor so as to always maintain a constant amount, and a vibration generating means for generating a predetermined vibration is immersed in the transfer object on the belt conveyor. A belt type quantitative feeder characterized by being arranged in a pressed state.