JPH09126872A - Fine powder weighing and discharging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately weigh fine powder by preventing the influence of the grain size fluctuation of the powder by fitting a vibrator and rotary feeder to a powder container and providing a number-of-vibration adjusting means which changes the vibration of the vibrator. SOLUTION: A vibrator 4 is fitted to the lower wall of a funnel-shaped container 1 for fine powder. The driving shaft 31 of a feeder motor 3 is connected to a transmission shaft 33 fitted with a rotary feeder 34. A load cell (measuring means) 7 is mounted on a substrate 6 and a retaining frame 2 is put on the load cell 7 with a vibration-proofing means 8 in between. A discharge passage 50 is connected to a blower 5 and the cylindrical lower section 24 of the lower end section of the container 1 is fitted to the middle section of the passage 50 with the opening of the section 24 being opened to the passage 50. The blower 5 and passage 50 constitute a fine powder discharging means. The external casing 10 of the substrate 6 prevents the leakage of water from the container 1 and only the passage 50 passes through the casing 10 and constitutes a feeding device 100. In addition, the load cell 7 measures the consumption of the fine powder by weighing the powder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fine powder measuring and discharging device for measuring and feeding a predetermined amount of fine powder such as fish feed in a farm.

[0002]

2. Description of the Related Art Conventionally, in the field of fisheries, aquaculture such as yellowtail and Thailand has been popular. As feed for these cultivated fisheries, minced sardines mixed with other nutrients have been used for a long time, but in recent years, dry pets obtained by adding nutrients to dry fish meal have come to be widely used. There are many types of dry pets for adults and fry. Further, as a feeding device, it is provided with a container storing powdered or granular food, a discharging means for discharging the food, and a control means for driving the discharging means for a predetermined time, and the control means operates at a preset time. It is known that the discharging means is driven for a predetermined time. This device is installed on the water surface of the aquarium of the cultured fish, and the discharge means is operated by the control means at a predetermined time, whereby the food is sprinkled and supplied onto the water surface.

[0003]

In the above-mentioned conventional apparatus,
Although the amount of food to be discharged is controlled by adjusting the driving time of the discharging means, it is difficult to keep the discharging amount per hour of the discharging means strictly constant. That is, even if the food is discharged while being weighed by an appropriate weighing means, it is inevitable that the particle size, viscosity, and particle shape of the bait vary, and therefore an error occurs in the bait discharge amount. . If accurate discharge (supply to fish) is not carried out, not only will the fish grow poorly if the supply is small, and if the supply is too large, the bait will be consumed wastefully, The bait is deposited on the bottom, and the putrefaction of the deposited bait causes environmental pollution of fish.

Further, in the case of bait for fry, fine powder having a particle size of about 50 to 200 μm is used. In this case, if the bait is stored in a funnel-shaped container and taken out from the lower part thereof. The so-called funnel flow occurs, which hinders the discharge, so that a person manually measures and sprays it. It is possible to give vibration to the container in order to break this funnel flow, but it is difficult to find the optimum frequency of this vibration and adjust it to that frequency. In other words, even if the optimum frequency is set for a certain fine powder, if the viscosity or particle size of the bait or the storage amount in the container changes, the optimum frequency will also change accordingly. Therefore, it is necessary to reset the frequency, and there is a problem that it takes a lot of time to adjust the frequency.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and the fine powder is always accurately measured and discharged from the container without being affected by the change in the particle size of the fine powder. It is an object of the present invention to provide a fine powder measuring and discharging device that can be used.

[0006]

According to a first aspect of the present invention, there is provided a funnel-shaped container for containing fine powder, a vibrator attached to the container, a rotary feeder arranged at the bottom of the container, and a rotary feeder. A feeder motor for driving the feeder and a frequency adjusting means for changing the frequency of the vibrator are provided.

According to a second aspect of the present invention, the frequency adjusting means is composed of control means for turning on and off the vibrator at a predetermined cycle.

According to a third aspect of the invention, the container is supported by an elastic member.

According to a fourth aspect of the present invention, the container is configured to be supported by the measuring means and the load thereof is measured, and the elastic member is arranged between the container and the measuring means. Is.

According to a fifth aspect of the present invention, the container is configured to be supported by weighing means so that the load thereof is measured, and the measurement is performed when the operation of the vibrator is stopped. It has been done.

According to a sixth aspect of the present invention, there is provided control means for sequentially driving and stopping the vibrator, the feeder motor and the measuring means repeatedly at a constant cycle.

According to a seventh aspect of the present invention, the control means is configured to stop the driving and stopping operations when the discharge amount of the fine powder reaches a predetermined amount.

According to the invention of claim 8, a funnel-shaped container for accommodating the fine powder, and a vibrator attached to the container,
It has a rotary feeder arranged at the bottom of the container, a feeder motor for driving the rotary feeder, and a weighing means for supporting the vessel, and the weight is measured by the weighing means when the operation of the vibrator is stopped. It is configured to be measured.

[0014]

According to the invention of claim 1, even if the frequency of the maximum amplitude is changed as a result of the change in the weight of the container containing the fine powder, the vibration is always generated so that the maximum amplitude is generated. Therefore, it is possible to reliably take out the fine powder accurately.

According to the second aspect of the present invention, since the vibration can be adjusted by simply turning the vibrator on and off at a predetermined cycle, the frequency adjusting device is simple and easy to adjust.

According to the third aspect of the present invention, the elastic member supporting the container increases the vibration to obtain a large amplitude, and the natural frequency of the device is decreased to obtain the maximum amplitude of the vibration source frequency. Can be put to a practical level.

According to the invention of claim 4, since the vibration imparted to the measuring means is softened by the elastic member arranged between the container and the measuring means, there is an advantage that the measuring means is protected. is there.

According to the fifth aspect of the present invention, since the measurement is performed when the operation of the vibrator is stopped, it is possible to perform accurate measurement.

According to the sixth aspect of the present invention, the vibrator, the feeder motor and the measuring means are sequentially driven repeatedly at a constant cycle and stopped, so that even if the quality or amount of the fine powder changes, the fine powder can be kept at a predetermined time. There is an advantage that a fixed amount of fine powder can be automatically and accurately supplied.

According to the seventh aspect of the present invention, the repetitive driving and stopping at the constant cycle and the operation and stopping of the repetition are automated, and a predetermined amount of fine powder is automatically and accurately supplied at a predetermined time. There is an advantage that you can.

According to the eighth aspect of the invention, since the weight is measured by the measuring means when the operation of the vibrator is stopped, it is possible to perform accurate measurement.

[0022]

1 to 3, a funnel-shaped container 1 for accommodating fine powder is held by U-shaped holding frames 2 at the upper portions of both sides thereof, and the front surface of a wall below the holding portion. The vibrator 4 is attached to the plate via a mounting plate 40. A lid 35 is attached to the upper portion of the container 1, and a feeder motor 3 is installed on the lid 35 and a drive shaft 3 thereof is installed.
1 extends downwards through the lid 35 and in the container 1 a joint 32
It is connected to the transmission shaft 33 via. This transmission shaft 33
A rotary feeder 34 rotatably arranged in the cylindrical lower portion 24 of the container 1 is attached to the lower end of the container 1. It is preferable that the outlet of the cylindrical lower portion 24 (the lower side of the rotary feeder 34) is formed so as to gradually widen in order to smoothly drop the fine powder. Further, a fine powder charging port (not shown) is formed on the lid 35 so as to be opened and closed.

A substantially triangular substrate 6 having legs 61 is arranged below the container 1, and a rubber support 62 is provided at the lower end of the legs 61. A load cell (measurement means) 7 is installed on the substrate 6, and the holding frame 2 is installed on the load cell 7 via a vibration isolation means 8. The vibration-proof means 8 is composed of a vibration-proof rubber 82 and a pair of holding plates 81 sandwiching the vibration-proof rubber 82 from above and below. The vibration-proof rubber 82 is provided at each corner of the holding plate 81 having a substantially equilateral triangle as shown in FIG. It is arranged in each part. The support 5 is mounted on the anti-vibration means 8.
5 is installed, and the blower 5 is installed on the support base 55 by fixing its mounting portion 51 with a fixing band 51. One end of a cylindrical discharge passage 50 is connected to the blower 5, the discharge passage 50 extends horizontally, and the other end opens to the side of the container 1. The lower cylindrical portion 24 of the lower end of the container 1 is attached by a mounting plate 25, and the lower end opening of the lower cylindrical portion 24 opens into the discharge passage 50. The blower 5 and the discharge passage 50 constitute discharge means for fine powder. Further, the outer casing 10 is provided on the substrate 6.
Is attached, and the outer casing 10 covers the container 1 and the like so as not to splash water. As shown in FIG. 1, only the tip of the discharge passage 50 is covered with the outer casing 10.
The feeding device 100 is configured by penetrating the side wall of the above and opening to the outside laterally.

Further, control means (not shown) is provided, and when the time set by the built-in timer is reached, the control means drives and stops the vibrator 4, the feeder motor 3, the blower 5, and the load cell 7 at a constant cycle. It is configured to be repeated. That is, as shown in FIG. 6, application of vibration, driving of the rotary feeder, discharge of fine powder by driving of the blower 5, and weighing by the load cell 7 are sequentially repeated at regular intervals. This measurement, that is, the measurement signal of the weight measured by the load cell 7 is transmitted to the control means. This measured weight is not only the weight of the fine powder in the container 1, but also the weight of all the load cells (tare weight) on the load cell 8 such as the container 1, the vibrator 4, the blower 5, the vibration isolator 8, and the fine powder in the container 1. Is a total of the weights, and when the fine powder is consumed, the weight is subtracted and the consumption weight is calculated by the control means. When the consumed weight reaches a predetermined amount, that is, when a predetermined amount of fine powder is taken out of the container 1 and discharged, the above-mentioned repeated operation of driving and stopping is stopped.

In the above structure, the feeding device 100 is attached at a predetermined position on the water surface of the aquaculture pond of the farm, and first, the fine powder charging port of the lid 35 is opened and a predetermined amount of the powder is put into the container 1 from the charging port. Charge fine powder (bait). Then, a predetermined feeding time is set in advance in a timer built in the control means (not shown). When the set time is reached, the feeder motor 3 is driven by the control means to rotate the rotary feeder 34 only for a fixed time, thereby supplying the predetermined amount of fine powder in the container 1 into the discharge passage 50. Simultaneously with the rotation of the rotary feeder 34, the vibrator 7 is driven for a certain time to vibrate the container 1 so that the fine powder in the container 1 does not have a funnel flow, and the fine powder is kept in the groove of the rotary feeder 34. It facilitates entry and also helps the fine powder in the groove to fall at the lower end.

At this time, the vibrator 7 is driven to generate vibration at a predetermined frequency, and then the vibrator 7 is stopped, whereby the frequency is gradually reduced from that frequency. In this frequency decreasing process, all frequencies from the highest frequency to the lower frequencies are generated, and vibration of any of these frequencies is the most preferable for the fine powder in the container 1, that is, the maximum in the container 1. Since the resonance frequency is the frequency at which the resonance occurs, the resonance can surely break the funnel flow or prevent the funnel flow from occurring regardless of the type and amount of the fine powder. That is, when the optimum frequency under a certain condition is set and the above operation is started, the optimum frequency also changes when the amount of fine powder in the container 1 decreases or the quality of the fine powder changes. Therefore, the maximum resonance does not occur.

However, when various frequencies are generated by turning on / off the vibrator 7 in each cycle as in the present invention, one of the frequencies becomes the optimum frequency, It is possible to always respond to changes in the above conditions. That is, since the frequency changes from the maximum frequency to the frequency 0 by turning the vibrator 7 on and off, the frequency at which the maximum resonance occurs is P1 as shown by the curve 90 under certain conditions, as shown in FIG. Under the condition, the frequency becomes P2 as shown by the curve 91, and under another condition, the frequency becomes P3 as shown by the curve 92. Although the frequency at which the maximum resonance occurs varies in this way, the optimum frequency can be reliably applied to the container 1 by turning on and off the vibrator 7.

Further, since the container 1 is supported by the vibration isolator 8, this resonance will be amplified, and by lowering the natural frequency of the device, the frequency of the vibration source at which the maximum amplitude can be obtained is increased. Can be put to a practical level.

After the vibration is applied and the fine powder is taken out of the container 1 (finished), the blower 5 is driven for a certain time to discharge the fine powder into the discharge passage 50 by wind pressure. It is discharged from the opening at the other end of and is sprayed in the aquaculture pond. Next, when the vibrator 7 is off, the load cell 7 measures the weight of the fine powder to measure the consumption amount (discharge amount) of the fine powder. As shown in FIG. 7, the consumption weight of the fine powder is as shown in FIG.
Step A for taking out the fine powder from the container 1 by B, vibration generating step B by the vibrator 4, discharging step C of the fine powder by the blower 5 (inclined portion of the weight curve 200), and weighing step D by the load cell 7 (horizontal of the weight curve 200). Part) as one cycle, and this cycle is repeated, and the weight consumed in each cycle is integrated by the control means each time. In this way, when the consumed amount reaches the required amount G, the repetitive operation is stopped by the control means.

A step A for taking out the fine powder from the container 1 by the rotary feeder 34, a step C for ejecting the fine powder by the blower 5, a measuring step D by the load cell 7 (inclined portion of the weight curve 100) and vibrations by the vibrator 4 are generated. The process B (horizontal part of the weight curve 100) may be set as one cycle and this may be repeated. The supply amount (discharging amount) of the fine powder for one time (one cycle) is set to a very small amount of, for example, about 1 g, and the above cycle is repeated many times to thereby give a constantly changing frequency and Helps fish eat lean by feeding body food over time.

As described above, vibrations of various frequencies are applied to ensure that the fine powder is taken out, a predetermined amount is taken out, and the vibration is stopped each time, and the weighing is carried out. By repeating the above, the required amount of fine powder can be accurately supplied to the aquaculture pond.

In the above embodiment, as the frequency adjusting means, the frequency is changed by turning on / off the vibrator 4 by the control means. However, as the frequency adjusting means, the vibration is applied to the vibrator itself. It may be provided with a means that can be changed. Further, the blower 5 as the discharging means and the discharging passage 50 do not necessarily have to be provided, and the rotary feeder 34 may discharge directly from the bottom of the container 1 to the outside. Furthermore, although the above embodiment has been described as an example of spraying fish feed in a farm, the present invention can be similarly applied to weighing and discharging fine powder for other purposes.

[0033]

According to the first aspect of the present invention, even if the frequency that causes the maximum amplitude changes as a result of the change in the weight of the container containing the fine powder, the vibration is always generated so that the maximum amplitude is generated. Therefore, the fine powder can be taken out accurately.

According to the second aspect of the invention, since the vibration can be adjusted only by turning the vibrator on and off at a predetermined cycle, the frequency adjusting device is simple and easy to adjust.

According to the invention of claim 3, the vibration is increased by the elastic member for supporting the container to obtain a large amplitude, and the frequency of the vibration source at which the maximum amplitude is obtained by decreasing the natural frequency of the device is set. Can be put to a practical level.

According to the invention of claim 4, since the vibration imparted to the measuring means is softened by the elastic member arranged between the container and the measuring means, there is an advantage that the measuring means is protected. is there.

According to the fifth aspect of the present invention, since the measurement is performed when the operation of the vibrator is stopped, the weighing can be accurately performed.

According to the sixth aspect of the present invention, the vibrator, the feeder motor and the measuring means are sequentially driven repeatedly at a constant cycle and stopped, so that even if the quality or amount of the fine powder changes, the fine powder will remain at a predetermined time. There is an advantage that a fixed amount of fine powder can be automatically and accurately supplied.

According to the seventh aspect of the invention, the repetitive driving and stopping at the constant cycle and the operation and stopping of the repetition are automated, and a predetermined amount of fine powder is automatically and accurately supplied at a predetermined time. There is an advantage that you can.

According to the eighth aspect of the present invention, since the weight is measured by the measuring means when the operation of the vibrator is stopped, the weighing can be accurately performed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 2 is a front view of FIG.

3 is an explanatory plan view of a lower portion of FIG. 1. FIG.

FIG. 4 is an enlarged explanatory view of a lower portion of FIG.

5 is an enlarged explanatory view of the lower portion of FIG. 1. FIG.

FIG. 6 is a relationship diagram between vibration frequency and amplitude.

FIG. 7 is an explanatory diagram of an implementation process of the device of the present invention.

[Explanation of symbols]

 1 Container 2 Holding Frame 3 Feeder Motor 4 Vibrator 5 Blower 6 Substrate 7 Load Cell (Measuring Means) 8 Anti-Vibration Means 34 Rotating Feeder 35 Lid 81 Holding Plate 82 Anti-Vibration Rubber

Claims (8)

[Claims] 1. A funnel-shaped container for containing fine powder, a vibrator attached to the container, a rotary feeder arranged at the bottom of the container, a feeder motor for driving the rotary feeder, and a vibrator for the vibrator. A fine powder measuring and discharging device comprising: a frequency adjusting means for changing the frequency. 2. The fine powder metering and discharging device according to claim 1, wherein the frequency adjusting means is constituted by control means for turning on and off the vibrator at a predetermined cycle. 3. The fine powder measuring and discharging device according to claim 1, wherein the container is supported by an elastic member. 4. The container is configured to be supported by a measuring means so that the load thereof is measured, and the elastic member is arranged between the container and the measuring means. Item 3. A fine powder measuring and discharging device according to item 3. 5. The fine-powder metering-discharging device according to claim 2, wherein the measuring unit is configured to operate when the vibrator is not operating. . 6. The fine powder weighing and discharging apparatus according to claim 5, further comprising a control means for sequentially driving and stopping the vibrator, the feeder motor and the weighing means in a constant cycle. 7. The fine powder according to claim 6, wherein the control means is configured to stop the driving and stopping operations when the discharge amount of the fine powder reaches a predetermined amount. Weighing and discharging device. 8. A funnel-shaped container for accommodating fine powder, a vibrator attached to the container, a rotary feeder arranged at the bottom of the container, a feeder motor for driving the rotary feeder, and the container. A weighing / discharging device for fine powder, comprising: weighing means for supporting, wherein the weighing means is configured to measure the weight when the operation of the vibrator is stopped.