JPH0511471Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a micrometering device for trace amounts of drug-related substances, and more specifically, powdered feed raw materials such as corn and powdered drugs such as vitamins, amino acids, minerals, and enzymes. When producing compound feed for livestock such as cows, pigs, and chickens by mixing related trace substances, the proportion of the total powdered feed ingredients (100%), including diluents, should be at most 2 to 3%, and at least 0. The present invention relates to a measuring device for weighing minute amounts of powdered drug-related materials, such as % or less.

[Conventional technology]

In the process of making compound feed for livestock, powdered feed ingredients such as corn are stored in a large mixing tank, which is discharged with a screw feeder and weighed with a hopper scale. Since the device is large in size, it is not suitable for measuring trace amounts of chemical-related substances.

Therefore, conventionally, the measurement of trace amounts of powdered chemicals was
A person weighed the ingredients using a platform scale according to the blending ratio, and then added each batch through the notch.

In addition, the weighing device includes a weighing device main body on which a transportation container having a discharge port that can be opened and closed on the bottom is placed on the top surface to measure the weight, and a discharge hole that vertically passes through the weighing device main body. , a cylindrical raw material guiding device fixedly mounted on the weighing device main body and communicating the discharge port of the transportation container with the discharge hole of the weighing device main body; and a cylindrical raw material guide device located below the weighing device main body. A weighing device is known that includes a cutting device that communicates with the discharge hole and acts as a load on the weighing device main body (see, for example, Japanese Utility Model Application Publication No. 60-59124).

[Problem that the invention attempts to solve]

However, among the conventional techniques mentioned above, the former has the problem that it is time-consuming due to manual labor, resulting in extremely poor work efficiency, and increases in costs due to the increase in personnel. For example, in the case of several types of powder and granular materials,
The transportation container must be attached to and detached from the weighing device body for each different type, and therefore,
Not only does this require a transport line, which increases the size of the entire device, but it also takes time to attach and detach the transport container, which again poses a problem of poor work efficiency.

The present invention has been developed in view of these conventional problems, and its purpose is to automate the micro-metering of trace amounts of powdered chemical-related substances so that the measurement can be performed accurately and quickly. It is an object of the present invention to provide a device for measuring trace quantities of chemical-related substances that significantly improves work efficiency and enables cost reduction by reducing personnel.

[Means for solving problems]

For this purpose, in the present invention, a required number of bottles 1 each having a bottom opening for independently storing different types of drug-related trace substances are collectively arranged on a pedestal 3, and the bottles 1 are placed below the group of bottles 1. A casing 16 is provided on the pedestal 3 at the center, and a solenoid valve 36, a recycling solenoid valve 36', etc. are installed in each casing 4' at the lower end of the bin 1, and a pipe line containing a solenoid valve 36, a recycling solenoid valve 36', etc. A screw feeder 4 that rotates in response to the rotational force of each oil motor 11 is provided with its discharge port 5 facing inside the casing 16, and the discharge port 5 of each casing 4'
A plurality of partition plates 14 are provided in the axial direction of the cylindrical body 13.
Grills 12, which are fixedly fixed at predetermined intervals, are attached to each of the bins 1 and slightly above the screw feeder 4, and rotate at a reduced speed in conjunction with the screw feeder 4. Agitators 7 are provided respectively, and the casing 1
Inside 6, there is an endless mechanism that measures the small amount of chemical-related substances discharged and dropped onto the upper surface of the belt 23 by the screw feeder 4 using a single-point load cell 27 combined with a hammer and rod in a stopped state, and is driven when the measurement is completed. A belt conveyor scale 22 is connected to a casing inner frame 3', and a symmetrical U-shaped frame 1 in which the free ends 19 of each other are connected.
The belt conveyor scale 22 is suspended horizontally via a plurality of rods 21 provided on the
Guide plates 29 are provided on both sides in the upward conveyance direction to prevent scattering and leakage of trace amounts of chemical-related substances, and further below the belt conveyor scale 22 are rotary brushes 30 for cleaning the belt surface of the belt conveyor scale 22. It is characterized by a structure in which the shaft is rotatably supported.

[Effect]

The operation of the present device will be explained.

Into each bottle 1, trace amounts of powdered drug-related substances such as vitamins and minerals corresponding to livestock brands such as cows, pigs, and chickens are manually delivered and stored.

Therefore, for example, in order to produce compound feed for adult cows, in order to measure the trace amount of this, the belt conveyor scale 22 is stopped, and the bin 1 (for storing trace amounts of adult cows) is selected from the group of bottles. The cow bin 1) is electrically selected (for example set to a 10 kg metering capacity) by opening a solenoid valve 36 in the oil line via a control device (not shown).
Then, the motor 33 of the oil pump 32 rotates at high speed, and the screw feeder 4 of the cow bottle 1 rotates through the rotation of the oil motor 11, and in conjunction with this, the agitator 7 rotates at a reduced speed, and the agitator 7 rotates at a reduced speed. The material is scraped out by the agitator 7 and discharged from the discharge port 5 by the screw feeder 4, and falls smoothly onto the upper surface of the belt 23 of the belt conveyor scale 22, with pulsation being prevented by the action of the grill 12.

The belt conveyor scale 22 has a weighing function using a one-point load cell 27 combined with a hammer and rod, and when a trace amount discharged on the belt 23 is weighed up to 9 kg, the pump motor 33 automatically rotates at a low speed, and the oil motor 11 rotates at a low speed. As the screw feeder 4 rotates, the rotation slows down, and when the set 10 kg is weighed, the solenoid valve 36 closes, the recycling solenoid valve 36' opens, and the oil motor 11 stops. Then, the screw feeder 4 stops, measurement is completed, and the oil flows back to the recycling side.

When the measurement of the first bottle 1 of the trace amount for cattle is completed,
Subsequently, the second bottle 1 of trace amounts for cattle is automatically selected (for example, 5
Kg), the screw feeder 4 and the agitator 7 are driven in the same manner as described above to start discharging trace amounts of material from the second bin 1, and when the belt conveyor scale 22 weighs up to 4.5 kg, the pump motor 33
rotates at low speed, and when we weigh the set 5 kg, solenoid valve 3
6 is "closed", the recycle solenoid valve 36' is "open", the oil motor 11, etc. are stopped, and the metering is completed.

In this manner, when the measurement of the required types of trace substances for cattle is completed, the belt conveyor scale 22 is driven to discharge one or several types of trace substances on the belt 23 to the outside from the discharge port 28. At this time, the rotating brush 30 rotates to clean the belt surface.

When the discharge of the weighed trace amount is completed, the belt conveyor scale 22 and the rotating brush 30 are automatically stopped by the timer setting, and the next weighing and blending is started.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a schematic front view of the whole, Fig. 2 is an enlarged front view of the main part with a part cut away, and Fig. 3 is an enlarged side view of the main part with a part cut away. A bottle 1 in which trace amounts of powdered medicine-related substances (hereinafter simply referred to as trace substances) such as minerals, enzymes, etc. are stored is made of metal, and has an opening/closing lid 2 on the top surface.
The bottle 1 has an opening at the bottom, and each of the bottles 1 is independent, and a large number of bottles 1 form a collection. For example, the number of bottles in bin 1 is 16, 20, 28,
There are 32 and 40 bottles of each type, and even in the case of 20 bottles, the capacity is a combination of 200 x 10 bottles and 300 x 10 bottles, and these bins 1 are assembled as a group and supported on the pedestal 3 as described above. Each bin 1 independently stores different types of trace substances corresponding to livestock brands.

At the lower end of each bottle 1, there is a screw feeder 4 that rotates within each casing 4' communicating with the bottom opening and independently discharges trace amounts of substances in each bottle 1. Each screw feeder 4 is disposed so as to face inside a casing 16 provided on a pedestal 3 at a lower center portion of the bin 1, and each screw feeder 4 is located inside a sealed gear box 6 and located at a lower part of each bin 1. It is connected via an interlocking chain 8 to an agitator 7 which is rotatably supported by a shaft in a portion (near the screw feeder 4), and is further connected to an oil motor 11 attached to the box 9 via a coupling 10 in the box 9. The rotation of the oil motor 11 rotates the screw feeder 4, and in conjunction with this, the agitator 7 rotates at a reduced speed.

The agitator 7 is used to ensure that trace amounts of powder in the bottle 1 are always properly discharged by the screw feeder 4.

In other words, depending on the amount of stored small quantities, the output may be better or worse depending on the influence of pressure. The agitator 7 rotates in conjunction with the screw feeder 4, and preferably rotates at 1/8 of the screw feeder 4. It is slowed down and rotates.

The screw feeder 4 is used to discharge and drop onto the belt surface of a belt conveyor scale, which will be described later, in order to weigh trace amounts of substances in the bin 1. Yes, but
As shown in FIGS. 4 and 5, a grill 12 is attached in which a plurality of partition plates 14 are fixedly fixed at predetermined intervals in the axial direction of a cylindrical body 13, and trace amounts of substances are removed from each opening 15 of the grill 12. This prevents pulsation and allows the scale to fall smoothly onto the scale belt surface, improving weighing accuracy.

Although not particularly shown, it is also possible to prevent pulsation by attaching a spinner to the grille and rotating the screw at the discharge port at high speed, thereby allowing the product to fall smoothly.

As shown in FIG. 3, the casing 16 extends in the longitudinal direction, and a U-shaped frame 17 is symmetrically mounted on a frame 3' inside the casing 16, and connecting members 18 are connected at two locations on opposite sides of the casing 16. At the same time, the respective free ends 19 are connected via a connecting member 20, and an endless belt is connected below the left and right frames 17 by a total of four rods 21, two on each side. A conveyor scale 22 is installed horizontally and vertically.

The belt conveyor scale 22 includes a belt 23,
It includes a drive wheel 24 driven by a pulley motor, a driven wheel 25, an intermediate wheel 26, and a one-point load cell 27 with a lever installed between the frame body 17 and the lower end of the casing 16 at the rear of the driven wheel 25. When the belt conveyor scale 22 is stopped, a small amount of material discharged onto the belt 23 by the screw feeder 4 is transferred to the load cell 2.
7, and when the measurement is completed, the belt 23 is driven in the direction of the solid line arrow shown in FIG. It is now being transferred to the line.

In addition, guide plates 2 are provided on both sides of the belt 23 in the belt conveyor scale 23 in the upward conveyance direction.
9 is provided to prevent trace amounts from scattering or leaking during weighing and transportation of trace amounts.

Furthermore, a rotary brush 30 that rotates in the same direction as the conveyance direction of the belt 23 by an independent drive source is pivotally supported below the drive wheel 24 of the belt conveyor scale 22, and the rotary brush 30 discharges minute amounts of matter. The belt surface is sometimes cleaned.

As mentioned above, the screw feeder 4 rotates in response to the rotational force of the oil motor 11, and the oil pipe that drives the oil motor 11 is connected to the sixth oil pipe.
It is shown in FIG. 1 with some figures and parts omitted.

In FIG. 6, 31 is an oil tank, 32 is an oil pump, 33 is an oil pump drive motor, 34 is a safety valve, 35 is a pressure gauge, and 36 is branched from the cycle side of the pipe to correspond to each oil motor 11. 36' is a recycle solenoid valve, 37 is a flow control valve that is installed in parallel between each oil motor 11 and the recycling side, and 38 is a check valve.

The piping path is automatically controlled via a control device (not shown), and the oil motor 11 is driven by the "open" operation of the solenoid valve 36 and the "close" operation of the recycling solenoid valve 36'. The Eufeeder 4 and the Ogitator 7 are driven.

[Effect of idea]

Therefore, according to the present invention, a required number of bottles each containing a different type of drug-related trace amount are assembled and arranged on a pedestal, and a drug-related trace amount in a bottle selected from the group of collected bottles is arranged. Objects are discharged and dropped onto the belt surface of a belt conveyor scale by an agitator and a screw feeder, and are weighed by a single-point load cell combined with a hammer and rod. , without having to attach or detach the storage container for the object to be weighed.
Since it can be carried out automatically, continuously, accurately and quickly, work efficiency is significantly improved, and the number of personnel can be reduced, making it possible to reduce costs.

In addition, since the proposed device uses an oil motor to drive the screw feeder, the entire device can be made smaller and requires less installation space, and the oil motor is controlled by a solenoid valve. Therefore, it can be directly imported into a sequencer and automatic control is simple.

In addition, the scale means in the belt conveyor scale uses a single-point load cell combined with a hammer and rod, and a grill is provided at the outlet of the screw feeder, so the load cell has excellent wear resistance and can perform high-precision weighing. It is possible.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a schematic front view of the whole, Fig. 2 is an enlarged front view of the main part with a part cut away, and Fig. 3 is an enlarged front view of the main part with a part cut away. FIG. 4 is an enlarged sectional view of the discharge port of the screw feeder, FIG. 5 is a sectional view seen from direction V, and FIG. 6 is an oil piping diagram. 1... Bin, 3, 3'... Frame, 4... Screw feeder, 4'... Casing, 5... Discharge port, 7... Agitator, 8... Interlocking chain, 11... Oil motor , 12...Grill, 1
3... Cylindrical body, 14... Partition plate, 16... Casing, 17... Frame body, 21... Bar rod, 22...
Belt conveyor scale, 23...Belt, 27
...One-point load cell with hammer and rod, 29...Guide plate, 30...Rotating brush.

Claims (1)

[Scope of utility model registration request] A required number of bottles 1 each having a bottom opening for independently storing different types of drug-related trace substances are assembled and arranged on a pedestal 3, and a casing is placed on the pedestal 3 at the lower center of the group of bottles 1. 16 are provided,
At the lower end of each of the bins 1, there is a screw that rotates in response to the rotational force of each oil motor 11 in the piping line, which includes a solenoid valve 36, a recycling solenoid valve 36', etc. in each casing 4' that communicates with the bottom opening. The Euphider 4 connects its discharge port 5 to the casing 16.
Each casing 4' is provided with a grill 12 facing inward, and each grill 12 is attached to the discharge port 5 of each casing 4', and is made up of a plurality of partition plates 14 fixed at predetermined intervals in the axial direction of the cylindrical body 13. Inside each of the bins 1 and slightly above the screw feeder 4, an agitator 7 is provided, which rotates at a reduced speed in conjunction with the screw feeder 4. The chemical-related trace substances discharged and dropped onto the upper surface of the belt 23 by the screw feeder 4 are weighed in a stopped state by a single-point load cell 27 combined with a hammer rod, and an endless belt conveyor scale 22 is driven when the measurement is completed. connected to the casing inner frame 3';
The belt conveyor scale 22 is suspended horizontally through a plurality of rods 21 provided on a bilaterally symmetrical U-shaped frame 17 whose free ends 19 are connected to each other. There are guide plates 29 on both sides to prevent scattering and leakage of trace amounts of chemical-related substances.
A micro-metering device for chemical-related trace amounts, characterized in that a rotary brush 30 for cleaning the belt surface of the belt conveyor scale 22 is rotatably supported below the belt conveyor scale 22.