JPH0915017A - Constant quantity ejection device - Google Patents

Abstract

PURPOSE: To provide a constant quantity ejection device wherein constant quantity ejection is made possible regardless of properties of liquid such as specific gravity, viscosity, or the like, and temperature and quantity of storage. CONSTITUTION: A cylindrical rotation drum part 17 on which cup parts 17a-17c of constant volume are formed in the form of one or a plurality of recesses on the circumferential face is rotated and controlled by a motor 19 with its circumferential face coming into contact with the edge part 3a of an ejection opening 3 provided on the bottom part of a tank 1. The rotation of the motor 9 is stopped for a specified time at a top position where the cup part and the edge part of the ejection opening 3 agree with each other, and liquid 2 of constant volume is ejected in the cup part at the top position from the tank 1. After the ejection, the rotation of the rotation drum is started, when the cup part reaches a directly bottom position, the rotation is stopped for a specified time, and the liquid 2 in the cup part is ejected in a vessel 4. A directly bottom opening 21b in which the liquid 2 of the cup part is ejected in the vessel 4 is formed in the directly bottom part of a shell part 21 and a top opening part 21a opposed to the edge part 3a is formed in the top part of the shell part 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quantitative dispensing device capable of accurately dispensing a fixed quantity of any liquid having different properties.

[0002]

2. Description of the Related Art FIG. 2 is a schematic configuration diagram showing a first configuration example of a conventional quantitative dispensing device. In FIG. 2, the tank 1
A liquid 2 is stored inside. At the bottom of the tank 1, the central portion is inclined downward to form a spout 3, and the liquid 2 is spouted into the container 4 from the tip 3a. This spout 3
A flow meter 5 and a valve 6 are attached from the tank 1 to the tip portion 3a. The measurement results of the flow meter 5 are integrated by the integrator 7, and the integration result of the integrator 7 is input to the controller 8. The valve 6 is opened and closed by a motor (not shown) whose rotation is controlled by the controller 8.

When the controller 8 receives the fixed amount dispensing instruction, the motor opens the valve 6 to start the dispensing of the liquid 2.
The flow meter 5 measures the flow rate of the liquid 2 at this time, and the integrator 7 integrates the flow rate of the liquid 2 (flow rate per hour) measured by the flow meter 5. The controller 8 closes the valve 6 by the motor when the flow rate of the liquid 2 integrated by the integrator 7 reaches a predetermined amount. As a result, a fixed amount of liquid
Is poured out.

FIG. 3 is a schematic configuration diagram showing a second configuration example of a conventional fixed-volume dispensing device. In FIG. 3, the spout 3
A weight sensor 9 is installed immediately below the tip 3a of the container 3 and the container 4 is placed thereon. The signal of the weight sensor 9 is input to the weight measuring device 10, and the measurement result of the weight measuring device 10 is input to the controller 8. In the example shown in FIG. 3, the specific gravity of the liquid 2 in the tank 1 is measured in advance, and the weight at a fixed amount (liquid amount) is obtained.

When the controller 8 receives the quantitative dispensing instruction, the motor opens the valve 6 by the motor. The weighing machine 10 is a container 4
The weight of the liquid 2 poured into the inside is measured, and when this weight reaches a predetermined amount, the controller 8 closes the valve 6 by the motor. As a result, a fixed amount of the liquid 2 is poured into the container 4.

FIG. 4 is a schematic configuration diagram showing a third configuration example of a conventional quantitative dispensing device. In the example shown in FIG. 4, the flow rate of the liquid 2 poured out from the tip 3a of the spout 3 per unit time is measured in advance. Also, the time required for quantitative dispensing is obtained from the flow rate per unit time. The controller 8 opens the valve 6 by the motor when receiving the quantitative dispensing instruction. After that, the controller 8 measures the time after the valve 6 is opened by the timer 11, and when the time calculated in advance is reached, the valve 6 is closed by the motor. As a result, a fixed amount of the liquid 2 is poured into the container 4.

[0007]

However, in the above-mentioned conventional constant-volume dispensing device, when the liquid 2 is soup, oil, etc., the valve 6 is controlled by the amount of the liquid 2 stored in the tank 1. The flow velocity of the passing liquid 2 changes, and the specific gravity and the viscosity change depending on the temperature of the liquid 2. Therefore, there is a problem that it is difficult to accurately dispense a fixed amount with the above-mentioned conventional fixed amount dispensing device. Also,
When the liquid 2 stored in the tank 1 is replaced with another liquid having a different property, there is also a problem that the specific gravity and the time required for pouring have to be measured again. Furthermore, liquid 2
If the powder contains fixed materials such as powder or granules,
The conventional fixed-volume dispensing device could not handle it. The present invention has been made under such a background, and provides a constant-volume dispensing device capable of dispensing a fixed amount regardless of properties such as specific gravity and viscosity of liquid, temperature and storage amount. It is an object.

[0008]

Means for Solving the Problems The structural features of the invention for solving the above-mentioned problems are as follows: a tank for storing a liquid, a liquid spout provided at the bottom of the tank, and a liquid spout. The circumferential surface contacts and rotates, and a cup portion having a constant volume facing the liquid spout is formed on the circumferential surface.
A cylindrical rotary drum part formed of one or a plurality, a rotary drum part rotatably accommodating the rotary drum part, a top opening part facing the liquid pouring port at the top part thereof, and a cup part liquid container just below the top opening part. And a shell part having an opening directly below it formed therein.

[0009]

According to the present invention, the liquid spout provided at the bottom of the tank for storing the liquid is in contact with the circumferential surface of the liquid spout, and one or a plurality of cup portions having a constant volume are formed on the circumferential surface. The rotation of the cylindrical rotating drum unit is controlled. The rotation is stopped for a certain period of time at the top position where the cup portion and the liquid pouring hole coincide, and a certain amount of liquid is poured from the tank into the cup portion.
After pouring the liquid, the rotation of the rotary drum starts, and when the cup reaches the position directly below, the rotation is stopped for a certain period of time,
The liquid in the cup part is poured into the container. The shell part rotatably houses the rotating drum part, and a top opening facing the liquid spout is formed at the top of the shell, and an opening just below the top opening for pouring the liquid of the cup part into the container is formed immediately below the shell. Has been done.

[0010]

Embodiments of the present invention will be described below.
FIG. 1 is a schematic configuration diagram showing a configuration of a quantitative dispensing device according to an embodiment of the present invention, the same elements as those in FIGS. 2 to 4 are denoted by the same reference numerals and the description thereof will be omitted. In FIG. Reference numeral 12 is a temperature sensor for measuring the temperature of the liquid 2, 13 is a heat retaining device arranged so as to surround the tank 1, 14 is a temperature controller, and a measured value is input from the temperature sensor 12, and this is a constant set value. Heater 13a of the heat retention device 13
Control the heating current to the.

Reference numeral 15 is a stirrer for stirring the liquid 2 in the tank 1, which is driven by an external motor 16 to make the temperature distribution of the liquid 2 uniform and to keep the specific gravity and clay uniform.
Although not shown, a level sensor for keeping the level of the liquid 2 in the tank 1 constant and a means for controlling the supply of the liquid 2 to the tank 1 are provided as needed.

The tip portion 3a of the inclined spout 3 at the bottom of the tank 1 is formed in a cylindrical shape and extends downward. 1
Reference numeral 7 denotes a cylindrical rotating drum portion whose circumferential surface is in contact with the tip portion 3a and rotates. 17a, 17b, 17c, 1
Reference numeral 7d denotes a cup portion having a constant volume formed on the circumference of the rotary drum portion 17 in a concave chamber shape at intervals of 90 ° so as to face the tip portion 3a of the spout 3.

Reference numeral 18 denotes a rotation center shaft of the rotary drum portion 17. This rotation center shaft 18 is connected to a motor 19 and is fixed by a motor controller 20 in a clockwise direction (arrow P) at a constant angle (90 ° in this example). Rotation and stop for a fixed time are sequence-controlled.

Reference numeral 21 denotes a cylindrical shell portion which is fixedly arranged, and rotatably houses the rotary drum portion 17 therein. The inner peripheral surface of the shell portion 21 has a rotary drum portion 17
It is opposed to the outer peripheral surface with a slight clearance and can be easily rotated by the motor 19.

Reference numeral 21a denotes a top opening formed at the top of the shell portion 21, the outer peripheral portion of which is in contact with the tip portion 3a of the spout 3, and the inner peripheral portion thereof is at the top position of the rotary drum portion 17. Moving cup (17a in the figure)
Is formed of a through hole that is in contact with the outer peripheral portion of the.

Reference numeral 21b denotes an opening directly below the shell portion 21. An outer peripheral portion of the opening 21b is disposed above the container 4, and an inner peripheral portion thereof is moved to a position directly below the rotary drum portion 17. It is formed of a through hole that comes into contact with the outer peripheral portion of the open cup portion (17c in the figure). 22
Is an O-ring, which is attached to the inner peripheral portion of the opening 21b directly below and contacts the outer peripheral portion of the cup portion located directly below, and the liquid 2 flows out from the clearance between the rotary drum portion 17 and the shell portion 21. Seal.

In such a configuration, the motor controller 2
In the case of 0, the motor 19 is rotated by 90 ° and then stopped for a certain period of time. The illustrated position represents a stopped state, and the cup portion 17a at the top position is filled with the liquid 2 from the tank 1 during this period. At the same time, the liquid 2 filled in the cup portion 17c at the position directly below is poured out by gravity (shown by an arrow F) from the opening 21b immediately below the shell portion 21 and supplied to the container 4.

The cup portion 1 formed on the rotary drum portion 17
Since the volumes of the liquids 7a to 17c are the same, and therefore the amount of the liquid 2 to be filled is the same in each of the cup portions 17a to 17d, the amount of the liquid poured into the container 4 in one pouring is the same with high accuracy. Controlled by.

Therefore, the amount of liquid poured into the container 4 can be accurately controlled by the number of times the liquid is poured from the cup portions 17a to 17d, although it is gradual. Since the number of times of pouring can be controlled by the rotation of the motor 19 by the motor controller 20, by giving the motor controller 20 the set value S of the pouring amount of the liquid 2, the pouring amount to the container 4 is automatically adjusted. Can be managed. Reference numeral 23 is a display device for displaying the amount of the liquid 2 that is poured out by integrating the number of times of pouring.

Although the number of the cup portions 17a to 17d formed on the rotary drum portion 17 is four in the illustrated embodiment, at least one can be realized. If the volume of the cup portions 17a to 17d is reduced, the accuracy of the dispensing amount is improved, but the number of dispensings to obtain the same dispensing amount is increased. Is selected.

[0021]

As described above, according to the present invention, since the temperature of the liquid in the tank is kept uniform by the temperature control and stirring, the specific gravity of the liquid is determined by the number of times the cup portion having a constant volume is cut out. A certain amount of liquid can be poured out regardless of properties such as viscosity, viscosity, etc., temperature and storage amount.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a configuration of a quantitative dispensing device according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a first configuration example of a conventional quantitative dispensing device.

FIG. 3 is a schematic configuration diagram showing a second configuration example of a conventional quantitative dispensing device.

FIG. 4 is a schematic configuration diagram showing a third configuration example of a conventional quantitative dispensing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 2 Liquid 3 Pouring port 4 Container 12 Temperature sensor 13 Heat retention device 14 Temperature controller 15 Stirrer 16 Motor 17 Rotating drum part 17a-17d Cup part 18 Rotation center shaft 19 Motor 20 Motor controller 21 Shell part 22 O-ring 23 Discharge amount display device

Claims (1)

[Claims] 1. A tank for storing liquid, a liquid spout provided at the bottom of the tank, and a circumferential surface of the liquid spout that contacts and rotates,
A cylindrical rotary drum part having one or a plurality of cup parts having a constant volume formed on the circumferential surface facing the liquid pouring outlet, and the rotary drum part rotatably housed at the top of the liquid pouring part. A fixed-volume dispensing device comprising: a top opening facing the outlet, and a shell section formed immediately below the top opening for directly pouring the liquid of the cup section into a container.