JPH0789597A - High viscosity liquid feeder - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a feeder for a high-viscosity liquid, which can stably dispense even a high-viscosity liquid without fluctuation in supply. [Structure] When the roller 2 immersed in the liquid to be supplied 4 is driven to rotate, the highly viscous liquid to be supplied 4 adheres to the peripheral surface of the roller 2 and moves. The high-viscosity liquid to be supplied attached to and moving on the peripheral surface of the roller 2 is scraped off by the peeling body 6 and discharged to the raw material container 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-viscosity liquid feeder used for dispensing high-viscosity liquid.

[0002]

2. Description of the Related Art In the chemical industry, food industry, pharmaceutical industry, etc., pumps are used for dispensing liquids. The type of pump used is selected according to the viscosity of the liquid to be supplied,
The current situation is that supply fluctuations are kept low.

[0003]

However, when the viscosity of the liquid becomes high (about 400 centipoise to 600 centipoise), there is a problem that the conventional pump has a large supply fluctuation and cannot stably dispense. .

An object of the present invention is to provide a feeder for high-viscosity liquid, which can stably dispense even high-viscosity liquid without fluctuation in supply.

[0005]

According to a first aspect of the present invention, there is provided a high-viscosity liquid feeder in which a part of the peripheral surface is immersed in the liquid to be supplied and is driven to rotate, and one end of the roller is provided on the peripheral surface of the roller. The peeling body is provided in close proximity to the peeling body, and the peeling body scrapes the liquid to be supplied from the peripheral surface of the roller and discharges the liquid.

The feeder for high-viscosity liquid according to claim 2 is
A raw material container in which the liquid to be supplied is stored, a roller in which a part of the peripheral surface is immersed in the liquid to be supplied in the raw material container and is driven to rotate, and peeling in which one end is arranged close to the peripheral surface of the roller. Body, a balance that measures the load by supporting the raw material container, the roller, and the peeling body, and the rotation speed of the roller is controlled so that the weight reduction value per unit time of the measured load value of the balance approaches the target weight value. And a control unit that operates.

[0007]

According to the structure of the first aspect, when the roller immersed in the liquid to be supplied is driven to rotate, the liquid to be supplied with high viscosity adheres to the peripheral surface of the roller and moves. The high-viscosity liquid to be supplied attached to and moving on the peripheral surface of the roller is scraped off and discharged from the peripheral surface of the roller by the peeling body.

According to the structure of the second aspect, when the high-viscosity liquid to be supplied scraped off the peripheral surface of the roller by the peeling body is discharged from the peeling body, the measured load value of the scale decreases. The control unit controls the rotation speed of the rollers so that the weight reduction value per unit time of the measured load value of the balance approaches the target weight value, so that stable dispensing of a constant flow rate can be realized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. A part of the peripheral surface of the roller 2 rotatable around the shaft 1 has a high-viscosity liquid to be supplied 4 stored in the raw material container 3.
Is soaked in. The shaft 1 is connected to the output shaft of the motor 5, and in this embodiment, when the motor 5 is operated, the roller 2
Rotates at a low speed in the direction of arrow A. Reference numeral 6 denotes a peeling body, one end 6a of which is arranged close to the peripheral surface B of the roller 2 and the other end of which is extended above the raw material receiving container 7.

The basic structure is constructed as described above, and the adhesiveness of the high-viscosity liquid is positively utilized, and the roller 2
The liquid to be supplied 4 adhering to the peripheral surface of is peeled off from the peripheral surface B of the roller 2 by the peeling body 6 and discharged to the raw material receiving container 7, so that even a high-viscosity liquid can be stably discharged. .

In this embodiment, a first arm 8 supporting the raw material container 3 and the roller 2 and a second arm 9 supporting the peeling body 6 are mounted on a platform scale 10 and a motor. 5 is attached to the first arm 8,
When the liquid is dispensed from the peeling body 6 to the raw material receiving container 7,
The measured load value W of the platform scale 10 decreases and changes. Control unit 11
Controls the rotation speed of the motor 5 so that the amount of decrease in the measured load value W per unit time approaches the target flow rate w. Specifically, when the flow rate of the material delivered to the raw material receiving container 7 per unit time exceeds the target flow rate, the control unit 11
Reduces the rotation speed of the motor 5 to bring the payout flow rate close to the target flow rate. When the delivery flow rate per unit time to the raw material receiving container 7 is lower than the target flow rate, the control unit 11 increases the rotation speed of the motor 5 to bring the delivery flow rate close to the target flow rate.

As described above, the controller 5 controls the motor 5
By controlling the operation of, it is possible to realize highly accurate constant flow rate dispensing even with a highly viscous liquid. In the above embodiment, the peripheral surface B of the roller 2 and the end 6 of the peeling body 6 are
Although the interval S with respect to a is fixed, the payout flow rate can also be stabilized by controlling the interval S so that the amount of decrease in the measured load value W per unit time approaches the target flow rate w.

In the above embodiment, the facing width H between the peripheral surface B of the roller 2 and the one end 6a of the peeling body 6 is fixed, but the decrease change amount of the measured load value W per unit time is the target flow rate w. The payout flow rate can also be stabilized by controlling the facing width H so as to approach.

[0014]

According to the first aspect of the invention, the viscosity of the liquid to be supplied is used to adhere the liquid to be supplied to the roller,
Since the liquid to be supplied adhering to the peripheral surface of the roller is scraped off by the peeling body and discharged, even a highly viscous liquid can be stably discharged without fluctuation in supply.

According to the second aspect of the present invention, the control unit controls the rotation speed of the roller so that the weight reduction value per unit time of the measured load value of the balance approaches the target weight value. It is possible to realize stable dispensing of a constant flow rate.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an embodiment of a high-viscosity liquid feeder of the present invention.

FIG. 2 is a plan view of the embodiment.

[Explanation of symbols]

 2 roller 3 raw material container 4 liquid to be supplied 5 motor 6 peeling body 10 units scale 11 control unit

Claims (2)

[Claims] 1. A roller having a peripheral surface partly immersed in a liquid to be supplied and driven to rotate, and a peeling member having one end arranged in proximity to the peripheral surface of the roller, and the roller being the peeling member. A feeder for high-viscosity liquid that scrapes off the liquid to be supplied from the peripheral surface of the. 2. A raw material container in which a liquid to be supplied is stored, a roller whose part of its peripheral surface is immersed in the liquid to be supplied of the raw material container and is driven to rotate, and one end of which is close to the peripheral surface of the roller. And a scale for supporting and supporting the raw material container, the roller, and the release body, and the roller so that the weight reduction value per unit time of the measured load value of the scale approaches the target weight value. And a controller for controlling the rotation speed of the high-viscosity liquid feeder.