Working method of liquid dosing device and liquid dosing device

Abstract

Disclosed are a liquid extracting and quantifying device and a working method therefor. The device comprises at least one liquid storage module (1), a pressure regulating module (2), a buffer module (3) and a control module (4). The liquid storage module (1) comprises at least one liquid storage unit (C1), at least one liquid outlet switch (F3) and at least one ventilation switch (F1). The pressure regulating module comprises at least one high negative pressure regulating unit (21) and at least one low negative pressure regulating unit (22). The buffer module comprises a buffer unit, a discharge port of the buffer unit being in communication with a master switch for feeding (F2). The control module (4) is communicatively connected to the liquid storage module (1), the pressure regulating module (2) and the buffer module (3) respectively. A pipeline is pre-extracted with a high negative pressure to discharge air within the pipeline, then the liquid is extracted in a quantified manner with the high negative pressure, and the liquid left within a liquid outlet pipeline is stably extracted with a low negative pressure. The liquid is enabled to be conveyed quickly at first and then steadily during extraction, which effectively improves the service life and reliability of the entire device.

Description

technical field [0001] The invention relates to the technical field of metering of batching equipment, in particular to a liquid metering device and a working method thereof. Background technique [0002] As we all know, it is often necessary to prepare various liquid materials in daily life and industrial production, such as seasoning preparation, drug preparation, chemical raw material preparation, etc. Simple liquid material preparation tasks can be prepared by manually taking the required amount of liquid. For example, in the field of cooking, chefs need to measure the appropriate amount of oil, soy sauce, vinegar, etc. according to the needs of different dishes. Whether the amount of these liquid seasonings is appropriate has a great impact on the dishes being cooked: excessive use of seasonings will be harmful to human health. Harmful, and insufficient use of seasoning will affect the taste of meals. At present, with the continuous improvement of the automation level...

AI Technical Summary

Problems solved by technology

[0003] A large number of experiments and practice have proved that the batching equipment that uses a fixed negative pressure value to batch liquid has at least the following shortcomings: the selection of the negative pressure is difficult to accurately grasp, and it is difficult to control

When the pre-set negative pressure of the entire liquid feeding and dosing device is too small, the liquid seasoning is extracted from the liquid material bottle through a small negative pressure, the speed of the liquid seasoning flowing in the pipeline is relatively slow, and the pipeline through which the liquid passes There may also be a certain amount of liquid remaining on the inner wall of the pipeline, which affects the accuracy of the amount of liquid extracted

In addition, when the pressure of the negative pressure is set too high, although the speed of extracting the liquid seasoning is very fast, because the flow rate of the liquid seasoning in the pipeline is too fast, the liquid seasoning will directly and quickly rush into the buffer bottle module of the device In the process, the liquid splashes everywhere on the four walls of the buffer bottle, and even makes the splashed liquid enter the air source device that generates negative pressure along the ventilation pipe

[0004] To sum up, in the prior art, in the process of absorbing and quantifying liquid ingredients by a cooking ingredient machine or an automatic cooking machine through a fixed negative pressure value, there is a problem that the amount taken is not accurate enough; in addition, when the negative pressure value is preset When the setting is too large, it is easy to damage the air source device, which is not conducive to the life and reliability of the entire device

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