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A non-contact liquid filling method for controlling liquid level

A non-contact, liquid control technology, applied in automatic control of packaging, liquid materials, packaging, etc., can solve problems such as inability to accurately control liquid level height, and achieve the effect of ensuring accuracy, eliminating influencing factors, and ensuring accuracy and consistency

Active Publication Date: 2022-05-13
安徽沛愉包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the existing filling method cannot accurately control the height of the liquid level, the present invention provides a non-contact liquid filling method for controlling the liquid level. Through this method, when filling liquid materials, when the liquid level in the filled container After rising to the height where the measuring tube extends into the nozzle, it will cause the change of the internal pressure of the measuring tube, thereby triggering the signal, so as to control the filling action and ensure that the liquid level of the filled liquid material in all containers is the same. Consistent, to achieve the effect of precise control of the height of the filling liquid

Method used

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  • A non-contact liquid filling method for controlling liquid level
  • A non-contact liquid filling method for controlling liquid level
  • A non-contact liquid filling method for controlling liquid level

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 1 As shown, the non-contact liquid filling control method of this embodiment includes the following steps:

[0059] S1. Insert a measuring conduit 20 into the container to be filled, and the nozzle is located at a specified height in the container to be filled;

[0060] S2. When filling, obtain the pressure change in the measuring conduit 20 caused after the filled liquid material reaches the specified height of the filled container;

[0061] S3. After the pressure change reaches the set value, a signal is sent to stop filling.

[0062] Due to the inevitable errors in the cavity structure of the filled container, especially the glass and ceramic containers, the error is greater, and the traditional filling device can only achieve accurate control of the flow rate, and cannot vary the volume. The container is filled with high consistency of liquid level. The existing filling method to control the high consistency of liquid level is to use photoelectric s...

Embodiment 2

[0075] Such as figure 1 As shown, the non-contact liquid filling method of this embodiment is further improved on the basis of Embodiment 1, and further includes:

[0076] S4. After the filling is stopped, use the measuring conduit 20 to draw liquid, so that the liquid level of the liquid material in the container to be filled is reduced to a height equal to the mouth of the nozzle.

[0077] Through the method of Example 1, after the filling is completed, the liquid level in each container on the same assembly line can be basically guaranteed to be equal, but there are two factors that may cause height errors: one is when the filling is stopped, the unfinished liquid The material continues to fall, and an error will be generated at this time. The second is that the increase in the liquid level in the period from the time when the liquid level of the filling liquid material is in place to the triggering of the pressure sensor will cause an error. In theory, when the parameters ...

Embodiment 3

[0082] The non-contact liquid filling method of this embodiment is further improved on the basis of Embodiment 2. After the height of the measuring conduit 20 is set, its position is fixed, and the nozzle is controlled by moving and lifting the filled container. The height within the container being filled.

[0083] In this embodiment, the height of the measuring conduit 20 is fixed after being determined. When filling each time, the container to be filled is moved to directly below the measuring conduit 20, and then the container to be filled is raised so that the measuring conduit 20 The relative height in the filling container is consistent with the previous relative height, thereby ensuring accurate and consistent control of the liquid level for each filling.

[0084] For the method of the present application, since the measuring conduit 20 and a series of devices connected to it are relatively bulky in structure compared with the container to be filled, it is not appropri...

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Abstract

The invention discloses a non-contact liquid filling method for controlling liquid level, which belongs to the technical field of filling. It includes the following steps: S1, inserting a measuring conduit into the container to be filled, and the nozzle is located at a specified height in the container to be filled; S2, during filling, obtaining the temperature caused by the filling liquid material reaching the specified height of the container to be filled Measure the pressure change in the conduit; S3, send a signal to stop filling after the pressure change reaches the set value; S4, use the measuring conduit to pump liquid after stopping filling, so that the liquid level of the liquid material in the filled container drops to the level of the nozzle Qi height. Through the method of the present invention, when filling liquid materials, when the liquid level in the container to be filled rises to the point where the measuring conduit extends into the nozzle, the pressure in the measuring conduit will change, thereby triggering a signal to control the filling. The filling action ensures that the liquid levels of the filled liquid materials in all containers are consistent, achieving the effect of accurately controlling the filling liquid level.

Description

technical field [0001] The invention belongs to filling technology, and more specifically relates to a non-contact liquid filling method for controlling liquid level. Background technique [0002] In the hydration production line of the beverage industry, when it comes to the packaging of liquids, most of them use filling valves for filling. The accuracy requirements of the filled liquid level height are getting higher and higher, and many users have put forward requirements for the consistency of the liquid level height after liquid filling, which is a challenge for the traditional filling method. [0003] Among the existing liquid filling methods, most manufacturers use mechanical filling valves to fill liquids. This filling method is popular because of its low cost and convenient processing. However, the filling accuracy of mechanical valves is poor, and the filling The volume is difficult to control, and the valve closing process takes a long time, which is likely to ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B3/30B65B57/00
CPCB65B3/30B65B57/00
Inventor 彭跃猛
Owner 安徽沛愉包装科技有限公司
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