Quantitative Liquid Discharge Device with Sliding Level Control

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Solution Overview

Problem

Existing methods for discharging liquid from large containers, such as aquarium tanks, require significant labor for monitoring and adjusting the discharge volume, leading to high labor costs and inefficiencies.

Innovation Solution

A quantitative liquid discharge device featuring a tubular discharge pipe with radial ports and a liquid level control rod, allowing for preset liquid level discharge without manual monitoring, utilizing a sliding positioning assembly to control the discharge ports and enable quantitative discharge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If automated discharge system is implemented, then labor cost is reduced, but device complexity increases

Engineering Contradiction:
Improveautomation of liquid dischargeVSAvoidcomplexity of discharge device
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The discharge pipe is segmented into multiple sections with different discharge ports at different heights. Each segment can independently control discharge at specific liquid levels, transforming a complex automated system into simple modular components that work together through gravity and buoyancy principles.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The floating ball automatically rises with liquid level and triggers discharge ports sequentially without external control. The system serves itself by using the liquid's own buoyancy force to activate the discharge mechanism, eliminating the need for motors, sensors, or control systems.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If multiple discharge ports are provided at different heights, then preset liquid level discharge is enabled, but device complexity increases

Engineering Contradiction:
Improvepreset liquid level discharge capabilityVSAvoidcomplexity of discharge pipe structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The discharge pipe is divided into multiple height-segmented sections, each with its own discharge port. This segmentation allows the single pipe structure to provide multiple preset discharge levels without requiring separate pipes or complex valve mechanisms for each level.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The discharge pipe system is made dynamic through the floating ball mechanism. As liquid level changes, the floating ball moves vertically and sequentially activates different discharge ports, enabling adaptable discharge at preset levels without static complex valve arrangements.

Inventive Principle:
Principle #15Dynamics

3Reliability

If full-discharge port is provided at lowest level, then complete liquid evacuation is achieved, but loss of substance increases when only partial discharge is needed

Engineering Contradiction:
Improvecomplete liquid evacuation capabilityVSAvoidunnecessary liquid discharge
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The discharge system is segmented into multiple height-based ports: full-discharge port at the lowest level and partial-discharge ports at higher levels. This segmentation allows selective activation of only the necessary discharge ports based on current liquid level, enabling complete evacuation when needed while preventing unnecessary discharge when only partial emptying is required.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different parts of the discharge pipe have different functional qualities - the lower section handles full discharge while upper sections handle partial discharge. Each local section is optimized for its specific function, allowing the system to adapt discharge quantity to actual needs and avoid loss of substance.

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables automated liquid discharge at preset levels, reducing the need for manual monitoring and minimizing labor costs by allowing operators to discharge liquid without continuous supervision.

Implementation Method 1

a floating ball is arranged inside the liquid discharge pipe

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

liquid in the liquid container can be discharged in different quantities according to different liquid levels

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP2851335B1Quantitative liquid discharge device capable of discharging liquid in container at preset liquid level
Publication Date: 2016.10.19 SHENZHEN XING RISHENG INDAL
  • EP2851335B1 patent drawingFigure 1
  • EP2851335B1 patent drawingFigure 2~3
  • EP2851335B1 patent drawingFigure 4~5

AI summary

Disclosed is a quantitative liquid discharge device capable of discharging liquid in a container at a preset liquid level. The device comprises a liquid discharge pipe (1), an outer sleeve (2) and a liquid level control rod (3). The liquid discharge pipe (1) is provided with a full-discharge liquid discharge port (10) and at least one internal defined-level liquid discharge port (11). Installed outside the liquid discharge pipe (1), the outer sleeve (2) is provided with external defined-level liquid discharge port (21). The wall of the liquid level control rod (3) is slidably sleeved between the wall of the liquid discharge pipe (1) and the wall of the outer sleeve (2). The liquid level control rod (3) is provided with a liquid guide port (32) passing through the wall thereof. A sliding positioning assembly is provided between the walls of the outer sleeve (2) and the liquid level control rod (3), and by means of the sliding positioning assembly, the liquid guide port (32) achieves liquid discharge at a defined liquid level, respectively between the pair of internal defined-level liquid discharge ports and the pair of external defined-level liquid discharge ports (11, 21). By operating the liquid level control rod (3) and setting the liquid level in the liquid container after discharge, the quantitative liquid discharge device can achieve liquid discharge, without specialized monitoring and control of the process of the liquid discharge, and has the advantages of quantitative liquid discharge and saving labour costs.