Pneumatic Pet Food Ejector With Channel Cleaning

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing pet food ejectors using elastic elements for power generate noise and are prone to contamination and gear jamming due to food debris, affecting their service life.

Innovation Solution

A pneumatic food ejector using air pressure for power, eliminating elastic elements and gears, with an integrated cleaning mechanism to prevent debris accumulation and enhance service life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If elastic elements (compression springs) are used as the power source for food ejection, then the device can achieve food ejection function, but it generates relatively high noise during operation

Engineering Contradiction:

Improvefood ejection capabilityVSAvoidnoise

Core Design Contradiction:

PowerVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the traditional mechanical elastic element-based ejection system with a pneumatic system that uses compressed air to eject food. The pneumatic ejection device includes an air chamber, air outlet, and control valve, which eliminates the noise generated by spring compression and gear mechanisms while maintaining effective food ejection capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs pneumatic principles by using compressed air stored in an air chamber to power the food ejection process. The control valve regulates air flow to the ejection mechanism, providing a quiet and reliable power source that avoids the harmful noise associated with mechanical spring-based systems.

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Duration of action of moving object

If gear mechanisms are used to coordinate the resetting of elastic elements, then the device can achieve cyclic operation, but food crumbs and impurities accumulate within the gear structures, adversely affecting service life

Engineering Contradiction:

Improvecyclic operation capabilityVSAvoidservice life

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The patent removes the gear mechanisms entirely from the system by adopting a pneumatic ejection design. The pneumatic system uses air pressure to directly eject food and automatically reset the ejection mechanism without requiring any moving gears or mechanical linkages, thereby eliminating the problem of food debris accumulation and extending service life.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical gear-based resetting system with a pneumatic system that uses controlled air pressure to achieve cyclic operation. The control valve manages the air flow to enable repeated ejection cycles without any mechanical gears, preventing food crumb accumulation and maintaining high reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Volume of moving object

If elastic elements are used as the power source, then the device can achieve compact design, but the service life is reduced due to contamination and gear jamming

Engineering Contradiction:

Improvedevice compactnessVSAvoidservice life

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent replaces the mechanical elastic element and gear system with a pneumatic system that achieves both compactness and reliability. The pneumatic ejection device with its air chamber and control valve occupies minimal space while eliminating the reliability issues associated with food contamination of mechanical components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses pneumatic technology to create a compact ejection mechanism that relies on compressed air rather than mechanical springs and gears. This pneumatic approach maintains a small device footprint while significantly improving service life by eliminating the contamination and jamming problems inherent in mechanical systems.

Inventive Principle:

Principle #29Pneumatics and hydraulics

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

The pneumatic design reduces noise and prevents gear jamming, improving the service life and user experience by effectively cleaning the ejection channel.

Implementation Method 1

A pneumatic food ejector using air pressure for power

Methodology Applied

Scientific EffectAir pressure: Pressure Increase

Implementation Method 2

the cleaning device is configured to clean the ejection channel by directing a stream of gas therethrough

Methodology Applied

Scientific EffectGas stream flow: Fluid Spray

Data Source

PatentUS20260013465A1Pneumatic food ejector

Publication Date: 2026.01.15 NINGBO XINHE HLDG

AI summary

A pneumatic food ejector is provided in the field of pet devices. The ejector includes a housing and, installed within the housing, a feeding device, a pneumatic ejection device, a cleaning device, an ejection channel, and a controller. The feeding device delivers food into the ejection channel. The pneumatic ejection device ejects the food in the ejection channel out of the housing. The cleaning device cleans the ejection channel. The controller is connected to the pneumatic ejection device and to the cleaning device. This design addresses the technical problem in the prior art that, when using the potential energy of an elastic element as the power source for ejecting food, food debris easily affects the service life of the ejector.