Rotatable Mixing Container With Static Seals and Internal Discharge

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Solution Overview

Problem

Existing rotary mixers have poor sealing performance due to friction-based sealing elements, especially in large-sized mixers, and discharge tools external to the mixer complicate cleaning and washing.

Innovation Solution

A mixing device with a rotatable container featuring a one-piece structure of the driving cover and mixing container cover, synchronized rotation, and an internal discharge and sealing mechanism, including a piston for closing and opening the material outlet, ensuring a closed environment for mixing and discharge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If friction-based sealing elements are used between the mixer and cover, then the sealing element can be easily replaced, but the sealing performance is poor

Engineering Contradiction:

Improvesealing element replaceabilityVSAvoidsealing performance

Core Design Contradiction:

Ease of repairVSReliability

Solution Approach 1:

The sealing system is segmented into multiple sealing elements positioned at different locations (first sealing element between driving cover and fixed container, second sealing element between mixing container cover and mixing container, third sealing element between piston and mixing container). This segmentation allows each sealing element to be independently replaced while maintaining overall sealing performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Sealing elements are introduced as intermediary components between moving and stationary parts. The first sealing element mediates between the driving cover and fixed container, the second sealing element mediates between the mixing container cover and mixing container, and the third sealing element mediates between the piston and mixing container wall, providing reliable sealing while maintaining replaceability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If external discharge tools are arranged on the discharge path, then materials can be discharged, but cleaning or washing requirements cannot be fulfilled

Engineering Contradiction:

Improvematerial discharge capabilityVSAvoidcleaning accessibility

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

Instead of having external discharge tools, the discharge mechanism is inverted and placed inside the mixing container. The piston moves linearly inside the mixing container to discharge materials directly from the container interior, eliminating the need for external discharge tools and enabling complete cleaning of the discharge path.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The internal discharge mechanism allows the mixing container to serve its own discharge function without requiring separate external tools. The piston, moving within the mixing container, enables the container to discharge materials on its own, simplifying the overall structure and improving cleanability.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If a piston is arranged inside the mixing container to open or close the material outlet, then discharge control is improved, but the piston must rotate synchronously with the mixing container during rotation

Engineering Contradiction:

Improvedischarge controlVSAvoidpiston rotational synchronization

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The piston is merged with the driving cover through a connecting structure, forming an integrated assembly. When the driving cover rotates synchronously with the mixing container, the piston automatically rotates with it. This merging eliminates the need for separate rotational synchronization mechanisms while maintaining discharge control capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The piston serves multiple functions: it controls material discharge by moving linearly to open/close the outlet, and it simultaneously rotates synchronously with the mixing container during rotational operation. This multi-functionality reduces the need for additional components and simplifies the overall system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12478933B2Mixing device with rotatable container

Publication Date: 2025.11.25 SHANGHAI CHAMPION TECHNOLOGY CO LTD

AI summary

A mixing device with rotatable container, which can simultaneously meet the sealing, material mixing and cleaning requirements of large-sized mixers, includes a fixed container having a top opening; a mixing container having a top opening and a bottom material outlet, rotatably connected to and positioned inside the fixed container; a driving cover configured to open or close the top opening of the fixed container; a mixing container cover integrally and coaxially arranged with the driving cover and to rotate relative to the driving cover, configured to open or close the top opening of the mixing container and to rotate synchronously with the mixing container after the mixing container is covered by the mixing container cover; and a discharge and sealing mechanism arranged coaxially with the driving cover to form an integral body, and configured to open or close the material outlet from inside.