High-Speed Pulp Stirring Cooling for Heat-Sensitive Slurries
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Solution Overview
Problem
Traditional pulp mixing and stirring equipment under high-speed stirring generates intense friction, leading to high temperatures in the stirring cavity, which can cause activity failure of the pulp if the raw materials lack heat resistance, thereby limiting the types of pulp that can be used and reducing versatility.
Innovation Solution
A pulp preparing device equipped with a pulp mixing tank and a pulp stirring assembly, featuring a stirring heat-dissipation assembly with first and second stirring heat dissipation members located in the liquid accommodating cavity and pulp dispersing cavity respectively, to absorb and dissipate heat effectively, thereby improving heat-dissipation efficiency during stirring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed stirring is used to mix pulp, then mixing efficiency is improved, but temperature increases causing activity failure
Solution Approach 1:
A water-cooling assembly is introduced as an intermediary cooling medium between the stirring system and the pulp. The cooling assembly includes a water supply component that sprays cooling water onto the stirring blade and a water collection component that collects the heated water, creating a thermal barrier that protects the pulp from excessive heat while maintaining high-speed stirring efficiency
Solution Approach 2:
The stirring blade is designed with asymmetric cooling water spray holes that are positioned and oriented to maximize cooling effectiveness on the blade surface that contacts the pulp. The spray holes are asymmetrically distributed to target specific high-heat-generation areas during stirring operation
2Productivity
If high-speed stirring is used to mix pulp, then mixing efficiency is improved, but versatility is reduced due to heat sensitivity
Solution Approach 1:
The water-cooling assembly serves as a protective intermediary that enables high-speed stirring to be applied to heat-sensitive pulp types. By actively removing heat during the mixing process, the system can handle a broader range of pulp materials including those with low heat resistance, thereby improving versatility without sacrificing mixing efficiency
Solution Approach 2:
The system dynamically controls the cooling parameters (water flow rate, spray pressure, temperature) to adapt to different pulp types and mixing requirements. This parameter adjustability allows the same high-speed stirring system to effectively process various pulp materials with different thermal sensitivities, enhancing overall system versatility
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 device effectively improves the heat-dissipation efficiency of the pulp during stirring, allowing for the quick dissipation of heat and preventing activity failure, thus enhancing the versatility of the pulp mixing and stirring process.
Implementation Method 1
The pulp preparing device comprises a pulp mixing tank and a pulp stirring assembly... the pulp preparing device comprises a stirring heat-dissipation assembly; the stirring heat-dissipation assembly comprises a first stirring heat dissipation member and a second stirring heat dissipation member... so as to dissipate heat of pulp
Data Source
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AI summary
The present disclosure provides a pulp preparing device 10 and a high-speed pulping machine. The pulp preparing device comprises a pulp mixing tank 100 and a pulp stirring assembly. The pulp stirring assembly comprises a pulp stirring shaft and a high-speed pulp stirring component. The pulp preparing device comprises a stirring heat-dissipation assembly. The stirring heat-dissipation assembly comprises a first stirring heat dissipation member 310 and a second stirring heat dissipation member 320, the first stirring heat dissipation member is located in the liquid accommodating cavity to dissipate heat of pulp in the liquid accommodating cavity, and the second stirring heat dissipation member is located in the pulp dispersing cavity to dissipate heat of pulp in the pulp dispersing cavity. The pulp stirring shaft drives the high-speed pulp stirring component to rotate at a high-speed for high-speed stirring of the raw materials. The heat of the obtained pulp is absorbed by the first stirring heat dissipation member and the second stirring heat dissipation member, which facilitates multi-level heat-dissipation of the pulp, so that the heat in the prepared pulp is rapidly dissipated, and the heat-dissipation efficiency of the pulp during stirring is effectively improved.