A continuous sand mixer for steam turbine shell casting and a processing technology thereof
By combining airflow grading and adjustment mechanisms, the problems of low sand mixing efficiency and uneven binder caused by the difference in particle size of coarse and fine raw sand in the casting of steam turbine shells were solved, achieving a highly efficient sand mixing process and uniform binder distribution.
CN117531953BActive Publication Date: 2026-08-04NINGBO FENGHUA SANDING ALLOY STEEL CASTING CO LTD
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Patent Information
- Application Number
- CN202311440232.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-01
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2043-11-01
AI Technical Summary
Technical Problem
In existing continuous sand mixers for casting steam turbine casings, the particle size difference between coarse and fine raw sand is large, resulting in low sand mixing efficiency and uneven distribution of binder.
Method used
The raw sand is classified by an airflow classification mechanism, and coarse and fine raw sand particles are injected into the mixing tank respectively. The motor power is adjusted according to the composition of the raw sand by an adjustment mechanism to achieve graded sand mixing.
Benefits of technology
It improves sand mixing efficiency, ensures uniform distribution of binder in molding sand, and reduces the operating power requirements of the sand mixer.
✦ Generated by Eureka AI based on patent content.
Abstract
The present application relates to steam turbine shell casting equipment technical field, and disclose a kind of steam turbine shell casting with continuous sand mixer and its processing technology, the steam turbine shell casting with continuous sand mixer includes sand mixing tank and raw sand tank, also includes airflow classification mechanism and sand mixing mechanism, sand mixing mechanism is set in sand mixing tank, the raw sand in raw sand tank is classified after being classified by airflow classification mechanism to granularity, first, coarse-grained raw sand is injected into sand mixing tank, then, fine-grained raw sand is injected into sand mixing tank, and classified sand mixing is carried out by sand mixing mechanism;Airflow classification mechanism includes classification cylinder;The steam turbine shell casting with continuous sand mixer and its processing technology, before raw sand is injected into sand mixing tank, coarse-grained raw sand and fine-grained raw sand are divided to raw sand by airflow classification, and the way of coarse-grained raw sand sand mixing first and then fine-grained raw sand sand mixing makes that sand mixing efficiency is improved and binder distribution is more uniform.
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