4results about How to "Flexible production" patented technology

This invention discloses a mine backfill cementitious material and its preparation method. The mine backfill cementitious material of this invention comprises the following components in the following mass ratios: high belite sulfoaluminate cement clinker: 3-8 wt%; high free calcium silicate cement clinker: 1-3 wt%; granulated blast furnace slag powder or granulated blast furnace slag: 74-85 wt%; gypsum: 10-18 wt%. Compared with other paste-like backfill materials of the same strength, the cementitious material of this invention solves the problems of poor activation effect, poor mechanical properties affecting the mine backfilling effect, and high cost due to large amount of cementitious material used in existing mine backfill cementitious materials. At the same time, it not only reduces the proportion of cementitious material used, but also fully meets the requirements of mine backfilling projects.

This invention provides a nested, zoned, controlled vacuum insert for film-coated injection molds. A first cavity is provided on the core-side main insert, and an external vacuum insert is disposed within the first cavity. A first vacuum gap, communicating with the cavity, is formed between the outer wall of the external vacuum insert and the inner wall of the first cavity. A first air passage is provided on the external vacuum insert, communicating with the first vacuum gap to form an outer air passage. A second cavity is provided on the external vacuum insert, and an internal vacuum insert is disposed within the second cavity. A second vacuum gap, communicating with the cavity, is formed between the outer wall of the internal vacuum insert and the inner wall of the second cavity. A second air passage is provided on the internal vacuum insert, communicating with the second vacuum gap to form an inner air passage. A main air passage, communicating with an external vacuum device, is provided on the insert body. The first and second air passages are connected to the main air passage. The overall design of this invention is simple, with a reasonable distribution of adsorption force, and also incorporates the characteristics of flexible production.

This utility model relates to the field of flame-retardant glass production technology, specifically to a continuous production line and equipment for high flame-retardant fiberglass sheets. The production line has a raw material processing unit, a curing unit, and a post-processing unit arranged sequentially in the conveying direction. The raw material processing unit includes a fiber weaving device, and the curing unit includes a curing furnace and a steam furnace. In the conveying direction, the steam furnace is located downstream of the curing furnace. This production line allows raw materials to be mixed in the raw material processing unit, cured in the curing unit, and post-processed in the post-processing unit to directly obtain high flame-retardant fiberglass sheets, achieving continuous production. The fiber weaving device can adjust the product width and density online, enabling personalized customization and flexible production. The steam furnace can cross-link and cure the inorganic resin in the raw materials, ensuring the stable quality of the high flame-retardant fiberglass sheets and improving production efficiency.