62results about How to "Flexible and easy to operate" patented technology

A flexible apparatus for locating and clamping a thin-wall workpiece with 3D shaped surface at multiple points is composed of two rectangular frames linked by scrwe bolts and with the regulating screws on their four sides, 4 lines X6 columns elastic sleeve tubes arranged uniformly on the netted structure in said frame and two barrier plates parallel in said frames and with regulating screws, locating pins and 4 locking tensional plates.

The invention relates to a method of simultaneously producing dimethyl succinate (DMS) and 1, 4-butyl glycol. The method can also be used to simultaneously produce at least one of Tetrahydro furan (THF) and gamma-irradiation butyl lactone (GBL). In the invention, dimethyl maleate (DMM) is used as raw materials and contacts with hydrogen under the condition of gas phase in a low pressure reaction district and a middle pressure reaction district respectively. A low-pressure reactor and a middle-pressure reactor are equipped with a catalyst. DMS products are produced in the low pressure reaction district and 1, 4-butyl glycol products are produced in the middle pressure reaction district. Simultaneously, at least one of the GBL and THF can be produced in the middle pressure reaction district. Purity of DMS can reach over 99.5% without refining through using a gas-liquid separator. In the invention, the method is used in mild condition; heavier component does not need to be circulated; operation is simple; transesterification type polymerization and other side reactions are greatly reduced in a system.

The invention discloses a split type universal reset stirring shaft device. The split type universal reset stirring shaft device comprises a first stirring shaft core (2), a second stirring shaft core (3), a stirring shaft sleeve (4), a first driving plate (5) and a second driving plate (6). The first stirring shaft core (2) is provided with first limiting blocks (21), first limiting grooves (22) and second limiting grooves (23), and the second stirring shaft core (3) is correspondingly provided with second limiting blocks (31), third limiting grooves (32) and fourth limiting grooves (33). The first driving plate (5) is provided with first protruding blocks (52), and the second driving plate (6) is correspondingly provided with second protruding blocks (62). The first stirring shaft core (2) and the second stirring shaft core (3) are installed at the two ends of the stirring shaft sleeve (4), stirring shaft sleeve limiting blocks (41) are correspondingly matched with the second limiting grooves (23) and the fourth limiting grooves (33), the first protruding blocks (52) of the first driving plate (5) are inserted from first inserting grooves (42) and matched with the first limiting grooves (22), and the second protruding blocks (62) of the second driving plate (6) are inserted from second inserting grooves (43) and matched with the third limiting grooves (32). After the structure is adopted, the split type universal reset stirring shaft device has the advantages of being simple and reasonable in structure, flexible and convenient to operate, capable of maintaining the stirring shaft cores in the initial perpendicular or horizontal state and the like.