4results about How to "Short breaking time" patented technology

This utility model relates to a double-acting arc-extinguishing chamber based on ball screw transmission, including a housing, a moving contact and a stationary contact disposed within the housing, a ball screw rotatably disposed within the housing, a first fixed block fixedly connected to the moving contact, and a second fixed block fixedly connected to the stationary contact. One end of the ball screw is connected to a drive device. The ball screw has a first threaded section and a second threaded section with opposite directions of rotation. The first fixed block is threadedly connected to the first threaded section, and the second fixed block is threadedly connected to the second threaded section. A first guide rail is fixedly disposed on the housing, slidingly engaging with the first fixed block, and a second guide rail is slidably engaged with the second fixed block. This utility model, through ball screw transmission, converts rotational motion into linear motion of the first and second fixed blocks, realizing the opposite or opposite movements of the moving and stationary contacts, improving the closing and opening speeds of the arc-extinguishing chamber, shortening the breaking time, and effectively improving the breaking capacity of the circuit breaker.

The present invention relates to an arc extinguishing chamber and a tank type circuit breaker. The arc extinguishing chamber comprises: a moving contact assembly, comprising a moving contact seat and a nozzle, wherein the nozzle can reciprocate in the moving contact seat; a stationary contact assembly, comprising a stationary contact seat, a stationary support seat and a stationary arc contact, wherein the stationary arc contact is guided and slidably assembled in the stationary contact seat, and a rotating shaft is provided on the inner side wall of the stationary support seat; a connecting rod mechanism, comprising a moving end connecting rod, a stationary end connecting rod and a rotating arm, wherein the rotating arm is rotatably assembled on the rotating shaft, and wherein the rotating arm has a long section and a short section, wherein one end of the moving end connecting rod is hinged on the nozzle, and the other end of the moving end connecting rod is hinged on the long section, one end of the stationary end connecting rod is hinged on the stationary arc contact, and the other end of the stationary end connecting rod is hinged on the short section; a plane passing through the center line of the stationary contact seat and parallel to the hinge axis of the moving end connecting rod and the long section is defined as a reference plane, wherein the rotation axis of the rotating arm and the hinge axis of the stationary end connecting rod and the short section are on the same side of the reference plane.

The utility model discloses a wall breaking device for rose essential oil extraction pretreatment, which comprises a driving assembly, and the driving assembly comprises a wall breaking outer frame, a motor arranged on the bottom surface of the wall breaking outer frame and a driving gear disc connected to the output end of the motor; the uniform wall breaking assembly comprises a first gear disc meshed with the driving gear disc, a rotating shaft for connecting the first gear disc with the wall breaking outer frame, a second gear disc meshed with the driving gear disc, a third gear disc combined with the driving gear disc, and a first long shaft fixed at the top end of the first gear disc. Through the mutual cooperation of the driving assembly and the uniform wall breaking assembly, discs with different diameters are driven by the motor and the driving gear disc to rotate for different turns in the wall breaking process, the wall breaking mixing uniformity is improved by utilizing the wall breaking turn number difference, wall breaking can be carried out at one time, grading positive and negative rotation is not needed, and the efficiency is high. The wall breaking time is shortened, and the wall breaking efficiency is improved.

The invention discloses a purification method of Eimeria stigganii sporozoites, which comprises the following steps: carrying out dissection detection to obtain lesion rabbit livers, and obtaining Eimeria stigganii oocysts; carrying out sporulation treatment to obtain a potassium dichromate sporulation oocyst suspension; adding sodium hypochlorite into the precipitate, and blowing and beating on ice; taking upper-layer floating foam and liquid after centrifugation, adding clear water, and centrifuging to obtain clean sporulated oocysts; adding glass beads for grinding and carrying out oscillation treatment; carrying out primary centrifugation, absorbing supernatant liquid, adding 50% percol liquid, and carrying out secondary centrifugation; adding a decapsulation buffer solution into the precipitate, and carrying out water bath digestion treatment for a certain time; and carrying out primary centrifugation on the digested suspension, taking the precipitate, adding a 55% percol solution, carrying out secondary centrifugation, taking the precipitate, diluting, fixing the volume, and naturally filtering to obtain the clean Eimeria stigmas sporozoites. The method has the remarkable effects of simplicity in operation, low cost, high sporozoite yield and time saving in the purification process.