4results about How to "Prevent falling back" patented technology

The utility model provides a fractionating tower top diversion anti-corrosion device which is arranged at the top end of a fractionating tower body and comprises a diversion body and a connector, a liquid collecting tank and a supporting net are arranged in the diversion body, the supporting net is arranged above the liquid collecting tank, the supporting net is composed of a plurality of net layers, ceramic fibers are arranged between the net layers of the supporting net, and the connector is connected with the diversion body. A through hole communicated with the outside is formed in the bottom of the liquid collecting groove and connected with a liquid guide pipe, a drain valve is arranged in the liquid guide pipe, and a plurality of ammonia water injection openings are formed in the portion, above the supporting net, of the flow guide body. Therefore, the device has the advantages of collecting liquid acid condensed at the top of the tower due to low temperature, timely leading out the liquid acid at the top of the tower, preventing the inner wall of the fractionating tower from being corroded, and providing guarantee for the stability of a system in the fractionating tower.

The utility model discloses a connector which comprises a first shell and a second shell which can be assembled together, and in the state that the first shell and the second shell are assembled together, a columnar outer conductor of the first shell penetrates through a through hole of the second shell and extends into a second shell body. The first housing includes at least one recess formed concavely on an outer peripheral surface of the columnar outer conductor, and the second housing includes at least one elastic buckle formed at a perimeter of the through hole, the elastic buckle extending obliquely radially inward inside a second housing body, and the elastic buckle is attached to the first housing and the second housing in a state in which the first housing and the second housing are fitted together. The elastic buckles are clamped in the corresponding concave parts, and the front flat surface of the first shell main body and the rear flat surface of the second shell main body are in contact with each other. By means of the arrangement mode, the retention force between the first shell and the second shell can be improved, and the first shell is prevented from retreating and falling off after assembly.

The utility model discloses a combined type pole-mounted vacuum circuit breaker, and relates to the technical field of vacuum circuit breakers. Comprising a mechanism box, the outer wall of the top of the mechanism box is fixedly connected with an arc extinguish chamber, the outer wall of the arc extinguish chamber is fixedly connected with a current transformer, the switch device comprises a positioning frame, the inner wall of the positioning frame is rotatably connected with a wheel shaft, the outer wall of the wheel shaft is rotatably connected with an ejector rod, and the ejector rod is fixedly connected with the mechanism box. A knife switch is slidably connected to the outer wall of the top of the ejector rod, a connecting device is rotatably connected to the outer wall of the knife switch, and rotating frames are fixedly connected to the two ends of the wheel shaft. Through the arrangement of the connecting device and the arrangement of a compression spring and a limiting rod, the knife switch rotates around the fixing frame, it is ensured that circuit connection is stable and reliable, and meanwhile the installation process is simplified; the installation process of the knife switch is simplified, the installation time of the knife switch is saved, and stable circuit connection is ensured.

This invention provides an automatic stacking and storage device for battery cell casings: it includes a support frame and a storage component and a top component mounted on the support frame; the storage component includes two symmetrically arranged storage plates, each with a slot extending along its height and penetrating its upper and lower ends on one side wall facing each other, forming a receiving space between the two slots for stacking battery cell casings; the lower end of each storage plate has a radially extending through groove, within which a stop component is connected, the supporting end of which can extend or retract from the through groove; the top component pushes the battery cell casings upward into the receiving space of the storage component, and the stop component supports the bottom of the lowest battery cell casing within the receiving space to prevent it from falling back. This invention can automatically stack and store battery cell casings in the receiving space without manual operation, saving time and effort while being highly efficient.