3results about How to "Stable injection pressure" patented technology

This utility model relates to the field of water-jet looms and discloses a nozzle structure for a polyester water-jet loom, including a limiting ring fixed to the outer wall of the nozzle body. The limiting ring has several receiving holes, and the inner wall of each receiving hole has a receiving groove. A magnet is fixed to the inner wall of the receiving groove. A fixing cover is provided at one end of the nozzle body, and the fixing cover has a through hole corresponding to the nozzle body. Several L-shaped retaining strips are fixed to the fixing cover, and these L-shaped retaining strips are magnetically attracted to the magnet. In this utility model, through the synergistic action of the receiving groove, magnet, fixing cover, and L-shaped retaining strips, the nozzle core can be axially limited and circumferentially locked under the action of the pressing ring, ensuring greater stability of the nozzle core within the inner wall of the nozzle body. This effectively prevents the fixing cover from rotating due to vibration and avoids the risk of the nozzle core falling out of the nozzle body.

The invention relates to the technical field of medical instruments, and discloses a brain glioma virus slow-release injection device which comprises a slow-release injection cylinder, a sliding cavity is formed in the slow-release injection cylinder, the left side face of the slow-release injection cylinder is communicated with a conical cover, the left side face of the conical cover is communicated with an injection pipe, and the injection pipe is communicated with a sliding cavity. And the left side surface of the injection tube is communicated with a conical injection head. According to the brain glioma virus slow-release injection device, a slow-release control device is arranged, an annular handle is used for driving an annular rotating plate to rotate, a rotating screw rod is driven to rotate through meshing transmission of a fixed rack and a rotating gear, then a vertical sliding block is driven to slide along a guide sliding rod, and a pressing transverse block is driven to move up and down through a linkage rod and a linkage support; the extrusion degree of the injection tube is adjusted, so that the release rate of a virus preparation is accurately controlled, flexible adjustment can be achieved according to the tumor condition of a patient, individualized treatment requirements are met, and the problem that the release rate of an existing device cannot be adjusted is solved.

The utility model relates to the technical field of movable mold inserts, and discloses a movable mold insert ejection mechanism of an integrated gradient cooling channel, which comprises an insert I, the left end of the insert I is connected with an insert II through a sliding tenon, the bottom ends of the insert I and the insert II are both fixedly connected with positioning rods, the bottom ends of the insert I and the insert II are fixedly connected with a fixing assembly, and the fixing assembly is fixedly connected with the left end of the insert I and the right end of the insert II. A movable mold body is arranged on the outer wall of the positioning rod, the inner wall of the movable mold body is connected with the first insert and the second insert through a jacking assembly, and a grouting pipe is fixedly connected to the middle of the inner wall of the movable mold body. According to the utility model, through the design of the threaded sleeve, the threaded rod and the ejector plate, the first insert and the second insert can be jacked, the first insert and the second insert can be separated in cooperation with a modular connection structure of the sliding tenon, and the first sealing ring and the second sealing ring can be used for preventing raw materials from leaking out from a pipeline joint, so that the injection molding pressure is stabilized; and waste products caused by insufficient mold filling are reduced.