7results about How to "Prevent dislocation" patented technology

This utility model relates to the field of valve pressure testing technology and discloses a pressure testing device for ball valve testing. The device includes a base, a testing component on the top of the base, a ball valve body on the top of the base, and a clamping component on the top of the base. In this device, the outer wall of a conical sleeve is interference-fitted with the ball valve body to achieve installation. The conical sleeve has a self-centering function; its conical outer contour guides the ball valve to automatically center and align, eliminating manual alignment and repeated adjustments, significantly improving clamping efficiency before pressure testing. It automatically adapts to pipes with different inner diameters, allowing the device to accommodate welded or flanged ball valves. The support rod abuts against the bottom of the ball valve body, providing vertical upward support and preventing the ball valve from sliding or dislodging due to water or air pressure impact during pressure testing, thus improving clamping accuracy and structural stability.

A double seal ring connector comprises: a first elastic seal ring; a second elastic seal ring partially embedded in the first elastic seal ring; characterized in that the double seal ring connector comprises a receiving part and an insertion part; the shape of the insertion part corresponds to the receiving part and is fitted into the receiving part; the insertion part comprises a joint, a connecting rod and a locking boss; the connecting rod extends in a radial direction, an axial direction or a circumferential direction; the joint is arranged at the end of the connecting rod and is mirror symmetric along its symmetry axis; the locking boss is arranged on both sides of the connecting rod and is spaced a distance from the connecting rod; the locking boss extends in the same direction as the connecting rod, and the length of the locking boss in the extension direction is less than 2 / 3 of the sum of the lengths of the joint and the connecting rod in the extension direction of the connecting rod.

The application discloses a kind of MOCVD preparation method and device of wafer level single crystal molybdenum disulfide;The preparation method uses six carbonyl molybdenum Mo (CO) 6 and liquid carbon disulfide CS2 as molybdenum source and sulfur source respectively, different from traditional MOCVD growth process, precursor used in the application does not contain hydrogen element, avoid the side effect caused by hydrogen element, and increase the pre-reaction of source cracking, by introducing oxygen, generate intermediate product molybdenum trioxide (MoO3) and sulfur element (S) in pre-reaction chamber, to the reaction chamber on the substrate surface deposition, effectively avoid the introduction of carbon impurities, realize the nucleation and epitaxial growth of single crystal orientation on the substrate surface, obtain high uniformity and continuity single crystal molybdenum disulfide film, realize 6 inch and above size single crystal wafer scale preparation, meet the key needs of high density, high performance electronic device integration.

This utility model discloses an anti-seismic and anti-detachment hook assembly for underground utility tunnels, specifically relating to the technical field of hook assembly components. It includes a first mounting base, a first movable platform on the outer side of the first mounting base, first limiting rods fixed to the front and rear ends of the first movable platform, a limiting frame fixed to the outer side of the first movable platform, a movable block for positioning the pipeline slidably connected to the inner side of the limiting frame, a second limiting rod on the outer side of the movable block, the second limiting rod slidably connected to the limiting frame, and a damper body installed on the inner side of the movable block. This utility model uses a first movable platform, first limiting rods, and limiting plates in conjunction with first and second sliding grooves to move multiple support plates, adjusting the orientation of the support plates. The first movable platform and limiting frame, in conjunction with first threaded rods and second limiting rods, drive the movable block and damper body to move, allowing the support plates to contact the utility tunnel pipeline. The damper body and support springs provide shock absorption, and multiple sets of support plates protect the pipeline.

A steering wheel that suppresses light leakage emitted from a light guide member, the steering wheel comprising: a light source; a light guide member having a light passage portion having a first emission surface formed at its end, through which light output from the light source is guided to emit light from the first emission surface; a transmission suppression portion covering the side of the light passage portion to suppress light transmission; and a lens member receiving emitted light and having a second emission surface that emits the emitted light outward. In a radial cross-section of the steering wheel, the position of the first emission surface along the optical axis of the emitted light is further away from the intersection of the second emission surface and the optical axis than the position of the end of the transmission suppression portion along the optical axis, i.e., the end of the lens member, in the optical axis direction of the optical axis direction.

This invention provides an endoscope steering mechanism and an endoscope, belonging to the field of endoscope technology. It includes: a base with at least one set of output channel groups, each output channel group comprising two output channels; rotating members, the number of which is the same as the number of output channel groups, the rotating members being rotatable relative to the base; and synchronous belts, the number of which is the same as the number of output channel groups, the middle portion of the synchronous belts engaging with the rotating members, the rotating members driving the synchronous belts to move, and two output members connected to each end of each synchronous belt, each output member being located in each of the output channels and being slidable along the length of the output channel. The beneficial effect of this invention is that by engaging the synchronous belts with the rotating members and driving the output members at both ends to slide synchronously in opposite directions within the output channels, high-precision bidirectional traction control is achieved.

This invention belongs to the field of calcium carbonate processing technology, specifically a carbonation tower for processing nano-calcium carbonate. It includes a U-shaped base; a tower body located within the opening of the U-shaped base; a complex mixing device mounted on the U-shaped base; the complex mixing device includes rotating shafts installed on opposite sides of the U-shaped base; the opposite ends of the two rotating shafts are connected to the outer wall of the tower body; a pressure-bearing circular plate located inside the U-shaped base; the pressure-bearing circular plate is located at the bottom of the tower body, and the two are in contact; and a pressure-relieving and energy-delaying mechanism is mounted on the pressure-bearing circular plate. This allows the gas and liquid to continuously oscillate left and right within the tower body, constantly dispersing their distribution, avoiding dead zones during stirring, and preventing material agglomeration and density stratification. The constantly changing positions of the gas and liquid within the tower body facilitate stirring and enhance gas-liquid contact, not only improving the production quality of calcium carbonate but also further reducing the application limitations of the carbonation tower.