3results about How to "Prevent shake off" patented technology

The invention belongs to the field of environment and occupational health dust sampling, and relates to a dust sampler sampling head and a using method thereof, the dust sampler sampling head comprises a sampling head main shell, a filter membrane brake sealing ring, a filter membrane brake, a telescopic pressing sleeve, a spring, a sampling head air inlet end cover and other parts. Through a sliding mechanism of the telescopic pressing sleeve in the sampling head main shell, pressing sealing and quick dismounting of the filter membrane brake are realized; the operation convenience is remarkably improved, and the loss of dust in the dismounting process is reduced to the greatest extent, so that the sampling accuracy is improved; meanwhile, after the filter membrane is detached in the membrane replacement process, the telescopic pressing sleeve seals the filter membrane brake clamping groove of the sampling head main shell under the action of the spring, so that dust is prevented from falling into and damaging a sampling pump of the sampler. Besides, filter screens are ingeniously arranged on the filter membrane gate and the sampling head air inlet end cover, so that the impact of overlarge particles on the filter membrane is effectively prevented, the damage of the filter membrane is avoided, and the sampling stability and reliability are further improved.

This utility model discloses a glue dispensing device, relating to the field of semiconductor testing dotting equipment technology. The glue dispensing device includes a support base, a glue dispensing ink fountain, a drive mechanism, and a limiting member. One side of the support base is the mounting side. The glue dispensing ink fountain includes a mandrel and an ink tank, with the ink tank mounted on the mounting side. A receiving cavity is formed within the ink tank, and the mandrel passes through the receiving cavity, with both ends extending from the two ends of the ink tank. The drive mechanism is mounted on the mounting side and located at one end of the ink tank. The drive mechanism includes a drive component and a transmission shaft, with one end of the transmission shaft connected to the mandrel. The drive component drives the transmission shaft to move, thereby moving the mandrel relative to the ink tank. A glue dispensing port is provided at the end of the ink tank near the drive mechanism. The limiting member is located on the mounting side and can move relative to the support base. The limiting member abuts against the end of the transmission shaft away from the mandrel. This glue dispensing device allows for rapid glue replenishment after use and provides more reliable dotting quality.

The utility model discloses a hollow building block carrying device which comprises a bottom plate, a back plate is fixedly connected to the front side wall of the bottom plate, a handle is fixedly connected to the front side wall of the back plate, a supporting column is fixedly connected to the top of the bottom plate, an electric rod is arranged in the supporting column, and the bottom of the electric rod is fixedly connected with the bottom plate. The number of the supporting columns and the number of the electric rods are both four, the supporting columns and the electric rods are evenly distributed at the four corners of the top of the bottom plate, and the front side walls of the front two supporting columns are fixedly connected with the back plate. Through the structure, the top frame, the lower side plate, the lower rear plate, the upper side plate, the upper rear plate, the upper tail plate and the lower tail plate form a complete protection fence, internal hollow building blocks can be protected, the building blocks are prevented from being shaken off in the transportation process, the transportation safety is improved, meanwhile, the height of the top frame, the height of the upper side plate, the height of the upper rear plate and the height of the upper tail plate can be increased through the electric rods, and the transportation efficiency is improved. Therefore, the transportation volume is increased and the transportation efficiency is improved.