8 results about "Air sensitivity" patented technology

This invention provides a sealing device and method for a high-speed solid-state NMR rotor. The sealing device includes a first structure, a second structure, a precision needle gauge, a first base, a second base, a sleeve, a sample, a sample loading tool guide rod, a rotor drive cap, and a manual precision vise. The sealing method utilizes a sealing gasket of appropriate thickness, pressed against the inner wall of the rotor by centrifugal force at high speed, sealing the gap between the bottom cap / drive cap at both ends of the rotor and the inner wall of the rotor, thereby preventing external air from contacting the sample powder. This invention significantly improves the stability of the sample during sampling and enables the acquisition of high-resolution solid-state NMR spectra at high speeds. The developed sealing tool can be used in conjunction with the rotor's sample loading tool in the inert atmosphere of a glove box, achieving the processing and sealing of solid-state NMR samples in one step. The method is simple to operate, highly practical, and suitable for various dehydrated samples and solid samples sensitive to water / oxygen / air.

The utility model discloses a kind of planetary multi-shaft grinding cavity structures, detachable connection between tank cover and tank body support sleeve shaft and tank body makes that cleaning and maintenance are more convenient, it is also convenient to replace or adjust internal component simultaneously, the design that grinding blade assembly is movably connected with tank body support sleeve shaft can ensure in operating process, blade can automatically adjust position or angle according to the state of material, to improve grinding efficiency and uniformity, pressure gauge on tank cover can monitor and adjust the pressure in tank in working process, prevent the security risk caused by excessively high pressure, ensure the safety of operation, the existence of air inlet pipe and air outlet pipe means that the device can operate in different gas environment, such as under inert gas protection to handle air-sensitive material, or by introducing specific gas to promote certain chemical reaction, greatly improve the controllability and application range of device.

This utility model relates to a transfer and support device for air-sensitive samples, comprising a base, a sample chamber, an exhaust chamber, and a moving device. The sample chamber is detachably mounted on the base and connected to the upstream side of the exhaust chamber via a connecting pipe. The downstream side of the exhaust chamber is detachably connected to an air pump via a spring-loaded sealing device. The spring-loaded sealing device includes a sealing shell and a spring-loaded component within the sealing shell. The upstream side of the sealing shell is aligned with the downstream side of the exhaust chamber. The air-blocking plate of the spring-loaded component is connected to the downstream side of the sealing shell via a spring. The spring-loaded component can move back and forth within the sealing shell under the action of air pressure and spring force. When the air-blocking plate seals the upstream side of the sealing shell, it seals both the sample chamber and the exhaust chamber. When the air-blocking plate moves to the downstream side of the sealing shell, the exhaust chamber connects to the sealing shell, allowing air to be drawn from both the sample chamber and the exhaust chamber. The moving device is installed in the detection chamber of a detection instrument and is used to remove the sample chamber, exposing the sample to the detection area for easy detection.

The invention belongs to the technical field of polyester fiber production, and particularly relates to a continuous feeding and conveying system suitable for air-sensitive materials. According to the invention, 'whole-course sealing protection ', 'continuous feeding', 'efficient metal impurity interception 'and'low-energy-consumption stable conveying' are efficiently integrated into a whole. And the quality stability of the air-sensitive material is ensured through the sealing performance of the system, so that the product defects caused by the deterioration of the material are avoided from the source. And through a continuous feeding mode of double tanks connected in parallel, the production efficiency and the automation degree are greatly improved, and the manual operation intensity is effectively reduced. And long-period safe and stable operation of downstream equipment is effectively guaranteed through efficient iron removal capacity. And due to the combination of low-energy-consumption material limiting and pneumatic conveying, the operation cost of the system is greatly reduced, and good economical efficiency is embodied.

The invention relates to a sample reaction transfer device for air sensitive samples, which comprises a base, a gas buffer chamber and a plurality of sample chambers, the gas buffer chamber and the sample chambers are arranged on the base, the sample chambers are detachably connected with the upper surface of the base, and laser transmitters are arranged in the sample chambers and used for performing interface reaction experiments on the samples; each sample chamber is communicated with a gas buffer chamber through a breather pipe, gas in the gas buffer chamber and the sample chambers is pumped out through a gas outlet end of the gas buffer chamber, and samples are prevented from being in contact with air; a plurality of movable sealing mechanisms are arranged in the gas buffer chamber, the movable sealing mechanisms are in one-to-one correspondence with the sample chambers, each movable sealing mechanism comprises a pusher and a telescopic gas blocking part, and the pusher pushes the gas blocking parts to stretch out and draw back so as to block or open the corresponding ventilation pipes, so that the gas buffer chamber is disconnected from or recovered from the corresponding sample chambers.

The present invention discloses a scanning electron microscope sample injection protection device for air-sensitive samples and its use method. The device consists of a sleeve, a sleeve screw cap, a spring chamber, a compression spring, a sample chamber, a fork-shaped baffle, a fixed base and other parts. The sample chamber is sealed in the sleeve with the help of a resistance rubber plug that can achieve good airtightness. The sample chamber is provided with a sample chamber for loading the sample to be tested; the fork-shaped baffle is used to ensure that the sample chamber is in a static sealed state during the preparation stage. Before testing, the various components of the sleeve are assembled in a glove box, and then the fixed base and sleeve are fixed to the electron microscope sample stage. Before the electron microscope is evacuated, the fork-shaped baffle is quickly pulled out, and the sample chamber will slowly move toward the observation window on the sleeve under the drive of the spring, while remaining in a sealed state. When the electron microscope is in a high vacuum, the sample chamber moves into place and is fully exposed inside the electron microscope. This injection method can ensure that the sample is always kept away from air, thereby achieving non-destructive injection of air-sensitive samples in a simple and effective way.

The utility model discloses a sealing device for organic element analysis of air sensitive sample, which comprises a shell, a sample holder and a clamping mechanism, the top end of the sample holder is provided with a plurality of sample placing grooves which are sequentially arranged along the length direction of the sample holder, the clamping mechanism comprises a driving component and two clamping plates, the two clamping plates are connected with the driving component, and the driving component is connected with the sample placing grooves. The driving assembly is installed on the shell and comprises a torque wrench, a screw rod and two sliding blocks, the screw rod is arranged in the shell and rotationally connected with the shell, and a rotating connector is fixed to one end of the screw rod; and the torque wrench drives the rotary joint to drive the screw rod to rotate so as to drive the two clamping plates to move close to or far away from each other so as to simultaneously clamp and seal all tin cup openings on the sample rack. A plurality of tin cups can be placed on the sample holder at a time and sealed at the same time, the sample preparation efficiency is improved, the torque of the torque wrench can be adjusted according to the actual sealing effect, the required sealing effect is achieved, and the purpose of quantizing the sealing effect is achieved.

The invention discloses a scanning probe microscope imaging test structure for air sensitive materials, which comprises an outer cavity, a sealing cover, a sealing medium, a plug, a signal interface, a bunching device and an internal test unit, and is characterized in that the internal test unit consists of a piezoelectric motor, a sample table and a needle frame and is fixed at one end of the outer cavity; the outer cavity is provided with an opening which is detachably connected with the sealing cover and the signal interface, the sealing medium is used for sealing the joint, the plug is detachably connected with the sealing cover, and the bunching device is fixed in the outer cavity. A relatively sealed space can be formed by the outer cavity, the signal interface, the sealing cover and the sealing material, and the to-be-detected material is mounted and transferred in the sealed space, so that the to-be-detected material is prevented from being in contact with the external space to be deteriorated in the transferring process; after the sample is transferred, the seal is broken through the action of internal and external pressure difference, and the sample enters a vacuum environment; and the data acquisition work including but not limited to the air sensitive material is realized under the control of an external controller by utilizing an internal test unit.