11results about How to "Sampling safety" patented technology

The present invention is directed to the field of throat swabs, and specifically relates to an unattended automatic sampling device for throat swabs. The sampling and transporting mechanism drives the conveyor belt body to transport along the length direction of the conveyor belt body, and the conveyor belt body is isolated and pre-installed with multiple throat swab sampling bodies along the length direction; the sampling mechanism, the sampling mechanism includes a sampling table with a sampling port, and the sampling and transporting mechanism drives the conveyor belt body to pass the throat swab sampling bodies through the sampling port in sequence. The beneficial effect of the present invention is that compared with the prior art, the present invention can automatically, gently, quickly and accurately complete the sampling task of pharyngeal tissue in a pollution-free, fully isolated, identifiable, standardized and modular manner for the sampled samples through human-machine collaboration, thereby improving the sampling accuracy and the comfort of the sampled personnel.

The utility model relates to a kind of crystallizer gas sample sampling device, belong to metallurgical industry continuous casting production process auxiliary equipment technical field.The technical scheme is: containing metal handle (1), limiting silk (2), clamping spring (3) and gas sampler (4), the lower end of metal handle (1) and clamping spring (3) are fixedly connected together, gas sampler (4) is inserted into clamping spring (3), metal handle (1) is equipped with the limiting silk (2) matched with gas sampler (4);The limiting silk (2) is fixed on metal handle (1);The gas sampler (4) is vacuum glass tube, lower part is conical, and upper part is cylindrical;The limiting silk (2) is arranged perpendicularly with metal handle (1), and metal handle (1) is arranged parallelly with the center line of gas sampler (4).The utility model has the beneficial effects that: gas sampler can be accurately and quickly inserted into crystallizer steel liquid, sample quality is good, and detection accuracy is high.

The utility model discloses raw material mixing equipment before single crystal production, which comprises a stirring shell, a single crystal raw material stirring assembly, a push-and-pull assembly, a baffle and a storage box, the single crystal raw material stirring assembly is arranged in the stirring shell, the storage box is arranged on the outer side of the stirring shell, and the push-and-pull assembly is arranged on the baffle. And the baffle plate is attached to the inner arc wall of the stirring shell through a preset arc-shaped groove and is pushed and pulled by the push-pull assembly to move in the storage box. An air pump is started, the power output end of the air pump pulls a supporting plate, a roller slides in the length direction of a sliding rail to drive a baffle to move towards the direction away from the stirring shell, a storage box communicates with the stirring shell through an arc-shaped groove, and raw materials are pushed into the storage box under stirring pushing of a stirring block; the whole structure is simple, the sampling is convenient and fast, and the rapidness is improved.

The utility model discloses a device for sampling liquid in a reaction kettle, which relates to the technical field of sampling devices and comprises a sampling tube, a branch tube and a sleeve, one end of the sampling tube is arranged in the reaction kettle through a sealing element, the other end of the sampling tube is inserted into a sampling tank, and an electromagnetic valve is further mounted on the sampling tube. The three branch pipes are sequentially arranged on a sampling pipe in a reaction kettle through inclined connectors, a sleeve rotationally connected with the branch pipe is arranged in each branch pipe, the sleeves are communicated with the sampling pipe, a plurality of first liquid inlet holes are evenly distributed in the sleeves, second liquid inlet holes corresponding to the first liquid inlet holes are formed in the branch pipes, a waterproof motor is installed at the upper end of each branch pipe, and the waterproof motor is connected with the corresponding first liquid inlet hole. And an output shaft of the waterproof motor is connected with the sleeve. When the sampling device is used, liquid materials at different heights of the reaction kettle can be sampled in a specified manner through the casing pipes which are distributed on the sampling pipe and can be controlled in a rotating manner and are inclined by 15 degrees, 45 degrees and 75 degrees, so that the specified sampling of the materials is improved, and the sampling detection accuracy of the materials is improved.

The invention belongs to the technical field of laser precision detection, and discloses an aluminum alloy corrosion degree laser probe quantitative detection method and a sampling device.The detection method comprises the steps that microporous filter paper is placed at the sampling position of aluminum alloy and subjected to standing corrosion for preset time so as to transfer out elements to be detected in the aluminum alloy, and the microporous filter paper contains prefabricated corrosion liquid; fixing microporous filter paper on a pure silicon glass slide, and airing to obtain a sample to be detected; scanning the surface of the microporous filter paper of the to-be-detected sample by the laser beam to obtain spectral data of the to-be-detected element; and after optimizing the spectral data, constructing a mapping relation between the laser plasma spectral characteristic signal and the corrosion degree of the aluminum alloy by utilizing a machine learning algorithm so as to obtain a corrosion degree value of the aluminum alloy. The sampling device comprises microporous filter paper and a pure silicon glass slide which can be fixed into a whole, and an anti-corrosion sealing box used for containing the microporous filter paper and the pure silicon glass slide. The detection efficiency, the analysis precision and the result reliability of quantitative detection of the laser probe can be improved.

The application discloses a method for determining the content of aluminum in thionyl chloride solution of aluminum trichloride by complexometric titration, and relates to the field of complexometric titration in analytical chemistry. After a sample is hydrolyzed under a closed condition, aluminum ions are combined with an excessive amount of disodium ethylenediaminetetraacetate solution under the condition that the pH value is about 3.0. Then, the excessive amount of disodium ethylenediaminetetraacetate is titrated by using dimethylphenyl orange as an indicator and a zinc chloride standard titration solution under the condition that the pH value is about 6.0. The method has the advantages of convenient sampling safety, simple determination steps, easy mastering, short analysis time and accurate detection result.

The invention relates to the technical field of power electronics, and discloses a current sampling circuit and method applied to an electric large engineering machinery vehicle. Three inductors in a three-phase motor are additionally provided with secondary windings and are improved into three coupling transformers, so that when the direction, frequency and magnitude of current flowing through the inductors in the three-phase motor are changed, the current is sampled by the three coupling transformers; the secondary side inductors are synchronously coupled to the corresponding secondary side inductors, and voltage signals induced by the secondary side inductors of the coupling transformer in the three-phase motor are fed back to the control unit; based on the resistance value of the built-in resistor of the control unit and the voltage signal, the induced current of the secondary side inductor is calculated; the sampling current of the primary side inductor is calculated by using the turn ratio of the primary side inductor to the secondary side inductor in the coupling transformer and the induction current of the secondary side inductor. According to the invention, by adding the secondary side inductor, the cost is low, the sampling is safe and reliable, the element falling of the electric large engineering machinery vehicle under the severe working condition can be avoided, and the stability and the reliability of the sampling circuit are improved.

The present invention relates to the technical field of underground operation installation detection equipment, and in particular to an underground gas automatic detection device and a detection method for its application, which specifically comprises: installing a gas detection module on a release frame, releasing the release frame to a predetermined position in a detection well by a lifting mechanism, and collecting detection data of the gas detection module on the original underground gas; when the gas detection module recognizes a low flow rate for the underground gas detection, the gas source can be started, so that a driving mechanism drives a fan to work, and the air flow rate is formed by using the underground original gas, and the size of the gas source can be adjusted to control the flow rate; the sampling mechanism can enter a sampling working state by starting a driving motor, and the real sampling is completed and stored in a sampling bag; the technical solution does not use forced ventilation to interfere with the underground original gas, but indirectly uses a pure mechanical power fan to provide power, and can also effectively complete the sampling through the sampling mechanism, which is safer.

The present invention discloses a biopsy device and a winding and firing method thereof, comprising a needle core, a needle tube and an operating handle, wherein the operating handle comprises a mounting frame, wherein a first slider, a first firing spring, a second slider and a second firing spring are arranged in the mounting frame, wherein a winding and firing mechanism for driving the first slider and the second slider to move backward and lock and position and compressing the first firing spring and the second firing spring to accumulate potential is also arranged on the mounting frame, and a firing unlocking mechanism for releasing the locking and positioning of the first slider and / or the second slider. The scheme has a reasonable structure, convenient and comfortable operation, and certain cost advantages.

The utility model discloses a safe sampler for anti-corrosion liquid, which comprises a hollow hand lever, a sealing cover and a container. One side of the lower end of the hand lever is connected with a container through a connecting block; a round hole is formed in one side of the upper end of the hand lever; a strip-shaped through hole A is formed in one side of the lower end of the hand lever close to the container; a through hole B is formed in the upper end of the hand lever; a pressing cap is inserted into the through hole B; a buckle structure is arranged at the lower end of the pressing cap; a movable rod is arranged at the lower end of the buckle structure; the upper end of the movable rod is sleeved with a spring. The lower end of the movable rod is connected with a rotating structure; the rotating structure penetrates through the through hole A and is connected with a sealing cover; and the sealing cover is matched with the container for use. According to the anti-corrosion liquid safety sampler, the sampling safety is improved, the operation convenience and the durability of equipment are ensured, and the anti-corrosion liquid safety sampler has higher practical value and market application prospect.