7results about How to "Restricted access" patented technology

The automatic fire extinguishing equipment comprises a protective shell, a lithium battery body is connected to the interior of the protective shell, a heat dissipation sealing mechanism is arranged on the outer side of the protective shell, and a partition fire extinguishing mechanism is arranged on the inner side of the protective shell; the heat dissipation sealing mechanism is arranged on the outer side of the protective shell, and the connecting piece, the multiple sealing blades, the first supporting arm, the second supporting arm, the extending plate, the transmission piece and the adjusting rod are arranged in a series linkage mode, so that the first motor can synchronously adjust the opening or closing state of the multiple sealing blades when being controlled and driven; in the normal working process of the lithium battery body, efficient heat dissipation is achieved in cooperation with the ventilation pipe and the heat dissipation fan, the ventilation channel can be rapidly closed when temperature rises abnormally, external air is prevented from entering the protection shell, and the combustion condition is weakened from the environment level.

The application relates to a water and fertilizer integrated mixing and irrigation device and belongs to the technical field of irrigation devices, which comprises a main body, a plurality of supporting legs fixedly connected to the bottom of the main body, a water storage cavity arranged in the inside of the main body, a water inlet pipe arranged on one side of the top of the main body and communicated with the water storage cavity, a drainage pipe arranged on the bottom of one side of the main body and communicated with the water storage cavity, a second valve body arranged on the drainage pipe, a storage cavity arranged on one side of the inside of the main body, a water conveying mechanism arranged on the top of the main body and capable of conveying water in the water storage cavity into the storage cavity. The water pump electric device can realize the mixing of the fertilizer and water and the irrigation work, the device cost is saved, the operation is simpler, the two different modes can be freely switched by controlling the opening of the spraying pipe, the complicated switching operation is not needed, the rapid mixing effect can be realized by utilizing the circulating flow of the water, and the mixing effect is good.

The utility model provides a movable positive-pressure dust removal device for field installation of extra-high voltage GIS (gas insulated switchgear) power equipment, and belongs to the technical field of GIS installation. Comprising a dust-proof working chamber, a first secondary dust-proof pipeline channel, a second secondary dust-proof pipeline channel and a secondary dust-proof people flow channel, the first secondary dustproof pipeline channel and the second secondary dustproof pipeline channel are oppositely arranged on the two sides of the dustproof operation chamber, and each of the first secondary dustproof pipeline channel and the second secondary dustproof pipeline channel comprises a pipeline channel primary dustproof door and a pipeline channel secondary dustproof door which are oppositely arranged; the secondary dustproof pedestrian flow channel comprises a pedestrian flow channel primary dustproof door and a pedestrian flow channel secondary dustproof door which are oppositely arranged, the pedestrian flow channel secondary dustproof door is arranged on the side face of the first secondary dustproof pipeline channel, and the probability that the closed inner door and the closed outer door are opened at the same time can be greatly reduced by designing the secondary doors. And outdoor tiny dust particles are effectively prevented from entering the operation space along with people flow or material flow, so that the installation quality of the GIS equipment is effectively improved.

The utility model discloses a multifunctional height limiting road card belongs to height limiting road card field, including left stand and right stand, and left stand and right stand between fixed connection has fixed crossbeam, left stand and right stand between and located fixed crossbeam's below still be equipped with lifting height limiting mechanism, and lifting height limiting mechanism includes lifting crossbeam, hydraulic oil cylinder and lifting seat, through setting up the lifting height limiting mechanism of hydraulic oil cylinder, lifting seat etc. that left stand and right stand are in, can be according to the actual demand of different operation stage of water conservancy project, conveniently adjust the height of lifting crossbeam, when engineering construction, equipment overhauls or emergency rescue, can temporarily promote height limiting height, guarantee special operation vehicle and equipment smooth traffic, and under normal state, can reduce height limiting height again, effectively limit large heavy load and super high vehicle to enter, protect water conservancy engineering road and facility safety, significantly improved the use flexibility and applicability of height limiting road card.

The application belongs to the technical field of environmental monitoring and analytical chemistry, and discloses a detection method for the content of methyl tert-butyl ether in soil. The method uses surface functionalized mesoporous silica adsorbent for solid phase extraction, combines ultrasonic assisted extraction with gas chromatography-mass spectrometry analysis, the adsorbent has a pore size of 2.5-4.0 nm, and a surface grafted with bifunctional ligands containing tertiary amine groups and short chain alkyl groups, and has high selectivity and adsorption capacity for methyl tert-butyl ether; the mass spectrometry detection adopts double ion confirmation and intensity ratio criterion, effectively eliminating the interference of structural analogues. Through the design of special adsorption materials, the optimization of the pretreatment process and the construction of the mass spectrometry confirmation logic, the application realizes high sensitivity, high selectivity and high reproducibility detection of trace methyl tert-butyl ether, and can be widely applied to industrial pollution site investigation, farmland soil safety evaluation, groundwater pollution tracing and emergency monitoring of environmental incidents.

This application relates to the technical field of screening equipment, and proposes a rotary vibrating grading screen, including a frame, a screen box, and a rotary drive component. The screen box is suspended from the frame by several universal joint rods. The rotary drive component is located at the bottom of the screen box. A feed pipe is connected to the top of the screen box, and an extension bracket is connected to the top of the frame. The extension bracket is located above the feed pipe, and a connecting pipe is provided on the extension bracket corresponding to the feed pipe. A telescopic pipe is also connected to the bottom end of the connecting pipe. A first connecting ring and a second connecting ring are coaxially connected to the outer circumference of the telescopic pipe and the feed pipe, respectively. The first connecting ring and the second connecting ring are abutted against each other. The diameter of the telescopic pipe is smaller than the diameter of the feed pipe, and the diameter of the first connecting ring is larger than the diameter of the second connecting ring. This application has the effect of better maintaining a sealed connection between the feed pipe of the screen box and the output end of the upstream equipment.