3results about How to "Will not flow back" patented technology

The utility model relates to the technical field of tea making, propose a kind of tea maker and its portable liquid heating kettle, tea maker, including the detachable installation in heating container's tea making container, liquid inlet subassembly is equipped in tea making container, liquid inlet subassembly output end is connected with tea making container, and liquid inlet subassembly input end is connected with heating container;Liquid of heating container is in boiling state, liquid is unidirectionally entered into tea making container along liquid inlet subassembly, and the liquid in tea making container keeps apart from heating container, and the liquid in tea making container will not backflow to heating container.Tea maker is through the detachable installation of tea making container and liquid inlet subassembly, realized the automatic delivery of liquid in heating container to tea making container, to complete automatic tea making process.Compared with traditional filter cartridge type tea maker, the design avoids the problem that tea leaf is inconvenient to put, tea leaf is easy to spill due to the small opening of filter cartridge.

The invention discloses an indoor gas purification device for anesthesia, and relates to the technical field of medical instruments, the device comprises a mask, the outer side of the mask is provided with a treatment assembly, the treatment assembly is provided with a communication block, an outer side pipe, a treatment box, a treatment block and the like, the back of the mask is provided with a fixing belt, and the front side of the mask is provided with a connecting pipe communicated with a gas inlet pipe and provided with a first one-way valve; the outer side of the treatment box is in threaded connection with a threaded cylinder and a sealing cover, the outer side of the sealing cover is provided with an exhaust pipe and an electrochemical sensor, the treatment block is composed of breathable gauze and a molecular sieve, the sealing performance of the mask is guaranteed through a fixing band and a sealing gasket, and a first one-way valve prevents backflow; when the anesthetic content exceeds the standard, the communication direction of the one-way electromagnetic valve is changed through the external controller, so that the treatment block is replaced, anesthetic gas can be effectively absorbed, the environment safety of an operating room is guaranteed, and the reliability and practicability of the device are improved.

The utility model relates to the technical field of lifesaving devices, in particular to a high-rise lifesaving device which comprises a rotating wheel, a hydraulic brake, a hydraulic pump, a hydraulic reversing valve and a speed regulating fly ball used for driving a valve element in the hydraulic reversing valve to move. The runner is in transmission connection with the hydraulic pump and the speed-regulating flyweight; a first spring for pushing a valve core in the direction close to the speed regulating fly ball is arranged in the hydraulic reversing valve; an inlet and one outlet of the hydraulic reversing valve are connected with an oil tank through an oil inlet pipeline and an oil return pipeline respectively, and the other outlet of the hydraulic reversing valve is connected with a hydraulic brake through a brake pipeline. The brake pipeline is connected with a compensation hydraulic cylinder through a compensation pipeline, and a lever is arranged on one side of the compensation hydraulic cylinder and rotates around the middle of the compensation hydraulic cylinder. The hydraulic reversing valve is provided with a push rod used for pushing the first spring in the direction close to the speed adjusting fly ball. The two ends of the lever abut against a piston rod and a push rod of the compensation hydraulic cylinder respectively. According to the utility model, starting and braking can be delayed; and the influence of the outer diameter reduction of the rope ring on the descending speed is reduced as much as possible.