69results about How to "Change the pressure" patented technology

The invention relates to the technical field of heating equipment, in particular to a geothermal heating assembly for a smart home. The geothermal heating assembly for the smart home comprises a fixedframe, a mounting structure, a sealing structure, mounting grooves, a driving structure, a storage structure, sliding chutes and a limiting structure. The storage structure is used for installing a smart home control device, penetrated by the sliding chutes and abutted against the fixed frame; the fixed frame is abutted against the mounting structure which is used for mounting floors, and one end, close to the fixed frame, of the mounting structure is provided with the limiting structure which is used for sealing and relieving the pressure of the mounting structure. The driving structure usedfor controlling sealing performance of the mounting structure is arranged inside the mounting structure and is used for adjusting internal pressure of the limiting structure. According to the geothermal heating assembly for the smart home, the fixed frame is arranged in cooperation with the storage structure, and a control assembly can be conveniently installed inside the storage structure, so that indoor space utilization efficiency is greatly improved; the limiting structure is arranged between the mounting structure and the fixed frame, and the driving structure is matched with the limiting structure for usage, so that a mounting and a dismounting of the mounting structure can be more rapid.

The invention relates to a greenhouse crop irrigation system and method with an ideal regulation and control effect. The greenhouse crop irrigation system is characterized by comprising a bracket, a water accumulation device, an irrigation pipe network, a waterhead lifting device and a controller; the bracket is formed by connecting four lower support columns and four upper support columns through inserted links and circular holes; the water accumulation device comprises a water tank fixed on the top end of the bracket, a sensor for monitoring the water level height is arranged in the water tank, a water delivery header pipe is connected to one side of the water tank and the other side of the water tank is communicated with the irrigation pipe network; the irrigation pipe network comprises a branch pipe and a plurality of capillary pipes arranged on the branch pipe at intervals, wherein the tail ends of all the capillary pipes are connected with an air exhaust pipe; a plurality of irrigation emitters are arranged on each capillary pipe at intervals, wherein a plurality of capillary pipe bundles are arranged in an irrigation pipe at the lower part of each irrigation emitter; a humidity sensor is arranged in soil below the irrigation emitters; the waterhead lifting device consists of a pulley block and a water tank digging rope connected with the water tank; and the controller is respectively and electrically connected with the water level sensor, a water intake valve and the humidity sensor. The greenhouse crop irrigation system and method can be widely applied to the irrigation process of various greenhouse crops.

The invention provides a lever type hovering characteristic test simulating device and method of a Mars unmanned aerial vehicle rotor wing system, and relates to the field of hovering characteristic test of unmanned aerial vehicle rotor wing systems. The lever type hovering characteristic test simulating device aims to solve the problems that an existing hovering characteristic test device can only be used for evaluating the hovering performance of an Earth unmanned aerial vehicle rotor wing system, simulation of the Mars environment cannot be achieved, the applicability is poor, and the measuring errors are large. A hovering experiment device is located on the inner bottom face of a Mars atmosphere environment simulating device, and the Mars atmosphere environment simulating device is used for simulating a low-vacuum carbon dioxide gas environment. A base serves as the fulcrum of a balancing plate, a rotor wing of the rotor wing system is mounted reversely, so that the lifting force direction goes downwards vertically, a torque sensor is used for measuring a torque generated in the rotating process of the rotor wing of the rotor wing system, a weight is placed in a weight disk soas to balance the weights of the two ends of the balancing plate, thus the balancing plate can be in a balanced state, and a force cell is used for measuring the lifting force generated in the rotating process of the rotor wing of the rotor wing system. The lever type hovering characteristic test simulating device is used for testing the hovering characteristic of the Mars unmanned aerial vehiclerotor wing system.

The invention relates to the technical field of auxiliary processing equipment for circuit boards, in particular to an environment-friendly auxiliary processing equipment for communication integrated circuit boards, which includes a bottom plate of the equipment, a positioning frame is fixedly connected to the inside of the bottom plate of the equipment, and the right side of the positioning frame The surface is fixedly connected with a connector, and the inside of the connector is hinged with a telescopic rod. The right end of the telescopic rod is movably connected with a limiting plate, and the left side of the limiting plate is fixedly connected with an extrusion plate. The upper and lower sides of the board are fixedly connected with limit springs. By making the limit plate limit the circuit board, it is convenient to process the circuit board. At the same time, it is convenient to limit the processing of integrated circuit boards of different sizes, so that Improve the use range of the equipment, so as to ensure the processing efficiency of the circuit board, so as to facilitate the adsorption treatment of the irritating and harmful gases generated by the processing, so as to ensure the safety of the processing environment, and at the same time ensure the health of the workers and masters.

The invention relates to a grape fertilization device which comprises a housing and a driving shaft, wherein the driving shaft is connected with a driving wheel; a feeding hopper is arranged at the upper part of the housing; a first rotating shaft is rotationally connected with the side wall of the feeding hopper; a first conveyer belt is connected between the first rotating shaft and the drivingshaft; a first baffle plate is fixedly connected with a first rotating shaft; a first gear is fixedly connected with the first rotating shaft coaxially; a first gear is meshed with a second gear; a second rotating shaft is fixedly connected with the second gear coaxially; a second baffle plate is fixedly connected with the second rotating shaft; a third rotating shaft is rotationally connected tothe interior of the housing; a second conveyer belt is connected between the third rotating shaft and the second rotating shaft; a storage cabin is fixedly connected with the third rotating shaft coaxially; baffle plates are arranged inside the storage cabin; an airbag is arranged between two adjacent baffle plates; the airbag is communicated with an air guide tube; a liquid outlet tube is connected inside the airbag; a fertilization hole is formed in the bottom of the housing; an intermittent discharge mechanism is connected to the fertilization hole in a sliding manner; a third conveyer beltis connected between the intermittent discharge mechanism and the third rotating shaft. By adopting the grape fertilization device, device feeding and device movement are carried out synchronously.