7results about How to "Prevent flow through" patented technology

The application discloses a kind of tangential magnetization rotor integrated shaftless impeller's magnetic suspension artificial heart pump structure, including impeller and several equidistantly connected independent blades of equal size and material in rotor inside, the blade is located in rotor center, but not connected on main shaft, realize the integration of impeller and rotor and the shaftless of impeller, improve traditional central shaft driven impeller to four peripheral driving type.Blade equidistantly connects in rotor shield sleeve inside, realizes shaftless, to be integrated with rotor in one body.The application adopts above-mentioned tangential magnetization rotor integrated shaftless impeller's magnetic suspension artificial heart pump structure and can reduce motor volume, easy to transplant;Meanwhile, the integrated structure can prevent blood from flowing through motor air gap to the maximum, to reduce the situation of hemolysis and thrombosis.

A waterproof induction cooker, comprising a metal housing with a lower opening and a metal bottom plate. The metal housing includes a through hole provided on the top plate, an air outlet hole group provided on the rear back plate, and a waterproof eaves plate provided at the top of the rear end; an air inlet hole group is provided on the metal bottom plate, and the metal bottom plate is buckled and fixed with the lower opening of the metal housing. With the arrangement of the water guiding eaves plate, the water falling on the top of the metal housing is discharged through the water guiding eaves plate, preventing the water from flowing through the rear back plate, thereby preventing the water from entering the housing through the air outlet hole group, thus achieving waterproofing.

The embodiment of the invention provides a control method of an air conditioning system, a controller, the air conditioning system, a medium and a product, the air conditioning system comprises an outdoor unit, a plurality of indoor units and a plurality of electronic expansion valves, and the method comprises the steps that in a refrigeration mode, the operation frequency of the outdoor unit and the operation state of each indoor unit are obtained; under the condition that the operation frequency is larger than the preset frequency, according to the operation states of all the indoor units, a target indoor unit in the shutdown state is determined in the multiple indoor units, and the current temperature of a heat exchanger of the target indoor unit in the shutdown state is obtained; and the opening degree of the electronic expansion valve corresponding to the target indoor unit is adjusted through the current temperature of the heat exchanger. According to the embodiment of the invention, the opening degree of the corresponding electronic expansion valve can be adjusted according to the current temperature of the heat exchanger of the target indoor unit in the shutdown state, so that the refrigerant can be effectively prevented from flowing through the target indoor unit, the refrigeration effect of the multi-split air conditioner is improved, the flowing noise of the refrigerant is reduced, and the customer satisfaction is improved.

The utility model discloses a feeding and discharging integrated channel, a popcorn making system and a popcorn machine, and belongs to the technical field of popcorn machines, the feeding and discharging integrated channel comprises a feeding channel and a discharging channel, the feeding channel and the discharging channel are both used for being connected with a making device, the feeding channel serves as a channel for inputting raw materials, and the discharging channel serves as a channel for outputting finished products. The manufacturing device is used for receiving raw materials, manufacturing the raw materials into finished products and outputting the finished products through airflow, a discharging port of the feeding channel is formed in the discharging channel and communicates with the discharging channel, and the discharging port is provided with an arc-shaped protrusion. The arc-shaped protrusion is located on the windward side of the discharging port and used for guiding airflow to cross the discharging port so that air pressure of the discharging port can be balanced with external air pressure or negative pressure can be formed. According to the feeding and discharging integrated channel, popcorn and corn kernels can be effectively separated through wind power, meanwhile, the popcorn and chippings can be effectively prevented from entering the feeding channel, and the maintenance frequency and the maintenance cost are greatly reduced.

The invention discloses a heat pump air conditioning system which comprises a compressor and a heat pump, the four-way reversing valve is connected with the compressor and is configured to change the flow direction of a refrigerant; the indoor heat exchanger is connected with the four-way reversing valve; the outdoor heat exchanger is connected with the four-way reversing valve; the refrigerant storer is configured to store a refrigerant flowing through the refrigerant storer; the first pipeline is configured to connect the outdoor heat exchanger and the indoor heat exchanger; the branch pipeline is configured to be connected with the refrigerant storage and the first pipeline to form a refrigerant flow path; the adjustable on-off device is arranged on the first pipeline, and the adjustable on-off device is configured to adjust the flow of the refrigerant flowing through the refrigerant storage so as to adjust the refrigerant circulation amount in the air conditioning system. According to the air conditioning system, dynamic adjustment of the refrigerant circulation amount can be achieved, so that the requirements of the air conditioning system for the refrigerant amount under different working conditions are met.

The utility model provides an anti-blocking pipeline for concrete pouring, and relates to the field of concrete. The anti-blocking pipeline for concrete pouring comprises a discharging pipe, the right side of the top end of the discharging pipe is in through connection with a limiting groove, the bottom end of the right side of the limiting groove is fixedly connected with a guide plate, the inner walls of the front end and the rear end of the limiting groove are fixedly connected with guide rails, and a guide groove is slidably connected to the position, located above the guide plate, in the limiting groove; the right end of the baffle is connected with a water conveying pipe in a penetrating mode, a connecting ring is rotationally connected to the position, below the guide plate, of the inner wall of the discharging pipe, and two scraping plates are connected to the bottom end of the connecting ring in an array mode. When the anti-blocking pipeline for concrete pouring is used, a power motor drives a power gear to rotate, the power gear drives a fixing ring to rotate through a tooth groove plate, the fixing ring drives a scraping plate to clean the inner wall of the discharging pipe, the spiral scraping plate scrapes concrete out of the discharging pipe, and the anti-blocking pipeline for concrete pouring has the advantage of being convenient to clean.

The application discloses a variable-volume supercritical extraction device and a use method. The extraction kettle comprises a top cover, a kettle body, a top filter cover, an extrusion device and a pushing device. The kettle body is open at both upper and lower ends, the upper end of the kettle body is in sealing connection with the top cover, and the lower end is in sealing connection with the extrusion device. A temperature control layer is arranged outside the kettle body, and a kettle cavity is formed inside the kettle body. The top filter cover is in sealing connection with the kettle body. An inlet pipeline is arranged at the bottom of the kettle body. An upper gas outlet pipeline is arranged at the upper end of the side wall of the kettle body. The upper gas outlet pipeline is in communication with the inner cavity of the top filter cover. The extrusion device comprises a thrusting circular table, a push rod and a filter plate. The thrusting circular table is movably arranged in the kettle cavity, the push rod is connected with the thrusting circular table, and the filter plate is arranged on the thrusting circular table. The upper end of the inlet pipeline is arranged between the thrusting circular table and the filter plate. The extrusion device is connected with the pushing device. The application has the advantages of simple structure, convenient operation, no need of an inner material cylinder, convenient loading and unloading, saving of manpower and material resources, and wide application in the field of supercritical extraction.