6results about How to "Improve the pumping effect" patented technology

The utility model discloses a swimming pool cleaning robot capable of enhancing the water channel cleaning effect. The swimming pool cleaning robot comprises a robot body, a sealing cavity and a water pumping cavity. Wheels are arranged at the bottom of the machine body, and a rolling brush is arranged at the front end. A garbage inlet is formed in the bottom of the machine body; a cleaning opening is formed in the position, corresponding to the garbage inlet, of the bottom of the sealing cavity. A water pumping opening is formed in the top of the side wall of the sealing cavity; the water pumping opening and the side wall of the sealing cavity are integrated; the water pumping cavity is arranged in the machine body, and water pumping fan blades are arranged in the water pumping cavity; the water inlet end of the water pumping cavity communicates with the water pumping opening, and the water outlet end of the water pumping cavity communicates with the outside. According to the swimming pool cleaning robot, the water absorption capacity is enhanced, and the cleaning effect is good.

The invention discloses a mixing and fermentation device for feed production in the technical field of feed production, the mixing and fermentation device comprises a fermentation tank, a feeding device and an air exhaust assembly, the feeding device comprises a shell, a feeding port is formed in the bottom of the shell to be communicated with the fermentation tank, and a feeding port is formed in the top of the shell; the air exhaust assembly comprises a flexible belt arranged in the shell, the flexible belt is provided with an opening communicating with the feeding port and the feeding port, an air exhaust rod is arranged on the upper wall of the shell, one end of the air exhaust rod extends to the upper end of the shell, the other end of the air exhaust rod extends into the flexible belt and is used for pre-compressing raw materials to extrude out internal air, and a third driving part for driving the air exhaust rod to rotate is further arranged on the shell. A flexible bag is arranged for pre-storing the raw materials, then an air exhaust rod is arranged to stretch into the flexible bag for air exhaust, the air exhaust rod can be provided with a plurality of air exhaust points in a distributed mode, in cooperation with the tightening and compressing functions of the flexible bag, the air exhaust effect can be greatly improved, and a large amount of oxygen in gaps of the raw materials can be discharged easily; and the subsequent chemical oxygen removal cost is reduced.

The invention belongs to the technical field of electric appliances, and particularly discloses a pumping and discharging device and oil smoke pumping and discharging equipment. The pumping drainage device comprises a main fan, a mounting bracket and an auxiliary pumping drainage piece. A motor shaft of the main fan is coaxially connected with a transmission shaft; the transmission shaft extends out of an air inlet of the main fan; the mounting bracket is positioned outside the main fan; the auxiliary pumping and discharging pieces are installed on the installation support and at least two auxiliary pumping and discharging pieces are arranged around the transmission shaft at intervals, and the transmission shaft is in transmission connection with the auxiliary pumping and discharging pieces, so that rotation of the motor shaft drives all the auxiliary pumping and discharging pieces to rotate to form negative pressure in the direction away from the air inlet of the main draught fan. The oil fume pumping and discharging equipment comprises an oil fume collecting hood with an oil fume collecting cavity and a pumping and discharging device, the pumping and discharging device is installed on the oil fume collecting hood, and at least the installation support and the auxiliary pumping and discharging piece are located in the oil fume collecting cavity. According to the exhaust device and the lampblack exhaust equipment disclosed by the invention, the running negative pressure can be increased, the negative pressure action range can be enlarged, the smoke leakage probability can be reduced, and the lampblack exhaust efficiency and the lampblack exhaust effect can be improved.

A straw indirect carbonization-based soil improvement method and system, the method comprising the following steps: (A) collecting straw, cutting the straw into straw particles; (B) extruding and destroying the surface of the straw particles; (C) using microwave heating to extrude the straw particles, obtaining puffed straw particles; (D) carbonizing the surface of the puffed straw particles, obtaining carbonized particles for discharge into soil. The indirect carbonization method of first breaking the wall and then puffing and carbonizing the surface can significantly reduce the energy consumed during carbonization and shorten the processing time of the straw, which is conducive to the straw carbonization and field application treatment of a large area of soil. At the same time, the surface-carbonized carbonized particles can provide sufficient biomass carbon for the soil, and it is not necessary to remove part of the carbonized particles from the field due to the excessive biomass carbon of the soil. In addition, the carbonized particles also well retain the nutrients in the straw.

The present application relates to the technical field of turbo molecular pump, in particular to a kind of turbo molecular pump blade, turbo rotor and turbo molecular pump.Turbo molecular pump blade, the pressure surface and suction surface of blade body are both curved surface, the thickness of the blade body gradually decreases from root to top, the blade thickness of the blade body root is 3.5mm-4.5mm, the blade thickness of the blade body top is 1.5mm-2.5mm, the inlet angle of the blade body is 25°-35°, the outlet angle of the blade body is 40°-50°, the blade inclination of the blade body is 0°-20°.Design as smaller inlet angle and larger outlet angle, can improve the ability of capture, discharge and reverse to prevent backflow to the gas pumping capacity.In the case where other parameters are the same, it can improve the pumping speed and compression ratio of turbo molecular pump, can greatly improve the pumping capacity of turbo molecular pump under low pressure working condition.

The utility model relates to motor technical field, concretely is a kind of shielded pole motor for water pump, including connecting plate, motor mechanism, water pump mechanism and connecting support mechanism, the motor mechanism is fixedly connected in the inside of connecting plate, the motor mechanism includes fixedly connected in the inside of connecting plate machine.The utility model in the present application, when the running winding of motor is electrified to produce alternating magnetic field, short-circuit ring will induce current, the magnetic field produced by this current and the magnetic field produced by running winding interact, thereby producing rotating magnetic field, drive motor rotor rotation, bearing reduces rotating shaft rotation friction, improves transmission efficiency, wind wheel rotates under the driving of rotor, so that the heat generated by motor can be taken away with air convection, thereby dissipating to surrounding environment, effectively reduce motor temperature, cooperate with mesh cover, effectively improve the heat dissipation performance of motor, reduce motor operating temperature, prolong the service life of motor.