Abstract: The patent application discloses a compressed air control device. The compressed air control device for a source of compressed air on motor vehicles may comprise a housing. The housing may include an air inlet opening located at an outside surface of the housing. The housing comprises an electric motor and an air dryer. The air dryer together with the electric motor forms a first functional unit.

Abstract: The present disclosure relates to a crystal form of a pyridopyrimidine derivative and a preparation method thereof, and specifically relates to the crystal form of the compound of formula (I) and a preparation method thereof. The new crystal form has good physical and chemical properties, thereby facilitating clinical treatments.

Abstract: A vacuum cleaner is provided with a motor, and an impeller driven by the motor to rotate so as to generate suction airflow. The vacuum cleaner is further provided with an exhaust air duct, an air window wall for ventilation, a first noise reducer which is breathable, and a second noise reducer which is breathable. A tail end of the exhaust air duct is provided with an air duct outlet for air exhaust of the exhaust air duct, the air window wall is located downstream of the air duct outlet, the first noise reducer blocks the exhaust air duct, the second noise reducer is covered with an inner side of the air window wall, and an airflow discharged by the impeller flows through the exhaust air duct and sequentially passes through the first noise reducer, the second noise reducer, and the air window wall.

Abstract: Disclosed is a vacuum cleaner, including a dust collecting barrel, a machine head, a first buckle and a second buckle, the dust collecting barrel and the machine head are detachably assembled together by the first buckle and the second buckle, the machine head is provided with a motor, an air inlet window, an air outlet window, a first silencing member and a second silencing member, the air inlet window and the air outlet window are located on left and right sides of the machine head, a heat dissipation airflow for the motor enters the machine head through the air inlet window and is exhausted out of the machine head through the air outlet window, and the heat dissipation airflow passes through the air inlet window, the first silencing member, an interior of the motor, the second silencing member and the air outlet window in sequence.

Abstract: Provided are a pharmaceutically acceptable salt and a crystalline form of a GLP-1 receptor agonist and a preparation method therefor. Specifically, provided are a pharmaceutically acceptable salt and a crystalline form of a compound 2-((4-((S)-3-(4-chloro-2-fluorophenyl)-2,3-dihydrobenzo[b][1,4]dioxane-5-yl)piperidin-1-yl)methyl)-1-(((S)-oxe-tane-2-yl)methyl)-1H-benzo[d]imidazole-6-formic acid.

Abstract: The patent application discloses an air compressor. The air compressor comprises a pair of pistons, a motor, a flywheel, a pulley, a crankshaft. Each piston is reciprocable in a corresponding one of the cylinders so as to reciprocate along the axis of the corresponding cylinder to vary a working volume of the cylinder. The motor comprise an output shaft. The pully transmits torque from said output shaft to said flywheel so as to rotate said flywheel about said axis upon rotation of said output shaft. The crankshaft interconnects said flywheel with said piston so as to reciprocate said piston in said cylinder upon rotation of said flywheel. The diameter of the pulley is smaller than that of said flywheel.

Abstract: The patent application discloses an air compressor. The air compressor comprises at least two separate cylinder housings, a pair of pistons, a motor, a pair of head members, and a distribution valve unit. Each cylinder housing may define a cylinder with an axis. The axes are parallel and spaced apart. The pair of pistons has each piston being reciprocable in a corresponding one of the cylinders so as to reciprocate along the axis of the corresponding cylinder to vary a working volume of the cylinder. The motor may be positioned between the cylinder housings and drives the pistons so as to reciprocate the pistons. The pair of head members has each head member being fastened to a different one of the cylinder housings. The distribution valve unit may be positioned in between and next to the cylinder housings.

Abstract: Disclosed is a nursing machine, including a main unit, an excrement collector, a first connecting apparatus for connecting between the main unit and the excrement collector, the first connecting apparatus includes a plug connector assembly, and at least one communicating pipe for connecting between the plug connector assembly and the main unit; the plug connector assembly includes a first coil unit for supplying power to the excrement collector, and at least one first connecting port; the excrement collector includes an excrement groove for receiving human excrement, a second coil unit corresponding to the first coil unit, and a mating interface portion; the mating interface portion includes at least one second connecting port for correspondingly butting with the at least one first connecting port; and the plug connector assembly is able to be forwardly inserted into the mating interface portion to butting with the mating interface portion.

Abstract: Disclosed are an excrement collection apparatus and a nursing machine. The excrement collection apparatus is applied to the nursing machine and includes a wrapping pant member worn on a human body and a working head detachably combined with the wrapping pant member, the working head includes an excrement pool for accommodating human excrement, the wrapping pant member includes a connecting bracket detachably connected to the working head and an excretion port for human excretion, the connecting bracket is located on a crotch of the wrapping pant member, the connecting bracket is enclosed to form at least a part of the excretion port; in a state that the connecting bracket of the wrapping pant member is butted with the working head, the connecting bracket is attached to the working head, so that the excretion port and the excrement pool are combined together for human excretion.

Abstract: The patent application discloses a rotor for a motor. The rotor may comprise a shaft body, a shaft, a rotor magnet, and a plurality of air holes. The shaft body may have a first end, a second end, and a cylindrical body between the first end and the second end. The shaft may extend along a central axis of the shaft body. The rotor magnet on a magnetic slot inside the cylindrical body may be configured to rotate together with the shaft. The plurality of air holes on the first end of the shaft body may run through the cylindrical body and end in the second end of the shaft body.

Abstract: The patent application discloses a compressed air control device. The compressed air control device for a source of compressed air on motor vehicles may comprise a housing. The housing may include an air inlet opening located at an outside surface of the housing. The housing comprises an electric motor and an air dryer. The air dryer together with the electric motor forms a first functional unit.

Abstract: The patent application discloses a method of compressing air. The method for designing a more efficient reciprocating piston compressor comprising the steps of: providing an air compressor having a first compression stage adapted for compressing gas from a low pressure to an intermediate pressure and including a first piston connected to reciprocate in a first cylinder, a second compression stage adapted for compressing gas from the intermediate pressure to a higher pressure and including a second piston connected to reciprocate in a second cylinder, and a motor connected to reciprocate said first piston in said first cylinder over a stroke and said second piston in said second cylinder over a stroke; and establishing a sufficiently fewer number of strokes over which the gas to be pressured starting from the atmosphere pressure.

Abstract: Provided is a main unit of a nursing machine, including a sewage bucket accommodating sewage, a water blocking device, a first water tank, a second water tank, a water pump, a first waterway, a second waterway, and a third waterway. The water blocking device includes a labyrinth-type channel communicating with a water storage cavity and a float accommodation cavity, and multiple division boards extending up and down to perform separation to form the labyrinth-type channel. The labyrinth-type channel is located between the water storage cavity and the float accommodation cavity, and communicates between the water storage cavity and the float accommodation cavity. The second water tank is provided with a first water inlet and a first water outlet. The water pump joins the third waterway.

Abstract: The present disclosure provides a wind resistance type spinning bike, including a frame assembly. A fan assembly is installed at a front end of the frame assembly by a fan fixing assembly. A drive assembly is installed at a rear end of the frame assembly. The drive assembly is connected with the fan assembly by a multi-groove belt. The drive assembly may drive the fan assembly to rotate. Swing armrest assemblies are installed on two sides of the front end of the frame assembly, and are connected with the drive assembly by connecting rod assemblies. A seat cushion assembly is installed on an upper portion of the rear end of the frame assembly. By arranging the fan assembly, during operation by a user, the air flows to promote indoor air circulation, thereby enabling people to effectively persist in exercising and preventing heat stroke.

Abstract: Provided are a system and construction method of a single-layer lining tunnel structure based on a mine-tunnelling method. With the single-layer lining tunnel structure, a structural rigidity and durability of the tunnel are improved. A construction process of sprayed concrete is improved, specifically, compactness agent and durability enhancing fiber are added to concrete to improve the compactness of concrete, and a special spraying process is adopted to reduce a bound rate of the concrete, and thus to improve the impermeability of sprayed concrete to reach a impermeability level of waterproof concrete. Steel fiber, cellulose fiber, synthetic fiber and other materials are added into the concrete can improve the tensile strength, crack resistance and durability of the concrete.

Abstract: Provided are a system and construction method of a single-layer lining tunnel structure based on a mine-tunnelling method. With the single-layer lining tunnel structure, a structural rigidity and durability of the tunnel are improved. A construction process of sprayed concrete is improved, specifically, compactness agent and durability enhancing fiber are added to concrete to improve the compactness of concrete, and a special spraying process is adopted to reduce a bound rate of the concrete, and thus to improve the impermeability of sprayed concrete to reach a impermeability level of waterproof concrete. Steel fiber, cellulose fiber, synthetic fiber and other materials are added into the concrete can improve the tensile strength, crack resistance and durability of the concrete.

Abstract: The present disclosure provides a wind resistance type spinning bike, including a frame assembly. A fan assembly is installed at a front end of the frame assembly by a fan fixing assembly. A drive assembly is installed at a rear end of the frame assembly. The drive assembly is connected with the fan assembly by a multi-groove belt. The drive assembly may drive the fan assembly to rotate. Swing armrest assemblies are installed on two sides of the front end of the frame assembly, and are connected with the drive assembly by connecting rod assemblies. A seat cushion assembly is installed on an upper portion of the rear end of the frame assembly. By arranging the fan assembly, during operation by a user, the air flows to promote indoor air circulation, thereby enabling people to effectively persist in exercising and preventing heat stroke.

Abstract: The present disclosure relates to a crystal form of a pyridopyrimidine derivative and a preparation method thereof, and specifically relates to the crystal form of the compound of formula (I) and a preparation method thereof. The new crystal form has good physical and chemical properties, thereby facilitating clinical treatments.

Abstract: Disclosed is a nursing machine that includes a wearable working head and a urine detection circuit. The urine detection circuit includes at least two first urine sensors and at least two second urine sensors that are arranged on the working head. In response to more than one first urine sensor each outputting a liquid detected signal or in response to more than one second urine sensor each outputting the liquid detected signal, the urine detection circuit is configured to output a urine signal. In response to only one first urine sensor or only one second urine sensor outputting the liquid detected signal or in response to only one first urine sensor and only one second urine sensor each outputting the liquid detected signal, the urine detection circuit doesn't output the urine signal.