6results about How to "Large caliber" patented technology

The utility model relates to the technical field of pet food processing, in particular to a pet food mixing machine convenient for feeding, which comprises a machine body, a feeding mechanism, a stirring assembly, a feeding pipe and a discharging groove, the machine body comprises a machine frame, the surface of the machine frame is fixedly connected with a mixing bin and a motor, the inner surface of the mixing bin is rotatably connected with the stirring assembly, and the outer surface of the mixing bin is fixedly connected with the feeding pipe and the discharging groove; and the expanding mechanism comprises a guide hopper. The feeding pipe is provided with the guide hopper and is connected with the guide hopper under the action of the sleeve, so that the guide hopper can expand the range of receiving fed pet food raw materials of the mixing machine, the caliber of an inlet of the feeding pipe is increased, and the situation that part of the raw materials fall on the outer side when being fed due to the small caliber of the feeding pipe is avoided; by means of the structure, feeding is convenient for workers, waste of food raw materials is reduced, meanwhile, the protruding blocks, the connecting holes and the inserting holes can be inserted more firmly through the springs, and then the guide hopper is installed more firmly.

The application discloses a design method of an off-axis coaxial combined optical system based on asymmetric aberration compensation, and belongs to the technical field of optical system design. The method solves the problem that asymmetric aberration introduced by an off-axis part in the design of an off-axis coaxial combined optical system is difficult to be corrected compatibly with the rotationally symmetric aberration of a coaxial part. The optical system comprises an off-axis front group and a coaxial rear group. The design method is as follows: active compensation design of asymmetric aberration is performed on the off-axis front group, and an initial structure is built according to design requirements; the initial structure is subjected to field offset; an evaluation function of the off-axis front group for the compensation of asymmetric aberration about the optical axis is constructed; the asymmetric aberration of the off-axis front group is compensated and adjusted until the function value of the evaluation function is the minimum value. Correction design of the remaining rotationally symmetric aberration is performed on the coaxial rear group; the off-axis front group and the coaxial rear group are integrated and optimized, and the design is completed. The design method can be applied to the optimization of an existing off-axis coaxial combined optical system.

Temporary enclosure (1) for at least a part of a rotor blade connected to a wind power plant having a tower and a rotor top part, the enclosure (1) comprising; • A framework (2) • One or more walls (3) • a roof (4); said roof extends from said wall towards said blade; said framework (2) stretching said walls (3) said that a volume is enclosed below the roof (4) wherein said framework (2) comprising one or more frame parts (5), a connection (6) for connection of the one or more frame parts (5) and an activation means (7) for activation a change in the framework (2) whereby the volume enclosed by the enclosure (1) change.

The application provides an antenna, a circuit board and an electronic device. The antenna comprises a first radiator and a second radiator arranged on a substrate. The substrate has a first structure layer and a second structure layer. The first structure layer is provided with a first hollow area, and the second structure layer is provided with a second hollow area. The first radiator is arranged in the first hollow area, and the second radiator is arranged in the second hollow area. The first radiator and the second radiator are arranged in a spaced manner along the thickness direction of the substrate. The substrate further has a ground layer. Two ends of the second radiator are connected to the ground layer for grounding. The first radiator is provided with a first gap, and a first end of the first radiator is connected to the ground layer for grounding. The antenna can effectively increase the aperture of the radiator, so that the magnetic field distribution of the antenna is more uniform, thereby effectively reducing the required clearance area of the antenna under the condition of meeting the same antenna performance, and further helping the miniaturization of the electronic device.

The utility model discloses a large-caliber horizontal screw juicer, which comprises a base, a screw body, a juicing cylinder assembly, a cover body, a filter screen and an end cover, the base is provided with an output shaft, the screw body is connected to the output shaft, the juicing cylinder assembly comprises a connecting cylinder and a feeding cylinder connected to the connecting cylinder, the connecting cylinder and the feeding cylinder are arranged in a staggered manner, and the cover body is arranged on the connecting cylinder. One end of the connecting cylinder is connected to the machine base, the connecting cylinder is provided with a containing cavity, the containing cavity is provided with a juice outlet, the feeding cylinder is provided with a feeding channel communicated with the containing cavity, the screw body is contained in the containing cavity, and the maximum cross section area of the containing cavity along the axis perpendicular to the connecting cylinder is smaller than the maximum cross section area of the feeding channel along the axis perpendicular to the feeding cylinder. The cover body is movably connected to the end, away from the connecting cylinder, of the feeding cylinder, the filter screen is arranged on the periphery of the screw body in a sleeving mode and contained in the containing cavity, the filter screen is provided with filter holes, the end cover is arranged at the other end of the connecting cylinder, the end cover is provided with a residue discharging opening, whole fruit and vegetable squeezing and juicing without cutting of fruits and vegetables can be achieved, and use by a user can be facilitated.

A multi-stage centrifugal pump with reduced cavitation, relates to a centrifugal pump, the multi-stage centrifugal pump suction pipe, cooling water cavity and suction section are connected by welding;Front pump cover (4) and winding pad (5) are installed on suction section component (11) through front pump cover fastener (29), which constitutes stator suction component;First stage impeller (28) and first stage impeller baffle (27) are installed on pump shaft (1) and penetrate into stator suction component assembly;Through the bar (8) through the suction section component (11) installation flat pad (10) and nut (9);First stage sealing pad (6) and sealing ring (12) are installed on the first stage middle section (7), and are installed with the stator suction component;The multi-stage centrifugal pump effectively avoids the occurrence of cavitation, ensures the safe and stable transportation of process medium close to the gasification point. It is suitable for the transportation of various media, especially for the transportation of process medium close to the gasification point.