35results about How to "Hinder rotation" patented technology

Provided is a tapered roller bearing in which strength of a flange portion for receiving larger end surfaces of tapered rollers is ensured and the tapered rollers have a longer axial length so as to increase load rating. The tapered roller bearing includes: an inner race (51); an outer race (52); a plurality of tapered rollers (53) arranged so as to be rollable between the inner race (51) and the outer race (52); a retainer (54) for retaining the tapered rollers (53) at predetermined circumferential intervals; and a flange portion (56) provided only on a larger diameter side of a radially outer surface of the inner race (51), for guiding the tapered rollers (53). The retainer (54) includes: a larger-diameter-side annular portion (54a); a smaller-diameter-side annular portion (54b); and brace portions (54c) for coupling the larger-diameter-side annular portion (54a) and the smaller-diameter-side annular portion (54b) with each other. The larger-diameter-side annular portion (54a) is provided with hook portion (65) protruding to a radially inner side so as to be kept out of contact with the flange portion (56) of the inner race (51) during operation and brought into contact therewith only at a radially inner surface of the hook portion and a radially outer surface of a cutout portion of the flange portion during operation, and brought into contact therewith during non-operation. A maximum height dimension of the flange portion (56) of the inner race (51) is set to be equal to or more than 30% of a diameter of a larger end surface of each of the tapered rollers (53).

The invention discloses a drying device for tea processing. The drying device for tea processing comprises a rack, a first conveyor, a second conveyor belt, a cleaning drum and a drying drum, and water filtration holes are distributed in a second conveyor; a water inlet is formed in the bottom of the cleaning drum, multiple nozzles are installed in the cleaning drum, a push rod is connected to the rack, drying holes are distributed in the bottom in the drying drum, a helical guide slot is formed in the drying drum, and the push rod is connected in the helical guide slot in a sliding manner; a supporting frame is fixed to the rack, multiple pushing shafts are connected to the supporting frame in a sliding manner, pushing blades are axially and evenly distributed on the pushing shafts, and a driving rod is fixed to the multiple pushing shafts; and a protruding block is fixed to the cleaning drum, wheel teeth are fixed to the cleaning drum, a first gear is meshed with the cleaning drum, a main shaft is connected to the rack, and a first gear is fixed to the main shaft. Compared with the prior art, according to the drying device for tea processing, by means of matching arrangement of the cleaning drum and the drying drum, the cleaning quality of tea is better; the cleaning drum can rotate to indirectly drive the drying drum to rotate, and the drying efficiency of the drying drum is improved.

The invention aims to provide a preparation method of a novel magnesium alloy thick plate. The alloy comprises, by mass, 3.5-5.0% of Al, 2.0-3.5% of Zn, 0.1-0.8% of Mn, 0.01-0.80% of RE, 0.001-0.090%of Ca, less than or equal to 0.005% of Fe, less than or equal to 0.05% of Si, less than or equal to 0.005% of Cu, less than or equal to 0.005% of Ni and the balance Mg, and the total content of impurities does not exceed 0.1%, wherein the sum of the Al content and the Zn content satisfies the condition that Al+Zn is greater than or equal to 6% and less than or equal to 8%. Aiming at a novel Mg-Al-Zn alloy system, a forming process for preparing the large-size magnesium alloy thick plate with low anisotropy and high strength is developed to satisfy urgent demands of such fields as aerospace, weaponry and automobiles on the magnesium alloy thick plate with low cost and high performance.

A biomembrane process packing ball is of a non-plane symmetry impeller structure and comprises a spherical blade, an axis blade, tangential blades and radial blades.A plurality of water through holes are formed in the spherical blade which comprises upper semispherical blades and lower semispherical blades.The axis blade comprises upper semispherical blades and lower semispherical blades.The upper semispherical blades and the lower semispherical blades surround the upper semispherical axis blades and the lower semispherical axis blades at intervals.The upper semispherical axis blades and the lower semispherical axis blades are staggered by a certain angle.The adjacent upper and lower semispherical blades are in overlapped connection in a staggered mode.The radial blades are arranged at the overlapped connection and connected with the upper and lower semispherical axis blades.The upper and lower semispherical axis blades are of a three-fork type impeller structure.One fork corresponds to an arc connecting piece.The corresponding spherical blades and the radial blades are connected with the axis blades through the arc connecting pieces.The tangential blades are arranged between the two adjacent radial blades and form different included angles with the adjacent radial blades.The biomembrane process packing ball is large in specific area, more turbulent flows can be generated to achieve the better sewage treatment effect, cleaning is convenient, and the cost is low.

The invention discloses a polypropylene foaming material and a preparation method thereof, and belongs to the field of foaming materials. The polypropylene foaming material is prepared from the following components including, by weight, 60-80 parts of polypropylene PP resin, 5-10 parts of a foaming agent, 3-5 parts of an anti-aging agent, 1-3 parts of a diluent, 1-5 parts of a nucleating agent and2-4 parts of an antioxidant. The performance of the product is improved by adding the anti-aging agent and the antioxidant, and the exhaust rate can be automatically adjusted according to the foamingspeed in the preparation process so as to obtain the product with uniform and fine foam holes; an auxiliary plunger moves in a main plunger in the foaming process to enable a roller to rotate, then avertical rod does reciprocating motion up and down, a magnetic air blocking film is intermittently opened according to the principle that magnets with the same polarity repel each other, air is prevented from flowing back into a mold, meanwhile, an air blowing piece rotates under the action of repulsive force, the exhaust effect is further improved, and meanwhile gas backflow is prevented, so that gas generated by foaming is smoothly exhausted.

The invention relates to a self-adaptive adjusting screw driving device. A screwing assembly comprises a planetary gear set, a belt wheel, a sun wheel inner cylinder and a gear ring outer cylinder; the gear ring outer cylinder is in a big-end-up funnel shape, a threaded structure is arranged at the lower end in the gear ring outer cylinder and rotatably installed at the bottom of a containing space, and the gear ring outer cylinder stretches out of the bottom of the containing space; the sun wheel inner cylinder is sleeved with the gear ring outer cylinder, the threaded structure is arranged on the outer surface of the lower half portion of the sun wheel inner cylinder, the sun wheel inner cylinder is matched with the threaded structure in the gear ring outer cylinder, and the gear ring outer cylinder rotates to drive the sun wheel inner cylinder to horizontally move upwards; a sun wheel of the planetary gear set is installed on the sun wheel inner cylinder in an up-down sliding mode and can drive the sun wheel inner cylinder to rotate, and an outer ring gear of the planetary gear set is arranged in the gear ring outer cylinder; and the belt wheel is arranged on the sun wheel inner cylinder in a sleeving mode, the belt wheel and the planetary gear set are arranged at intervals, and the belt wheel is located above the planetary gear set and inserted into a planetary carrier of the planetary gear set so as to drive the planetary gear set to rotate.

The invention provides a heating layer structure of food material cooking equipment. A food material heating device comprises an upper shell and a heating layer positioned on the lower portion of theupper shell, a heating layer comprises a main box, a pot, a heating plate and a detecting mechanism, wherein the pot is arranged in the main box, the heating plate is arranged on the lower portion ofthe pot, and the detecting mechanism is arranged on the lower portion of the pot and used for detecting the pot. The upper shell covers the upper portion of the heating layer, a sealing structure is arranged between the upper shell and the heating layer, and the heating layer can horizontally rotate out of the lower portion of the upper shell. The space between the heating layer and the upper shell is sealed in the heating process, the heating layer can rotate out after heating, food is conveniently taken, the heating layer returns to a heating position after the food is taken, and the space between the heating layer and the upper shell is sealed again. The heating layer can rotate in and out on the premise of ensuring sealing, and a user can conveniently take the food. The pot is conveniently and accurately placed into the main box by the aid of the detecting mechanism, the heating plate is started to perform heating after being in place, and operation and control of a heating systemare facilitated.

The invention provides a sealing structure of foodstuff cooking equipment. A foodstuff cooking device comprises an upper shell and a heating layer located below the upper shell, the upper shell sealsthe upper portion of the heating layer, a sealing structure body is arranged between the upper shell and the heating layer, and the heating layer can horizontally rotate and can horizontally rotate out of the lower portion of the upper shell. The heating layer has a heating position located below the upper shell and an outward food taking device located on a lower shell; in the heating process, the heating layer and the upper shell are sealed, after heating is completed, the heating layer can be rotated out to conveniently take food, after the food is taken, the heating layer then returns to the heating position, and the heating layer and the upper shell are sealed. By means of the structure, on the premise of guaranteeing sealing, the heating layer is rotated in and rotated out, and a user conveniently takes the food.