89results about How to "Avoid frictional heat" patented technology

A shaft sealing device includes a seal assembly equipped with a fitting part having a fitting surface hermetically fittable within a hole defining surface of a housing and a rubber elastomer first seal lip extending inward from the fitting part and having a seal surface which seals a fluid inside an internal boundary thereof. A seal sleeve made of metal or resin material is equipped with a slide seal surface that is in slidable contact with the seal surface of the first seal lip. A concave rotor surrounds a seal surface region defined at a longitudinal end of the slide seal surface, and includes a close-contact fitting surface that is hermetically fitted to a rotary shaft. A discharge port defined by the rotor facilitates the sealed fluid being pushed back to the rotor in a direction extending away from the seal surface region.

In a fuel injection pump, a tappet is provided on an end thereof on a side of a cam ring with a hollow. Force acting on the tappet from a plunger due to fuel pressure is dispersed to a sliding contact surface outside the hollow so that contact face pressure between the tappet and the cam ring is smaller. As the fuel pressure becomes higher, larger resilient deformation of the tappet causes a diameter of the hollow smaller so that the tappet comes in flat slidable contact with the cam ring, resulting in preventing the contact portion between the tappet and the cam ring from being seized with frictional heat.

The invention relates to the field of anti-theft locks, in particular to a disposable safety seal used for containers and cargo boxes. The disposable safety seal comprises a lock rod and a lock sleeve; a snap spring is arranged in the inner cavity of the lock sleeve; the snap spring is elastically blocked and matched with the inner wall of the lock sleeve; the front end of the lock rod is inserted in the inner cavity of the lock sleeve; and a necking part at the front end of the lock rod is elastically blocked and matched with a bayonet of the snap spring; and the radial size of the rear end of the lock rod and the radial size of the lock sleeve are larger than that of a body of the lock rod. The disposable safety seal is characterized in that: the front end of the inner cavity of the lock sleeve is thick, the rear end is thin, and the middle part is a reducing transition section; the size of the snap spring along the coaxial direction of the lock rod is smaller than the coaxial sizes of the middle part and the front part of the inner cavity of the lock sleeve; the snap spring driven by the lock rod can move front and back in the middle part and front part of the inner cavity of the lock sleeve along the coaxial direction of the lock rod; and the transition section has stronger centering capacity on the snap spring and the lock rod and the function of tightening the snap spring, and can guarantee to clamp the necking part of the lock rod. The seal has high stability and high safety.

The invention discloses a series motor water-cooling structure comprising a motor rotor, a stator, a commutator, and a cooling pipe. The cooing pipe is mainly composed of two mutually-communicated parts, namely, a part near the outer surface of the commutator and a part adhered to the outer surface of the stator. A water inlet and a water outlet of the cooling pipe are respectively disposed at the two sides of a motor shell. By adopting the device, the size of a fan is reduced, the air volume is reduced, the defect of motor air-cooling is overcome, a series motor can be cooled effectively, and a high-power series motor is made possible.

The invention discloses an overall four-point contact ball bearing with a seal. The overall four-point contact ball bearing comprises an outer ring, an inner ring, a steel ball, a retainer, a retainer ring, a sealing ring and a screw, wherein a contact angle of the bearing is 45 degrees; the bearing has a negative play; steps are arranged in two end faces of the outer ring; screw holes connected with the retainer ring are uniformly formed in the circumference of each stepped surface; outer ring roller paths (8) with the same diameters and curvatures are formed in the circumference of the inner wall of the outer ring; sealing grooves are respectively formed in two flanges of the inner ring; the labyrinth seal is formed between the two flanges of the inner ring and the inner diameters of the two retainer rings; oil holes are formed in the inner diameter surface of the inner ring; inner ring roller paths opposite to the outer ring roller paths are formed in the circumference of the outer wall of the outer ring. The overall four-point contact ball bearing has the characteristics of being compact in structure, high in reliability, high in sealing performance, good in mounting performance, free from maintenance and the like, can simultaneously bear high axial and radial combined loads, and is high in upsetting moment and wide in service condition range.

The invention provides a petroleum-based storage device. The petroleum-based storage device includes a base, a shell and a cooling device. The bottom of the shell is fixed to the top of the base, a feed chute is disposed at the top of the shell, and a filter plate is arranged in the feed chute. The bottom of the cooling device is fixed to the top of the shell, and the cooling device is located onthe right side of the feed chute. The cooling device includes an air cooler. According to the petroleum-based storage device, due to the limitation of a moving platen, petroleum cannot be shaken violently, petroleum transportation is more stable, and the petroleum is prevented from heat generation by friction by a large margin to increase potential safety hazards; the air cooler continuously blowscold air into the shell, so that the petroleum is in a low-temperature state, the continuously blown cold air can cause the internal pressure of the shell to be too high, by starting a second motor,an exhaust port is intermittently exposed for exhaust, and a low-temperature storage environment for the petroleum is ensured.

The invention discloses a magnetic fluid coupling passive suspension type double-suction centrifugal blood pump. The magnetic fluid coupling passive suspension type double-suction centrifugal blood pump is characterized in that a rotor provided with impellers and a threaded groove is embedded into a volute cavity provided with two inlets, the shapes of the inlets become wider from narrow, suspension permanent magnet sheets are mounted at two ends of the rotor, and suspension permanent magnet rings are arranged in a volute. The rotor adopts a conical outer surface, and an equal-pitch thread groove is formed in the outer surface; the impellers are mounted on the rotor and integrally connected; blood flows into the volute cavity through the inlets in the two sides of the volute, a rotating magnetic field is generated after a motor coil is powered on, the suspended permanent magnetic sheets in the rotor are driven to rotate, the impellers are driven to rotate, the blood flows out of an outlet of the volute, and the outer surface of the conical rotor and the threaded groove jointly achieve the effect of draining the blood; and static pressure supporting force is provided for suspensionof the rotor by a blood film in the gap of the impellers and the inner wall of the volute, permanent magnet suspension and hydraulic static pressure support jointly guarantee that the rotor is suspended in the volute, and adverse factors such as abrasion and frictional heating between the rotor and the volute are reduced. The magnetic fluid coupling passive suspension type double-suction centrifugal blood pump is compact in structure, high in efficiency, large in flow and small in axial force, energy consumption of the blood pump is reduced, and development of the blood pump to the fourth-generation non-contact bearing type artificial heart is facilitated.

The invention discloses a gas filled tank load switch fuse-combination unit mechanism. The gas filled tank load switch fuse-combination unit mechanism comprises a front plate, a rear plate, a closingspring, a motor and a switch-on and switch-off cam welding wire outlet mechanism. The front plate and the rear plate are separately arranged at the two ends of the mechanism, and the front plate and the rear plate are arranged in parallel. The gas filled tank load switch fuse-combination unit mechanism has the beneficial effects that a mechanism transmission mode is changed by the gas filled tankload switch fuse-combination unit mechanism, the mechanism transmission structure is optimized, good transmission property of the mechanism is ensured, and transmission operation is accurate and stable; a hexagonal shaft, a positioning shaft, a shaft III, a shaft IV and a shaft V are arranged between the front plate and the rear plate and perpendicularly penetrate through the front plate and the rear plate, and the strength and firmness of the integral mechanism during working are improved; shaft bodies are protectively isolated by shaft sleeves, friction and collision of the shaft bodies arerelieved, and the service lives of the shaft bodies are prolonged; and the electrical mechanism is high in sensitivity during working, is firm and durable, has good social benefit, and is suitable forbeing popularized and used.

The invention discloses an independent front suspension with a transversely arranged steel plate spring. The independent front suspension with the transversely arranged steel plate spring comprises a left front shock absorber and a right front shock absorber both provided with a limiting block, left and right steering knuckles, a steel plate spring, and a steady rod component, wherein left and right lower swing arms are respectively connected with the left and right steering knuckles through lower swing arm ball pins; the transversely arranged steel plate spring is composed of two transversely arranged upper and lower steel plate springs with variable cross-sections; the middle part of the steel plate spring is connected with a car body; the central line of the steel plate spring is consistent with an X-direction of a wheel center of a wheel; two ends of the steel plate spring are connected with the left and right lower swing arms through a vulcanized rubber component; the shock absorbers are arranged vertically in a front view of a car, inclined backwards in a side view thereof and have an included angle alpha of 2-4 degrees with the axial line. The independent front suspension, disclosed by the invention, has the advantages of compact arrangement, rational structure, relatively low manufacturing and processing cost; the transversely arranged steel plate spring is mutually matched with a single-angle shock absorber, so that the car can achieve relatively ideal comfort level in any load state, good operational stability of a McPherson suspension is continued, and internal space of the car is further maximized; and obvious improvements in the aspects of overall performances, cost and the like are achieved.

The invention discloses a formula of compound bearded-tooth-mushroom walnut powder and a preparation method of compound bearded-tooth-mushroom walnut powder. The compound bearded-tooth-mushroom walnutpowder is composed of bearded tooth mushroom powder, soybean powder, walnut powder, peanut powder, linolenic acid, soybean phospholipids, maltodextrin, skimmed milk powder, white granulated sugar, glucose, vitamin B complex, vitamin E, vitamin C and dietary fiber; and thus, the compound bearded-tooth-mushroom walnut powder is refreshing, fine and smooth in taste. The formula of the compound bearded-tooth-mushroom walnut powder disclosed by the invention fully utilizes nutrients of the bearded tooth mushrooms, the walnuts, the soybeans, the peanuts and the linolenic acid, as well as a plurality of vitamins, so as to enhance adjustment of the nutrients of the compound bearded-tooth-mushroom walnut powder on body functions; and the compound bearded-tooth-mushroom walnut powder has the effects of strengthening the stomach, nourishing the blood, moistening the lungs, attaining mental tranquility, resisting cancer and so on, and is capable of improving body health. In addition, being subjected to processing on basis of a production technology, the formula of the compound bearded-tooth-mushroom walnut powder disclosed by the invention is capable of improving water solubility of the raw materials, as well as increasing active ingredient content.

The present invention is configured by a wood screw main body, and a truncated cone-shaped washer that is rotatable in relation to a head of the wood screw main body such that a top surface of the head and a top surface of the truncated cone-shaped washer are substantially on the same plane, and attached so as not to detach from the head. When a retainer element is secured by the wood screw to a wood material to be supported, frictional heat can be prevented from occurring in the retainer element, and the retainer element can be secured by only the fastening force of the wood screw. The retainer element can be efficiently prevented from breaking, and attached such that the head of the wood screw and the surface of the retainer element are on the same plane.