49results about How to "Reduce wear effect" patented technology

The invention discloses a blood pump and a power transmission assembly thereof, and the power transmission assembly of the blood pump comprises: a flexible shaft used for driving an impeller of the blood pump to rotate, wherein the flexible shaft is provided with a near end for inputting power and a far end for arranging the impeller; a first flow channel which is used for filling fluid to flow, wherein the first flow channel is provided with an output end adjacent to the near end and used for outputting perfusion fluid and an input end adjacent to the far end and used for inputting perfusion fluid. According to the blood pump and the power transmission assembly thereof, the risk caused when perfusion liquid enters the body of a patient can be reduced.

The invention relates to a gap seal (6) for sealing a gap (3) between two adjacent components (1, 2), in particular of turbo machines, with the following characteristics: each component (1) has one each groove (7) that is open towards the gap (3), the two grooves (7) are essentially facing each other in the gap (3), in each groove (7), a compensation body (16) is movably positioned transversely to the longitudinal groove direction and parallel to the gap plane (10), each compensation body (11) abuts the groove bottom (9) of the corresponding groove (7) in a sealing manner, each compensation body (11) has a V-shaped receiving groove (14) that is open towards the facing compensation body (11), a mutual sealing body (16) has a rhombus-shaped cross-section and projects with outer sides (17) into both receiving grooves (14), the straight inner sides (15) of each receiving groove (14) are angled towards each other at the same angle as the straight outer sides (17), in each receiving groove (14), at least one outer side (17) of the sealing body (16) abuts the corresponding inner side (15) of the receiving groove (14) with surface contact and in a sealing manner.

The invention relates to a rotary type inertia piezoelectric actuator with a built-in photoelectric encoder, and an actuation method of the same. The rotary type inertia piezoelectric actuator with a built-in photoelectric encoder is formed by a housing, an output shaft, actuation pieces, bearings, a code disc, a photoelectric detection assembly and a printed board, wherein the housing pedestal is provided with the output shaft through the bearing; the lower middle part of the output shaft is provide with a disc with a large section through integrated processing; the lower surface of the disc is pasted with the code disc; a photoelectric detection board and the printed board are fixed below the code disc; and the code disc, the photoelectric detection board and the printed board form a photoelectric encoder; a first actuation piece and a second actuation piece which are in interference fit with a piezoelectric stack are fixed on the inter side wall surface of the housing, and are distributed central-symmetrically with the shaft center point of the output shaft on the plane; and the bottoms of the first actuation piece and the second actuation piece are each provided with a friction foot which are closely pressed on the upper surface of the disc. The rotary type inertia piezoelectric actuator with a built-in photoelectric encoder is novel in structure and reliable in clamping, has the function of measuring the output angle in real time, and can efficiently and stably realize bidirectional rotation.

The invention discloses a low-stress optical fiber cable take-up and pay-off device. The low-stress optical fiber cable take-up and pay-off device comprises a trailer body, a plurality of take-up andpay-off cylinders, speed regulating assemblies and cable moving assemblies, wherein the trailer body is connected with a rolling main shaft; the plurality of take-up and pay-off cylinders are used fortaking up and paying off different optical fiber cables and penetrate through the outer side of the rolling main shaft; each speed regulating assembly is connected to one side of the corresponding take-up and pay-off cylinder and used for regulating the take-up and pay-off speed of the take-up and pay-off cylinder; and each cable moving assembly is connected to the other side of the correspondingtake-up and pay-off cylinder and used for synchronously moving the taken-up and paid-off optical fiber cables at the take-up speed of the take-up and pay-off cylinders. Each speed regulating assemblyis installed on one side of the corresponding take-up and pay-off cylinder, so that the optical fiber cables at the take-up and pay-off cylinders can be conveniently taken up at different rotating speeds; selective movements of the take-up and pay-off cylinders are achieved at transmission pieces, so that take-up and pay-off speeds can be conveniently selected for the different optical fiber cables, and the influence of the optical fiber cables with the low take-up and pay-off speed on the optical fiber cables with the high take-up and pay-off speed is reduced; and meanwhile, through the arranged cable moving assembly, the abrasion influence on the optical fiber cables can be reduced conveniently in the optical fiber cable dragging process.

The invention discloses a locking mechanism. The locking mechanism comprises a locking pull rod and a limiting opening, wherein a connecting end and a fixing module are arranged on the locking pull rod; the fixing module is fixedly connected or movably connected with the locking pull rod; the locking pull rod is movably connected with equipment using the locking mechanism through a connecting end; the limiting opening is connected with the equipment using the locking mechanism; and when the locking mechanism is closed, the locking pull rod and the limiting opening are fixed together through the fixing module in a contacting way. The locking mechanism disclosed by the invention is advantaged in that the structure is simple, the closing and unlocking processes are both simple and convenient, and an effect of rapidly detaching a battery from equipment with the battery through the locking mechanism can be especially achieved; and moreover, as the wear impact of the locking method of the locking mechanism on machinery is less, the service life of the machinery is long; in addition, as the locking mechanism has the simple structure, the locking mechanism can be widely applied to various equipment. As the locking mechanism is simple while being used for manufacturing or temporary mounting, the industrial production cost is greatly saved.

The invention discloses an improved AAO water treatment system and a sewage processing method thereof. The improved AAO water treatment system comprises an anaerobic reactor, an anoxic reactor, an aerobic reactor, and a settling tank, which are connected in sequence. The aerobic reactor is connected to the anoxic reactor through an inner backflow pipeline. The settling tank is connected to a pre-de-nitrification tank through a sludge outer backflow pipeline. The pre-de-nitrification tank is connected to the anaerobic reactor. The fluid inlet end of the pre-de-nitrification tank is connected toa first branch of a raw sewage inlet pipe, and a second branch of the raw sewage inlet pipe is connected to the anaerobic reactor. Compared with a conventional A2O method, a pre-de-nitrification tankis arranged before an anaerobic tank; the backflow sludge and raw sewage of a settling tank are introduced into the pre-de-nitrification tank; organic substances in the raw sewage are utilized by microbes as a carbon source to carry out de-nitrification; the performance of a conventional AAO system on reducing the influence of backflow nitrate is improved; the bad influence of nitrate nitrogen onanaerobic phosphorus release is eliminated; the phosphorus removing effect is ensured; and the nitrogen removing effect is guaranteed at the same time.

The invention discloses a chain for an agricultural harvester and a chain accessory for the agricultural harvester. The chain for the agricultural harvester comprises multiple shaft rollers which are arranged longitudinally and multiple chain bodies which are transversely arranged on the shaft rollers side by side, wherein each chain body comprises multiple chain link units, and each chain link unit comprises a first chain link and a U-shaped second chain link. According to the chain for the agricultural harvester, the second chain links of the U-shaped structure are adopted, the stress direction is parallel to fixing plates on the second chain links when the chain is used, impact resistance is achieved, and the service life is prolonged.

The invention provides a mounting structure of a parking air conditioner and a control method thereof. The mounting structure is used for mounting an outdoor unit of the parking air conditioner and comprises a mounting frame, a mounting cover and a gas damping device, the mounting frame is mounted on a cab, the outdoor unit is mounted in a containing cavity formed by the mounting frame. A mounting cover is arranged on the outer side of the mounting frame, the mounting cover is connected with the cab, the gas damping device comprises a first-stage gas damping device and a second-stage gas damping device, the first-stage gas damping device is arranged on the mounting frame, and the second-stage gas damping device is arranged on the mounting cover. According to the installation structure of the parking air conditioner and the control method thereof, the installation cover can comprehensively cover the installation frame and the outdoor unit, the protection effect on the outdoor unit is improved, and the installation frame and the outdoor unit can be prevented from falling off from an automobile; after being inflated, the gas damping device not only plays a role in fixing the outdoor unit, but also plays a role in absorbing vibration of the outdoor unit.

The invention relates to angle seat valves, and discloses a double-eccentric butterfly valve. The double-eccentric butterfly valve comprises a valve body, a shaft rod and a disc plate, wherein the valve body is provided with a sealing face, and a step with an annular shape is arranged at the inner edge of the sealing face; an annular first sealing ring is arranged at the step, an annular first groove is formed in the middle of the first sealing ring, the top of the outer wall of the first groove extends outwards to form an annular boss, and the bottom face of the boss is tightly attached to the sealing face; and the upper part and the lower part on the inner side of the inner wall of the first groove are divided into two inclined faces which are inclined inwards, a second sealing ring is further inlaid on the sealing face, and an insert covering the sealing face is further arranged at the sealing face. According to the valve, the first sealing ring and the second sealing ring cooperatefor sealing, moreover, the structure of the first sealing ring is improved, several seals are formed by the inner wall and the outer wall of the first sealing ring during sealing, so that the influence of the outside on the sealing performance is reduced; in addition, the friction between the disc plate and the first sealing ring is reduced, the torque of the disc plate is small, and the servicelife is long; and the upper part of the shaft rod is of a stepped structure, so that the shaft rod can be prevented from being blown out due to accidental breakage.

A hopper tee having a horizontal portion through which granular material is unloaded from a tank trailer or hopper car, the hopper tee integrally forms a vertical segment, that secures with the bottom of the hopper, to provide for unloading of granular material for usage or storage. The upper front portion of the tee, as it transitions from its vertical segment to the horizontal flow path has secured or cast therewith a ledge, that provides for accumulation of the unloading granular material therein, to function as a wear pad to resist against abrasion, and accelerated wear out, of the tee, at that location, during prolonged usage.

The invention discloses a built-in rotary encoder for detecting the rotation speed, which comprises a connecting seat, a base and a rotating shaft. The bottom of the connecting seat is provided with the base, the top of the base is provided with the rotating shaft, the top of the connecting seat is provided with an upper bearing, and the top of the upper bearing is connected to the bottom of the outer surface of the rotating shaft; a connecting shaft is connected to the middle of the outer surface of the rotating shaft, a coding disc is mounted in the middle of the outer surface of the connecting shaft, and a mounting base is arranged on one side of the top of the coding disc. Through the arrangement of the coding disc and a speed measurement module, after a power line assembly is connected with an external power source, the whole device is driven to work, the coding disc works along with rotation of the rotating shaft, when the rotating shaft works, the speed measurement module can synchronously carry out speed measurement work, and therefore the speed measurement function of the device is added; and a light detector, a light source assembly, a photoelectric emission unit and a photoelectric receiving module are arranged in the device work, so that the whole device is driven to work normally.