216 results about "Prevention types" patented technology

The invention relates to a clamp ESD protection circuit for a latch-up prevention type power supply, and relates to the technical field of electronic static discharge protection design of integrated circuit chips. The clamp ESD protection circuit for the latch-up prevention type power supply comprises a transient trigger module, a direct-current voltage detection module and a discharge transistor. Triggering of the discharge transistor of the clamp ESD protection circuit for the latch-up prevention type power supply is achieved through the transient trigger module, and maintenance of the start state of the discharge transistor is achieved through the direct-current voltage detection module. If the clamp ESD protection circuit for the latch-up prevention type power supply is mistakenly triggered by high-frequency noise, the circuit is automatically out of the mistaken trigger state in a short time, and the latch-up phenomenon is effectively prevented.

The invention discloses a dislocation prevention type non-fusion artificial cervical vertebra and intervertebral disc system comprising a vertebra body component and two end plate components, wherein the end plate components are connected to the upper end and the lower end of the vertebra body component respectively through a dome joint structure and L-type dislocation prevention structures on the front side and the rear side. End plate fixing screws are arranged on the two end plate components respectively. After corpectomy, the system can play a role in supporting at once, the motion function of the normal cervical vertebra is replaced through own interbody connecting parts, stress of the cervical vertebra can be dispersed in the motion process, internal stress of adjacent segment intervertebral discs and zygapophyseal joints can be reduced, and degeneration, which is caused by fusion, of the adjacent segments can be effectively prevented. In addition, stable bony fusion can be achieved through bone grafting and a hydroxyapatite coating on the surface of the system. The operation difficulty is small, trauma is small, and the system is convenient to popularize. Due to the fact that the dislocation prevention positions of the system are arranged, long-period stability can be achieved after the operation.

The invention discloses a myopia-prevention type wearable device. The wearable device is worn at the forehead part of the head of a user. The device internally comprises a power supply module, a head posture measurement module, an infrared distance measurement module, a data acquisition and processing module, an alarm module and a wireless communication module. The power supply module is respectively connected with the head posture measurement module, the infrared distance measurement module, the data acquisition and processing module, the alarm module and the wireless communication module so as to power on the above modules. The data acquisition and processing module is respectively connected with the head posture measurement module, the infrared distance measurement module, the alarm module and the wireless communication module. According to the technical scheme of the invention, an alarm is sent to a wearer to remind the wearer when the wearer gets too close to a writing desktop or a reading object. Therefore, the myopia prevention is achieved. Meanwhile, whether the wearer is just lowering his/her head to read or write or not can be effectively judged. As a result, no wrong alarm prompt is sent out.

Provided is an anti-expansion type button li-fes 2 battery and the manufacture method, including an anode case and a cathode case, wherein an anode and a cathode are arranged in the case, and a film is arranged between the anode and the cathode. The case is filled with electrolyte; an elastic metal sheet is arranged between the anode and the opposite anode case. The film is polypropylene with the micropore, or polyethylene with the micropore. The anode material is composed of iron disulphide, conduction agent and adhesive; the cathode is composed of metallic lithium, lithium aluminum alloy or aluminum silicon alloy. The electrolyte is the solution in which lithium salt is dissolved in the ethylene carbonate. The elastic metal sheet is selected from one of foaming nickel, fiber nickel, foaming copper, foaming aluminum, stainless steel spring sheet, aluminium spring sheet and nickel spring sheet. The invention causes the active material fully to contact with the current collector, advances the utilance of the active material, refrains expansion of the anode in the cell discharging process, reduces the falling of the active material, reinforces the discharging ability of the large current of the cell, advances the discharging capacity of the cell, simplifies the production technology of the cell, which is suitable for the large-scale industrialization production.

A winding prevention type multifunctional high-frequency scalpel of an endoscope comprises a scalpel head (1) and a core pin (5). A rotating handle (8) is arranged at one end of the core pin (5), and one end of the scalpel head (1) is fixedly inserted into the core pin (5). The winding prevention type multifunctional high-frequency scalpel of the endoscope is characterized in that a liquid injection hole (2) is arranged in the scalpel head (1), one end of the liquid injection hole (2) is communicated with a liquid spraying hole at a scalpel tip of the scalpel head (1), the other end of the liquid injection hole (2) is communicated with a liquid injection connecting tube (6), the liquid injection connecting tube (6) extends out of the core pin (5) to be communicated with a liquid source, the core pin (5) is movably inserted in a slider (4) and can be driven to rotate relative to the slider (4) by the rotating handle (8), a conductive plug mounting sleeve (9) capable of rotating relative to the core pin (5) is sleeved at the other end of the core pin (5), a conductive plug (7) is fixed in the conductive plug mounting sleeve (9), one end of the conductive plug (7) contacts with one end of a conductive spring (10) in an abutted manner, the other end of the conductive spring (10) contacts with a conductive ring or conductive steel ball (11) in an abutted manner, and the conductive ring or conductive steel ball (11) slidably contacts with the scalpel head (1). The winding prevention type multifunctional high-frequency scalpel is simple in structure and flexible in operation, andcan reduce complications.

The invention discloses an outward flow prevention type membrane rupture device for obstetrics and gynecology department. The outward flow prevention type membrane rupture device comprises a catheter, wherein a pull rod sleeves one end of the catheter; the other end of the catheter is connected with a conical head and an anti-flow cover; the conical head is positioned inside the anti-flow cover; one end, near the conical head, of the pull rod is provided with a piston; the piston and the inner wall of the catheter are in matched installation; a support frame is fixedly arranged on the inner wall of the catheter; a membrane rupture needle is arranged on the support frame; a through hole is positioned between the support frame and the conical head; the through hole is connected with an inlet end of a buffer box through a water pipe; the water inlet end of the buffer box is provided with a valve; the buffer box is positioned in a support box; one side surface of the support box is fixedly connected with the side surface of one support leg; one end of each support leg is provided with a universal wheel. The structure of the whole device is simple; the operation is convenient; the injury on fetuses and envelopes in the membrane rupture process is effectively avoided; the outward flowing of amniotic fluid is prevented; the child delivering difficulty of medical care personnel is greatly reduced.

The invention discloses a gas etching prevention type centrifugal pump. The gas etching prevention type centrifugal pump comprises a centrifugal pump, and is characterized by further comprising a water storage pipe section, a water suction pipe section and a piston pumping pipe section, wherein the centrifugal pump is connected with the water storage pipe section by virtue of a water pipe; one end of the water suction pipe section is connected with the water storage pipe section; the other end of the water suction pipe section is connected with a water storage device; one side of the water storage pipe section is connected with the piston pumping pipe section; and one end of the piston pumping pipe section is connected with a motor. The gas etching prevention type centrifugal pump disclosed by the invention has the benefits that a section of water inlet pipe is mounted at the water inlet of the original centrifugal pump, and air sucked by the centrifugal pump is reduced, so that an effect of protecting the blades and the motor of the centrifugal pump is achieved, and the gas etching problem caused to the blades and an air bind phenomenon to the motor can be avoided in the centrifugal pump operating process.

The invention provides a low-pressure-drop foreign matter prevention type lower pipe seat of a fuel assembly. The lower pipe seat comprises a supporting framework and a lower pipe seat grating fixed above the supporting framework, wherein the lower pipe seat grating comprises two layers of plates, the plate on one layer is a macroporous plate, and the plate on the other layer is a grid plate arranged above or below the macroporous plate; the grid plate is of a netty grid structure composed of vertical slices; the macroporous plate is of a flat plate structure matched with the grid plate in size, and a plurality of columns and rows of drain holes are uniformly formed in the macroporous plate; and each large circular drain hole is divided by grids of the grid plate into a plurality of parts on the overlooking projection, and each large circular drain hole is formed to avoid the projection position of a fuel bar. According to the lower pipe seat of the fuel assembly, provided by the invention, has the function of uniform flow rate distribution and can realize the balance of the strength, pressure drop and a foreign matter prevention function of the lower pipe seat as the macroporous plate is matched with the grid plate. The grid plate structure ensures the sufficient foreign matter filtering capability after the aperture is increased.

The present invention relates to a static electricity prevention type liquid crystal display panel for preventing static electricity flowing in through a pad part. A static electricity prevention type liquid crystal display panel according to an embodiment of the present invention includes a picture display part having a plurality of liquid crystal cells; a signal pad part applying a drive signal to be inputted to signal lines of the picture display part, and wherein the signal pad part includes a plurality of pads connected to the signal lines; and a static electricity prevention circuit having a thin film transistor with a floating gate for connecting the pad with a shorting bar by a static electricity flowing into the pad for the pad to form an equipotential with respect to the static electricity.

The invention discloses a dust prevention type mining drilling machine. The dust prevention type mining drilling machine comprises a lower support and an upper support, a plurality of damping devicesare arranged between the lower support and the upper support, supporting columns are left-right symmetrically arranged on the upper side of the upper support, a lifting cavity is formed in the inner side of each supporting column, a first motor is arranged at the upper end of each supporting column, a threaded rod is arranged at the output end of each first motor, a lifting seat is arranged on each threaded rod, a lifting plate is arranged between the two lifting seats, a rotary shaft is arranged in the middle of the lifting plate, a second motor is arranged on the upper side of the lifting plate, a driving wheel is arranged at the output end of the second motor, a driven wheel is arranged at the upper end of the rotary shaft, a drilling cylinder is arranged at the lower end of the rotaryshaft, the drilling cylinder comprises an excavation cylinder, the upper end of the excavation cylinder is fixedly connected with the lower end of the rotary shaft, a plurality of telescopic devices are arranged on the upper portion of the outer side of the excavation cylinder, and excavation sheets are arranged at the outer ends of the telescopic devices. The dust prevention type mining drillingmachine is simple in structure and convenient to use, can adjust the diameter of drilling, and is wide in application range and long in service life.

The invention discloses a collapse prevention type water reducing agent which is prepared by mixing the following raw materials in parts by weight: 48-62 parts of methyl naphthalenesulfonate formaldehyde condensate, 24-36 parts of polycyclic aromatic hydrocarbon sulfonate formaldehyde condensate, 16-28 parts of glycerinum polyoxyethylene ether ethylhexoate, 15-20 parts of porous calcium phosphate, 10-15 parts of rock wool powder, 5-10 parts of sodium polystyrenesulfonate, 5-10 parts of aloe powder, 4.5-6.5 parts of squalane, 3-5 parts of diisobutyl methanol, 2-4 parts of sodium alginate oligose, 2.5-4.5 parts of sodium hyaluronate, 6-12 parts of sand powder, 10-15 parts of volcanic ash, 3-6 parts of lauric acid diglycollic amide, 4-8 parts of hydroxypropyl guar gum powder and 3-6 parts of additives. The collapse prevention type water reducing agent disclosed by the invention is excellent in collapse prevention, small in collapse loss and high in water reduction rate, can avoid separation or bleeding, and is remarkable in concrete reinforcement effect, good in concrete adaptability and particularly good in adaptability for middle/low flowbility concrete in a high-temperature environment in summer.

The invention relates to a space debris prevention type heat radiator, which is a cylindrical structure formed by a plurality of connecting plates in a surrounding way. Heat pipes which are arranged in parallel are arranged on one side of the connecting plates. A fluid pipeline is arranged on the heat pipes in the shape of a continuous square wave. One part of the fluid pipeline which is arranged at the rising edge or the falling edge of the square wave is fixedly connected with the heat pipes. The other part of the fluid pipeline is arranged among the heat pipes and is not in contact with the connecting plates. The heat pipes and the fluid pipelines are arranged on the inner wall of the cylindrical structure. Compared with the fluid pipeline of the existing fluid loop radiator, the fluid loop pipeline of the heat radiator provided by the invention is greatly reduced and the probability that the fluid pipeline is hit by space debris is greatly reduced. Even though the space debris hit the heat pipes and cause the heat pipes to fail because of leakage, only the radiating capacity of a small area where the heat pipes are hit is lost and almost the working of the entire radiator is not influenced. If the space debris hit the fluid pipeline and cause the fluid pipeline to fail because of leakage, an automatic valve can detect the pressure of a hit branch and can isolate the hit branch, and the situation that the entire radiator fails is avoided.

The invention discloses a powder-accumulation-prevention type hopper for a sensor molding extruding machine. The powder-accumulation-prevention type hopper comprises a cylindrical material storage barrel, a frustum body connected below the material storage barrel and a hopper body connected below the frustum body and composed of a material discharging barrel, wherein the integral hopper body is in a cavity structure; the frustum body is at least provided with two air nozzles; the air nozzles are connected with a high-pressure air source by pipelines. According to the powder-accumulation-prevention type hopper for the sensor molding extruding machine, the high-pressure air source blows blocked powder by the air nozzles and the blocked powder can be dispersed by a very great air-pressure impact force so as to fall into the material discharging barrel and guarantee normal production; an inclined angle is formed by the nozzles and the side face of the frustum body and the nozzles are aligned to the top face of the frustum body so that the impact force of high-pressure air can be utilized to the greatest extent and the aim of blowing away of the powder is realized; the powder-accumulation-prevention type hopper for the sensor molding extruding machine is simple in structure and is convenient and practical.

The invention relates to a disassembly prevention type safe fence which comprises two hollow supporting rods (1), the inner side of one supporting rod (1) is connected with at least two fence belts (2), and at least two buckling type locks (4) are correspondingly arranged on the inner side of the other supporting rod (1). A buckle (3) is connected to the other end of each fence belt (2), and each buckling type lock (4) comprises a lock body (4-1), a lock groove (4-2) is formed in each lock body (4-1), and a locking dog sliding rail (4-3) is arranged on each lock body (4-1). A locking dog (4-6) is arranged on each locking dog sliding rail (4-3), a lock hole (4-5) is formed in each locking dog (4-6), and the rear end of each locking dog (4-6) is connected with the corresponding lock body (4-1) through a spring (4-4). Each buckle comprises a buckle body (3-3), and a groove (3-1) and a clamping groove (3-2) are formed in each buckle body (3-3), wherein the grooves (3-1) are connected with the fence belts (2), and the clamping grooves (3-2) are matched with the locking dogs. The safe fence is simple in structure, practical, good in effect, safe and reliable and guarantees personal safety and healthy and stable operation of a power grid.

The invention discloses a blockage-prevention type feeding device of a sugarcane harvesting machine. The blockage-prevention type feeding device comprises a machine frame, an upper feeding roller, a lower feeding roller, an end cover, a gasket, a regulating screw bolt, a regulating spring, a slide block, a slide groove and the like, wherein the slide groove, a runway-shaped installing hole and a regulating screw bolt installing hole are processed in the lower end of the machine frame; the feeding roller mainly comprises a power input shaft, a roller frame, a clamping plate, a conveying element and the like; six rib plates are welded in the circumferential direction of the roller frame; the conveying element and the clamping plate are arranged on the rib plates through screw bolts; the slide block is put in the slide groove; the middle part of the slide block is the bearing seat; the lower end of the slide block is elastically connected with the machine frame through the regulating spring; upper and lower conveying rollers are independently driven by a hydraulic motor; the conveying passage can realize the floating change along with the diameter and quantity change of the fed sugarcane; the blockage and fracture in the sugarcane feeding process can be effectively reduced; the contact area with the sugarcane stems and stalks can be increased by the conveying element; the leaf feeling operation can be performed in the conveying process. The impurity content, the fracture rate and the peel damage rate of the sugarcane after the harvesting can be effectively reduced.

The invention relates to an explosion-protection electrical hot-water bag which comprises a bag body, a heater, a temperature controller, a plug, a water-storage device and an explosion-protection device. The explosion-protection device comprises a mount seat, a lock sleeve and a floating mark. By the arrangement of the explosion-protection device, the electrical hot-water bag thoroughly solves the problem that the conventional electrical hot-water bag can explode and hurt the user.

The invention relates to an explosion-proof lighter which comprises a shell, a piezoelectric device in the shell, a combustion chamber, a gas valve component and a windshield, wherein the upper end of the shell is provided with a press hand abutted against a piezoelectric cap in the piezoelectric device; the invention is characterized in that the shell is provided with a through hole on a dividing wall for dividing the combustion chamber and the space for holding the piezoelectric device, and the through hole is sealed by a sealing plug of elastic materials; compared with the prior art, when the explosion-proof lighter provided in the invention meets the sharply-increased pressure intensity in the high-temperature combustion chamber, the elastic sealing plug is propped open by the strong pressure, and the liquid gas partially flows into the space for holding the piezoelectric device in order to reduce the pressure intensity in the combustion chamber, which avoids the explosion of the lighter; as the space for holding the piezoelectric device is closed, the partial liquid gas flowing into the space for holding the piezoelectric device isn't sprayed outside the lighter body all at once, which avoids accidents and simultaneously effectively reduces the possibility of a fire; therefore, the explosion-proof structure is relatively safe and reliable.

In a nonflammable and disaster prevention type capacitor, the sealing property of the capacitor container is increased, a plurality of capacitor elements are collected, is accommodated in the container, and its inside is vacuum deaerated, the perfluorocarbon liquid deaerated by a deaeration apparatus is filled, and a capacitor which maintains an amount of residual air in the perfluorocarbon liquid to be not larger than 5%, is formed. A fluoride liquid to be filled in the container, consisting of a connection of carbon, fluorine and oxygen, and which includes per fluoropolyether by not smaller than 90% and whose boiling point is not lower than 120° C. and not higher than 270° C., and whose dynamic viscosity at 25° C. is from 0.9 mm2/s to not larger than 14 mm2/s, is impregnated into the capacitor element. An absolute pressure in the container is not smaller than 120 kPa and not larger than 300 kPa.

The invention discloses a heat preservation and freeze prevention type bathing device. The bathing device comprises a bathtub body; the bathtub body is connected to a circulating pump through a water pipe; the circulating pump is connected to an electric hot water tank, and the electric hot water tank is sequentially connected to a water purification device and a sterilization device through a water outlet pipe; the sterilization device is connected to a booster pump; a hollow main flow channel is arranged in a base plate of the bathtub body and is further connected with a plurality of flow diversion channels, and flow diversion channels are distributed at the bottom and the side wall of the bathtub body and communicate with a bathing space of the bathtub body; and the main flow channel is connected to the output end of the booster pump through a water guide pipe. According to the bathing device, the water temperature can be automatically adjusted so that the water temperature can be maintained at the temperature suitable for a human body.

The invention relates to an explosion prevention type dust collector, which comprises a box body, wherein the box body is provided with a dust gas inlet; the upper end and the lower end of the box body are respectively provided with a collector cover plate and a discharging hopper; the collector cover plate is provided with a dust gas outlet; a spray blowing pipe is arranged in the collector cover plate; the inlet end of the spray blowing pipe is provided with a pulse valve; a plurality of anti-static filter bags communicating with the spray blowing pipe are also arranged inside the box body; explosion prevention films are arranged on the outer side surface of the box body and the upper end surface of the collector cover plate; meanwhile, the invention also provides a control method of the explosion prevention type dust collector. The explosion prevention type dust collector has the advantages that the structure is simple; the explosion prevention effect is good; charges can be discharged out; the explosion rate can be reduced; the dust accumulation is reduced; the smooth discharging of the dust is ensured; the inside dust humidity can be well controlled; the spraying and blowing conditions are strictly controlled; the regular flowing of the inside dust is ensured; the generation of dust charges is reduced; the safety is higher.

The invention relates to a suspended movable vibration block prevention type material bin, which belongs to the field of material conveying machine manufacture. The material bin consists of a connecting bin and a material outlet bin, wherein the connecting bin and a fixed bin are suspended and elastically connected; the outer walls of the material outlet bin and the connecting bin are fixedly provided with symmetrical positioning and connecting shafts respectively; the positioning and connecting shafts are sheathed with shaft sleeves which are fixedly connected by a connecting plate respectively; an elastic rubber rod is arranged between the positioning and connecting shafts and the shaft sleeves, and a connecting sealing flexible component is arranged between the connecting bin and the material outlet bin; and the outer walls of the connecting bin and the material outlet bin are fixedly installed with a vibration motor respectively, and the installation position of the vibration motor is perpendicular to the axial line of the positioning and connecting shafts. The material bin changes the structural mode of the prior material bin from the whole structure, and the material bin is divided into the connecting bin and the material outlet bin from the structure, thereby achieving relative movement under the action of vibrating the motors under an effective sealing condition so as to ensure that materials are unobstructed in the bin body, and the phenomena of attachment, accumulation and blockage in the falling process of the materials are avoided.