111results about How to "Good for taking away" patented technology

The invention relates to a high-accuracy zinc base alloy electrode wire. Components in a shell layer comprise, by weight, 70.5%-95% of Zn, 2.5%-27% of Cu, 0.02%-4.0% of X, 0.002%-0.4% of Y and inevitable impurities brought in by raw materials. X is any two kinds of metal from Ni, Ag, Cr, Si and Zr, the content ranges of the two kinds of metal are both 0.01%-2.0%, Y is any two kinds of elements of Ti, Al, Co, B and P, and the content range of the two elements are both 0.001%-0.2%. The epsilon phase content in the shell layer structure is over 80% by weight, the balance is a gamma phase or an eta phase, and epsilon phases are evenly distributed on the surface of core materials. Meanwhile, the invention relates to a preparing method of the electrode wire. Compared with the prior art, a metal workpiece subjected to cutting processing by the electrode wire is high in surface smoothness and good in surface quality, accordingly, cutting accuracy is high, meanwhile, the electrode wire preparing technology is simple, operability is high, the number of manufacturing steps is small, and large-scale and automatic production can be achieved easily.

The present invention relates to a milling cutter provided with an equidistant arc head on an eccentric shape flank surface and a grinding method, the cutter can reduce the vibration during the process of processing of different hardness of hardened steels for splicing of a mould, the cutter life and workpiece surface quality can be improved, the flank surface shape can be changed, and the cutter tip strength can be improved. The milling cutter is an overall hard alloy end milling cutter. The milling cutter includes a cutter shank (1) and the arc head (2), the arc head includes a large curvature arc (2-1) and a small curvature arc (2-2). Tooth-spacing angles are 87 degrees, 93 degrees, 87 degrees, and 93 degrees, tooth-spacing vertical angles are equal, helix angle (r) is 38 degrees, helix angle (v) is 40 degrees, and cutter end cutting edge flank surface (10) and circumferential cutting edge (6) are in eccentric shape. Front angle is in the range of 0-3 degrees, first clearance angle is in the range of 8-10 degrees, and second clearance angle is in the range of 15-22 degrees. The center position of the cutter is provided with cooling channels (3), the number of the cooling channels is four, and the four cooling channels respectively are located four cutting edge end tooth chip pockets. The present invention also provides a reference for the grinding of the cutter of the type.

The invention discloses a concentration detection device of invariable nitrogen oxides in an explosive, which comprises a gas acquisition and transmission device, a nitrogen oxide gas detector, and a data acquisition and processing system. A reaction test tube which is filled with explosive test samples or test paper is heated by a heating furnace of constant temperature for a period of time, and then extracted from the furnace; under the control of a solenoid valve and a flowmeter, the driving function of carrier gas is used for transmitting the nitrogen oxide gas decomposed in the reaction test tube completely to the nitrogen oxide gas detector at a certain velocity of flow; the data acquisition and processing system is used for collecting and analyzing the detection data acquired by the nitrogen oxide gas detector to ultimately determine whether the invariability of the explosive test sample is qualified. The detection device can not only be used in the detection of the invariability of the explosive test sample, but also can be used in the approval test of the special test paper. At the same time, the detection device can be singly used for collecting the decomposed gas of the explosive. The detection device has the outstanding advantages of low labor intensity, and objective and accurate measurement results.

The invention discloses a vibrating drying device for plate production and processing. The vibrating drying device for plate production and processing comprises a box body, a conveying belt, a transmission wheel and a motor, wherein a plurality of bulges are uniformly distributed on the outer surface of the conveying belt; and a water scraping mechanism is arranged above the conveying belt, a camis installed at the inner side of the conveying belt, horizontal brush rolls are installed above the conveying belt, a hollow shaft is fixed to the other end of the brush roll, a hot-air box is communicated to the tail end of the hollow shaft, a cavity is formed in the brush roll, and bristles are uniformly distributed on the outer wall of the brush roll. According to the vibrating drying device for plate production and processing, hot air is also capable of flowing through the lower surface of a plate through projections arranged on the conveying belt to dry the lower surface of the plate, and the drying dead angles of the lower surface are avoided in combination with the vibration of the cam; and the brush roll absorbs water on the upper surface of the plate into the bristles, and contacts with the hot air during rotation to rapidly evaporate water, and meanwhile, the entering hot air is uniform, and high in flowability.

A comprehensive improvement method for salinized soil includes S1, applying fertilizer; S2, performing soil preparation, namely building an arc-shaped gentle slope every 5-10 meters and digging an open trench between bottoms of every two arc-shaped gentle slopes; S3, laying pipes and irrigating, namely laying rotating micro sprinklers at the tops of the arc-shaped gentle slopes; S4, sowing suaeda salsa; S5, irrigating; S6, picking vegetables; S7, transplanting plants from late October to early November after seeds of the plants are mature and part of the seeds fall off. The comprehensive improvement method has the advantages that the salinized soil of coastal saline and alkaline land can be restored pointedly, improvement time can be shortened, and economic benefit can be achieved.

A hot air circulating system for sufficiently evaporating solvent and recovering it in dry spinning procedure is composed of a channel, a solvent recovering unit, a heat exchanger between the exit of solvent recovering unit and gas inlet of channel, and a lateral hot air blower between channel and spinneret plate for increasing the solvent evaporating and recovering efficiency.

The invention belongs to the technical field of machining, and particularly discloses drilling equipment used for machine parts. The drilling equipment comprises a rack, a drilling unit and a clampingunit, the clamping unit is fixed to the rack and is located above the drilling unit, the drilling unit comprises a rigid corrugated pipe with the closed lower end, a threaded rod and a motor drivingthe threaded rod to rotate, the rigid corrugated pipe is rotationally connected to the rack, a spiral bit is fixed into the rigid corrugated pipe, and the axis of the spiral bit is coincident with theaxis of the rigid corrugated pipe in position; a strip-shaped groove is formed in the side wall of the threaded rod, the upper side of the threaded rod is connected into the spiral bit in a sliding manner, the axis of the threaded rod is coincident with the axis of the spiral bit, and a protrusion connected into the strip-shaped groove in a sliding manner is arranged in the spiral bit; and a pushing sleeve is in threaded connection to the threaded rod, a sliding groove is formed in the pushing sleeve, and a limiting rod with one end clamped into the sliding groove is fixed to the rack. By means of the drilling equipment, the problem that when placed on a working table, the machine parts are prone to being scrapped to be damaged by metal chippings is solved.

The invention provides an engine used for a generator, which has the advantages of simple air flue structure and component saving, can reasonably utilize cooling air, effectively improves the cooling effect of the engine, and can be simply installed in an easy control mode. The engine used for the generator comprises a generator, an engine used for driving the generator, a first cooling structure, a second cooling structure and a silencer cover, wherein the first cooling structure is used for forming a first cooling air flue for cooling the cylinder blocks of the generator and the engine; the second cooling structure is used for forming a second cooling air flue for cooling the crankcase of the engine; the silencer cover consists of an inner cover and an outer cover; a gap is formed between the silencer cover and a silencer; a third cooling air flue for cooling the silencer is formed; and the third cooling air flue is respectively communicated with the first cooling air flue and the second cooling air flue.

The invention discloses a high-difficulty steel core wire electrode and a manufacturing method thereof. The high-difficulty steel core wire electrode comprises a core material, a middle clad layer and an outer clad layer. The core material is prepared from raw materials including, by weight, 30-54 parts of iron, 30-55 parts of carbon, 1.5-2.4 parts of tin, 4-9 parts of chromium, 1-3 parts of manganese, 2-5 parts of molybdenum, 1.3-5.1 parts of nickel, 2.3-5.4 parts of silicon, 3-6 parts of tungsten, 3-4 parts of vanadium, 2-6 parts of phosphorus, 5-10 parts of sulphur and 12-15 parts of heat conducting filler. The steel core wire electrode is a composite wire and is composed of the steel core, the middle red copper clad layer and the outer brass clad layer. At the normal temperature, the steel core and a brass wire almost have the same tensile strength, but with the increase of temperature, the tensile strength of the brass wire is rapidly reduced, and the tensile strength of the steel is higher than that of the brass wire. The red copper layer is wrapped outside the steel core to improve the electric conductivity, and the outer brass layer plays a role in improving the washing performance.

The invention relates to a screw oil press, in particular to a twin-screw oil press with a cooling device. The twin-screw oil press comprises a rack, wherein a hollow pressing shaft is arranged above the rack; the pressing shaft is fixedly provided with a plurality of spiral blades; a pressing row is sleeved out of the blades; the pressing row consists of two half-cylinders; one end of the pressing shaft is provided with a transmission mechanism; a pressing row cavity is formed between the pressing row and the blades; one end of the pressing row cavity is communicated with a material inlet arranged above the upper side; the other end of the pressing row cavity is provided with a cake outlet adjusting mechanism; the material inlet is provided with a spiral feeding mechanism; an oil collection tank is arranged on the middle part of the rack and below the pressing row; the side of the rack corresponding to the cake outlet adjusting mechanism is provided with a cake collection tank; and the oil press further comprises a pressing shaft cooling device and a pressing row cooling device. With the adoption of the oil press, the temperature in a peanut oil pressing process is controlled effectively, and the condition that the cake temperature in the peanut oil pressing process is not higher than 60 DEG C is ensured, so that the condition that the modification of peanut protein and the loss of micro beneficial components is avoided, the quality of cold-press peanut oil is guaranteed; besides, the oil yield is high and the power consumption is low, thereby the twin-screw oil press is beneficial to development and promotion.

The invention relates to a cleaning solution for optical materials, and belongs to the technical field of optical material cleaning. The cleaning solution comprises an anionic surfactant, a hydrogen bond breaker, a complexing agent, alcohol, a PH adjuster, salt and water and is suitable for cleaning away surface particles of fused quartz, K9 glass, glass ceramic and other polished optical materials. After the cleaning solution is diluted by 1-10 times, the polished optical materials are subjected to ultrasonic cleaning in the cleaning solution for 5-10 minutes and then subjected to ultrasoniccleaning in deionized water for 1-10 minutes to remove the cleaning solution on the surfaces of the optical materials. By using the cleaning solution, contaminants, such as organic contaminants, particles and ion residues, on the surfaces of the polished optical materials can be removed. A hydrogen bond inhibitor contained in the cleaning solution can overcome the defect that the surfaces of the polished optical materials easily adsorb the particles, and the surface particles of the optical materials are effectively removed.

The invention provides a luminescence diode lamp, which comprises a head cover, a radiator connected with the lower part of the head cover, a heat conductor and a couple of luminescence diode module groups adhibited at the lower end surface of the heat conductor; the radiator comprises a heat conducting cylinder wall and a couple of radiating rectangular fins extending outwards from the heat conducting cylinder wall; the heat radiator is contained inside the heat conducting cylinder wall and is connected with the heat conducting cylinder wall for heat conducting; the lower end surface of the heat conductor forms an inner concave used for being adhibited by the luminescence diode module groups. The air current channels between the radiating rectangular fins are arranged at the peripheral area of the heat conductor, which facilitates air taking away the heat of the radiating rectangular fins by convection from the bottom to top, thus realizing radiating effect. Meanwhile, since the luminescence diode is adhibited on the inner concave of the heat conductor, the emission angle of light is increased.

The invention relates to a winnowing pan type grain throwing machine. The winnowing pan type grain throwing machine comprises a frame, a grain throwing hood, a throwing motor and an impeller. The impeller is arranged in the grain throwing hood which is arranged on the upper portion of the frame, bearing seats at two ends of the impeller are arranged on the frame respectively, a center shaft of the impeller is connected with an output shaft of the throwing motor through a coupler, and the center shaft, the coupler and the output shaft are coaxial. The grain throwing hood is provided with a feeding port and a discharging port, and blades of the impeller are bent plates. The winnowing pan type grain throwing machine has the advantages of small size, stability of grain throwing paths, low noise, detachability of parts, convenience in installation and maintenance, low cost and flexibility in use.

The invention discloses a surface-emitting semiconductor laser chip and a preparation method thereof. The semiconductor laser chip is a surface-emitting two-dimensional array light source chip emitting laser from a substrate layer; and the distance between the centers of two adjacent light sources is equal. The chip is sequentially provided with a substrate layer, a front mirror, an active layer,an oxidation optical limiting layer, a rear mirror and an ohmic contact layer from bottom to top; the thickness of the substrate layer, the distance between the surface emitting array light sources and laser wavelength meet a Talpot relational expression; a first electrode is manufactured at the top of the ohmic contact layer; a passivation layer is manufactured at a certain position of the firstelectrode, wherein the position of the first electrode does not contact with the ohmic contact layer; a groove structure is manufactured at the position, corresponding to the oxidation aperture of theoxidation optical limiting layer, of the light-emitting side of the substrate layer, a second electrode is manufactured at the groove position of the substrate layer, and the second electrode and thefirst electrode at the top of the ohmic contact layer are opposite in electrical property; and the non-electrode position of the light-emitting surface of the substrate layer is plated with a semi-reflecting and semi-transmitting film, and laser is emitted at the position.

The invention discloses a test paper score recording and storage system and method, and belongs to the field of aided teaching equipment. The system comprises a test paper conveying unit, a test paperstorage unit and a scanning and score recording unit, wherein the test paper conveying unit is used for conveying test paper; the scanning and score recording unit is used for scanning the test paperand recording scores of the test paper; the test paper storage unit is used for classifying and storing the test paper after the scanning and score recording; the test paper storage unit comprises apaper storage cabin body, a switch mechanism, paper pushing mechanisms and a guiding mechanism; the paper storage cabin body comprises more than two paper storage grids in parallel; the switch mechanism is used for controlling the opening and closing of the inlet of each paper storage grid; the paper pushing mechanism are correspondingly arranged above the inlets of the paper storage grids; through the paper pushing mechanisms, the test paper is pushed to enter corresponding paper storage grids along the inlets; and through the guiding mechanism, the test paper is guided. By adoption of the test paper score recording and storage system, automatic score recording, conveying and classification can be carried out on the test paper, so that the workload of teachers can be decreased and the processing efficiency is improved.

The invention discloses a system and a method for cooling motor with liquid, relates to the field of motor cooling and aims to realize the liquid-cooling heat dissipation of all parts in the motor. The system comprise a casing (1), a stator (2), a rotor (3), an end cover (4), a shaft (5), a bearing (6), a bearing chamber (7), a liquid storage groove (8), a liquid outlet (9), a liquid pipeline (10), a liquid external circulation device (11) and a liquid inlet (12), and further comprises a liquid distribution box (13), a jet pipeline (14), a projection (15) and a jet orifice (16). Liquid jets out from the periphery of the bearing (6) through the jet orifice (16) and cools the bearing (6), and then jets to the rotor (3) and forms a vortex under the combined rotation action of the rotor (3), the shaft (5) and the bearing (6), thereby adequately achieving a cooling function. Therefore, the liquid can be sprayed onto other parts in an internal cavity of the motor. The system and the method, provided by the invention, are mainly applied to rotary structures such as the motor comprising the bearing, the shaft and the like.

The invention discloses a bus motor assembly, belonging to the technical field of motors. The bus motor assembly includes a casing, wherein a rotating shaft, a rotor that fixedly sleeves on the rotating shaft, and a stator that rotates with the rotor are arranged in the casing; one end of the rotating shaft penetrates out of the casing, and the other end of the rotating shaft is provided with a fan; a plurality of cooling channels are arranged in the rotor, a plurality of mounting grooves are evenly distributed on the surface of the rotor with intervals, cooling holes are formed in a part of the rotor located between two adjacent mounting grooves, a plurality of second cooling fins are arranged at one end of the rotor close to the fan, each second cooling fin is arranged around the periphery of the end surface of the rotor, and the end part of each second cooling fin is bent towards the direction far away from the central axis of the rotor; an annular partition plate is fixed on the inner wall of the casing, a plurality of third cooling fins are arranged on the inner side of the annular partition plate, and the end parts of the third cooling fins are bent towards the direction faraway from the fan. According to the bus motor assembly disclosed by the invention, the heat dissipation performance of the motor can be improved, and the motor can be used in a high temperature environment.

The invention discloses an open and close door of an electric oven. The open and close door features good heat insulation effect and low temperature on the cold surface, and is convenient and safe for opening. The open and close door comprises a first clamping piece (1), a second clamping piece (2), a handle (3), door panels (4) and a rotating shaft (5); wherein, the first clamping piece (1) and the second clamping piece (2) are respectively and fixedly connected with two opposite sides of the door panels (4), the first clamping piece (1) is rotatablely connected with an oven body (100) of the electric oven by the rotating shaft (5), both the first clamping piece (1) and the second clamping piece (2) are sectional materials with the same shape of cross section, the first clamping piece (1) is provided with an axle hole (10) and at least two first clamping parts (11, 12, 13), the second clamping piece (2) is provided with at least two second clamping parts (21, 22, 23), the axle hole (10) is matched with the rotating shaft (5), the first clamping parts (11, 12, 13) and the second clamping parts (21, 22, 23) are correspondingly arranged and clamped and fixed with the door panels (4) with the number being equal to the number of the clamping parts, and gasps are arranged between the adjacent door panels (4).

The invention provides a chloroacetic acid production method and a chlorination reactor. The chloroacetic acid production method comprises the following steps: primarily mixing acetic acid, liquid chlorine and acetic anhydride according to a ratio, feeding a mixture obtained from the former step into the chlorination reactor, keeping a certain reaction temperature and a certain reaction pressure, completing chlorination reaction in a gravity field of 100-1000g, and performing separation purification on the product by using a continuous method production process after the reaction is completed, thereby obtaining a product finally. The chlorination reactor mainly comprises a reaction kettle, a cooling half-tube, a supergravity bucket, a driving motor and a mixer. By adopting the chloroacetic acid production method and the chlorination reactor provided by the invention, the macroscopic and microcosmic distribution of components in a reaction system can be improved, the side effect is reduced, the internal mass transfer velocity of the liquid phase is reduced, the separation of the gas phase and the liquid phase is improved, the chlorination reaction velocity is increased, the reaction retention time is shortened, the heat radiation effect is improved, and the treatment capacity is much higher than that of a conventional method, and the chloroacetic acid production method is particularly applicable to a large-size chloroacetic acid device.

The invention provides a self-ventilation motor fan housing capable of enhancing the capacities of heat dissipation and protection and resolves the problems that an existing self-ventilation motor is poor in protective capability of an air inlet-outlet and low in reliability when temperature rise of the motor is overhigh. The self-ventilation motor fan housing capable of enhancing the capacities of the heat dissipation and the protection comprises a fan housing body which is arranged on the air inlet-outlet of the motor, the fan housing body comprises a shell body, an arch-shaped plate is arranged at the upper end of the shell body, wherein a hole is formed in the middle of the arch-shaped plate, the arch-shaped plate is connected with an outer shell of the motor in a matched mode, a plurality of louver-type wind plates are arranged on the front side and the back side of the shell body, air ports are formed in the lower portions of the plurality of louver-type wind plates, and a water leakage hole is formed in the bottom of the shell body. The self-ventilation motor fan housing capable of enhancing the capacities of the heat dissipation and the protection is reasonable and reliable in structural design and capable of improving cooling effect, meanwhile, the motor is good in the protective capacity, high in reliability and low in a failure rate. Due to the fact that the temperature rise of the motor is lowered, the core length of an effective part of the motor can be reduced, the size is reduced, the weight is reduced, cost is lowered, the demands for low-floor and light weight of the motor of users can be satisfied.

The invention provides a vertical backwashing filter device. The vertical backwashing filter device comprises a filter screen cylinder, and a water inlet pipeline and a water outlet pipeline which arearranged on the filter screen cylinder, a vertical middle separator plate divides the internal of the filter screen cylinder into a left chamber and a right chamber, each of the left chamber and theright chamber is filled with a filter material, the water inlet pipeline is arranged at the bottom of the filter screen cylinder, the water outlet pipeline is arranged on the top surface of the filterscreen cylinder, and the water inlet pipeline is provided with a water pump; and the filter screen cylinder is supported by a support. The backwashing device designed in the invention has a simple and reasonable structure, and integrates filtering and backwashing, adopts a bottom-to-top filtering mode and a top-to-bottom backwashing mode adopted in the invention ensure that a filtering element isnot obstructed by impurities, precipitating downwards under the action of gravity and accumulating, in water to be filtered, and facilitate the backwashing operation.

The invention provides a multifunctional crab breeding device, and belongs to the field of aquaculture devices. The multifunctional crab breeding device comprises a plurality of breeding boxes, wherein the breeding boxes are box-shaped with openings on the upper sides; each breeding box is respectively arranged in rows and columns along the horizontal direction and the vertical direction to form amatrix breeding structure; a water inlet pipe is arranged above the breeding boxes at the top; water inlets corresponding to the breeding boxes at the top are formed in the water inlet pipe; a waterdrain pipe is arranged below the breeding boxes at the bottom; vertical overflow pipes are arranged in the culture boxes; the upper ends of the overflow pipes are higher than the bottom surfaces of the culture boxes; the lower ends of the overflow pipes extend downwards from the bottom surfaces of water outlet cavities; and the overflow pipes of upper and lower adjacent culture boxes are respectively arranged at the left half part and the right half part of the bottom surfaces of the respective culture boxes. The multifunctional crab breeding device has the advantages that the device not onlycan provide enough moving space for crabs, but also can efficiently and rapidly complete washing of the breeding boxes, has a mute effect, can isolate floating dirt generated by crabs from the livingspace in the breeding process, and is an efficient multifunctional crab breeding device.

The invention discloses a low pressure drop holding grid which comprises a plurality of inner strips and outer strips, wherein the plurality of inner strips are intersected with one another to form a net-shaped grid structure and are formed into a plurality of hollow grid units; the outer strips are arranged at the periphery of the grid structure in an enclosure manner and are fixed with the inner strips; a plurality of first guide wings which are arranged at intervals are formed on the upper edges of the outer strips; a plurality of second guide wings and third guide wings which are arranged alternatively are formed on the lower edges of the outer strips; each third guide wing is positioned between two adjacent second guide wings; the interval between each second guide wing and each third guide wing is smaller than the width of each first guide wing; the first guide wings, the second guide wings and the third guide wings all extend into the grid structure in an inclined and convex manner. By adopting the low pressure drop holding grid disclosed by the invention, hooking in hoisting is effectively prevented, and moreover through cooperation of three guide wings, the amplitude that the guide wings extend into the grid structure in the inclined and convex manner can be very small, so that the incident flow area is small, and the pressure loss of a coolant is small.

The invention belongs to shade devices, and discloses an evaporation type shade device which comprises a stand column provided with a mercerization cotton yarn cloth net. The top of the stand column is provided with a water pipe above the mercerization cotton yarn cloth net, a water pump supplies water to the water pipe, the water pipe is provided with multiple nozzles, and the nozzles spray waterto the mercerization cotton yarn cloth net when the water pump is started. A water accumulation container is arranged between the water pipe and the mercerization cotton yarn cloth net. A liquid level switch is arranged in the water accumulation container and sets the critical value according to the water volume in the water accumulation container obtained when the mercerization cotton yarn clothnet absorbs water to reach saturation, and the water pump is controlled to be stopped when the water level in the water accumulation container reaches the critical value of the liquid level switch. By means of the characteristic that the mercerization cotton yarn cloth net is good in hydroscopicity, solar radiation energy is absorbed, the good shade effect can be achieved, when water absorption reaches saturation, the liquid level switch controls the water pump to be stopped, the mercerization cotton yarn cloth net is prevented from dropping water, and meanwhile the device is easy to assembleand disassemble, portable, convenient to carry and quite high in applicability.

The invention discloses a washing and drying integrated machine and a method for automatically cleaning thread scraps. The washing and drying integrated machine comprises an outer cylinder and a drying assembly, wherein an air outlet communicated with a drying air duct is formed in the outer cylinder, and a filter screen for filtering air flowing through the air outlet is arranged at the air outlet; the distance between the lowest position of the air outlet and the lowest position of the inner wall of the outer cylinder in the vertical direction is L, the diameter of the outer cylinder is D, and L: D is 0-0.15. The position of the air outlet is lower, the filter screen is arranged at the air outlet and soaked in washing water in a clothes washing state, or the liquid level of the washing water is close to the filter screen, so that water flow can reach the filter screen in the washing process to flush the thread scraps on the filter screen, long-time soaking or water flow impact of thefilter screen is realized in the washing process, automatic cleaning is realized, the workload of a user is reduced, and the thread scraps on the filter screen are cleaned up.

The invention relates to a self-circulating lubricating and cooling submerged electric pump. The self-circulating lubricating and cooling submerged electric pump comprises an impeller, a guide vane body and a motor arranged in a motor shell, wherein the motor shell is connected with the guide vane body through a motor end cover of the motor by means of locking screws, the lower end of a main shaft of the motor sequentially penetrates through the motor end cover and the guide vane body to be connected with the external impeller, and the main shaft is supported by the motor end cover and the guide vane body through a radial bearing and a thrust bearing. The self-circulating lubricating and cooling submerged electric pump is characterized in that a bearing chamber is formed by the thrust bearing, the main shaft and the guide vane body in a surrounding mode, an oil pool is packaged through the motor end cover and the guide vane body, a lubricating hole is formed in the guide vane body or the thrust bearing or the main shaft, and the bearing chamber and the oil pool are communicated through the lubricating hole.

The invention relates to a MRI body coil structural assembly. The MRI body coil structural assembly comprises a body coil and an outer cylinder, the body coil comprises an inner cylinder and electronic components, the electronic components are arranged on an outer sidewall of the inner cylinder, the outer cylinder is arranged outside the inner cylinder in a sleeved manner, a heat radiation channelis formed between an inner wall of the outer cylinder and an outer wall of the inner cylinder, an air inlet of the heat radiation channel is located at one end of the body coil, an air outlet of theheat radiation channel is located at the other end of the body coil, and the outer cylinder is a sound insulation cylinder. The MRI body coil structural assembly is provided with a ventilation heat radiation structure and an air diverting structure so that the heat generated by the electronic components can be uniformly taken away with high efficiency, the lifetime of the components is prolonged,and the discomfort of patients is reduced; the sound insulation cylinder is additionally provided so that the noise generated by a gradient coil can be effectively reduced, and a more comfortable environment is provided for staff and tested patients; the body coil is arranged on a magnet so that the vibration of the body coil can be reduced, and the imaging quality is improved; and a sickbed guiderail is integrated on the body coil so that the cost is reduced, the installation is convenient, and the problem of difficult removal of small sucked metal materials is solved.

A novel negative electrode runner suitably used for aerospace static water discharge comprises a negative electrode pole plate (1), static water discharge valves (2) and a negative electrode runner (3), wherein the negative electrode runner (3) is a groove-shaped passage on a plane of the negative electrode pole plate (1), an airflow inlet and an airflow outlet are respectively formed in two sides, parallel to each other, of the negative electrode pole plate (1), an air inlet and an air outlet communicate with each other by the negative electrode runner (3), the static water discharge valves (2) are arranged on a side wall of the negative electrode runner (3) and swing under circuit control, the materials of the static water discharge valves (2) are hydrophilic materials, and a proton exchange membrane of a proton exchange membrane fuel cell covers one side, where the negative electrode runner (3) is formed, of the negative electrode pole plate (1). The novel negative electrode runner is favorable for static water discharge, a membrane water logging phenomenon caused by long-term working of the fuel cell is improved, and the performance of the fuel cell is improved.

The invention discloses an electroplating tank, which comprises a tank body and an anode plate arranged at the bottom portion of the tank body, wherein an inner sealing ring is arranged between the tank body and the anode plate, a ring-shaped deionized water tank is arranged on the tank body, and is positioned on the outer side of the inner sealing ring, and the anode plate covers and presses thedeionized water tank. According to the present invention, the deionized water tank is additionally arranged on the outer side of the inner sealing ring so as to effectively dilute the infiltrated plating solution, such that the damage of the plating solution crystallization on the sealing effect due to the infiltrating of the plating solution around the inner sealing ring can be prevented.

The application relates to the field of plate stamping, and particularly discloses a stamping device for shells of mini-tillers, which comprises a base, a female die, a male die, and a stamping machine, the female die is fixed to the base, the interior of the base is provided with a liquid cavity and diversion passages, a first piston plate is arranged in the liquid cavity, the first piston platedivides the liquid cavity into a first cavity and a second cavity, the interior of the female die is provided with a liquid inlet passage which is communicated with the die cavity, the liquid inlet passage is communicated with the first cavity, and the sidewall of the first cavity is provided with limit ribs; each limit rib is provided with a first quick connector which is connected to one end ofthe diversion passage, the other ends of the diversion passages are communicated with the second cavity, the first piston plate is provided with check valves and second quick connectors connected to the first quick connectors; the base is provided with a first oil cavity and a second oil cavity, a piston is arranged in the first oil cavity, a second piston plate is arranged in the second oil cavity, the upper end of the first oil cavity is communicated with the second oil cavity, and when moving upward, the male die can drive the second piston plate and the first piston plate to simultaneouslymove upwards; and water in the liquid cavity can get into the die cavity to flush the die cavity.