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

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.

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 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 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 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 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 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.