124results about How to "Improve the detachment effect" patented technology

A throwaway insert and a cutting tool enable a high speed cutting operation for a metallic material having great ductility such as aluminum and obtaining a vertical wall with a high quality machined surface while improving chip control. The throwaway insert (1) comprises a major cutting edge (60) including a tapered cutting edge (61) connected to a cutting edge (41) of a nose portion (40), and a curved cutting edge (62) connected to an end of the tapered cutting edge (61) at a connection point (P). The curved cutting edge (62) is formed so as to extend along an imaginary cylindrical surface (S) whose center axis coincides with the axis of rotation of a tool main body (200), and tapered cutting edge (61) is formed so as to gradually curve from the imaginary cylindrical surface (S) toward the inside of the imaginary cylindrical surface (S) as the distance from the curved cutting edge (62) increases, and the distance from the nose portion (40) decreases. The throwaway insert (1) is attached to the tool main body (200) in which the surface of the distal end thereof is machined so that surface roughness thereof is less than 3.2 mu m when indicated by the Ry roughness. <IMAGE>A throwaway insert and a cutting tool enable a high speed cutting operation for a metallic material having great ductility such as aluminum and obtaining a vertical wall with a high quality machined surface while improving chip control. The throwaway insert (1) comprises a major cutting edge (60) including a tapered cutting edge (61) connected to a cutting edge (41) of a nose portion (40), and a curved cutting edge (62) connected to an end of the tapered cutting edge (61) at a connection point (P). The curved cutting edge (62) is formed so as to extend along an imaginary cylindrical surface (S) whose center axis coincides with the axis of rotation of a tool main body (200), and tapered cutting edge (61) is formed so as to gradually curve from the imaginary cylindrical surface (S) toward the inside of the imaginary cylindrical surface (S) as the distance from the curved cutting edge (62) increases, and the distance from the nose portion (40) decreases. The throwaway insert (1) is attached to the tool main body (200) in which the surface of the distal end thereof is machined so that surface roughness thereof is less than 3.2 mu m when indicated by the Ry roughness. <IMAGE>

In a hybrid car, or an electric motor-driven four-wheel-drive vehicle, in which an electric motor is driven directly by an output from a generator, vehicle running performance is enhanced. The output from the generator is controlled so as to maintain a generator torque in a range, in which the vehicle does not stall. Specifically, a driving apparatus for the hybrid car includes a second generator 2 driven by an engine 1 for driving one pair of either front or rear wheels 14, 15 , an electric motor 5 driven through directly receiving the output from the second generator 2 and driving the other pair of either the front or rear wheels 14, 15 , and a four-wheel-drive control unit 6 controlling driving of the second generator 2 and the electric motor 5 . When the engine 1 is in an overloaded condition, the four-wheel-drive control unit 6 limits the output of the second generator 2.

The invention relates to a thermal printing ribbon, in particular to a waterborne thermal printing ribbon for date printing and a preparation method thereof. The ribbon comprises a ribbon base and a thermal transfer ink layer coated on the ribbon base, wherein the thermal transfer ink layer comprises the following raw materials by weight percent: 10-35% of binder, 55-80% of pigment and filler and4-15% of auxiliaries. The preparation method is characterized by using water, ethanol and an alkali to dilute and mix the proportionally weighed binder, pigment, filler and auxiliaries of the ink layer uniformly, grinding, coating the powder on the surface of one side of the ribbon base and then drying the surface. The ribbon and the preparation method have the following beneficial effects: the ribbon has good detachment property and strong adaptability; the printed patterns are resistant to scrape, can resist water, steam and hydrogen peroxide and has good weather resistance; and the preparation method has no pollution and toxicity, thus being more environment-friendly.

The invention discloses a lithium ion secondary battery composite positive material and a preparation method thereof. The lithium ion secondary battery composite positive material is a high-performance composite material which is formed by coating the lithium ion secondary battery composite positive material with cross-linkable polymer under a non-inert atmosphere. The cross-linkable polymer and the positive material liquid phase are uniformly mixed, dried and processed at a high temperature under the non-inert atmosphere, so that the polymer is cross-linked and cyclized, and the coating of the positive material is completed, damages of organic substances to carbon thermal reduction of the positive material under a high-temperature inert atmosphere are avoided; the cross-linked and cyclized coating layer has electronic conductivity and mechanical strength, is uniformly coated, effectively prevents direct contact of active particles and the electrolyte, so that the problems of low side reaction and circulating efficiency of electrolyte and the active material particles, quick capacity attenuation, and the like are solved. Moreover, according to the preparation method, the preparation process is simple, the cost is low and the preparation method is suitable for large-scale production.

The invention relates to a funnel-shaped valve piezoelectric pump and a working method thereof, and belongs to the field of fluid machinery. A pump body (1) is provided with an inverted conical or round table-shaped pump cavity, a central passage and a lateral passage; a valve body consists of a valve core and a central conduit connected with the valve core; the valve core is also provided with anopen valve core inner cavity, and the valve core and the central conduit are combined to integrally form into a funnel shape; the edge of the valve core and the inner wall of the pump cavity form anedge valve port; and the pump cavity is divided into a cavity A and a cavity B by the valve core, wherein the inner wall of the pump cavity and the side wall of the valve core form the cavity A, and the inner wall of the valve core, the inner wall of the pump cavity, a pump cover and a piezoelectric vibrator surround into the cavity B. The edge of a funnel-shaped valve contacts the approximate points on the conical surface of a funnel-shaped cavity, the piezoelectric vibrator vibrates to lead the volume of the pump cavity B to periodically change, and a fluid only can flow into the pump cavityB from the pump cavity A through the boundary of the funnel-shaped valve and can not reversely flow, thereby performing the function of the valve, and achieving the purpose of miniaturization, simplification and convenient installation of the piezoelectric pump.

A fuel injector has an orifice plate including a plurality of spray-discharge orifices, which orifice plate is situated downstream from a valve seat member having a fixed valve seat. An inflow opening, which is provided directly upstream from the spray-discharge orifices as incident-flow cavity, is designed in such a way that an incident flow to the spray-discharge orifices takes place largely at a right angle to the longitudinal extension of the spray-discharge orifices. The spray-discharge orifices are placed and oriented in such a way that at least one fuel spray in the form of a hollow cone lamella or full cone lamella is able to be spray-discharged, in which a radially outer region is made up of larger droplets than a radially inner region of the spray.

The invention provides a supported hydroxide high-selectivity gasoline adsorption deep desulfurizing agent and a preparation method thereof. The supported hydroxide high-selectivity gasoline adsorption deep desulfurizing agent is prepared from a carrier and metal hydroxide supported on the carrier; the mass ratio of the metal hydroxide to the carrier is (5 to 30) to 100. The invention further provides the preparation method of the supported hydroxide high-selectivity gasoline adsorption deep desulfurizing agent. The supported hydroxide high-selectivity gasoline adsorption deep desulfurizing agent provided by the invention has the advantages of relatively high desulfurizing depth, high selectivity, no octane value loss and flexibility, simplicity and convenience for operation.

The invention belongs to the technical field of high-polymer materials and particularly relates to a release film free of silicon coating and a preparation method of the release film free of silicon coating. The release film is in a three-layer structure comprising a first functional layer, a middle layer and a bottom layer or the first functional layer, the middle layer and a second functional layer. By adoption of homo-polypropylene and calcium carbonate master batch as main raw materials, the three-layer release film is structurally compact and easy to strip and is small in release force and more effective on the basis that adhesive surface characteristics are guaranteed against influences, and the problem of generally high release transferring of conventional light release films is solved; in addition, a silicon coating procedure is avoided, so that cost is saved; due to avoiding of toxic and volatile solvents and the like in a processing process, environment pollution is prevented, and harms to operators are reduced.

The invention provides a non-aqueous electrolyte and a lithium ion battery. The non-aqueous electrolyte comprises a solvent, an electrolyte lithium salt and a functional additive, wherein the functional additive comprises 4,4'-dipinacol borate diphenyl sulfone, dipyridyl carbonate and lithium difluorophosphate. When the electrolyte provided by the invention is applied to a lithium ion battery of ahigh-nickel ternary material / graphite system, the impedance of the lithium ion battery can be remarkably reduced, the power performance of the lithium ion battery can be improved, gas production of the lithium ion battery in circulation and storage processes can be remarkably inhibited, and the rate capability, the normal-temperature cycle performance, the high-temperature cycle performance, thehigh-temperature storage performance and the safety performance of the lithium ion battery are remarkably improved.

The invention discloses a coating agent, a coated modified graphite negative electrode material and a preparation method and application thereof, and a lithium ion battery. The coating agent comprises a solute, a solvent and an auxiliary agent, wherein the solute is one or more of coal pitch, petroleum pitch and petroleum resin; the auxiliary agent comprises a cross-linking agent. The preparation method of the coated modified graphite negative electrode material comprises the steps of S1, mixing graphite aggregate with the coating agent to obtain a mixture A; S2, performing heat treatment on the mixture A to obtain a mixture B; and S3, carrying out carbonization treatment on the mixed material B, thereby obtaining the product. The graphite aggregate structure of the graphite negative electrode material prepared by the invention is well kept; and the graphite negative electrode material has excellent lithium ion rapid intercalation and deintercalation capability and excellent circulation capability. The preparation method is simple and feasible, and has the advantages of large-scale production, low cost, environment friendliness, convenience in use and the like.

The invention discloses a preparation method of a deinking agent, and belongs to the technical field of paper making. According to the method, 60 to 80 parts of water, 20 to 30 parts of processing agents, 5 to 8 parts of emulsifying agents, 15 to 25 parts of modified zeolite and 8 to 12 parts of sodium bicarbonate are sequentially weighed through being metered in parts by weight; the water and theprocessing agents are mixed into a stirring device; the emulsifying agents are added into the stirring device; stirring and mixing are performed for 35 to 55 min under the conditions of the temperature being 45 to 55 DEG C and the rotating speed being 250 to 320 r / min; blank materials are obtained; the blank materials and the modified zeolite are mixed into a material mixing machine; the sodium bicarbonate is added into the material mixing machine; stirring and mixing are performed for 30 to 50 min under the conditions of the temperature being 40 to 60 DEG C and the rotating speed being 350 to 450 r / min; the deinking agent is obtained. By using the technical scheme, the prepared deinking agent has the characteristic of excellent deinking efficiency.

The invention provides a secondary doped silicon-based negative electrode material and a preparation method thereof, the secondary doped silicon-based negative electrode material comprises an inner core and a carbon coating layer; the inner core comprises silicon, a silicon oxide, silicate of a first metal element and silicate of a second metal element, the general formula of the silicon oxide is SiOx, x is greater than 0 and less than 2; the activity of the first metal element is lower than that of the second metal element; and the carbon coating layer is coated on the surface of the inner core. According to the secondary doped silicon-based negative electrode material and the preparation method of the secondary doped silicon-based negative electrode material, the first coulombic efficiency and the capacity retention ratio of a secondary battery can be improved.

The invention provides a method and a device for liquefying natural gas by using a propylene precooling mixed cryogen, aiming at solving the problems that a heavy hydrocarbon component needs to be added in a natural gas precooling cryogen for ensuring cooling effect when propane is used as the natural gas precooling cryogen so as to result in that pipelines and equipment are blocked and normal circulation operation is influenced. According to the invention, propylene is adopted to replace propane to be used as the precooling cryogen in a natural gas liquefying process with a mixed cryogen, and the precooling effects of the natural gas and mixed cryogen are improved through changing process flow, thereby obviously reducing energy consumption and simplifying liquefication flow equipment andoperation.

The invention relates to a special escalator for a shopping cart. The escalator comprises a steel frame and a skirt guard panel arranged on the steel frame. The escalator further comprises a supporting plate and a transmission device; the supporting plate is used for supporting the wheels of the shopping cart; the transmission device is used for pushing a shopping cart handle to move along the supporting plate; the transmission device comprises a transmission chain, a clamping mechanism connected with the transmission chain and used for clamping the shopping cart handle, a driving chain wheel,a driven chain wheel and a motor, wherein the driving chain wheel and the driven chain wheel are arranged at two ends of the transmission chain, and the motor is used for driving the driving chain wheel. The escalator for the shopping cart in a shopping mall can automatically clamp and convey the shopping cart; the escalator can be used in cooperation with a manned escalator side by side, so thatcustomers and carts can be separated from each other, and therefore, the safety of the customers is improved. The escalator is particularly suitable for public places such as large supermarkets and shopping malls with a huge number of customers. The escalator is simple in structure, stable in operation and low in manufacturing and maintaining cost; the escalator can be well clamped to or disengaged from the shopping cart; and the transportation efficiency and safety of the shopping cart are improved.

The present invention discloses a watermelon seed continuous kneading device. The watermelon seed continuous kneading device comprises a kneading chamber, a hopper, a drum, a nozzle, an electrical motor and a coupling member; a water leakage hole, the size of which is smaller than that of a watermelon seed, is arranged on the wall of the drum, and two ends of the drum are open; an output end of the electrical motor is connected to the drum by the coupling member; the drum is located within the kneading chamber; an inner wall of the drum is tilted and forms an angle of 1-2 degree with an axial direction of the drum; the hopper is communicated to an upper end of the drum by a feed line; the nozzle is mounted in the kneading chamber, and is arranged towards to the drum; the hopper is arranged in the kneading chamber, and the hopper can work coordinately to access watermelon seeds sliding from the lower end of the drum. By applying the scheme provided by the present invention, the device is less in difficulty to knead the watermelon seeds and is high in efficiency.

The invention discloses a scraper structure and a glue application method. The scraper structure comprises a body and a head. One end of the body is provided with a fastening handle, and the other end thereof is provided with the head. The width of the section of the head gradually decreases. In the glue application method, the head and a printing plate form an entry angle 10-40 degrees and a separating angle 10-40 degrees. In the scraper structure and the glue application method, the head of the scraper is designed a manner wherein the width of the section gradually decreases, so that the bottom of the scraper forms small gathering entry angle and separating angle 10-30 degrees, glue scraping and glue coating processes are smooth and meet hydromechanics principle, scraping thickness non-uniformity and bubbles caused by abrupt changes in sectional area of relative motion of the scraper and glue in conventional metal stencil printing are decreased, printing success rate and controllability are improved, printing quality can be improved, glue waste can be decreased, printing resistance is decreased, and production process convenience is improved.

A run flat tire having reinforced rubber layers (9a, 9b) disposed in the side wall parts has an annular swollen part (10) and an annular second bead (1b). The annular swollen part (10) is formed on the outer side, in the lateral direction of the tire, of a bead part (1) disposed on the outer side of a vehicle, and has an inner peripheral surface (11) facing the outer peripheral curved surface of a rim flange when a specified rim is installed on the tire. The annular second bead (1b) is disposed in the annular swelled part (10). Both the reinforced rubber layers (9a, 9b) disposed on both sides have a rubber hardness in the range from 65 DEG to 82 DEG . Belt layers (7) disposed on the lower side of the tread part (4) have longitudinal bending rigidity in the range from 0.9 to 2.1 10N.m.

The invention provides an outdoor barbecue grill, and relates to the field of barbecue equipment. The outdoor barbecue grill comprises a grill frame, a charcoal placing plate, a grill body, a supporting plate, a storage box and a ventilation mechanism, a rectangular groove is formed in the outer wall of one side of the grill frame, a sliding groove is formed in the inner wall of the bottom end of the grill frame, the inner wall of the sliding groove is slidably connected with the charcoal placing plate, and the supporting plate is movably connected with the outer wall of the bottom end of the grill frame through a hinge; the inner walls of the two sides of the barbecue grill are connected with the storage box in an inserted mode, the barbecue grill is connected with the inner wall of the barbecue grill frame in a clamped mode, and the ventilation mechanism is arranged on the barbecue grill frame located below the barbecue grill. According to the invention, the direct contact area of kebabs and the hollow pipes is reduced, and the cavities are formed in the hollow pipes, so that heat conduction is slow, the kebabs are prevented from being burnt due to overheating of the barbecue grill in the contact process with the kebabs, oil cannot directly drip on charcoal, open fire is reduced, and the temperature of all positions in the barbecue grill is more stable.

The invention relates to agricultural machinery, in particular to a design method and a device applicable to a corn sheller; the device comprises five parts, i.e. power transmission mechanisms, a threshing mechanism, a conveying mechanism, an impurity removing mechanism and a frame, and is characterized in that a drum of the threshing mechanism is provided with a screen hole, and the longitudinal direction of the screen hole is longer than the horizontal direction thereof; the power transmission mechanisms are arranged on both sides of the frame; the conveying mechanism comprises a pushing device and an elevating device, the pushing device is arranged on the lower side of the frame, the elevating device is arranged on one side of the frame, and the threshing mechanism and the impurity removing mechanism are fixed on the frame; each power transmission mechanism comprises a power access shaft head and a power access wheel; and when the power access shaft head serves as a power access point, the power access shaft head is connected with a power output PTO, a diesel engine or a motor in a transmission way. The invention not only has high efficiency and high purification to dry corn with skin or wet corn with skin, but also has simple structure, and can be combined with any power source.

The invention discloses environment-friendly flocculation treatment equipment for domestic sewage, which belongs to the technical field of sewage treatment. The equipment comprises a base; two sets ofsymmetrically-arranged damping buffer pieces are fixedly connected to the top face of the base, a vibration frame is fixedly connected to the top ends of the two sets of damping buffer pieces, two symmetrically-arranged vibration motors are fixedly connected to the top face of the vibration frame, a draining pool is fixedly connected between the inner surfaces of the vibration frame, a draining filter plate is clamped to the inner wall of the draining pool, draining holes distributed in a rectangular array are formed in the surface of the draining filter plate, and a circulating filter mechanism is fixedly mounted on the top surface of the vibration frame; the circulating filter mechanism comprises an outer shell, and the peripheral side face of the outer shell is fixedly connected with the vibration frame. Through the design of a flocculation tank, the circulating filter mechanism and the draining pool, the flocculation process in the sewage treatment process can be efficiently completed, and during flocculation of the device, solid flocs flocculated from sewage can be continuously filtered out through the filter mechanism.

The invention discloses a coal-based carbon negative electrode material, a preparation method and application thereof, and a battery containing the coal-based carbon negative electrode material. The preparation method comprises the following steps: S1, pretreating a coal-based raw material to obtain pulverized coal; the D50 of the pulverized coal is 1-35 [mu] m; the pretreatment sequentially comprises crushing, oxidation and re-crushing; s2, volatile organic compounds and the pulverized coal are evenly mixed, then low-temperature heat treatment is conducted, and modified pulverized coal is obtained; and S3, carrying out high-temperature heat treatment on the modified coal powder to obtain the coal-based carbon negative electrode material. The lithium battery and the sodium battery taking the coal-based carbon as the negative electrode material have relatively good electrical properties, and meet the commercial performance requirements of the lithium ion battery and the sodium ion battery with high energy density and high first coulombic efficiency; the method is especially suitable for the lithium battery field, the sodium ion battery field and the super capacitor field in the fields of consumer electronics, large-scale energy storage, low-cost batteries, low temperature and the like.

The invention discloses a high-performance composite positive electrode material as well as a preparation method and application thereof. The composite positive electrode material disclosed by the invention comprises carbon nanotubes with a MnO2 coating layer at least on the other surface, pyrolytic carbon and MnO2 nanoparticles dispersed between the carbon nanotubes with the MnO2 coating layer and the pyrolytic carbon. The composite positive electrode material obtained by the invention has good structural stability, and shows excellent specific capacity, rate capability and cycle performance.The composite positive electrode material has wide application prospects in the fields of energy storage, portable electronic equipment and the like.

An epoxy resin composition for semiconductor encapsulation which is for use in the resin encapsulation of semiconductor elements other than optical semiconductor elements including photoreceptors and light-emitting elements. This epoxy resin composition comprises the following ingredients (A) to (D) and has a content of ingredient (D) of 75-95% by weight based on the whole epoxy resin composition: (A) an epoxy resin, (B) a phenolic resin, (C) a specific release agent, and (D) an inorganic filler. The epoxy resin composition for semiconductor encapsulation which has improved adhesive force in application to metallic frame parts / heat radiation plates and can be inhibited from suffering separation from metallic frame parts / heat radiation plates during molding.

The invention provides a piece of punching equipment and a control method thereof. The punching equipment makes a sliding piece lift through driving an eccentric shaft to rotate by a motor. The punching equipment also includes a sliding piece position output device used to output a position of the sliding piece; a control device used to control the drive of the motor according to the position of the sliding piece output by the sliding piece position output device. The control device includes an arriving determining part determining whether the sliding piece arrives at a lower dead center; a stopping determining part determining whether the sliding piece stops or not; and a giving part giving vibration components. The giving part gives repeated vibration components of forward rotation and reverse rotation of the motor to a control instruction of the motor when the sliding piece stops near the lower dead center.

The invention discloses sizing agents for external coatings of positive and negative electrode coils of lithium ion batteries. The external coatings of the positive electrode coils are made of activated carbon, and the external coatings of the negative electrode coils are made of hard carbon. The activated carbon sizing agent used for coating comprises, by mass, 20-40% of activated carbon, 1.0-10% of conductive agents, 1.0-5.0% of binders and 50-78% of solvent. The hard carbon sizing agent for coating comprises, by mass, 35-55% of hard carbon, 2.0-10% of conductive agents, 1.0-15% of binders and 30-60% of solvent. Compared with batteries with the same specifications in the prior art, the lithium ion batteries with the sizing agents have the advantages that the performance is much better, battery recycling service life is particularly prolonged by more than 10 times, and momentary ultrahigh rate discharge indexes can be doubled.

The invention provides a pure-traditional-Chinese-medicine ointment for treating skin diseases and belongs to the technical field of traditional Chinese medicine ointments. The ointment is prepared byusing radix scutellariae, rhizoma coptidis, cortex phellodendri, rhubarb, radix astragali, rhizoma cyperi, rhizoma chuanxiong, herba andrographitis, olibanum, myrrh and borneol as the raw materials and fructus cannabis oil and bee wax as the base material, all the raw materials are natural raw materials, no chemical components are added, and the pure-traditional-Chinese-medicine ointment is safe,free of side effects, easy to absorb, quick in action, less prone to relapse, capable of avoiding drug dependence, good in curative effect on various skin diseases, capable of resisting inflammationand inhibiting bacteria, and also applicable to skin symptoms caused by skin burn, scalding, wounds and the like.

The invention is applicable to the technical field of screening devices, and provides a vibrating air screening device applied to metal parts, which comprises a shell, a vibrating screen barrel which is positioned in the shell, rotates automatically and vibrates up and down along the axis of the vibrating screen barrel, and a driving mechanism for driving the vibrating screen barrel to move; the vibrating screen barrel comprises an inner barrel and an outer barrel which are fixedly connected with each other; a plurality of sub storage spaces are uniformly distributed between the inner cylinder and the outer cylinder; the inner barrel is provided with a screen barrel inlet; a screen barrel outlet is formed in the outer barrel; a plurality of filter holes are formed in the outer wall of the outer cylinder, and bulges are arranged in the filter holes; a blowing nozzle is arranged on the outer wall of the outer cylinder; in this way, metal parts can be subjected to pile-dividing vibration treatment, the rust layer separation effect can be further promoted, and the rust layer separation efficiency is higher; centrifugal force generated by the vibrating screen barrel is matched with a vibrating effect to realize efficient separation of a rust layer; and during vibration, separated rust layers are blown out by utilizing airflow, so that the metal parts are treated more cleanly.

There are provided an endless belt having a structure containing at least three layers, a middle layer being disposed between the outermost layer and a bottom layer, and the middle layer being composed of a material having a thermal decomposition temperature lower than the deposition temperature of each of the outermost layer and the bottom layer, and provided a method for manufacturing the endless belt. There are provided an endless belt having high surface resistivity, an excellent toner releasing property, an excellent non-contaminated property, stable volume resistivity, excellent adhesion between a surface layer and an elastic layer, and the like without the occurrence of disadvantageous bleeding of a contaminant, and a method for manufacturing the endless belt.

In a method for separating wafers from a support device (17), wherein the wafers are formed by sawing a wafer block (40) fastened to the support device (17) by way of adhesives, and wherein the wafers themselves are still adhering on one side, the support device (17) with the wafers is driven along a constant plane of motion into an adhesive removal device (47). The support device remains therein and is enclosed in an adhesive removal basin (55, 55a, 55b) by moveable wall parts (52a, 52b). After forming and closing the adhesive removal basin (55, 55a, 55b), solvent for removing the adhesive is placed in the adhesive removal basin and onto the wafers for dissolving the adhesive and then removing the wafers from the support device (17).

The invention discloses an agricultural corn grain lossless threshing device, and relates to the field of agricultural corn threshing devices. The agricultural corn grain lossless threshing device comprises a device supporting panel, supporting legs are fixedly connected to the four corners of the bottom of the device supporting panel, a fixing plate is fixedly connected to the top of the device supporting panel, a fixing block is fixedly connected to the top of the fixing plate, a fixing outer ring is fixedly connected to the top of the fixing block, an inner groove is formed in the inner wall of the fixing outer ring, a plurality of balls are clamped inside the inner groove, and an inner ring pipe is rotationally connected to the axis position of the fixing outer ring. The agricultural corn grain lossless threshing device is simple in overall structure, convenient to use and low in manufacturing cost, and parts of all parts are few and not prone to damage in later use, so that it is guaranteed that the later maintenance cost is low, maintenance is convenient, when the device is used, a user can conveniently thresh corn, threshing is simple and efficient, and time and labor are saved.