89results about How to "Product quality is easy to guarantee" patented technology

The invention relates to a preparative method of pseudo-boehmite, belonging to the field of the preparative technology of alumina exclusive of metallurgical usage. The method comprises the steps as follows: sodium metaaluminate solution is carbonated into mucus, aging, separating, washing and drying. The invention is characterized in that after the sodium metaaluminate solution becomes mucus, pulp-liquid separation is carried out primarily; filter cake is added; heating and aging are performed after water washing and mixed pulping. The invention has the advantages of low washing water consumption, low production cost, easy control of product quality and good practicality.

The invention relates to a machining method of a long-rod motor stand, wherein boring is carried out by utilizing a horizontal lathe, and in the boring process, the stand longitudinally moves through a large dragging plate of the horizontal lathe, a boring cutter is driven by a long cutter rod to rotationally move through the main shaft of the lathe to realize the inner hole machining for the stand, and the machining method comprises the steps of clamping and boring. Because the machining method of changing turning into boring on the horizontal lathe is adopted by the invention, the stand of a long-rod motor such as a VLB type motor is convenient to machine, lathe equipment is easily satisfied, and the quality of a machined product is easily ensured; and the machining is finished through once clamping, therefore, the coaxiality of the stand machined through the horizontal lathe is ensured, and the invention lays a foundation for meeting the coaxiality requirement of three parts of the long-rod motor stand such as a VLB type motor stand and reaches the design requirement on the performance of the produced VLB type motor.

The invention relates to VDMOS and IGBT power device with composite grid and self-isolated grid-source. Wherein, it sets a thermal-oxidized SiO2 grid between source and multicrystal Si grid, and adds a Si3N4 layer to form a composite grid together with last grid to increase grid yield. Compared with prior art, this invention increase can fast shield grid window and generate only -very-thin oxidation layer to simplify manufacture technology, and needs low cost.

The present invention relates to an overturn seal testing and marking apparatus combining work piece seal testing with work piece marking. The apparatus includes a support, a carrying mechanism, a positioning mechanism, a rotary deadlock mechanism, an overturn mechanism, and a marking mechanism. The positioning mechanism and the rotary deadlock mechanism are arranged on an overturn support of the overturn mechanism. The carrying mechanism is provided with a clamping air claw. A work piece is arranged on the positioning mechanism through the carrying mechanism, and is locked by the rotary deadlock mechanism. The positioning mechanism, a rotary deadlock sealing mechanism and the work piece are overturned together by the action of the overturn mechanism. The marking mechanism is mounted on an over beam on the front side of the support. A gas-type fitting is arranged on a pre-positioning installation disk of the positioning mechanism and the seal compaction block of the rotary deadlock mechanism separately. A gas tightness detector detects the gas tightness of the work piece through the gas-type fitting after the overturn mechanism drives the overturn of the work piece, and then the marking mechanism marks the work piece. According to the invention, the work piece seal testing and the work piece marking are combined so that the land occupation is saved and the working efficiency is increased.

An auxiliary pressurizing device for sleeve assembling comprises a base. A sliding trolley is arranged on the base, a centering mechanism is arranged on the sliding trolley, columns are arranged on two sides of the base, a crossbeam is arranged at tops of the columns, a pneumatic mechanism is arranged on the crossbeam, and a pressure plate component below the crossbeam is arranged below the pneumatic mechanism. The auxiliary pressurizing device for sleeve assembling has the technical advantages that the auxiliary pressurizing device is relatively simple in structure, convenient to operate, and suitable for sleeving of products of different types and specifications; other special operating tools need not to be provided, except that an air source needs to be provided for a plant; by the aid of the device, working efficiency can be greatly improved, and product quality is guaranteed more easily than that by a common balancing weight pressurizing mode.

The invention relates to a crispy pleurotus eryngii chip and a preparation method thereof. The pleurotus eryngii chip is made of raw materials including, by weight, 20-40% of pleurotus eryngii powder, 55-70% of glutinous rice flour, 0.3-0.6% of gluten flour, 0.1-0.25% of sodium alginate, 0.1-0.25% of sodium carboxymethylcellulose, 0.025-0.05% of vitamin C, 0.025-0.05% of tea polyphenol, 0.45-1.0% of quail egg liquid, 0.5-1.0% of threefold vitamin B complex solution, 3.0-5.0% of starch and 0.5-1.8% of salt. The preparation method is performed according to a technological process including: preparing the pleurotus eryngii powder, blending ingredients, kneading pastes, slicing, frying, deoiling and packaging to obtain a finished product. The crispy pleurotus eryngii chip is rich in nutrition and crispy and delicious, and is both leisure food and health food, so that people's selection of pleurotus eryngii products is enriched. The crispy pleurotus eryngii chip is simple and prone to industrial production.

The invention discloses a positioning device for a connection plate of a steel column and a steel beam and belongs to the technical field of steel structure buildings. Three T-shaped grooves are formed in one end of a base at equal intervals and in parallel. A sliding block is arranged in the middle T-shaped groove. A rotary shaft is vertically fixed to the sliding block. An angle adjusting plate is installed on the rotary shaft. Long strip-shaped holes are symmetrically formed in the two ends of the angle adjusting plate. A T-shaped end bolt is arranged in each long strip-shaped hole. A baffle is fixed along an inner edge opening of the angle adjusting plate, and the baffle and the angle adjusting plate are perpendicular to each other. The positioning device has the advantages that universality is good, the labor efficiency during production is high, and the product quality is easily ensured.

The polishing diamond block with metal binder includes one grinding layer, one transition layer and one assembling layer, and features the grinding layer including metal binder and diamond crystal once formed integrally and with slots and holes, and the assembling layer in a tail structure. The present invention has no environmental pollution, low power consumption, high efficiency, long service life and stable product quality, and is suitable for grinding and polishing ceramic tile, stone and glass product.

The invention relates to a synthesis process of industrial production of gemcitabine hydrochloride and pertains to the field of chemical product synthesis process. The invention takes 2, 3-oxygen-isopentylidene-D-glyceraldehyde as the raw materials and respectively uses TBDPSCl and benzoyl chloride to protect hydroxyl to produce an intermediate after addition, ring opening and cyclization. The intermediate is condensed with cytosine after reduction and methyl sulfonylation and then acquires gemcitabine hydrochloride after de-protection and salification. The invention has the advantage that TBDPSCl is adopted to protect one of hydroxyls, thus increasing the stability of the intermediate double benzoyl and facilitating the separation and purification of the product. The invention solves the problem in the prior gemcitabine hydrochloride production process that the intermediate double benzoyl protector is unstable and easily de-protected in alkalescence, thus affecting the product quality and yield. The total yield of the synthesis process is 17.9 percent and the purity is above 99.8 percent, thus being particularly applicable to the industrial production of gemcitabine hydrochloride.

The invention discloses a double-layered water and tidal drainage device of a sectional combined floor drain. The double-layered water and tidal drainage device comprises an adjustable double water drainage casing pipe which comprises an inner pipe and an outer pipe. The inner pipe and the outer pipe are adhered through a solvent adhesive for a plastic pipeline system. A plurality of first permeable holes are formed in the inner pipe, a plurality of second permeable holes are formed in the outer pipe, the second permeable holes are formed close to the upper end of the outer pipe, and first reinforced concrete structures are poured on two sides of the outer pipe. The adjustable double water drainage casing pipe is pre-buried in a position of a main drain pipe or the floor drain. By engineering means of joint action of the water drainage casing pipe, a plastic water drainage plate, geotechnical cloth and the like, sewage accumulated below a finish coat of a toilet is drained thoroughly,so that environment-friendly, healthy, attractive and safe purposes are achieved.

The invention relates to an insulating bearing with an insulating ferrule and a manufacturing method thereof. The insulating bearing is characterized in that either an outer ring or an inner ring is the insulating ferrule, the insulating ferrule comprises a whole-body insulating ferrule or a half-body insulating ferrule, the whole-body insulating ferrule is made from a whole-body insulating material, and the half-body insulating ferrule is formed in a manner that a steel ferrule and an insulating ferrule are integrated through mechanical press-mounting or injection molding. According to the insulating bearing with the insulating ferrule and the manufacturing method of the insulating bearing with the insulating ferrule, the design and manufacture of the insulating ferrule are simple and easy, the insulating ferrule can be used for manufacturing insulating bearings of any type and shape, and the manufacturing cost is reduced; and meanwhile, the existing insulating coating is replaced with an insulator, so that the insulating reliability of the insulating bearing is greatly improved, the electrical erosion failure of the bearing can be effectively avoided, and then, the running reliability of the bearing is improved and the service life of the bearing is prolonged, thereby having practical engineering significance.

The invention provides an axis runout trajectory testing device for a combined harvester threshing drum. The device comprises a magnetic outer casing, a magnetic hanging brush, a coordinate card and ashaft end adsorption mechanism, which are coaxially mounted; one end of the magnetic outer casing is connected with one end of the shaft end adsorption mechanism; one side of the coordinate card is mounted on one end of the shaft end adsorption mechanism; the magnetic suspension brush is suspended and fixed inside the magnetic outer casing; a tip of one end of the magnetic suspension brush abutsthe other side of the coordinate card; the magnetic suspension brush is positioned in suspension, and the other parts rotate together with the axis; the brush records a trajectory which is an upside down and left-and-right mirroring version of the actual axis runout trajectory on the grid coordinate card; and finally the grid coordinate card is inserted into a card reader to obtain an amplified erect axis runout trajectory. The device can be applied to test the runout state of the threshing drum of various rice combine harvesters, and can solve the problem that the existing threshing drum axisrunout test device is susceptible to friction damage by the threshing drum shaft.

The invention discloses a porous mixed ammonium nitrate explosive which comprises the constituents (by weight percent) of porous ammonium nitrate 10-50% and powdery emulsified explosive 50-90%. The invention realizes good water resistance, high explosion speed and better explosion property.

The invention discloses a device and a method for regulating potassium feldspar powder size distribution. The device comprises an air regulation system arranged on a discharge hole of a ball mill, wherein the air regulation system comprises a material bin, a main air pipe and a side direction air inlet pipe; the middle in the side direction of the material bin is connected to the discharge hole of the ball mill, one end of the main air pipe is connected to the upper end of the material bin, the other end of the main air pipe downward extends and is bent so as to form a confluence section passing through the lower part of the material bin, and the lower end of the material bin is connected to the confluence section; the side direction air inlet pipe is arranged on the confluence section and is internally provided with an air regulation switch, and a rotating baiting valve is arranged between the lower end of the material bin and the confluence section. The device and the method provided by the invention have the advantages that the air volume of the side direction air inlet pipe is flexibly adjusted in real time in a production process according to the size distribution requirement of the potassium feldspar powder, thus the size distribution of the potassium feldspar powder is adjusted, the production flexibility is greatly improved, and the product quality is easy to guarantee.

The invention provides a motor driven four-way reversal valve which has the advantages of compact structure and lower manufacturing cost. The four-way reversal valve comprises a synchro motor and a cam member driven by the synchro motor, wherein the rotating angular velocity of the cam member is same to that of a reversing rotor, and a location switch with a normally open contact, a normally close contact and a public contact is arranged nearby the cam member; the cam member is provided with a cam used for leading the location switch to act and allowing the work position of the location switch to change once when the cam member rounds one-quarter circumference; when the reversing rotor is located in a heating position, the contact which is just switched to be disconnected with the public contact on the location switch is a heating contact, and the other contact is a refrigerating contact; and the heating contact is conducted with a heating supple line, the refrigerating contact is conducted with a refrigerating supple line, the public contact is conducted with one electrode of the synchro motor, and the other one electrode of the synchro motor is conducted with a concentric line. The four-way reversal valve provided by the invention has the advantages of short conduction time, high motion reliability, simple structure, simplified fitting process, lower cost and the like.

The invention discloses a preparation process of a rubber composite material for an oil-resistant sealing rubber strip. The invention relates to the field of sealing rubber strips. The main materialscomprise the following components in parts by weight:90-110 parts of NBR, 3.5-4.5 parts of an active agent, 0.38-0.42 part of stearic acid SA, 56-64 parts of a filler, 0.48-0.52 part of sulfur, 0.7-0.9 part of an accelerant, 5-7 parts of a cold-resistant plasticizer DOA, 4-5 parts of an anti-aging agent and 2.3-2.7 parts of a vulcanizing agent DCP. The preparation method comprises the following specific preparation steps: S1, mixing; s2, vulcanization sample preparation. According to the invention, by means of the NBR, active agent, stearic acid SA, filling material, sulfur, promoter, cold-resistant plasticizer DOA, anti-aging agent and vulcanizing agent DCP, a mixing process is adopted, optimal processing parameters can be obtained through vulcanization sample preparation, the prepared sealing rubber strip has the characteristics of excellent corrosion resistance, aging resistance, cold resistance, oil corrosion resistance and the like, the sealing rubber strip is also suitable for mass production, and the product quality and the yield can be well guaranteed.

The invention discloses a FCT tool device provided with a manipulator capable of pressing a button automatically. The FCT tool device comprises a pedestal, which is provided with a main board supporting seat. One side of the main board supporting seat is provided with the manipulator, which is connected with a control device, and comprises a motion connecting rod used for pressing the main board button. The control device comprises a programmable controller and a host computer, which are connected together. The programmable controller is connected with the manipulator by a relay. The FCT tool device provided by the invention is advantageous in that the mechanical automatic operation and the unmanned test can be realized; by adopting the automatic button pressing way, the test efficiency can be improved, the detection reliability can be improved, and therefore the product quality can be guaranteed.

The invention discloses a device for continuously rectifying and refining cyanoacetate and a technology thereof. In the device, the lower middle part of a cyanoacetate product tower is connected to arecycling kettle; the top of the cyanoacetate product tower is connected with a cyanoacetate product tower top reflowing tank through a cyanoacetate product tower top condenser and a cyanoacetate product tower top catcher; the cyanoacetate product tower top reflowing tank is connected with the upper middle part of the cyanoacetate product tower through a cyanoacetate product tower top reflowing pump; the top of a malonate second-grade rectifying tower is connected with a malonate second-grade rectifying tower top reflowing tank through a malonate second-grade rectifying tower top condenser anda malonate second-grade rectifying tower catcher; the malonate second-grade rectifying tower top reflowing tank is connected to the upper middle part of the malonate second-grade rectifying tower through a malonate second-grade rectifying tower top reflowing pump. The device disclosed by the invention has the advantages that a production process is continuously carried out, the utilization rate of equipment is high, the production capability is great, the production efficiency is high and the labor intensity of workers is low.

The invention discloses a fabricated vertical shaft barrel structure and a design and construction method thereof. The fabricated structure of each layer starts from lap joint inserting ribs, then dense rib column steel bars are bound, lower annular beam steel bars are bound, double-wall-plate standard components are hoisted in place and sequentially assembled into a ring to form a vertical shaftbarrel of the current layer, upper annular beam steel bars are bound, joint bars are reserved at the positions of the upper-layer dense rib columns, annular vertical inner cavity beam column concreteis poured, and a triangular truss scaffold is installed. Compared with a traditional underground deep vertical shaft barrel structure design and the construction method, the fabricated vertical shaftbarrel structure has the advantages that main components and parts are industrially prefabricated in a factory, the standardization degree is high, machining is accurate, production efficiency is high, product quality is easy to guarantee, traditional formworks are replaced with prefabricated parts, an assembly structure is not limited by a working face, an environment-friendly construction mode is achieved, construction is convenient and fast, work efficiency is high, lap joint of all procedures is smooth, no complex staggered support or scaffold system exists on a construction site, and safeand civilized construction is guaranteed.

The present invention relates to an additive of a road asphalt material, and specifically to an anion slow-cracking asphalt emulsifying agent of an emulsified asphalt material for the high speed railway, and a preparation method thereof. The raw material components of the anion slow-cracking asphalt emulsifying agent comprise polyoxyethylene fatty alcohol ether, water, sodium ligninsulfonate with a quality content more than 95% and a carboxylate anion surfactant, wherein a weight ratio of the components is (4-5):(0.8-1.0):(2-2.5):(1-1.5). The anion slow-cracking asphalt emulsifying agent and the preparation method of the present invention have the following advantages: 1, the single emulsifying agent is adopted as a product form capable of direct use, and can be directly used by the user, such that the preparation processes of the cement asphalt mortar (CA mortar) and the emulsified asphalt are simplified, and the product quality is easy to ensure; 2, the preparation method has characteristics of simpleness, safety, environmental protection, and no pollution; 3, the prepared emulsified asphalt product provides better mobility compared to the existing products; 3, the product preparation cost of the present invention is lower than the cost of the existing asphalt emulsifying agent for the CA mortar.

The invention relates to an eccentric machining method for the excircle of a piston. The method comprises the following steps: positioning and straining a piston on a numerical control machine tool which has a revolving shaft; selecting a milling cutter according to machining efficiency, roughness of a machining surface and a machining material; constructing a mathematical model of the running track of the milling cutter and writing a program into the numerical control machine tool; inputting original data of each parameter; operating a macro program to machine the piston; completing machining as operation of the macro program finishes. According to the invention, the machining method can carry out eccentric edge-cutting machining on the excircle of a variety of pistons; operation is convenient; the defect of a long period in manufacture of turning tooling in conventional eccentric machining of pistons is overcome; flexibility of eccentric machining is realized; varieties of machining pistons greatly increase; on-site batch machining of pistons in enterprises can be carried out; product quality is easily guaranteed.

The invention discloses a machining tool and machining method for a deep and long annular cavity. The machining tool comprises a tool body and a blade fixed to the tool body; the tool body comprises a working part used for supporting the blade to work and a clamping reinforcing part which is convenient for clamping and is used for reinforcing the strength of the tool body; the working part and the clamping reinforcing part of the tool body are each provided with a tool body front side face achieving profile modeling with the inner side face of the deep and long annular cavity, and the working part of the tool body is provided with a tool body rear side face achieving profile modeling with the outer side face of the deep and long annular cavity; the thickness of the working part of the tool body is smaller than the distance between the outer side face and the inner side face of the deep and long annular cavity. According to the machining tool and machining method for the deep and long annular cavity, operation is easy, the machining efficiency is high, the product quality is easily guaranteed, and the problem that a deep and long annular cavity type structure is difficult to machine can be effectively solved.