34results about How to "Eliminate impact on product quality" patented technology

The invention relates to a full-automatic cutting machine of numerical controlled valve, which comprises a machine body, a feeding mechanism, a positioning mechanism, a geared head, a knife rest mechanism, a pushing mechanism and a numerical controlled electric box. The positioning mechanism utilizes a rigid ball base rotary positioning head and a positioning fixture at the end face of a valve disk part in the geared head to realize the full length cutting processing of the valve, and utilizes a flexible ball base rotary positioning head and a positioning fixture at the conical surface of the valve disk part in the geared head to realize the L-check size grooving processing of the valve. The rigid and flexible ball base rotary positioning heads overcome friction between workpieces and a positioner, eliminate the influences of the flat beat of the valve on positioning precision and the length precision of the processed valve reaches +/- 0.025mm. The cutting machine has simple structure, convenient operation and high full-automatic processing efficiency, is applicable to the full length cutting and grooving of the valve, and can be expanded to use the conical surface of the valve to position and process a sandwich groove of a lock and chamfer the end face of a valve rod; therefore, the full-automatic cutting machine has a wide application prospect.

The invention relates to a levetiracetam tablet. The levetiracetam tablet at least comprises levetiracetam used as an active component and a binder accounting for more than 6% of the total weight of the tablet. The invention further relates to a preparation method of the levetiracetam tablet. The improved levetiracetam tablet is simple in production technology and low in cost, and is suitable for commercial production.

A process for preparing heptahydrated zinc sulfate from the residual liquid after extracting indium and zinc oxide includes such steps as preparing the extracting liquid from said residual liquid and sulfuric acid, heating, extracting zinc oxide while stirring, laying aside, filtering, oxidizing the filtrate by potassium permangnate for removing Fe and Mn, cleaning by using zn powder for displacement, concentrating, crystallizing, separating and drying.

The invention discloses a preparation method of high-purity alkylammonium tetrafluoroborate for a super capacitor, characterized by reacting tertiary amine with tetrafluoroborate alcoxylonium salt at a certain temperature to obtain corresponding alkylammonium tetrafluoroborate, and purifying to obtain the high-purity alkylammonium tetrafluoroborate. The method has the advantages of simple operation steps, good selectivity, high conversion rate, high product purity, and no halogen ions, and can satisfy the requirements of a high performance super capacitor. The use of the prepared alkylammonium tetrafluoroborate as an electrolyte in the super capacitor can achieve the advantages of high product capacity, low internal resistance, and reduced capacity fade at a high temperature.

The invention discloses a two-way and double-station threading machine which comprises a stand; the stand is provided with a movable bracket; a thread tapping main shaft is driven to work left and right by the movable bracket so as to carry out alternate processing on two workpieces, so that the idle waiting time is shortened, and the production efficiency is increased; furthermore, the workpieces are matched with the movement of a screw tap, and the loss of the screw tap is less; the influence of human factors to the product quality is completely eliminated in the production, the problems of thread tapping concentric reducer and slanting buckling of the traditional device can be solved, and the thread tapping products are high in yield.

The invention relates to a special fixture for radial porous parts, and the special fixture comprises a base, wherein the base comprises a first plane and a second plane which are vertical to each other, a drilling template is arranged on the first plane, a hole site is formed on the drilling template, and a screw hole and a draw bar hole are formed on the second plane, a screw is rotatably arranged in the screw hole, one end, positioned below the drilling template, of the screw is provided with a locating shaft for installing a part to be processed, the screw is also fixedly provided with a locating block, the locating block is arranged between the locating shaft and the base, a panel, opposite to the base, of the locating block is provided with a plurality of locating pits, a draw bar is rotatably arranged in the draw bar hole, one end of the draw bar is connected to a draw bar handle, the other end of the draw bar is provided with a draw bar contact head which can retract under external action and extend in a free state, the draw bar contact head is arranged at one side, which is provided with the locating block, of the base, and the draw bar contact head is positioned in the locating pits when in the free state. After the fixture is used, the processing efficiency is greatly improved and the product quality is stable.

The invention provides a precast concrete material distributing machine and relates to the technical field of concrete pouring equipment. The precast concrete material distributing machine mainly solves the technical problems that in the prior art, the concrete manufacturing process has low automation degree and needs multiple people to work collaboratively. The precast concrete material distributing machine comprises a mold pushing device, a feeding device, vibration devices and a vehicle-loading device. The feeding device is located on the mold pushing device, and the mold pushing device canpush molds under the feeding device. The mold pushing device is connected to the vibration devices so that the molds can be transferred to the vibration devices after being filled. The vibration devices are connected to the vehicle-loading device, and the vehicle-loading device transfers and/or loads the molds on the vibration devices. By the adoption of the precast concrete material distributingmachine, the automation degree of the production process of precast concrete can be effectively increased, and the different product quality caused by the difference in the degree of operation and/orthe operation precision of operators is avoided; and on the other hand, the number of operators can be reduced from 6 to 7 people to 1 to 2 people, and thus the personnel cost is reduced.

The invention discloses a tab flattening method of all-tab cylindrical lithium batteries. The tab flattening method of the all-tab cylindrical lithium batteries mainly comprises the following steps: sleeving each all tab with a flattening sleeve; and therefore, making a flattening head get close to the flattening sleeve while rotating so that the flattening head can directly grind and act on the flattening sleeve after being in contact with the flattening sleeve, and driving the flattening sleeve to elastically deform so that grinding force can be conducted and act on the all tabs to complete flattening. According to the flattening method, the flattening head is not in direct contact with the all tabs, that is to say, the flattening head is not in direct contact friction with the all tabs, and thus the soft all tabs can be effectively prevented from being partially crushed, so that effects on the product quality are eliminated, and the qualification rate and the safety performance of products are better improved; and meanwhile, the flattening sleeve is made of a wear-resistant elastic deformation material so that the elasticity can be recovered after flattening of the all tabs is completed, and thus the working purpose of circular flattening can be achieved.

The invention discloses an automatic unloading device for UO2 grinding core blocks. The automatic unloading device comprises a mechanism for stacking core blocks on a tray, a core block off-line scrubbing mechanism, a charging tray carrying mechanism, an empty charging tray loading mechanism and a full charging tray unloading mechanism; after core blocks on a grinding line enter the device, the core blocks are firstly stacked orderly row by row through the mechanism for stacking the core blocks on the tray; after the whole tray of the core blocks is stacked, the core blocks are poured out of the tray, and enter the core block off-line scrubbing mechanism to be scrubbed off line; after the core blocks are scrubbed off line, the tray filled up with the core blocks is fed to the charging trayunloading mechanism for being stacked through the charging tray carrying mechanism; and empty charging trays are carried to the tail end of the core block offline scrubbing mechanism from the charging tray charging mechanism through the empty charging tray loading mechanism to wait for loading. The automatic unloading device for the UO2 grinding core blocks belongs to professional equipment, completely depends on independent development and development, and is initiative in China.

The invention discloses a punching machine for an integral ceramic fiber module. During use, the to-be-punched integral ceramic fiber module is placed on a workbench, then a second air cylinder pushesan anti-rising plate to move downwards until the anti-rising plate just makes contact with the integral ceramic fiber module, then a first air cylinder pushes pressing heads to move downwards in thevertical direction to perform punching, when the pressing heads return, the anti-rising plate still blocks the integral ceramic fiber module so as to make the integral ceramic fiber module stay on theworkbench, when the pressing heads are completely separated from the integral ceramic fiber module, the anti-rising plate returns to the original position in the vertical direction under the action of the second air cylinder, so that one punching cycle is completed; and the above operation steps of punching are repeatedly executed, and therefore continuous punching can be carried out on the integral ceramic fiber module, the punching efficiency of the integral ceramic fiber module is improved, and the influence of human factors on the product quality is eliminated.

The invention relates to a feeding device for amorphous alloy ribbons, which is provided with a feed channel for transporting the amorphous alloy ribbons. The feed channel comprises distributing racks which are arranged in sequence, a vibrator, a cradle and upper and lower feed rollers, which are distributed on a rack in sequence, wherein, the vibrator is provided with a vibrating trough which isconnected with a vibration driving mechanism driving the vibrating trough to vibrate; the vibration driving mechanism can comprise a vibrating cylinder and a pressure-regulating valve of the vibrating cylinder; the front of the bottom surface of the vibrating trough is hinged with the rack and the back thereof is connected with the cylinder. The feeding device features simple structure, convenient use and high production efficiency and can automatically remove the scraps on the amorphous alloy ribbons so as to avoid the operators from being harmed and the product quality from being influenced.

The invention relates to an electromagnetic damping type automatic tobacco sorting manipulator. The manipulator is arranged above a conveying belt used for conveying tobaccos, and comprises a brush mechanism and two guide rails, wherein the brush mechanism is used for sweeping the tobaccos on the conveying belt into a tobacco collecting box, the two guide rails are arranged in parallel up and down, and form a rail which is across the conveying belt to be used for enabling the brush mechanism to move back and forth on the rail, an electromagnet is arranged on one end of the rail, an elastic damping mechanism is arranged on the other end of the rail, the brush mechanism is connected with the elastic damping mechanism, an armature which can overcome the elastic force of the elastic damping mechanism so as to be attracted to the electromagnet when the electromagnet is electrified is fixed on the brush mechanism, a photoelectric sensor is arranged above the conveying belt, and both the photoelectric sensor and the electromagnet are connected with a control mechanism. The electromagnetic damping type automatic tobacco sorting manipulator has the advantages of simple structure and high degree of automation and is favorable for improving the product quality, releasing the labor force and saving the cost.

The invention relates to the field of mixing devices in the chemical industry, in particular to a device and method for continuously preparing azo compound. After the diazonium salt solution in a first storage tank 101 and the coupling component solution in a second storage tank 102 continuously collide, mix and react in an impinging stream stirring reactor 109, the generated material is conveyedinto a slurry tank 111 under the action of a discharge pump 110, and the azo compound is obtained. The device is compact in overall structure and small in occupied area, can be used for chemical unitoperation of extraction and rapid mixing reaction, is particularly suitable for reaction for producing high-viscosity materials after mixing reaction, and facilitates continuous operation. According to the method disclosed by the invention, a micro impinging stream technology is combined with a stirring reactor so that mass transfer is enhanced, the blockage problem is effectively prevented, automatic control is conveniently realized, the reaction efficiency and the product yield are improved, and continuous synthesis of the azo compound is realized.

The invention belongs to the technical field of petroleum processing, and relates to a flash distillation washing method for the atmospheric and vacuum distillation of crude oil. The method comprises the following steps: carrying out heat exchange on petroleum dehydrated crude oil, so that light components are vaporized, then feeding oil gas into a flash distillation washing tower through a pipeline to carry out flash distillation, so that light and heavy components of the oil gas are separated; taking flash distillated oil gas carrying the heavy components and part of second side cut distillate oil from an atmospheric tower as washing oil, carrying out reverse contact on the washing oil on packing in the flash distillation washing tower to carry out washing and mass transfer separation, so that flash top oil gas escapes from the top of the flash distillation washing tower and then enters an upper gas-phase space of a second side cut oil extraction plate of the atmospheric tower, and heavy-component washing oil is extracted from an oil collecting tank of the flash distillation washing tower and then automatically flows to places above and below a third side cut extraction plate of the atmospheric tower; after un-vaporized flash bottom oil is pumped out by using a pump from the bottom of the flash washing tower, carrying out heat exchange on the un-vaporized flash bottom oil and heating the un-vaporized flash bottom oil by using an atmospheric furnace, and then feeding the un-vaporized flash bottom oil into the atmospheric tower so as to separate out atmospheric overhead oil, atmospheric lateral line distillate oil and atmospheric heavy oil through distillation. The method disclosed by the invention is reasonable in process route, good in adaptability, good in energy conservation, low in investment, convenient to control, and friendly in production environment.

The invention discloses a method for producing a yeast extract by use of bacterial residues after tetracycline degradation, belonging to the technical field of microbial fermentation. The method comprises preparation of saccharomyces cerevisiae, candida tropicalis and EM (effective microorganisms) second-order seed, preparation of aspergillus niger seed, preparation of a bacterial residue culture medium and preparation of the yeast extract, wherein the preparation of the yeast extract comprises the following steps of performing inoculation culture on the prepared several kinds of bacteria; then adding a yeast extraction enzyme according to an amount of 0.03% by mass; hydrolyzing for 16-24 hours; heating to 80 DEG C to inactivate the enzyme; after the product is cooled, centrifuging for 10 minutes at a speed of 4,000r/min; performing reduced-pressure concentration on the filtrate while controlling the moisture to 15-20% to obtain the yeast extract. The method disclosed by the invention has the advantages of low production cost, simple and unique preparation process and short production period, and can realize high-value conversion of tetracycline bacterial residues.