43results about How to "Guaranteed break" patented technology

The invention provides a continuous flow method for measuring total alkaloid in tobacco or tobacco products. In the method, potassium thiocyanate and sodium dichloro isocyanurate are adopted to carry out reactions to generate cyanogen chloride on line. The cyanogen chloride can carry out reactions with total alkaloid (calculated in the form of nicotine) in tobacco or tobacco products to break off the pyridine rings of nicotine, and then further carries out reactions with p-aminobenzene sulfonic acid. The reaction products are measured by a chromometer at 460 nm. The method uses a buffer system to control the pH value of the reaction system in a range of 6.0 to 7.5, and the buffer system is composed of a buffer solution A and a buffer solution B. The buffer solution A is prepared by the following steps: weighing disodium hydrogen phosphate and trisodium phosphate, placing the weighed substances in a beaker, dissolving the substances with water, transferring the solution to a volumetric flask (1L), and adding water into the volumetric flask until the water reaches the scale. The buffer solution B is prepared by the following steps: weighing p-aminobenzene sulfonic acid, disodium hydrogen phosphate, sodium dihydrogen phosphate, and sodium citrate, placing the weighed substances into a beaker, dissolving the substances with water, transferring the solution to a volumetric flask (1L), and then adding water into the volumetric flask until the water reaches the scale.

The invention relates to a cold isostatic pressing forming preparation method of a nickel oxide-based ceramic target material, wherein the method comprises the following steps: A, preparing raw materials: preparing mixed powder of nickel oxide powder and doped source powder, wherein the total mass fraction of doped source elements in the mixed powder is not more than 10%, wherein the doping sourceelement is selected from one or more of 0-6% of Li, 0-0.3% of Na, 0-1.0% of Mg, 0-0.1% of Al, 0-0.1% of Si, 0-0.15% of K, 0-12% of Zn, 0-1.5% of Zr, 0-1.2% of Mn, 0-10% of Cu, 0-1.2% of Cr, 0-0.3% ofV, 0-10% of W and 0-2.5% of Ti; B, carrying out spray drying; C, compacting by vibration; D, feeding a mold into a cold isostatic pressing chamber for pressing; E, degumming a biscuit; F, sintering;G, cooling after heat preservation is finished; and H, machining or not machining according to needs. The preparation method can be used for preparing the nickel oxide-based ceramic which is good in conductivity, relatively high in purity and fine in grain size.

The invention provides a paper-breaking method and a paper-breaking mechanism for a rewinder. The paper-breaking method is characterized in that the rotating speed of one drive roller of the rewinder is momentarily higher than the rotating speed of the other two drive rollers so that a paper holder fast rolls towards the direction where three drive rollers are separated from one another, and before the paper holder is completely separated from the three drive rollers, paper at the tail part of the paper holder is broken. The paper-breaking mechanism is essentially characterized in that one drive roller of the rewinder is connected with a sudden acceleration speed changer. The invention has the working principle that the rotating speed of the drive rollers is suddenly changed to break the paper so as to prevent a press block from pressing the paper like the prior art in the process of paper breaking and also avoid the strict condition which is needed to be met when the press block is momentarily contacted with the paper. The invention can easily ensure that the paper at the tail part of the paper holder is broken on the same perforatig line.

The invention relates to a dispenser of fluid material, said dispenser including: a fluid material tank (1) provided with a neck (11) that is threaded on the outside thereof and defines, on the inside thereof, an opening (10) that is in communication with the inside of the tank, the neck (11) forming at least one helical thread (13); and a dispensing head mounted onto the neck (11) by means of an attachment member (3, 4) that meshes, at the same time, with the threaded neck (11) and the dispensing member (2), the attachment member (3, 4) including a ring (3), said ring forming a receiving means (32) for the dispensing member (2), an annular plate (33), and an apron (31) that meshes with the threaded neck (11). Said dispenser is characterized in that the ring (3) includes a breaking means (35, 36), between the plate (33) and the apron (31), for separating the plate from the apron through rotation of the ring (3) on the threaded neck (11) such as to be able to remove the dispensing member (2) from the tank (1).

The invention relates to a method for evaluating low-cycle fatigue performance of a welded joint. Evaluation is carried out by adopting a funnel sample, and a working section of the funnel sample is composed of an arc-shaped section and a parallel section; the center of a micro area of the welded joint to be tested is placed in the middle of the arc-shaped section of the funnel sample so that thefatigue sample is broken in the micro-area to be tested, and then low-cycle fatigue performance of the micro-area of the welded joint is evaluated by adopting the local strain of the plastic area obtained through elastic-plastic finite element analysis in strain concentration. Compared with a traditional smooth test sample, the funnel test sample is adopted for testing fatigue performance of the welded micro-area, the fatigue test sample can be finally broken in the welded joint micro-area needing to be measured, and the tested fatigue performance is the fatigue performance of the welded micro-area instead of fatigue performance of the lowest-strength area in the joint. For low-cycle fatigue, the plastic zone strain is used as local strain to evaluate low-cycle fatigue performance of the funnel sample, which is more reliable than hot spot strain and dangerous section strain evaluation, and the method is simpler and more convenient than a critical distance method for calculation.

The invention discloses a dual-motor transverse gear-shiftable electric drive axle speed reducer assembly which comprises two motors, two gear-shifting assemblies, a planetary reduction gear assemblyand a differential mechanism assembly. The gear-shifting assemblies include a first shaft assembly and a second shaft assembly. The motors are connected with the first shaft assembly. High-speed and low-speed two-gear speed regulation is realized through a sliding meshing assembly on the first shaft assembly. The second shaft assembly is in transmission with a sun wheel axle of the planetary reduction gear assembly through a long meshing gear set. A planet carrier of the planetary reduction gear assembly is connected with a differential mechanism inner shell of the differential mechanism assembly through a planet pinion shaft. A gear ring is connected with a differential mechanism shell. The dual-motor transverse gear-shiftable electric drive axle speed reducer assembly is compact in structure, high in integrity, low in machining difficulty and light in weight.

The invention provides a jaw crusher toggle plate. The jaw crusher toggle plate comprises a toggle plate body (2) and wear-resisting bodies (1) at the two sides of the toggle plate body (2), wherein the two sides of the toggle plate body (2) are provided with steps, and the wear-resisting bodies (1) are provided with steps (5) matched with the toggle plate body steps (7). The jaw crusher toggle plate disclosed by the invention has the technical effects that firstly, the two ends of the toggle plate body are provided with the wear-resisting bodies, so that the abrasion between the toggle plate body and a toggle plate cushion is alleviated, the service life of the toggle plate is prolonged for 7-8 times and the utilization rate of materials is greatly improved; secondly, the toggle plate body adopts a casting to guarantee that a jaw crusher cracks when non-crushed materials fall into a machine or a machine is seriously overloaded so as to protect a movable jaw and a rack and achieve a safety effect, and the toggle plate body is convenient to replace; and thirdly, one ends of the wear-resisting bodies are circular-arc-shaped, and good rolling abrasion can be formed between the toggle plate and the toggle plate cushion to alleviate the impact on the toggle plate, so that the equipment can be reliably operated for a long period and the use and maintenance costs of the equipment are reduced.

Automatic bagging and packaging equipment for paper cup production comprises a processing cylinder, the processing cylinder comprises an upper cylinder body, an edge sealing box and a lower cylinder body which are sequentially arranged from top to bottom, an inner clamping plate is used for attaching and pressing a film covering belt to the inner wall of the upper cylinder body, and the film covering belt comprises side edge strips and a packaging bag body; a plurality of packaging bag bodies are arranged in the area between the two side edge strips in a linear array mode, each packaging bag body comprises a main film body, and the two side edge areas of each main film body are heat sealing edges. The main film body entering the upper barrel body is adjusted to be U-shaped by the inner clamping plate; the U-shaped packaging bag main body comprises a first side part surface, a bottom surface and a second side part surface; according to the paper cup packaging machine, side edge heat sealing and opening heat sealing can be achieved through the first heat sealing assembly and the second heat sealing assembly, in this way, comprehensive packaging of stacked paper cups is achieved, and after packaging is completed, the discharging assembly can discharge the packaged paper cups; therefore, the production process is optimized, packaging can be realized in the stacking process, and the processing efficiency is higher.

The invention discloses a method for evaluating plastic pipe butt-fusion welding quality. The method comprises S1, preparing a group of strip-shaped tensile samples, wherein the strip-shaped tensile sample has a butt-fusion welding line as a center line and forms symmetrical concave gaps at two sides of the center line, S2, drawing the strip-shaped tensile samples at a high rate of 1-20m/s and detecting tensile strength values and curves and S3, according to the tensile strength values of the strip-shaped tensile samples, calculating a variable coefficient of the tensile strength values, wherein if the variable coefficient is less than 0.15, the plastic pipe butt-fusion welding quality is eligible. Through a high-speed drawing technology, the method shortens test time. Through the variable coefficient of the tensile strength values, plastic pipe butt-fusion welding quality is determined. The method can produce an objective determination result, reduce subjective factor-caused influence and improve determination reliability.

The invention provides a light-emitting device, having a substrate including a control circuit, wherein the light-emitting device includes a light-emitting element, and the light-emitting element hasa semiconductor layer sequence that includes a first type semiconductor layer, a second type semiconductor layer and an active light-emitting layer between the first type semiconductor layer and the second type semiconductor layer; the light-emitting device has a sacrificial structure, the light-emitting element is connected to the control circuit of the substrate, the light-emitting element has adopted or will adopt a process of laser stripping substrate, and the sacrificial structure prevents the light-emitting element from being damaged caused by too large peeling impact force when the substrate is being peeled off.

The invention provides an injection mold material cutting mechanism which comprises a fixed mold block, a large sliding block is arranged on the fixed mold block in a sliding mode, an ejector plate is arranged below the fixed mold block, an ejector rod used for driving the large sliding block to slide is arranged on the ejector plate, a small sliding block is arranged on the large sliding block in a sliding mode, and a feeding runner communicated to a mold cavity is arranged on the small sliding block. A driving cylinder used for driving the small sliding block to be separated from the large sliding block is arranged on the fixed mold block, so that material cutting of a material head in the feeding runner and a product in the mold cavity is achieved; the ejector plate is further provided with an ejector rod and a driving assembly in a sliding mode, wherein the driving assembly is used for driving the ejector rod to eject and drive the stub bar to be separated from the feeding runner. According to the material cutting mechanism of the injection mold, rapid separation of an injection product and a material head can be achieved, the separated material head can be effectively separated from the runner, and the demolding efficiency is improved.