42results about How to "Wide range of application conditions" patented technology

The invention provides an application of a carboxylic acid metal salt of tetrahydrophthalic anhydride as a nucleating agent for a polypropylene beta crystal form. By adopting the carboxylic acid metal salt of tetrahydrophthalic anhydride as the nucleating agent, the generation of beta crystal form polypropylene can be induced efficiently; as tested by differential scanning calorimetry (DSC), the content of a beta crystal form is up to 86-97.7 percent; after nucleation modification by using the carboxylic acid metal salt of the tetrahydrophthalic anhydride, the punching strength of polypropylene is increased by 5-8 times, the heat deflection temperature is increased greatly, and high mechanical property is achieved; and moreover, the carboxylic acid metal salt has the advantages of chemical stability, high dispersity, coloring resistance, capability of improving the working quality of a product and wide application range in the field of materials special for polypropylene.

The invention discloses a winnowing machine and a winnowing method thereof and belongs to the field of crop seed impurity removal machinery. The winnowing machine comprises a draught fan and an impurity collection box and further comprises a winnowing component, a feeding hopper and a discharging hopper, wherein the winnowing component is arranged below the feeding hopper; the discharging hopper is located below the winnowing component; the draught fan is located at the left side of the winnowing component; and the impurity collection box is located at the right side of the winnowing component. The winnowing machine further comprises flying dust adsorption equipment. The flying dust adsorption equipment comprises an upper air opening, a flying dust filter bag and a flying dust collection hopper in sequence from top to bottom. The impurity collection box comprises filter plates, a heavy impurity hopper, a light impurity hopper and a flying dust outlet. The winnowing component is arranged at the left side of the upper portion of the impurity collection box. The upper portion of the impurity collection box is formed by combining the filter plates. The heavy impurity hopper and the light impurity hopper are arranged on the lower portion of the impurity collection box in sequence from left to right. The flying dust outlet is formed in the right side of the upper portion of the impurity collection box. The flying dust outlet communicates with the flying dust adsorption equipment. By means of the winnowing machine, impurities in grains can be removed; mildewed or imperfect seeds are separated from good seeds which are plump in grain; and the seeds can be stored conveniently and sold and processed conveniently at the later stage.

The invention provides a piston sealing structure, and particularly relates to a piston sealing structure for a hydraulic cylinder. The piston sealing structure is mainly used for the sealing between a piston and a cylinder barrel. The piston sealing structure comprises the piston, the cylinder barrel and a sealing groove, wherein the piston in sliding fit with the cylinder barrel is mounted on a piston rod, and sealing is formed between a sealing element on the piston and the cylinder barrel. A sealing device is composed of a supporting ring, a dirt containing ring, a Gely ring, a dirt containing ring and a supporting ring, starting force is small, guide length is increased, large eccentric loads can be borne, and machining of the matched groove meets the domestic manufacturing technological level better. The sealing structure is simple, low in cost, good in seating effect, capable of bearing the large eccentric loads and wide in application working condition.

The invention discloses a power generation and energy-saving system and method based on coupling and induction and belongs to the technical field of power generation circuits. The power generation andenergy-saving system based on coupling and induction comprises a first winding coil, a second winding coil, a diode, a triode, a rectifier bridge and a rechargeable battery; the first winding coil and the second winding coil adopt a double-wire parallel winding mode; the upper end of the first winding coil is connected with the positive pole of a power source; the lower end of the first winding coil is connected with the collector of the triode; the emitter of the triode is connected with the negative pole of the power source; the positive pole of the diode is connected in parallel with the lower end of the winding coil; the negative pole of the diode is connected with the positive pole of the power source; two ends of the second winding coil are connected with the alternating-current input end of the rectifier bridge; and the direct-current output end of the rectifier bridge is connected with the rechargeable battery. The system can be applied to all equipment with winding coils inside which have power-on and power-off functions; the system is especially suitable for the field of motors; the application conditions of the system are extensive; and the energy-saving effect of the system is obvious.

The invention discloses a bullet support and bullet head separating device. The bullet support and bullet head separating device comprises a launching tube fastener detachably connected to a launching tube, and a bullet support separating piece detachably connected to the launching tube fastener. The bullet support separating piece separates a bullet support and a bullet head of a test bullet shot out of the tube, and meanwhile the bullet head is allowed to leave the bullet support separating piece. The bullet support and bullet head separating device is simple in structure, convenient to install, easy to carry and suitable for test bullets of various sizes.

The invention discloses a preparation method for an absorbent for smoke decarburization. The preparation method comprises the following steps: using a boron nitride nano-sheet/montmorillonoid intercalation composite material, preparing a polysiloxane crosslinking compound on the surface of the composite material, and uniformly mixing with fluorite powder, calcium carbonate, sodium silicate and silicon nitride, die-filling, degassing, and compression-forming, drying an obtained rough body and placing in a muffle furnace for sintering, to obtain a porous carrier; adding ethyl succinate to diethyl carbonate, stirring and uniformly mixing, to obtain mixed solution B; adding the prepared porous carrier to the mixed solution B, soaking for 15 h, centrifugally removing the unadsorbed mixed solution after soaking, and finally drying the porous carrier adsorbed with the mixed solution, to obtain the compound absorbent. The prepared absorbent by the method has the large absorptive capacity, and is capable of effectively removing carbon dioxide in the smoke.