33results about How to "Meet the needs of the domestic market" patented technology

The invention discloses an in-line common rail fuel feed pump capable of controlling low-pressure fuel inlet amount. The in-line common rail fuel feed pump capable of controlling low-pressure fuel inlet amount comprises a pump body connected with a fuel delivery pump and a plurality of common rail unit pumps which are abreast arranged on the pump body, wherein a driving cam for driving the common rail unit pumps to work is arranged in the pump body, the axis of the driving cam is perpendicular to the axis of the plurality of common rail unit pumps, a cam position sensor for monitoring the phase of the driving cam is arranged at the side part of the pump body, the cam position sensor is connected with an ECU (Electronic Control Unit) in a signaling manner, and a lubricating oil joint, a fuel pipe joint and a fuel inlet joint are arranged on the side wall of the pump body. The in-line common rail fuel feed pump capable of controlling low-pressure fuel inlet amount has the advantages that an electronic proportional valve is not needed to control low-pressure fuel inlet amount, the low-pressure fuel inlet amount is controlled through electromagnet parts of the plurality of common rail unit pumps, the structure of the electromagnet parts is simple, the reliability and durability are high, the cost is relatively lower, the in-line common rail fuel feed pump can be produced at home and does not need to depend on import, and the domestic market demands can be satisfied.

The invention discloses a stone slab surface profile size measurement device and a measurement method thereof, and relates to a measurement device for building stone and a measurement method thereof. The measurement device comprises hardware parts and software parts in which an image pickup system, a camera control system and a mechanical movement and supporting mechanism are arranged; and the hardware part comprises a stone slab workbench, a camera supporting post, a camera transverse movement and vertical movement guide rail and a camera transverse movement and vertical movement driving servo motor. The method comprises the following steps of: putting the stone slab on the workbench, adjusting the height and the central position of the camera, shooting the stone slab, transmitting the image into a computer and performing image processing on the image through a Visual Studio (VC) ++ software to obtain the appearance and the edge profile of the stone slab so as to compute the size of the slab. The invention realizes the online measurement of the stone slab, can facilitate the scientific management of the slab for a factory, simplify the production step, save the time, improve the utilization rate of raw materials, improve the quality, and reduce the cost.

The invention discloses a device for extraction and refinement of N2O from petrochemical industrial tail gas. The device includes a chemical purification apparatus, a compression cooling apparatus, a physical purification apparatus, a gas separation apparatus and a product collection apparatus that are sequentially connected through a pipeline. The compression cooling apparatus comprises a compressor and a water cooler, the physical purification apparatus is a molecular sieve purifier, the gas separation apparatus comprises a heat exchanger, a throttle valve, a fractionating tower and an expansion machine, and the gas collection apparatus is a gas reservoir. In addition, the invention provides a method for extraction and refinement of N2O by the device. The raw material gas is subjected to chemical purification, dedusting and dewatering, compression cooling, physical purification and low temperature rectification so as to obtain the N2O product. The method and device provided by the invention have the advantages of energy saving and emission reduction, lower cost than traditional N2O preparation technology, high productivity, and greatly enhanced safety factor, unique process, and strong operability. Also, the prepared N2O product has high purity, and can meet the market demand and be exported abroad.

A full-synthetic metal cutting liquid comprises the following components in percentage by weight: 18-20% of an extreme-pressure lubricant, 6-7% of an antirusting agent, 0.1-0.5% of a defoaming agent, 0.5-1% of a bactericide and the balance of deionized water, wherein the extreme-pressure lubricant comprises 5.1-5.7% of boric acid, 8.6-9.2% of diethanol amine and 4.3-5.1% of thiourea, and the antirusting agent comprises 2.1-2.3% of triethanolamine, 1.9-2% of sodium tetraborate and 1.7-1.9% of sodium gluconate. A method for preparing the metal cutting liquid comprises the following steps: (1) synthetizing organic boric acid ester; (2) synthetizing the extreme-pressure lubricant; (3) preparing the antirusting agent; (4) preparing the full-synthetic metal cutting liquid. Proven by the results, the prepared metal cutting liquid is transparent and stable, is high in extrusion resistance, wear resistance and rust resistance, can be used for processing various materials such as aluminium alloy, cast iron, carbon steel and copper, is equal to foreign similar high-grade products in performance indexes, and achieves the effects of environmental protection, energy conservation and consumption reduction.

The invention discloses a multifunctional waveguide aerator, which comprises an air path system and an electric circuit board that are arranged in an external shell. The air path system comprises an air compressing and filtering device, an air drying device, an air conveying device and an electromagnetic valve; an electronic steering switch, a signal generator, a pressure sensor, a signal amplifier, a dual-limit comparer and a controller are arranged on the electronic circuit board, wherein the pressure sensor is used for detecting the pressure of air conveyed by the air conveying device; and the air path system also comprises an environment condition detection unit, an alarm unit and an intelligent analysis unit, wherein the intelligent analysis unit is used for carrying out comprehensive analysis on signals detected by the environment condition detection unit and the pressure sensor and adjusting pressure upper-limit and lower-limit control parameters of the controller according to the analysis result. The multifunctional waveguide aerator has the advantages of reasonable structure and design, stable working performance, safety, reliability, high intelligence degree, simpleness and convenience for operation and automatic pressure limiting function and can be used for effectively overcoming multiple defects of the traditional waveguide aerator.

The present invention relates to a method of manufacturing a circular titanium clad copper bar whose diameter is less than 20mm. The method includes eight major steps: blank preparation, pipe lining, coating, heating treatment, drawing, finishing, test and packing and delivery of finished product. A small titanium clad copper bar manufactured by the method has solid titanium clad copper layer andeven titanium clad copper section. Localization of the small titanium clad copper bar can be realized soon by making use of existing equipment, thereby supplementing first category product for Chinese standards, which not only meets the need of domestic market but also creates significant economic benefits.

The present invention relates to a production process of protease, which comprises the following steps: 1) Seed cultivation: insert Bacillus licheniformis into slant culture medium and cultivate at 30-37°C for 24-30h under aerobic conditions, and then culture Put the good slant strains into the seed culture medium, and cultivate them on a constant temperature shaker at 30-37°C for 32-37h; then put the cultured strains into the primary seed culture and cultivate them at 31-38°C for 9.5-13h; 2) Fermentation: Insert the cultured primary seeds into fermentation culture based on 32-38°C for 31-35h; 3) Extract protease: transfer the cultured fermentation broth into a recovery tank and add diatomaceous earth and perlite to it, stir Uniform, obtained after solid-liquid separation, ultrafiltration membrane ultrafiltration treatment and spray drying. The yield of the process is high, and the quality of the obtained protease is good.