33results about How to "Appropriate quantity" patented technology

The invention discloses a gas plasma sulfurizing process, which belongs to the technical field of surface heat treatment. In the process, a steel workpiece is placed in a sealed sulfurizing furnace with direct-current high voltage and high vacuum, then an appropriate amount of carrier gasses such as hydrogen gas, argon gas, ammonia gas and the like, and hydrogen sulfide are introduced into the furnace to form a sulfurizing atmosphere. Those gases are split into plasma states of nitrogen, hydrogen, argon and sulfur after entering the sulfurizing furnace and dash against the surface of the steel workpiece positioned on a negative plate to ensure that the temperature of the workpiece is raised, wherein sulfur ions infiltrate into the surface of a component to form ferrous sulfide which covers the whole surface of the component to fulfill the aim of sulfurizing. The process has the advantages of no pollution, low cost and high sulfurizing quality, overcomes the defects of serious pollution and high cost of the conventional electrolytic sulfurizing, and also overcomes the defect of low quality of plasma sulfurizing performed by using solid sulfur on the market at present. Through sulfurizing treatment, the mechanical life of a mechanical workpiece can be improved by 2 to 3 times, and the process has obvious economical and social benefits and extensive development prospect when applied to an automobiles, a train, a wind-driven generators, a petroleum machinery and a rolling machine.

The present invention concerns an injection-molded capsule for use in a food preparation machine, said capsule for use in a food preparation machine comprising: (i) a structure (1) with a lower side (2), at least three pillars (3) extending from the lower side and linked to a circular upper frame (4) which defines the surroundings of the capsule top side, the pillars (3) having cross-sections S1, S2 and S3, the lower side (2) being a solid wall that comprises a dispensing opening (5) and is centered across the vertical symmetry axis VSA of said capsule, and (ii) a label (6) attached to the outer surface of the lower side (2), pillars (3) and upper circular frame (4), thus forming an envelope that defines capsule side walls, characterized in that the injection point IP of the capsule is off-centered in the vicinity of said dispensing opening (5), opposed the pillar (3) having a cross-section S3 relatively to the axis VSA, and in that S1=S2 and S3>S1.

A method for feeding farmed fish by using au automatic feeder (20), which supplies a feed to the farmed fish in accordance with a preset feeding schedule, and a feed-demand sensor (22), which detects a demand for the feed by the farmed fish, characterized in that the feed-supply by the automatic feeder (20) is controlled on the basis of the detection results from the feed-demand sensor (22).

A method and device for applying germicide solutions to a cattle teat or other item in a way that reduces the amount of waste that typically accompanies this process. The present invention provides a method for cleaning a teat which comprises the steps of dipping a teat into a quantity of a preselected germicidal solution so as to coat that teat, wiping excess material from that teat, collecting the removed excess material from the teat. The present invention also provides an improved germicide applicator for use in the invented method.

A starting device for feeding a quantity of fuel from the fixed-quantity fuel chamber to an intake passage during start-up having a manually operated primary pump for suctioning / pumping fuel and arranged on a fuel introduction path connected along a fuel-feeding path; and a fixed-quantity fuel chamber for temporarily storing fuel delivered from the primary pump. An internal wall of the fixed-quantity fuel chamber undergoes elastic displacement, allowing its internal capacity to expand / shrink within a predetermined range; the fixed-quantity fuel chamber is connected to a fuel delivery path that communicates with the intake passage side and has a manually operated open / close valve; the valve is opened in a state in which, due to the primary pump being operated, the fixed-quantity fuel chamber is filled with a predetermined quantity of fuel while enlarging its internal capacity, whereby it shrinks due to an elastic contraction force and the fuel.

The invention discloses a semi-high speed steel copper soldering inlaid steel cutting blade and a manufacturing method thereof, which belong to the field of mechanical blades. The cutting blade is manufactured by welding a semi-high speed shear steel on a cutter body through copper soldering, wherein the semi-high speed shear steel comprises the following chemical elements by weight percent: 0.56-0.65% of C, 0.40-0.60% of Si, 0.25-0.40% of Mn, 6.0-6.8% of Cr, 1.6-2.5% of W, 4.2-5.2% of Mo, 0.7-0.9% of V, 0.1-0.2% of Nb, 0.3-0.4% of one of Co or Ni, no more than 0.02% of S, no more than 0.025% of P and the balance of Fe. The method for preparing comprises: smelting the semi-high speed shear steel, carrying out forging rolling at 870 DEG C-1080 DEG C, and then annealing; secondarily, heating to 1160 DEG C-1180 DEG C, carrying out copper soldering to inlay steel, and quenching at the same time; and finally, tempering. The cutting blade has the same hardness as the original high speed steel copper soldering inlaid steel cutting blade, but has higher sharpness, and is easy for cutter sharpening, and the material cost and the technological cost are lowered.

The invention relates to a method for cultivating crops, in particular to a method for cultivating potatoes. The invention includes methods such as soil preparation, base fertilizer application, seed potato treatment, ridging and sowing, field management and the like, and the potato can be cultivated through the cultivation method of the invention, which can effectively increase yield.

A centrifugal separator for cleaning crankcase gas, containing oil, from an internal combustion engine, includes a stationary casing defining a separation space and including a first end portion, an opposite second end portion and an inner wall surface facing the separation space. The separator also includes an inlet channel for the gas to be cleaned, a gas outlet channel for the cleaned gas and an oil outlet for the separated the oil. A centrifuge rotor is provided in the separation space and includes a spindle and a plurality of separation discs carried by the spindle. The centrifuge rotor is rotated to create a rotating gas volume. An oil supply device supplies such a quantity of oil to the separation space that a flowing oil film is created on the inner wall surface during operation of the centrifugal separator.

The invention discloses a semi-high-speed steel. The semi-high-speed steel is prepared from the following chemical elements in percentage by weight: 0.58-0.62% of C, 0.48-0.52% of Si, 0.28-0.38% of Mn, 6.12-6.60% of Cr, 1.82-2.28% of W, 4.45-4.94% of Mo, 0.76-0.81% of V, 0.13-0.16% of Nb, 0.32-0.38% of Co or Ni, S which is less than or equal to 0.02%, P which is less than or equal to 0.025%, and the balance being Fe. According to the semi-high-speed steel disclosed by the invention, the hardness of a paper cutting blade made from the semi-high-speed steel is the same as that of an original copper-brazed steel-inlaid paper cutting blade made from high-speed steel, but the sharp degree of the paper cutting blade made from the semi-high-speed steel is higher, the paper cutting blade made from the semi-high-speed steel is easy to sharpen, and the material cost and the technology cost are reduced.

The invention discloses a decision-making method for the construction of urban public service facilities that affects population density. The urban space is divided into square geographic grid units with the same side length. On the basis of the urban population spatial distribution data, all types of interest point densities, different The density of interest points of functional type and the mixing degree of functional types of interest points are three parameter indicators that reflect the current development level of urban public service facilities, and a linear regression analysis between different indicators is carried out; the parameter indicators that pass the regression model test are further quantified Regression analysis, constructing the correlation and influence process between the population distribution data in the geographic grid unit and the public service facility indicators, and comprehensively judging the impact of public service facilities on regions with different population development stages. This method accurately reflects the types of public service facilities that should be prioritized in cities at different levels of population development, so as to improve the efficiency of population density and optimize the use efficiency of public service facilities.

A starting device for feeding a quantity of fuel from the fixed-quantity fuel chamber to an intake passage during start-up having a manually operated primary pump for suctioning / pumping fuel and arranged on a fuel introduction path connected along a fuel-feeding path; and a fixed-quantity fuel chamber for temporarily storing fuel delivered from the primary pump. An internal wall of the fixed-quantity fuel chamber undergoes elastic displacement, allowing its internal capacity to expand / shrink within a predetermined range; the fixed-quantity fuel chamber is connected to a fuel delivery path that communicates with the intake passage side and has a manually operated open / close valve; the valve is opened in a state in which, due to the primary pump being operated, the fixed-quantity fuel chamber is filled with a predetermined quantity of fuel while enlarging its internal capacity, whereby it shrinks due to an elastic contraction force and the fuel.

The invention discloses a method for breeding chamomile. The method disclosed by the invention comprises the following steps: (1) inoculating chamomile seeds onto a seed germination culture medium to carry out sterile seedling cultivation so as to produce sterile seedlings; (2) taking hypocotyls of the sterile seedlings as explants, inoculating the explants onto a callus induction culture medium to carry out callus induction culture so as to generate calluses by virtue of induction; (3) inoculating the calluses generated by induction onto an adventitious bud differentiation culture medium to carry out adventitious bud induction differentiation culture so as to obtain adventitious buds; (4) inoculating the adventitious buds onto a rooting culture medium to carry out rooting culture and culturing adventitious roots by virtue of induction so as to obtain rooted seedlings; and (5) hardening and transplanting the rooted seedlings so as to finally obtain the chamomile. In a regeneration system established by the method disclosed by the invention, callus inductivity reaches up to 86.63%, differentiation rate of the adventitious buds reaches up to 25.5%, rooting rate reaches up to 100%, and transplanting survival rate reaches up to 100%, thus a large number of excellent chamomile test-tube plantlets can be obtained in short term so as to realize large-scale factory production.

The invention discloses a rapid breeding method of senecio cruentus, belonging to the cultivation field of plant tissues. The method comprises the following steps of: (1) serving senecio cruentus seeds as explants; (2) cultivating cluster buds by induction; (3) cultivating strong seedlings; (4) cultivating calluses by induction; (5) cultivating the calluses by enrichment; (6) cultivating adventitious buds by differentiation; (7) cultivating adventitious roots by induction; and (8) hardening and transplanting seedlings, wherein a minimal medium adopted in each cultivation stage is an MS medium, and a growth regulating agent added in each cultivation stage is selected with optimum dosage and proportioning ratio after being tested by a orthogonal design. The senecio cruentus bred by the method has the advantages of strongly grown test-tube seedlings, high breeding coefficient and scale and industrial production, the average induced rooting rate reaches 94.68%, and the survival rate of transplantation reaches 100%.

A water purifier determining an appropriate discarded water quantity includes: a purified water supply; an integrated flow quantity measuring part; and a control and calculation part. The control and calculation part is configured to determine whether purified water is unsuitable for use based upon the integrated flow quantity measured for a period of time from when the supply is started. A value of water quantity Qti at the Nth time is determined based on a length of time from when the purified water supply stops the supply at the (N−1)th time up to when the purified water supply starts the supply at the the Nth time; and a difference between a quantity of water measured for a period of time from when the supply at the (N−1)th time is started to when the supply at the (N−1)th time is stopped and a value of Qti at the (N−1)th time.

The invention relates to the technical field of soldering materials and particularly discloses a height-limited type solder preform. The height-limited type solder preform comprises a solder preform matrix and metal wires. The solder preform matrix is in a cuboid shape. One length*width surface of the solder preform matrix is provided with at least two grooves parallel to the width edge of the surface. The length of each groove is equal to that of the width edge of the surface. The depth of each groove is smaller than that of the solder preform. The dimensions of each metal wire are equal to that of each groove, and each metal wire can be just embedded into the corresponding groove to be fixed. The melting point of each metal wire is 300 DEG C or above higher than that of the solder preform matrix. The preparation process of the height-limited type solder preform is simple and easy to operate. The height-limited type solder preform is low in cost, stable in soldering thickness, high in uniformity, low in voidage, and particularly suitable for high-reliability soldering having a certain requirement for the height of a solder layer in the process of electronic packaging.