47results about How to "Flexible preparation" patented technology

The invention relates to a double membrane slow release fertilizer containing humic acid and a preparation method thereof. The double membrane slow release fertilizer consists of a fertilizer core, a first envelope and a second envelope and is prepared by the components in parts by weight as follows: 90-98 parts of fertilizer core, 0.5-5 parts of first envelope, 1-5 parts of second envelope and 0.5-2 parts of bonder. According to the double membrane slow release fertilizer containing humic acid, gelatin and humic acid are taken as a membrane material and can be degraded to amino acids and fulvic acid which can be directly absorbed by crops or converted into soil organic matters without damaging soil structure or polluting soil.

The present invention relates to a Card for containing food or beverage ingredients comprising: a substantially planar and rigid base portion, at least two ingredient compartments for storing the ingredients and at least two discharge portions, each discharge portions being linked to one of the compartments and extending along the plane of the base portion, and at least one sealing member provided on the base portion covering the compartments and discharge portions on the base portion side of the card, wherein the card is designed for insertion in a food and beverage preparation device in order to dispense the ingredients from the compartments via the discharge portions. The invention further relates to a food and beverage preparation system, comprising a card according to the invention and a food and beverage preparation device, as well as to a method for preparing food or beverages using the card.

A lock cylinder with a lock cylinder housing is provided. A knob shaft, rotatable by way of a knob, is mounted to rotate on one side or both sides of the lock cylinder. An authorization signal causes at least one electromechanically operating coupling device to connect a lock element to rotate in unison with the knob shaft and in order to operate a lock. The authorization signal is generated by evaluation electronics based on an input or input signal. It is proposed that at least one reading unit with an input unit to record the input and / or a receiving unit to receive the input signal is present, that the reading unit with the input unit and / or receiving unit is arranged in at least one knob and are spatially separated from the evaluation electronics, that the knob is connected electrically and mechanically releasable to the knob shaft, and that the reading unit generates, from the input or input signal, an access signal that can be evaluated by the evaluation electronics.

The invention discloses a method for realizing multi-dimensional overall budget, which belongs to the field of computer application. The method comprises the following steps: defining dimension information, defining a budget model, defining a sample sheet format of a budget sheet, creating and accurately adjusting a sheet display form, carrying out budget planning and the like. Compared with the prior art, the method for realizing multi-dimensional overall budget of the invention is used to integrate the budget statements in different industries and different budget service types, collocate scattered budget systems and extract different dimensions to combine a budget model; and the dimension and display mode of the budget sheet can be freely defined by a user, thereby achieving the goal of flexibly defining and planning the budget sheet and solving the problem of different function requirements for the multi-dimensional overall budget in the budget management informatization. The method has high popularization value.

The invention discloses a transparent reinforced filling mother stock which comprises the following materials in weight percentage: 10 to 25 percent of polythene, 65 to 85 percent of transparent glass powder, 3 to 7 percent of polyethylene wax and 1-3 percent of aluminic acid ester. The polythene is the low-density or linear low-density polythene, and the transparent glass powder is a nonmetal silicate. The transparent reinforced filling mother stock which has a higher addition level can reduce the contractibility of plastics and the deformation caused by contraction; the transparent reinforced filling mother stock can not only reinforce the rigidity of products but also increase the weight of the products. The filling mother stock has good dispersibility and good solubility with polypropylene and polyethylene. Even a great amount of filler stock is added, the products with good outside fineness can still be obtained. The filling mother stock can not only make the products keep good mechanical properties, but also prolong the service life of the products.

The present invention relates to a Card for containing food or beverage ingredients comprising: a substantially planar and rigid base portion, at least two ingredient compartments for storing the ingredients and at least two discharge portions, each discharge portions being linked to one of the compartments and extending along the plane of the base portion, and at least one sealing member provided on the base portion covering the compartments and discharge portions on the base portion side of the card, wherein the card is designed for insertion in a food and beverage preparation device in order to dispense the ingredients from the compartments via the discharge portions. The invention further relates to a food and beverage preparation system, comprising a card according to the invention and a food and beverage preparation device, as well as to a method for preparing food or beverages using the card.

The invention discloses a towing hook additionally arranged at chair side of a bracket-free invisible appliance and manufacturing pincers thereof. The towing hook comprises a towing part and a connecting part, wherein the towing part comprises an outer-side circular cover, an inner-side connecting piece and a stress column; the stress column is connected with the outer-side circular cover and theinner-side connecting piece; a connecting hole is arranged at the centers of the stress column and the inner-side connecting piece; and the connecting part comprises a base and a connecting column which are fixedly connected with each other, and the connecting column is in interference fit with the connecting hole. According to the invention, a doctor can perform necessary adjustment on the bracket-free invisible appliance according to the tooth movement condition of a patient during treatment, and treatment adjustment on an invisible orthodontic patient at the chair side can be realized; damage of a traditional towing hook manufacturing mode to the edge of an appliance to affect the attachment degree of the appliance is avoided, and accessories can be additionally arranged on the premisethat the appliance is protected as much as possible by punching on the bracket-free invisible appliance, so necessary adjustment is provided in time during treatment; and compared with prefabricationof the bracket-free invisible appliance when the bracket-free invisible appliance leaves a factory, additional arrangement of the towing hook provided by the invention enables operation to be more flexible.

The invention relates to a capsule type anti-corrosion device with a pile shoe and an anti-corrosion and construction method using the device, the capsule type anti-corrosion device comprises a cylindrical coating capsule body made of anti-corrosion material, the inner surface and the outer surface of the coating capsule body are uneven surfaces, a supporting bottom is arranged at the lower part in the coating capsule body, the periphery of the supporting bottom is connected with the side wall of the coating capsule body, the hard anti-corrosion pile shoe is arranged in the coating capsule body, which is positioned at the lower end of the supporting bottom, at least one grouting pipe is arranged near to the outer side of the coating capsule body along the axial line direction the coating capsule body, the bottom end of each grouting pipe extends to the place which is near to the bottom end of the coating capsule body, and a low-pressure grouting hole and a plurality of high-pressure grouting holes are respectively arranged at the lower part of each grouting pipe, which is near to the supporting bottom. The invention aims at providing the capsule type anti-corrosion device with the pile shoe, which has reliable long-term anti-corrosion performance in a pile foundation and a composite foundation in a highly corrosive brine formation, and can reduce the expensive maintenance cost of the foundations of buildings and structures in the corrosive formation, and the anti-corrosion and construction method using the device.

A manufacturing method of a helical core for a rotating electrical machine includes: first step forming a yoke portion extending along one direction and tooth portions protruding toward a width direction of the yoke portion from a first side edge of the width direction, with respect to a belt-shaped metal plate extending along the one direction; second step forming a notch at a position between tooth portions of the yoke portion after the first step; and third step processing the belt-shaped metal plate into a helical shape by applying bending to the metal plate so that the belt-shaped metal plate is curved toward the width direction sequentially from a portion where the notch is formed after the second step, and in the third step, a distance between a position where the application of bending starts and the position where the notch is formed is limited to within a predetermined dimension.

The invention relates to a hot rolling plan arrangement method, and belongs to the technical field of metallurgical continuous rolling. The method includes: setting a constraint function, establishing a rolling plan model, solving the rolling plan model, performing programming by employing a computer programming technology, and establishing a continuous casting and rolling production, organization, and management mode. Compared with the prior art, the beneficial effects of the method are that the plan making is flexible, mixed arrangement of different steel kinds, different thicknesses, and different widths can be performed, and crossed rolling is realized; the hot direct rolling rate of hot-rolled slabs is high, the heating time of cold-rolled plates is reduced, and energy is saved; and the function of six-in-one by three machines of the casting billet can be fully achieved, the 215OASP production line realizes tight combination of three processes including steel production, continuous casting, and rolling, and the goal of promoting energy saving and consumption reduction of steel products is achieved.

The invention discloses a biodegradable salt-resistant thickening system and a preparation method and application thereof. A biodegradable polyacrylamide-based polymer is used in the thickening system, the biodegradable polyacrylamide-based polymer comprises a first monomer unit and a second monomer unit, wherein the first monomer is selected from one or more of acrylamide and amino-substituted acrylamide, and the second monomer is selected from one or more of maleic anhydride, vinyl acetate, epsilon-caprolactone, acrylic ester, vinyl acetoacetate, p-vinylaniline and acrylic acid. Compared with an existing fracturing system, the thickening system has good salt tolerance when applied to the fracturing system; the biodegradability is good, and the damage to the surrounding environment and the stratum permeability can be reduced; the viscosity can be formed in a short time during on-site preparation, the operation is simple, and the use is convenient; and flexible preparation of slick water and a linear glue solution can be realized by controlling the dosage, and the advantages of one agent with multiple purposes are achieved.

The invention relates to a high solid content low-viscosity aqueous polyurethane adhesive and a preparing method thereof. The adhesive comprises polyester polyol. Under the effect of a hydrophilic chain extender and a catalyst, polyester polyol reacts with polyisocyanate to form a polyester polyol-polyisocyanate prepolymer, and aqueous polyurethane dispersoid or emulsion is formed by adding sulfamate, deionized water, accessory ingredient and micromolecular chain extender into the prepolymer. Mainly, according to the method, polyester polyol is formed by adopting glycidyl tertiary carboxylic ester monomer and polybasic acid, binary anhydride and monomer containing epoxy groups to aggregate under the effect of accelerant, polymerization inhibitor and antioxidant. By choosing different monomers to aggregate with glycidyl tertiary carboxylic ester monomer or by changing the mass of every monomer component, polyester polyol resin of different molecular weights is obtained, and usage requirements of products in all fields are met. Before aqueous polyurethane emulsifies, solvent does not need to be added to be subjected to dilution. The high solid content low-viscosity aqueous polyurethane adhesive and the preparing method thereof have the advantages of being flexible in preparation, high in adaptability, large in range of application, low in emulsion viscosity, high in content, free of pollution and the like.

The invention belongs to the technical field of polyurethane application and particularly relates to a polyurethane flower arrangement mud material and a preparation method thereof. The polyurethane flower arrangement mud material comprises a component A and a component B. The mass ratio of the component A to the component B is 1: 0.9-1.1, the component A is composed of polyether polyol A, polyether polyol B, polyether polyol C, polyether polyol D, a chemical foaming agent, a catalyst, a foam stabilizer and an additive, and the component B is polymerized diphenylmethane diisocyanate. The polyurethane flower arrangement mud material disclosed by the invention has the advantages of adjustable density and color, high aperture ratio, good water absorption and environment-friendly foaming system, and the prepared flower arrangement mud material can be recycled, so that the damage to the environment is avoided. The preparation method disclosed by the invention is simple and easy to implement, energy-saving and consumption-reducing.

A polymer based photo-detector has photoresponsivity in Ultraviolet, Visible, Near and Mid Infrared regions. The photo-detector comprises a single layer of polyvinyl alcohol (PVA) as a photoactive layer; with no additional buffer layer for accepting Ultraviolet, Visible and Infrared radiation as well as no buffer layer to block charge carrier injection. The PVA layer's photoresponsivity is extended from Ultraviolet to Near Infrared by changing its nano-morphology on a low thermal device structure. The primarily photo-generated charge carriers diffuse through the amorphous part of the polymer layer and split into charge carriers on the electrodes or by the charge traps in the layer. The charge carrier generation is in the picosecond range; thus the exciton and Polaron drift diffusion cause electrical conduction of the polymer layer under Ultraviolet illumination. The low thermal mass of the MEMS based structure reduces localized heating effect due to Infrared radiation, increasing responsivity of the photo-detector.

The invention discloses a universal preparation method of a reduced graphene oxide-based asymmetric composite membrane. The method comprises the following steps: firstly, preparing a graphene oxide-based mixed solution with a certain concentration, and then preparing a layer of graphene oxide-based composite membrane through certain modes such as vacuum filtration, spin coating, drop coating, blade coating, coating and electrospinning; then, preparing another layer of membrane containing different material components on the surface of the graphene oxide-based composite membrane by another solution or mixed solution in a certain manner so as to obtain a graphene oxide-based asymmetric composite membrane; and finally, putting the graphene oxide-based asymmetric membrane into a closed reaction container, and carrying out hydrothermal or solvothermal reaction at a certain temperature to prepare the reduced graphene oxide-based asymmetric composite membrane.

The invention relates to a filter arrangement and a method for producing a filter receptacle. Concretely, the filter receptacle (10) comprises a housing (1) having an inflow opening (3) and an inflow connection pipe (2) fastened, in particular welded, at the inflow opening (3) and used for coupling to a fluid supply line, wherein the inflow connection pipe (2) has a flow cross-section that varies in a flow direction. In the method for producing the filter receptacle (10), the housing (1) is provided, the inflow opening (3) is mounted in the housing (1), and the inflow connection pipe (2) is fixed at the opening (3).

A slope-protection herbaceous plant three-level slow-release blended fertilizer is characterized in that the fertilizer is prepared by mixing a germination-period fertilizer, a developmental-period fertilizer and a growth-period fertilizer, wherein the germination-period fertilizer comprises particles composed of a germination-period fertilizer inorganic fertilizer core body and a germination-period fertilizer hydrogel layer wrapping the germination-period fertilizer inorganic fertilizer core body; the developmental-period fertilizer comprises particles composed of a developmental-period fertilizer inorganic fertilizer core body, and a developmental-period fertilizer chicken manure organic fertilizer layer and a developmental-period fertilizer hydrogel layer which wrap the developmental-period fertilizer inorganic fertilizer core body from the inside to the outside; and the growth-period fertilizer comprises particles composed of a growth-period fertilizer inorganic fertilizer core body, and a growth-period fertilizer chicken manure organic fertilizer layer, a growth-period fertilizer diatomite layer and a growth-period fertilizer hydrogel layer which wrap the growth-period fertilizer inorganic fertilizer core body from the inside to the outside. The slope-protection herbaceous plant three-level slow-release blended fertilizer and a preparation method thereof provided by the invention better ensure that slope-protection herbaceous plants obtain essential fertilizer nutrients in the whole process of growth cycle, healthy growth of the slope-protection herbaceous plants in growth stages is promoted, and the utilization efficiency of the fertilizer is improved.

The invention provides a pressed film type palate lifting prosthesis and a manufacture method thereof. The pressed film type palate lifting prosthesis comprises a denture part, a hard palate part anda soft palate part, wherein the denture part is matched with the appearance of the upper denture of a patient; accessories are manufactured on the second odontoprisis buccal surfaces of the upper jawsof two sides of the patient; the denture part is provided with cavities corresponding to the accessories; the denture part is connected with the front part of the hard palate part; the hard palate part is of a convex upward bulge shape and is matched with the shape of the hard palate part of the oral cavity of the patient; the rear end of the hard palate part is connected with the front end of the soft palate part; and the tail end of the soft palate part is of a convex upward backward bulge shape, is matched with the shape of the soft palate part of the oral cavity of the patient but is higher than a practical soft palate position. When the patient wears the prosthesis, the denture part is sheathed to the upper denture of the patient and is fit to the upper denture, the cavities on two sides contain and coat the accessories, the hard palate part is fit to the hard palate of the oral cavity of the patient, and the soft palate part is fit to the soft palate of the patient and raises the soft palate to be height which should be reached when the throat velum palatinum is normally closed. Through whole-denture undercut retention and accessory auxiliary retention, the prosthesis is firm in retention, teeth are not damaged, and the pressed film type palate lifting prosthesis can be conveniently taken down and worn.

The invention discloses a standard gas preparation device, which comprises a gas distribution cylinder, wherein a piston is arranged in the gas distribution cylinder. A first air inlet of the gas distribution cylinder is connected with a first gas cylinder through a first gas transmission pipe, and a second air inlet of the gas distribution cylinder is connected with a second gas cylinder througha second gas transmission pipe. The first gas transmission pipe and the second gas transmission pipe are respectively provided with a first gas port and a second gas port, and the first gas port and the second gas port are respectively provided with a first gas bag and a second gas bag. A first valve and a second valve are respectively arranged on the first gas transmission pipe on the gas outletside and the gas inlet side of the first air bag, and a third valve is arranged on the first air port. The second gas transmission pipe is provided with a fourth valve and a fifth valve on the air outlet side and the air inlet side of the second gas bag, respectively. The device can not only flexibly prepare a certain volume of standard gas according to the needs, but also ensure that the pressureof the standard gas meets a standard atmospheric pressure.

A manufacturing method of a helical core for a rotating electrical machine includes: first step forming a yoke portion extending along one direction and tooth portions protruding toward a width direction of the yoke portion from a first side edge of the width direction, with respect to a belt-shaped metal plate extending along the one direction; second step forming a notch at a position between tooth portions of the yoke portion after the first step; and third step processing the belt-shaped metal plate into a helical shape by applying bending to the metal plate so that the belt-shaped metal plate is curved toward the width direction sequentially from a portion where the notch is formed after the second step, and in the third step, a distance between a position where the application of bending starts and the position where the notch is formed is limited to within a predetermined dimension.

The invention discloses a backboard used for packaging of a crystalline silicon photovoltaic module. The backboard used for packaging of the crystalline silicon photovoltaic module is used for leading out an electrode crystalline silicon photovoltaic cell from the packaging backboard. The backboard used for packaging of the crystalline silicon photovoltaic module comprises a backboard substrate layer and a connecting circuit layer composed of metallic aluminum instead of metallic copper. According to the backboard used for packaging of the crystalline silicon photovoltaic module, in order to improve the performance of the backboard, an insulation layer can be arranged on the outer layer of the connecting circuit layer, and electrically connected point windows are formed in the insulation layer. The backboard used for packaging of the crystalline silicon photovoltaic module has the advantages that due to the fact that the aluminum connecting circuit is adopted to replace a copper connecting circuit in the prior art, cost of materials is reduced; due to the fact that the substrate of the backboard can be formed with various methods, material combination is more flexible, the manufacturing method can also be more flexible, and the material cost and manufacturing cost of the photovoltaic module backboard are effectively reduced.

The invention relates to a capsule type anti-corrosion device with a pile shoe and an anti-corrosion and construction method using the device, the capsule type anti-corrosion device comprises a cylindrical coating capsule body made of anti-corrosion material, the inner surface and the outer surface of the coating capsule body are uneven surfaces, a supporting bottom is arranged at the lower part in the coating capsule body, the periphery of the supporting bottom is connected with the side wall of the coating capsule body, the hard anti-corrosion pile shoe is arranged in the coating capsule body, which is positioned at the lower end of the supporting bottom, at least one grouting pipe is arranged near to the outer side of the coating capsule body along the axial line direction the coating capsule body, the bottom end of each grouting pipe extends to the place which is near to the bottom end of the coating capsule body, and a low-pressure grouting hole and a plurality of high-pressure grouting holes are respectively arranged at the lower part of each grouting pipe, which is near to the supporting bottom. The invention aims at providing the capsule type anti-corrosion device with the pile shoe, which has reliable long-term anti-corrosion performance in a pile foundation and a composite foundation in a highly corrosive brine formation, and can reduce the expensive maintenance cost of the foundations of buildings and structures in the corrosive formation, and the anti-corrosion and construction method using the device.

The invention provides a three-stage controlled-release bulk blend fertilizer for slope protection plants. The three-stage controlled-release bulk blend fertilizer is characterized in that the fertilizer is prepared by mixing an early-stage fertilizer, a middle-stage fertilizer and a later-stage fertilizer, wherein the early-stage fertilizer is a particle composed of an early-stage fertilizer inorganic fertilizer core and an early-stage fertilizer hydrogel layer coating the early-stage fertilizer inorganic fertilizer core, the middle-stage fertilizer is a particle composed of a middle-stage fertilizer inorganic fertilizer core, and a middle-stage fertilizer chicken manure organic fertilizer layer and a middle-stage fertilizer hydrogel layer successively coating the middle-stage fertilizer inorganic fertilizer core from interior to exterior, and the later-stage fertilizer is a particle composed of a later-stage fertilizer inorganic fertilizer core, and a later-stage fertilizer chicken manure organic fertilizer layer, a later-stage fertilizer diatomite layer and a later-stage fertilizer hydrogel layer successively coating the later-stage fertilizer inorganic fertilizer core from interior to exterior. The three-stage controlled-release bulk blend fertilizer for the slope protection plants and the preparation method thereof in the invention can better guarantee that the plants obtain necessary fertilizer nutrients in the whole course of a growth period, promote healthy growth of the slope protection plants in each growth stage and improve the utilization efficiency of fertilizer.

The invention relates to an interactive video generation method and system, electronic equipment and a storage medium, and belongs to the technical field of mobile terminals. The interactive video generation method comprises the following steps: generating or acquiring a main line video, and entering a branch video creation mode associated with the main line video; shooting or uploading the firstbranch video and the second branch video in the branch video creation mode; and associating the first branch video and the second branch video to the end of the main line video, and providing a branchvideo selection playing mechanism to generate an interactive video. Herein, a new entrance is created at a production end, so that logic conflict with an existing product is avoided. Moreover, the process of compiling the interactive video does not depend on a network, and the branch video can be quickly utilized to generate the interactive video, so that a video producer can compile more interactive videos conveniently. Meanwhile, the producer can flexibly compile the branch video according to the plot, so that more video resources are provided for consumers, and the user experience is improved on the whole.

The invention discloses a manufacturing method of resin optical lens. The manufacturing method of the resin optical lens comprises the following steps: step 1, designing a secondary mold correspondingto optical lens to be manufactured as needed; step 2, manufacturing the secondary mold through 3D printing technology according to the design in the step 1; step 3, grinding, polishing the secondarymold; step 4, pouring liquid state materials to a mold cavity of the secondary mold; step 5, curing the liquid state materials to obtain a soft mold; step 6, pouring liquid state thermosetting resin into a mold cavity of the soft mold; step 7, curing the liquid state thermosetting resin; step 8, opening the soft mold, obtaining the needed resin optical lens; by adopting the manufacturing method ofthe resin optical lens, the manufacturing period of the resin optical lens is enabled to be short, the manufacturing cost is low, and the performance and quality of the lens can be guaranteed.

The invention relates to a piston for a working cylinder, said piston comprising two coaxial piston elements (23a, 23b) which together surround a metallic core and at least partially consist of a plastic material, at least one of said piston elements comprising a radially outwardly arranged annular piston seal (25a, 25b). The two piston elements (23a, 23b) are independently coaxially engaged withthe metallic core (22), from opposite sides, by means of an engaging device (24a, 24b) respectively provided on each element. The entire metallic core (22) is held on the respective piston element (23a, 23b) by means of the two engaging devices (24a, 24b), such that the piston elements (23a, 23b) are axially held together by means of the metallic core (22) as a connection member.

The invention relates to a PLC-based multi-mode collection and distribution control electrolytic cell control system for electrolytic aluminum engineering. The multi-mode distributed control electrolytic cell control system based on PLC is composed of the following structure: PLC is used to receive the signals collected by the remote I / O acquisition module and process them to the anode lifting control module and shell cutting control module ; The I / O acquisition module is used to collect the signal of the electrolytic cell and transmit it to the PLC; the anode lifting control module is used to receive the control signal of the PLC; the shelling and cutting control module is used to receive the control signal of the PLC. Advantages and effects of the present invention: one PLC can control multiple electrolyzers, a remote I / O acquisition module is set on each electrolyzer, and the remote I / O communicates with the PLC data through a communication cable, so that both the electrolyzer and the electrolyzer can be reduced. A large number of cable connections between slot control machines improve control reliability.

The application discloses a preparation method and application of low-protein probiotic fermented feed, relates to the technical field of fermented feed and low-protein daily ration, and comprises the following steps: S1, preparing a low-protein fermented base material, wherein the low-protein fermented base material comprises, in mass parts, 45-70 parts of cereal raw materials, 6-22 parts of plant protein by-products, 8-28 parts of bran fiber raw materials, 1-6 parts of fermentable sugar sources, 0.2-2.0 parts of mineral buffer components and 0.15-2.50 parts of amino acid balancing components, and the crude protein content of the low-protein fermented base material is controlled to be 10.0-16.5 wt% on a dry basis; and S2, performing steam conditioning or wet heat curing treatment on the low-protein fermented base material after being crushed and mixed to obtain a pretreated base material. Through the combination of the low-protein base material design and the amino acid balancing components, the crude protein content of the product is stably controlled to be 10.0-16.5 wt%, and meanwhile, the limiting amino acids such as lysine, methionine, threonine, tryptophan, valine and isoleucine are supplemented, so that the problem of amino acid mode imbalance caused by the reduction of protein raw materials is avoided.

The invention discloses a standard gas preparation device, which comprises a gas distributing bottle, and a piston is arranged in the gas distributing bottle. The first air inlet of the gas distribution bottle is connected with the first gas cylinder through the first gas delivery pipe, and the second air inlet of the gas distribution bottle is connected with the second gas cylinder through the second gas delivery pipe. The first air delivery pipe and the second air delivery pipe are respectively provided with a first air port and a second air port, and the first air port and the second air port are respectively provided with a first air bag and a second air bag. A first valve and a second valve are respectively provided on the first air delivery pipe on the air outlet side and the air inlet side of the first air bag, and a third valve is arranged on the first air port. A fourth valve and a fifth valve are respectively provided on the second air delivery pipe on the air outlet side and the air inlet side of the second air bag. The device can not only flexibly prepare a certain volume of standard gas according to needs, but also ensure that the pressure of the standard gas satisfies a standard atmospheric pressure.