38results about How to "Help mix" patented technology

The invention relates to a compound protein powder for preventing postmenopausal women from osteoporosis. The components and weight percentage thereof are: 55 percent to 80 percent of soybean protein powder; 15 percent to 35 percent of whey powder, 0.2 percent to 0.8 percent of soybean isoflavone, 1 percent to 5 percent of oligosaccharide, 1.2 percent to 2.4 percent of calcium lactate, 0.5 percent to 1 percent of stabilizer and 0.5 percent to 1.5 percent of lecithin. The product of the invention is safe and reliable to eat, which has good effect, innocuity, no side effects and dependence. Furthermore, the invention can protect the health of middle-aged women by eating often, especially for improving the healthy problems caused by lacking of estrogen, so as to improve the life quality and living quality of women. Therefore, the invention can be taken as a protein complementary product to be eaten frequently by women.

A package has a transport / storage state for storing powdery material which is to be mixed with a solvent to form a medical solution, e.g. for use in dialysis treatment. The package comprises a compartment (6) which is at least partially defined by two opposing wall portions, and a connector (10). In the transport / storage state, the compartment contains the powdery material in the form of at least two distinct sets (2A-2D) of powdery material of different compositions, where the opposing wall portions are brought into engagement with the powdery material so as to immobilize the sets of powdery material (2A-2D). When used for preparation of the medical solution, a fluid is selectively admitted into the package via the connector (10) so as to expand the compartment (6) and enable mixing of the sets (2A-2D) of powdery material with the solvent in the compartment (6).

The invention discloses a preparation device of a chiral o-diamine compound and a mixing method of the preparation device. The preparation device comprises a box body and a plurality of supporting legs which are distributed at the lower end of the box body in an array mode; the lower end of each supporting leg is provided with a supporting block used for increasing the supporting area; the lower end of the box body is provided with a discharging pipe used for discharging; the upper end of the box body is provided with a feeding pipe; a feeding hopper is arranged at the upper end of the feeding pipe; a driving motor is arranged in the middle of the upper end of the box body; the output end of the driving motor is fixedly connected with the upper end of a driving shaft; and the lower end of the driving shaft is connected with a buffering pool used for buffering materials. The preparation device of the chiral o-diamine compound and the mixing method are designed for overcoming the defects of existing processing equipment, and optimization is made from the aspect of feeding, so that material spreading is more uniform, and later mixing is facilitated; and in addition, a stirring mode is optimized, longitudinal convection type stirring, circumferential rotary stirring and extrusion expansion convection are constructed, a stirring effect is further optimized, and practicability is high.

A frozen carbonated beverage apparatus includes a freezing cylinder that stores and freezes a low Brix frozen carbonated beverage. A beater including a helical member is moveable about an axis, and a stationary baffle is received within the beater. As the beater rotates, a scraper blade scrapes against the wall of the freezing cylinder to remove any frozen product from the wall. The helical member moves the frozen product within the freezing cylinder. The baffle prevents the mass of the product from collecting in the center of the helical beater and just rotating with the beater, assisting the blending of the frozen carbonated beverage and increasing the quality of the final product.

The invention provides a denitrification system and a denitrification method for a gas turbine. The denitrification system comprises the gas turbine and a reducing agent supplying system. A denitrification reducing agent is provided for a turbine by using a reducing agent output pipeline communicated to the rear part of a first-stage moving blade of the turbine of the gas turbine; nitric oxide influe gas, exhausted from a combustion chamber of the gas turbine, is contact with the denitrification reducing agent in the turbine of the gas turbine to carry out selective non-catalytic reduction reaction, and denitrification of the flue gas is finished, wherein before the reducing agent enters the turbine for reacting, more free radicals can be generated by plasma treatment and facilitate a denitrification reaction. By using the technical scheme provided by the invention, denitrification is realized in the turbine of the gas turbine, and high pressure and high rotating speed of the turbineof the gas turbine are sufficiently utilized, so that the mixing of the reducing agent and the flue gas is benefited, the denitrification reaction is promoted, and the denitrification efficiency is improved; besides, post treatment equipment also can be reduced, so that the complexity of the system and investment expenses of equipment are reduced.

The invention relates to a mixture formation device for an internal combustion engine operated with a burnable gas, preferably compressed natural gas CNG. The mixture formation device comprises a combination of a quantity regulator, a gas mixer, a flow-guiding element for pressure recovery, and a connection possibility for exhaust gas recirculation of the internal combustion engine. The mixture formation device according to the invention can empty a gas tank to a comparatively low pressure of about 2 bar, an excellent mixture formation being achieved over the entire range of speed and load range of the internal combustion engine. According to the invention, such a mixture formation device can reduce production costs as well as space requirements compared to known solutions. The invention also relates to an internal combustion engine operated with a burnable gas, particularly compressed natural gas (CNG), comprising such a mixture formation device in the intake tract thereof.

The invention discloses a novel special spreader for saline-alkali soil desulfurization gypsum modifier, comprising a frame.The lower front and rear ends of the frame are provided respectively with bearing blocks, transmission shafts are fitly mounted respectively in the bearing blocks, front and rear wheels are fixedly connected respectively to two ends of the transmission shafts at the front and rear ends, a stirring device is fixedly connected to the upper surface of the front end of the frame through bolts, the upper end of the stirring device is fixedly connected with a storage bucket, the lower end of the stirring device is added with a spreading device, a bearing block is disposed on the lower surface of the frame between the front wheels and the rear wheels and is internally fitted with a crushing roller, the left end of the crushing roller is connected with a high-speed output shaft at the bottom of a gearbox through a transmission shaft, and the gearbox is fixedly mounted on the left of the upper surface of the rear end of the frame.The spreader of the invention has the function of full-automatic uniform spreading and also has the function of mixing the modifier and soil, helping improve operation effect of the modifier.

The invention relates to a biological batching equipment, which includes a stirring cylinder, a stirring shaft, a stirring rod, a water spray pipe, a blowing pipe and a filter sieve body. The top of the stirring cylinder is provided with a decomposing enzyme inlet. A blowpipe is provided, and the blowpipe communicates with the inside of the mixing cylinder, and a fermentation gas mixing chamber is arranged on the top of the mixing cylinder, and the fermentation gas mixing chamber communicates with the inside of the mixing cylinder, and the filter sieve body is arranged at the lower part of the mixing cylinder , the bottom of the mixing cylinder is provided with a stirring shaft, the stirring shaft is provided with stirring rods in the left and right directions, and a water spray port is provided on both sides of the stirring cylinder, and the water spray port communicates with the water spray pipe. The invention has the advantages of simple structure, simple operation and good uniformity of preparing biological materials.

The invention belongs to the technical field of fertilizer processing, and particularly discloses a composite fertilizer production device. The composite fertilizer production device comprises a powerunit, a stirring unit, a cleaning unit and a discharging unit, wherein the discharging unit comprises a hopper and an ejector rod; the hopper is hinged to a door; the stirring unit comprises an outerbarrel and an inner barrel; a stirring rod is fixed on a side wall of the inner barrel; the power unit comprises a transmission mechanism, a rotating barrel and a motor; the transmission mechanism isused for driving the rotating barrel and the inner barrel to rotate simultaneously; a closed curved groove is formed in the inner wall of the rotating barrel; a connecting rod of which one end is clamped in the curved groove is fixed on the ejector rod; the cleaning unit comprises an annular scraper blade and a telescopic mechanism; a cavity is formed in the lower portion of the ejector rod; a through opening is formed in the ejector rod; a universal joint is arranged at a connection position of a rotating center on the bottom of the rotating barrel; a corrugated tube is connected between theuniversal joint and the lower portion of the ejector rod; and an air tube is connected between the universal joint and the telescopic mechanism. By the device, the problem that excrement is attachedto the inner wall of the device and is difficult to clean can be solved.

The invention relates to a compound formula for supplement protein, which is mainly made from soy bean protein powder, garden stuff fiber and lecithin. The invention is made by mixing the raw materials equably according to the prescription ratio. The invention can supplement protein and can avoid ingesting excessive body fat and cholesterin while supplementing protein. The invention is suitable for the people who want to ingest protein in a healthier way besides the high-calorie protein foods, the people who can not have enough milk, meat or other high protein foods in daily diet and the people who need to supplement protein extra.

The invention discloses flue gas denitration equipment, which comprises a mixing chamber, a denitration chamber, a conveying pipe device, an ammonia spraying device and a gas inlet pipe. The conveying pipe device is fixedly connected between the mixing chamber and the denitration chamber, the gas inlet pipe is fixed to one side of the bottom of the surface of the mixing chamber and communicates with the mixing chamber, one end of a zigzag pipeline is communicated with one side of the top of the mixing chamber, the end, away from the mixing chamber, of the zigzag pipeline is communicated with one side of the bottom of the surface of the denitration chamber, a first-stage mixing device is arranged in the zigzag pipeline and close to the mixing chamber, and a secondary mixing device is arranged in the zigzag pipeline and is close to the denitration chamber. The invention relates to the technical field of denitration equipment. According to the flue gas denitration equipment, the purpose of uniform mixing is achieved, flue gas and ammonia gas can make full contact, mixing is rapid and uniform, follow-up denitration work is facilitated, emission of harmful substances is reduced, pollution to the environment is reduced, human health is facilitated, and the use performance is improved.

The invention discloses an explosion-proof tire which comprises a tire body composed of a tread, a tire body, a buffer layer and a tire bead, wherein the tread is a rubber composition prepared by taking rubber as a matrix and adding with auxiliary materials such as a reinforcing filler, an accelerant, a vulcanizing agent, a vulcanization accelerator and an adhesion promoter; an explosion-proof layer made from high polymer explosion-proof materials is sprayed on the surface of the tread; a plurality of capsule cavities are formed in the tread and filled with leak-repairing glue. With the adoption of a manner of combining the explosion-proof layer, the capsule space and the tread rubber, the explosion-proof layer is sprayed on the surface of the tread, so that the elasticity of the tread surface is increased, and the acting force of a sharp object on the tread rubber is relieved; and moreover, the capsule cavities are formed in the tread rubber, when the sharp object pierces the capsule cavities to reach the tire body, the leak-repairing glue in the capsule cavities reacts with air so as to perform curing, and the condition that running safety is threatened by leakage of high-pressure gas in the inner liner is avoided.

The invention discloses a novel mixing tank, which comprises a tank body, a material inlet and a material outlet located on the left and right sides of the tank body, a first motor located on the right side of the tank body and connected to a first transmission device, the first The transmission device is connected to the first stirring shaft located inside the tank, and the first stirring shaft is provided with 4-6 first stirring paddles; the second motor located on the left side of the top of the tank is connected to the second transmission device , the second transmission device is connected with the second stirring shaft located inside the tank body, and the second stirring shaft is provided with a second stirring paddle; the third motor located on the left side of the top of the tank body is connected with the third transmission device, The third transmission device is connected with the third stirring shaft inside the tank, and the third stirring shaft is provided with a second stirring paddle; the first stirring paddle, the second stirring paddle and the third stirring paddle are not in contact with each other. The equipment is a new type of mixing tank, which is convenient for feeding and moving, and can make the material mix more evenly and improve the mixing quality.

The invention provides organic fertilizer production fermentation equipment for improving soil, belongs to the technical field of fertilizer fermentation production, and solves the problem that some existing fermentation equipment adopts a stirring mode to dissipate heat of raw materials, and the heat dissipation effect is poor. The organic matter fertilizer production fermentation equipment for improving soil comprises a fermentation tank body, a water tank, a bottom shell, a box body, a stirring driving mechanism, a feeding and discharging mechanism and a reciprocating driving mechanism, a cooling pipe is fixedly arranged on the surface of the fermentation tank body, and the front face of the water tank communicates with a conveying pipe and a backflow pipe. The fermentation tank can shake up and down in the stirring process, so that the up-and-down flowing speed of raw materials is increased, the fluidity of the raw materials is improved, mixing of the raw materials is facilitated, water is adopted for cooling the fermentation tank and the raw materials in the fermentation tank, the cooling rate of the raw materials is increased, and the stirring efficiency is improved. And meanwhile, the equipment can cool water and prevent the water temperature from rising, so that the heat dissipation effect of the water on the raw materials is ensured.

The invention provides an anti-blocking agent for phosphogypsum as well as a preparation method and a use method of the anti-blocking agent. The anti-blocking agent comprises the following raw materials in percentage by mass: 3-7% of a surfactant, 2-6% of a volatile solvent, 1-10% of a film-forming agent and the balance of water, wherein the film-forming agent is high-hydrogen-content silicone oil; the volatile solvent is ethanol and / or methanol. When the anti-blocking agent provided by the invention is used for preventing ardealite from blocking, the adding amount of the anti-blocking agent is 1-10% of that of ardealite, the anti-blocking agent is added in a spraying manner and then uniformly mixed, and the anti-blocking agent can effectively prevent ardealite from blocking, is added in a spraying manner, and is convenient to use and good in anti-blocking effect.

The invention discloses a self-balancing soil quality detection machine which comprises an equipment shell, a placement groove with an upward opening is formed in the equipment shell, a collection box is slidably connected in the placement groove, first slide ways which are symmetrical in position are arranged in the left wall and the right wall of the placement groove in a communicating mode, a first sliding block fixedly connected with the collection box is connected into each first slide way in a sliding mode. Collected soil can be treated on site, the soil is dried and extruded, large pieces of soil accumulated together are divided into dry fine soil, mixing of the soil and reaction liquid is facilitated, three sets of treated soil are obtained from the same soil sample through the gravity of the soil, the soil can be detected multiple times, the reliability of a detection result is ensured, meanwhile, the quality loss of the soil in the transfer process can be avoided, and the influence on the detection result is avoided.

The invention relates to the technical field of stirring of gypsum powder slurry, in particular to powder slurry stirring equipment for gypsum production. The equipment is used for solving the problemthat the quality of a final gypsum finished product is influenced because the gypsum powder slurry cannot be uniformly stirred by stirring equipment in the prior art. The equipment comprises a stirring box, a primary stirring mechanism and a secondary stirring mechanism, the primary stirring mechanism comprises a plurality of stirring plates mounted on a rotating shaft, a plurality of vertical rods are mounted on the bottom surfaces of the stirring plates in the length direction of the stirring plates, and vertical stirring assemblies are mounted at the lower ends of the vertical rods; and guide discs located below the stirring assemblies are detachably installed on the inner wall of the stirring box, and a plurality of material leaking holes are formed in the guide discs. The gypsum powder slurry is primarily stirred through the primary stirring mechanism, and then the gypsum powder slurry is stirred again through the secondary stirring mechanism, so that the gypsum powder slurry canbe stirred more uniformly, and the quality of the finally prepared gypsum finished product is better.

The invention discloses a healthy full-nutritional coarse cereal ice cream and a preparation method thereof. The preparation method comprises the following steps: performing wet superfine grinding on corn kernels and sesame to obtain superfine ground corn pulp and superfine ground sesame paste, pretreating sodium alga acid, carboxymethylcellulose, glycerin monostearate, guar gum, locust bean gum and salt so as to obtain a first auxiliary material mixture, pretreating white granulated sugar, glucose syrup, light cream and superfine ground sesame paste so as to obtain a second auxiliary material mixture, adding the first auxiliary material mixture and the second auxiliary material mixture into the superfine ground corn pulp, and adding water to obtain total ice cream materials; and sterilizing, homogenizing, cooling, ageing, gelling, filling forming and hardening, thereby obtaining the healthy full-nutritional coarse cereal ice cream. The ice cream disclosed by the invention is good in color, rich in nutrition and fine and smooth in taste, the total nutritional ingredients of the coarse cereals are prevented from being wasted, and the defects that traditional cold drink food is high in sugar and oil fat are overcome.

The invention discloses modified polyester fiber for water purification. The modified polyester fiber is prepared from the following components in percentage by weight of 5-7% of master batch and 93-95% of polyester chips, wherein the master batch is prepared from the following components in percentage by weight of 20-25% of nano medical stone powder and 75-80% of polyester powder; the nano medical stone powder is prepared from the following components in percentage by weight of 5-7% of medical stone powder and 93-95% of coupling agent powder; and the polyester powder is prepared from the following components in percentage by weight of polyester chips and calcium stearate powder accounting for 0.01-0.1% of the weight of the polyester chips. According to the modified polyester fiber for water purification provided by the invention, the added value of the polyester fiber and the high-value application of the fiber are improved by utilizing the water purification function of medical stone.

The invention discloses a water heater with a detection device, and a detection method thereof. A combustor and an air blower of a water heater body are arranged in a combustion box; an outlet of theair blower communicates to an inlet of the combustor; an inlet of the air blower communicates to the outside of the combustion box; a gas pipeline communicates into the combustion box; a fuel gas valve is arranged on the gas pipeline; the detection device is arranged in the air blower; an inlet and an outlet of a water body pipeline are formed in two sides of the combustion box; the top part of the combustion box communicates with an exhaust pipeline; a detector of the detection device is arranged in the air blower; the output end of the detector is connected to the input end of a processor; and the output end of the processor is connected to the fuel gas valve, an alarm and the air blower. The water heater with the detection device, and the detection method provided by the invention solvethe problems that in most water heaters at present, waste gas is not easy to treat, a ventilation effect is poor, and the ageing condition of the air blower cannot be detected in real time.

The invention discloses a diagonal tire for a sedan car. The diagonal tire comprises a diagonal tire body composed of a tire tread, a tire body, a buffering layer and a tire bead, wherein rubber is used as a base body and supplemented with reinforcing filler, accelerant, vulcanizer, vulcanization accelerator and adhesion promoter to prepare a rubber composition serving as the tire tread, and rubber includes fluoroether rubber, butadiene-acrylonitrile rubber and natural rubber. The diagonal tire tread manufactured from the rubber base body composed of fluoroether rubber, butadiene-acrylonitrile rubber and natural rubber is adopted, compared with a tire tread mainl manufactured from solution polymerized styrene-butadiene rubber, high temperature resistance and deformation resistance of fluoroether rubber are reserved, the diagonal tire is suitable for the sedan car and capable of meeting requirement for different driving environments of people, and the service life of the tire can be prolonged.

A step type combustion chamber of a heavy-duty diesel engine comprises a combustion chamber outlet (8), a straight port combustion chamber throat port (9), a pit (5) and a central boss (6) which are connected in sequence from a piston top face (7) to the bottom of the combustion chamber; the combustion chamber outlet (8) is of a step structure; the step structure comprises an arc section (1), a step vertical section (2) and a step transverse section (4) which are connected in sequence from top to bottom; and the lower end of the step transverse section (4) is connected with the straight port combustion chamber throat port (9) through a chamfer I. The step structure has a flow guiding effect and can guide more fuel oil to the upper portion of the combustion chamber, and by matching of sprayed and entrained airflow, upper and middle air can be better utilized, so that soot emission is reduced obviously.

The invention belongs to the field of building materials, and particularly relates to self-compacting mortar and a preparation method thereof. The self-compacting mortar provided by the invention comprises the following components in parts by weight: 120-300 parts of Portland cement; 20-120 parts of sulphoaluminate cement; 50-90 parts of fly ash; 100-300 parts of molybdenum tailing powder; 20-80 parts of limestone powder; 5-30 parts of an expanding agent; 200-400 parts of molybdenum tailing ceramsite; 1-10 parts of fibers; 1-5 parts of a water reducing agent; and 100-200 parts of water. According to the mortar provided by the invention, the molybdenum tailing powder and the molybdenum tailing ceramsite are used as production raw materials, so that resource utilization of molybdenum tailings is realized; the construction time of the mortar can be adjusted within 20min-1h, the initial setting time is 2-4h, the 28d strength reaches C30-C50, and the volume weight is within 2000kg / m < 3 >; in addition, the mortar does not need to be vibrated manually in the whole casting process, and construction is convenient.

The invention discloses novel selective non-catalytic reduction (SNCR) denitration apparatus of a circulating fluidized bed boiler, and belongs to the field of SNCR flue gas denitration of circulatingfluidized bed boilers. The SNCR denitration apparatus comprises an ammonia water storage tank, a double-fluid spray gun, a cyclone separator outlet flue and the like; an outlet of the ammonia water storage tank is connected with an inlet of an ammonia water variable-frequency pump through a conveying pipe; an outlet of the ammonia water variable-frequency pump is connected with a liquid inlet ofthe bottom end of the double-fluid spray gun through a conveying pipe; an outlet of a desalted water tank is connected with an inlet of a desalted water variable-frequency pump through a conveying pipe; an outlet of the desalted water variable-frequency pump is connected with an outlet conveying pipe of the ammonia water variable-frequency pump through a conveying pipe; an outlet of a compressed air tank is connected with an atomizing air interface of the double-fluid spray gun through a conveying pipe; an outlet of a protective air device is connected with an inlet of a protective air conveying fan through a conveying pipe; an outlet of the protective air conveying fan is connected with a cooling air interface of the double-fluid spray gun through a conveying pipe; and the double-fluid spray gun is inserted into the cyclone separator outlet flue, wherein all the conveying pipes are stainless steel pipes. The SNCR denitration apparatus has the advantages that the air quantity demand issmall, energy consumption is low, and the service life of the system is long, and the like.

The invention discloses a flame-retardant trenchless modified polypropylene plastic cable conduit. The flame-retardant trenchless modified polypropylene plastic cable conduit is prepared from the following components in parts by weight: 100 parts of PP resin, 2 to 20 parts of octabromo ether, 2 to 8 parts of antimony oxide, 10 to 15 parts of nano carbonic acid, 0.1 to 1.0 part of a coupling agentKH-550, 0.1 to 1.0 part of an antioxidant 1010, 0.1 to 1.0 part of zinc stearate and 0.1 to 1.0 part of barium stearate. The flame-retardant trenchless modified polypropylene plastic cable conduit hasrelatively strong flame retardancy, also has relatively strong impression and rigidity, can improve the impact resistance of the cable conduit, is more beneficial to processing, and can prolong the service life of the flame-retardant trenchless modified polypropylene plastic cable conduit.

The invention belongs to the technical field of medicinal plastic containers and particularly relates to a method for increasing the airtightness of a medicinal plastic container. The method includes:adding mixing auxiliaries with the weight being 2-6% of the weight of a polyethylene raw material into the polyethylene raw material, and sufficiently mixing, wherein the polyethylene raw material comprises polyethylene with the molecular weight being 0.1-0.3 million, polyethylene with the molecular weight being 0.05-0.1 million, polyethylene with the molecular weight being 0.3-0.5 million and polyethylene with the modified molecular weight being 3-6 million. Compared with the prior art, the method has the advantages that dielectric barrier discharge is utilized to modify the ultrahigh-molecular-weight polyethylene material, the modified material is mixed with other raw materials to prepare the plastic container, material compatibility can be enhanced, the high-temperature resistance andairtightness of the material can be increased effectively, and medicine pollution during long-term use of the container can be avoided; the method is simple in process, easy in condition control, capable of reducing the decomposition of additives and capable of expanding the application range of the polyethylene material.

The invention relates to the technical field of hydrogen chloride preparation, in particular to a hydrogen chloride generator based on pressure control, which comprises supporting legs, a reaction kettle is fixedly mounted on the upper end surfaces of the supporting legs, a feed inlet is formed in the upper side of the front end surface of the reaction kettle, and a liquid storage barrel I is fixedly mounted on the left end surface of the reaction kettle; a second liquid storage barrel is fixedly installed on the right end face of the reaction kettle, a reaction control mechanism is arranged in the reaction kettle and comprises a first rod, a second rod, a first rack, a first spraying pipe, a third rod, a fourth rod, a second rack and a second spraying pipe, and a first movable plate is movably installed on the left side in the reaction kettle. According to the hydrogen chloride generator equipment, the conveying of hydrogen chloride gas and the supplement of reaction raw materials can be automatically completed according to the change of internal gas pressure, compared with a traditional manual raw material adding method, a large amount of manpower is saved, the working procedures of conveying gas and supplementing the raw materials can be automatically completed, and the labor cost is reduced.

The invention belongs to the technical field of electric appliances, and particularly relates to a combustor and a gas stove. The combustor comprises a gas distribution piece, an inner ring fire cover and an outer ring fire cover, the gas distribution piece is provided with an injection channel, a gas inlet channel, a disturbance channel and a ventilation cavity, one end of the ventilation cavity communicates with the gas outlet end of the injection channel through the gas inlet channel, the first end of the disturbance channel communicates with the middle of the injection channel, and the second end of the disturbance channel communicates with the ventilation cavity; a disturbance included angle is formed between the gas outlet direction of the disturbance channel and the gas outlet direction of the gas inlet channel, the inner ring fire cover is arranged on the gas distribution piece, and a gas mixing cavity of the inner ring fire cover communicates with the gas outlet end of the injection channel. The outer ring fire cover is arranged on the gas distribution piece, and the gas mixing cavity of the outer ring fire cover is communicated with the other end of the ventilation cavity. According to the burner, the gas inflow of the inner ring burner cap and the outer ring burner cap can be balanced, mixing of the gas and primary air is facilitated, combustion is more sufficient, the CO emission is reduced, and good practicability is achieved.