50results about How to "Improve wall effect" patented technology

The invention discloses a dust removing system for a fully-mechanized coal mining workface. The system includes a dust control system installed on one side of a roadheader, a dust suction system and a dust collecting system installed on the other side of the roadheader, wherein the dust control system comprises a press-in type fan, a press-in type air duct and a wall-attached air duct which are connected with each other in turns; the dust suction system comprises a first suction hood for sucking dust on the cutting head position of the roadheader, a second suction hood for sucking dust on the insertion board position of the roadheader, a third suction hood for sucking dust on the break-of-bulk-point position of a scraper conveyor and belt conveyor, a dust suction air duct and a suction hood assembly box, and the first suction hood, the second suction hood, the third suction hood and the dust suction air duct are all connected to the suction hood assembly box; the dust collecting system comprises an extraction type air duct, a dust remover and an extraction type fan which are connected with each other in turns, and the extraction type air duct is connected to the suction hood assembly box. The dust removing system for the fully-mechanized coal mining workface can effectively control diffusing and spreading of dust in underground roadways, has a good dust suction effect and high dust collecting efficiency, and can greatly reduce the dust concentration of the fully-mechanized coal mining workface.

The invention belongs to the field of well drilling. Aiming at solving the problems that the water loss amount of the traditional positively-charged drilling fluid is great and the drilling fluid cannot be simultaneously used together with a filtration-reducing agent, the invention provides an MMH (mixed metal hydrides) mud composite additive. The MMH mud composite additive is prepared from the following raw materials in parts by weight: 1 part of MMH, 0.2-3 parts of xanthan gum, 0.05-0.1 part of polymer covering inhibitor, 0.05-0.15 part of tackifier, 0.1-0.3 part of organic silicon de-foaming agent and 0.2-0.3 part of superfine calcium carbonate. The invention further provides a drilling fluid which is prepared from the MMH mud composite additive.

The invention relates to a system and method that comprises at least two parallel apparatus racks and at least two cooling units. The cooling units are configured to produce horizontal cooled airflows toward outer sides of the at least two apparatus rack. The cooling units comprise an upper side inlet for airflow to be cooled. The system and method achieve a more effective cooling of apparatus racks.

The invention provides a decontamination device with a foam generator, comprising a decontamination device mainframe, a medicament tank and a spray gun. The decontamination device is characterized in that the decontamination device mainframe comprises at least one air compressor, a storage battery and the foam generator, wherein the air compressor adds compression air to the medicament tank through an air-intake pipeline; and the medicament tank can be connected with the spray gun and the foam generator through an outlet pipeline, wherein the outlet pipeline is provided with at least one outlet valve which is communicated with the spray gun and the foam generator in a switching way. The invention adopts the foam generator with self-power, a unique pipeline distribution and arrangement wayand a special structure, thereby realizing the purpose of one device with multiple use, being suitable for different application environments and bringing about no adverse effect on portability.

The invention provides a wide-speed-range jet flow control aircraft. The wide-speed-range jet flow control aircraft comprises an aircraft body and wings arranged on the left side and the right side of the aircraft body, wherein flow separation restraining devices are distributed on a front edge of each wing in the spanwise direction of the wing and used for restraining flow separation on a surface of the wing; an adjustable nozzle circular rector control device is arranged on a rear edge of the outer side of each wing to provide rolling control for the aircraft; a binary jet flow thrust vector device is arranged in the middle of a rear end of the aircraft body, and pitching and yawing control in wide-speed-domain flight is carried out through the binary jet flow thrust vector device. According to the wide-speed-range jet flow control aircraft, a problem that the three-axis attitude control of an existing control-surface-free aircraft in a low-speed, high-attack-angle and high-subsonic-speed flight state fails is solved.

A solvent extraction method for hydrometallurgical liquid-liquid extraction processes, in which method solution phases are separated from a dispersion while the dispersion flows horizontally in a settler from a feed end to a discharge end. The mass flow of the dispersion and solution phases is divided into a plurality of parallel and mutually separated plug flows flowing in the settler from the feed end to the discharge end. The settler (1) comprises a plurality of elongated settler sections (4) which are mutually separated and side by side in parallel to each other, Inc settler sections (4) extending from the feed end (2) to the discharge end (3), forming a plurality of mutually separated parallel plug flow channels.

The invention discloses a turbine blade double-layer wall cooling structure with transverse vent holes, and relates to the field of turbine blade cooling structures. The turbine blade double-layer wall cooling structure is characterized by comprising an outer-layer wall, an inner-layer wall, short partitions and long partitions; and air film holes are formed in the outer-layer wall of a turbine blade, jet holes are formed in the inner-layer wall of the turbine blade, the short partitions are connected between the outer-layer wall and the inner-layer wall to divide the space between the outer-layer wall and the inner-layer wall into at least two cooling units, , the transverse vent holes are formed in the short partitions, and a cavity defined by the inner-layer wall is divided into at least two air inflow cavities by the long partitions. The wall attachment of a cooling air film is improved, and the cooling efficiency of the air film is improved; the flow of cooling gas of the air filmholes in the upstream and downstream portions of the turbine blade is balanced, the turbine blade is more uniformly cooled, and meanwhile the cooling effect of the tail edge of the turbine blade is improved; and the heat exchange area is increased, the weight of the turbine blade is reduced, and the turbine blade double-layer wall cooling structure is easy to machine and achieve.

The invention provides a high-molecular hydrogel fire extinguishing agent and a preparation method thereof. The high-molecular hydrogel fire extinguishing agent is prepared from the compositions in percentage by weight: 0.2-1% of super absorbent resin, 0.1-1% of curdlan, and the balance of water. In order to enhancing wall adhesion performance of the fire extinguishing agent, and solving the problems that the retention time of the fire extinguishing agent on the surfaces of burning objects and the surfaces of protected objects is too short, and consequently the fire extinguishing agent cannotbe effectively utilized to extinguishand retard firein time, the curdlan is creatively added, the curdlan can obviously improve the adhesiveness of the high-molecular hydrogel fire extinguishing agentand plays an important role in improving the fire extinguishing efficiency of the high-molecular hydrogel fire extinguishing agent, the curdlan acts synergistically with other components, thus the high-molecular hydrogel fire extinguishing agent has good adhesion on vertical wall spaces and the surfaces containing stainless steel, and the fire extinguishing efficiency is good.

The invention discloses a construction process for an underwater churning-driven cast-in-place bored pile by adopting a chemical slurry powder to make slurry and protect a wall, comprising the following specific operation steps of: 1, making construction preparation, specifically, fully preparing equipment, tools and objects required by construction, flattening and compacting a construction site,cleaning impurities, removing soft soil, measuring and labeling the center of a pile position, and embedding a pile casing; 2, putting a drilling machine in place, moving the drilling machine to the pile casing, conducting installation and adjusting on the drilling machine, making a drill bit to be aligned with the center of the pile position, integrally checking the drilling machine, and removingfaults in time; and 3, conducting wall protection by slurry, specifically, arranging a slurry pool in a construction site. A double-bottom sand bailing drill is used for bailing slag, and through combination with a pump suction reverse circulation hole-cleaning construction process, the hole cleaning speed is high, hole bottom sediment can be effectively controlled, chemical slurry is prepared according to a proportion determined based on the construction site geology and actual conditions, complex geological conditions in water are considered, the wall protecting capacity of the slurry is improved, the hole forming quality is guaranteed, and the construction progress is accelerated.

The invention discloses a drilling bucket and a rotary drilling rig, wherein the drilling bucket comprises a drilling bucket upper bottom part, a drilling bucket lower bottom part, and a drilling bucket barrel connecting the drilling bucket upper bottom part with the drilling bucket lower bottom part, and the maximum diameter of the drilling bucket barrel is larger than the maximum diameter of the drilling bucket upper bottom part and the maximum diameter of the drilling bucket lower bottom part. The drilling bucket provided by the invention adopts the invention of unequal diameters, the maximum diameter of the drilling bucket barrel is designed to be larger than the maximum diameter of other parts of the drilling bucket, then the drilling bucket barrel can be in tight fit with the hole wall in the drilling process and has certain drilling guide effect, the problem of deflective drilling is effectively solved, the impact on the drilling bucket and the lateral force transmitted upwards to structures like a drilling rod and a mast are reduced, the working stability of a main engine structure of the rotary drilling rig is improved, and meanwhile, the hole wall is fixed. The rotary drilling rig provided by the invention also has the benefits.

The invention aims at providing a construction method of an underground diaphragm wall. A separation wall composed of double rows of three-axis mixing piles is adopted, and double anti-seepage measures are adopted at a joint of the underground diaphragm wall, so that the technical problems that a groove is prone to collapsing in sludge geology, and leakage is prone to occurring at a waterproof weak position of the underground diaphragm wall are solved. The method comprises the following steps of building the separation wall composed of the three-axis mixing piles; reinforcing two sides of a construction position of the underground diaphragm wall by adopting the three-axis mixing piles; constructing the underground diaphragm wall by adopting a groove-jumping construction operation mode, a slurry retaining wall construction process and an underwater concrete pouring construction process, wherein a joint part of the underground diaphragm wall is the I-shaped steel joint; and treating a groove section joint by adopting a high-pressure jet grouting pile. Through the method disclosed by the invention, the construction problems of large disturbance deformation, easy groove collapse and the like of a sludge stratum can be effectively solved.

A solvent extraction method for hydrometallurgical liquid-liquid extraction processes, in which method solution phases are separated from a dispersion while the dispersion flows horizontally in a settler from a feed end to a discharge end. The mass flow of the dispersion and solution phases is divided into a plurality of parallel and mutually separated plug flows flowing in the settler from the feed end to the discharge end. The settler (1) comprises a plurality of elongated settler sections (4) which are mutually separated and side by side in parallel to each other, Inc settler sections (4) extending from the feed end (2) to the discharge end (3), forming a plurality of mutually separated parallel plug flow channels.

The invention relates to a making method of composite fire-extinguishing particle material in new fire-extinguishing material domain, which is characterized by the following: adapting the potassium hydroxide and acrylic emulsion as the basic raw material; adding sodium lauryl sulfate, potassium bisulfite, ammonium peroxodisulfate and eight looks acid ammonium into the raw material; making the composite fire-extinguishing particle material by neutralization reaction, initiating crosslinking polymerization, dicing, drying, disintegrating, sifting, modifying property compound, measuring and packing. The composite particle material ejects the gelatin with 1:300 qualities mixing to the ignition area, which reduces the temperature of ignition area to inhibit the smog and reaches the goal of quick fire-extinguishing and flame-proof by forming a heat-proof layer and oxygen-proof gelatination layer.

The invention discloses a composite gel anti-fire extinguishing material for preventing and controlling coal mine fires, which is composed of water glass base material, coagulation accelerator, composite aggregate and thickener materials. The added thickener can increase the consistency of the colloid and improve the suspension of the mixed slurry. The composite gel has a simple preparation process and is easy to apply on site; the formed gel has a certain strength and can play a plugging role; the source of raw materials is abundant and the price is low; the product is non-toxic, harmless and tasteless, does not pollute underground mines, and is harmless to the human body Toxic and side effects have obvious market application prospects.

The invention discloses a modular construction method for a water distributing system in a cold storage tank. The method comprises the steps: gathering structural data of a water distributing member, arranging water distributing pipelines in a simulating manner, and setting a unique RIFD code for the water distributing member; constructing a water distributing member conveying device; erecting a water distributing system on the top of the tank; erecting a primary vertical tube in the tank; erecting a water distributing system in the bottom of the tank; and externally coating the water distributing system pipeline and the cold storage tank with insulating layers so as to realize modular water distributing construction. The mounting accuracy can be ensured by mounting at one time by integrating simulated distribution of an electronic terminal, radio frequency coding of unique identifier, special water distributing member conveying device and field construction and mounting, so that the time is shortened, the labor is saved, and the human cost is greatly lowered; by means of primary water distribution in double inner rings, distributive pressure equalizing secondary water distribution and third water distribution by a water distributing cap, the wall attachment effect is increased, fine and uniform flow water distribution is realized, the thickness of an inclined temperature coating in the tank is effectively maintained in an efficient level, and the cold storage effect is good.

The invention discloses a construction method capable of causing a pilot hole to pass through a large-area drifting sand layer through a shaft counter-drilling method. The construction method comprises the following steps of: a: making a construction preparation; b: installing a raise boring machine; and c: carrying out pilot hole drilling construction. In a pilot hole drilling construction process, adopted materials are conventional, and price is low, meanwhile, additionally purchased instruments are not required, little special equipment is adopted, in addition, an integral operation methodis convenient and flexible, construction expenses and machinery equipment input are reduced, engineering construction cost is greatly lowered, and construction safety is guaranteed while an economic benefit is good. An influence on the masses in a surrounding area is reduced through a convenient operation, and surrounding environment and underground water are protected since the adopted materialsare free from environmental hazard substances. The technology has high work efficiency, is high in operability, is safe and environmentally, has good quality, is easy in promotion, saves investments,increases a new option for a disposal method capable of causing the pilot hole to pass through the drifting sand layer, prompts a development of a counter-drilling expanding excavation technology, andhas a great potential social benefit.

The invention relates to an air conditioner indoor unit and a control method thereof. The air conditioner indoor unit comprises a shell, the shell comprises a top plate, a bottom plate, a side surrounding plate and a front plate, the top plate is opposite to the bottom plate, a hollow inner cavity is formed by the top plate, the bottom plate, the side surrounding plate and the front plate, a fan assembly and a heat exchanger are arranged in the hollow inner cavity, the fan assembly comprises a longitudinal air guide wall for defining an air flue, an air outlet of the air conditioner indoor unit is formed in the front plate, the longitudinal air guide wall is in transition to the longitudinal edge of the air outlet through a wall attaching part, the wall attaching wall guides air flow flowing out through the air outlet to be attached to the outer surface of the front plate to advance, and the wall attaching part comprises at least one arc face. The air conditioner indoor unit can be arranged in the room corner, the wall attaching effect of the wall attaching part is used, the air flow can flow along the room wall face, the air flow can be more uniform, and comfort of a person is higher.

The invention provides a vertical air conditioner indoor unit which comprises a machine shell, and a plurality of air outlets located in different positions in the circumferential direction of the machine shell are formed in the machine shell; the wind scooper ring is arranged on the periphery of the machine shell in a sleeving mode in an up-down translation mode, a gap is formed between the wind scooper ring and the peripheral face of the machine shell to form a wind guiding channel, a plurality of separation parts corresponding to the multiple air outlets one to one are formed on the inner side of the wind scooper ring, and each separation part is used for separating the wind guiding channel up and down; the wind scooper ring is configured to be capable of moving to the downward blowing position where each partition part is located above the corresponding air outlet so that air supply airflow flowing out of the air outlets can flow downwards along the outer circumferential face of the machine shell. Or each partition part is moved to an upward blowing position below the corresponding air outlet, so that the air supply airflow flowing out of the multiple air outlets flows upwards along the outer circumferential surface of the machine shell. The vertical air conditioner indoor unit has a better upward blowing effect and a better downward blowing effect.

The present invention relates to a bag filter dust collection system which supplies and sprays compressed air independently to an air amplifier of which the inside is partitioned, by using two control valves separated from each other and two compressed air pipes separated from each other, and thus can provide a stronger cleaning power compared to a conventional compressed air spray apparatus.

The invention provides a gas compressor, a gas turbine with the gas compressor and a gas compressor stability enhancement and efficiency improvement method. According to the gas compressor, through holes are formed in the wall surface, located on the high-pressure stage, of a casing, through holes are formed in the wall surfaces, located on the blade tops of low-pressure stage movable blades, of the casing, through holes are formed from the root portions of low-pressure stage stationary blades to suction surfaces of blade surfaces, and the through holes formed in the wall surface, located on the high-pressure stage, of the casing, the through holes formed in the wall surfaces, located on the blade tops of the low-pressure stage movable blades, of the casing and the through holes formed from the root portions of the low-pressure stage stationary blades to the suction surfaces of the blade surfaces are connected in sequence, so that a self-circulation mechanism with a suction-ejection function is formed. Part of gas sucked from the high-pressure stage of the gas compressor is guided back to the leading edges of the blade tops of the low-pressure stage movable blades and the suction surfaces of the blade surfaces of the low-pressure stage stationary blades through the self-circulation mechanism, and is ejected, and therefore the stall margin of the gas compressor is broadened, flow separation is restrained, and the efficiency of the gas compressor is effectively improved.

The invention discloses a volute tongue, an air conditioner indoor unit and an air conditioner, wherein the volute tongue includes a first volute tongue plate and a second volute tongue plate; the first volute tongue plate is used to be arranged opposite to the wind wheel of the air conditioner; One end of the second volute tongue plate is connected with the first volute tongue plate, and the other end is used to extend towards the air outlet of the air conditioner; the side of the second volute tongue plate facing the air duct has a wind guide surface, and the wind guide surface is close to the end of the air outlet Extending horizontally or upwards; the wind guiding surface is provided with a suction structure so that the wind is blown out along the wall surface of the wind guiding surface. The technical solution of the present invention forms the Kangda airflow flowing along the air-guiding surface, avoiding the premature separation of the airflow from the air-guiding surface, so that the cold air is blown horizontally or upwards, preventing the cold air from blowing downwards and directly blowing people, improving the User comfort.

The invention discloses a well drilling wall protection device and method based on rocking vibration pressure rotary spraying. The device comprises a chassis, a flexible suspender winding drum and a drilling tower are arranged on the chassis, a flexible suspender is wound around the flexible suspender winding drum, the free end of the flexible suspender is connected to a suspension tool body through a head sheave arranged at the top of the drilling tower, the lower portion of the suspension tool body is connected with a rocking vibrator, the lower portion of the rocking vibrator is connected with a high-pressure rotary spraying device, the lower portion of the high-pressure rotary spraying device is connected with a drill bit, a winch is further arranged on the chassis, a traction rope iswound around the winch, and the free end of the traction rope is connected to the suspension tool body through the head sheave. According to the well drilling wall protection device and method based on rocking vibration pressure rotary spraying, the stratum wall protection effect is effectively improved, the usage amount of well drilling mud is reduced, or, a lubricating fluid is directly used, sothat pollution is greatly reduced, meanwhile, the time-consuming and material-consuming procedures of casing pipe wall protection are omitted, the well drilling speed is greatly increased, and the well drilling cost is reduced.

The invention discloses a drilling bucket and a rotary drilling rig, wherein the drilling bucket comprises a drilling bucket upper bottom part, a drilling bucket lower bottom part, and a drilling bucket barrel connecting the drilling bucket upper bottom part with the drilling bucket lower bottom part, and the maximum diameter of the drilling bucket barrel is larger than the maximum diameter of the drilling bucket upper bottom part and the maximum diameter of the drilling bucket lower bottom part. The drilling bucket provided by the invention adopts the invention of unequal diameters, the maximum diameter of the drilling bucket barrel is designed to be larger than the maximum diameter of other parts of the drilling bucket, then the drilling bucket barrel can be in tight fit with the hole wall in the drilling process and has certain drilling guide effect, the problem of deflective drilling is effectively solved, the impact on the drilling bucket and the lateral force transmitted upwards to structures like a drilling rod and a mast are reduced, the working stability of a main engine structure of the rotary drilling rig is improved, and meanwhile, the hole wall is fixed. The rotary drilling rig provided by the invention also has the benefits.

The invention relates to the technical field of rhizoma gastrodiae culturing, and particularly relates to a fungi bag for rhizoma gastrodiae culturing and a preparation method thereof. The fungi bag comprises poplar twigs, mulberry tree twigs, pine needles, sodium alginate, pomelo leaves, rice water, corn soybean milk, peanut shells and walnuts. The invention further provides the preparation of the fungi bag. The fungi bag has the advantages that the production cost is low, mixed bacteria, pest diseases and viruses are not included, the spawn running speed is high, the nutritious absorbing utilization rate is high, the fungi bag is used for performing conventional culturing, the effective ingredient content and drought and disease resisting capability of the rhizoma gastrodiae are improved, and the culturing period of the rhizoma gastrodiae is shortened.

The invention discloses a range hood, which comprises a fume collecting hood, and the fume collecting hood includes a retaining wall forming an annular structure, and is characterized in that an upwardly recessed first collection hood is formed inside the space surrounded by the retaining wall. A smoke chamber and a second smoke collection chamber, the first smoke collection chamber is located at the front side of the second smoke collection chamber. Compared with the prior art, the present invention has the advantages of: by setting two smoke collecting chambers at the front and rear, the oil fume can be surrounded and controlled by the two smoke collecting chambers and secondly inhaled by the fan system, effectively preventing the oil fume from escaping to the smoke collecting hood Outside: By ensuring sufficient depth and slope of the smoke collecting chamber, a better wall attachment effect can be formed, so that the negative pressure can cover the entire oil fume area.

Aiming at the characteristics that deep mine fire accidents are easy to occur, spontaneous combustion accidents are frequent, and a large-area fire area is difficult to extinguish, the invention researches a gel foam material for treating the large-area fire area caused by a deep inflammable coal seam by applying interface chemistry, colloidal chemistry, physical chemistry and field actual environment. Compared with traditional fire prevention and extinguishing measures such as a grouting technology, inert gas, a stopping agent and three-phase foam, the material has the advantages of being high in foaming times, good in stability, good in flame retardant effect, capable of being stacked at a high position, good in air leakage stopping performance, environmentally friendly and the like, and a large-area smoldering fire area can be rapidly extinguished and reburning of the large-area smoldering fire area can be inhibited for a long time. The foaming agent comprises the following components: a compound foaming agent, a thickening agent, a catalyst, a foam stabilizer, a flocculating agent, water, nitrogen and the like.

The invention discloses a modular construction method for a water distributing system in a cold storage tank. The method comprises the steps: gathering structural data of a water distributing member, arranging water distributing pipelines in a simulating manner, and setting a unique RIFD code for the water distributing member; constructing a water distributing member conveying device; erecting a water distributing system on the top of the tank; erecting a primary vertical tube in the tank; erecting a water distributing system in the bottom of the tank; and externally coating the water distributing system pipeline and the cold storage tank with insulating layers so as to realize modular water distributing construction. The mounting accuracy can be ensured by mounting at one time by integrating simulated distribution of an electronic terminal, radio frequency coding of unique identifier, special water distributing member conveying device and field construction and mounting, so that the time is shortened, the labor is saved, and the human cost is greatly lowered; by means of primary water distribution in double inner rings, distributive pressure equalizing secondary water distribution and third water distribution by a water distributing cap, the wall attachment effect is increased, fine and uniform flow water distribution is realized, the thickness of an inclined temperature coating in the tank is effectively maintained in an efficient level, and the cold storage effect is good.

The invention belongs to the field of well drilling. Aiming at solving the problems that the water loss amount of the traditional positively-charged drilling fluid is great and the drilling fluid cannot be simultaneously used together with a filtration-reducing agent, the invention provides an MMH (mixed metal hydrides) mud composite additive. The MMH mud composite additive is prepared from the following raw materials in parts by weight: 1 part of MMH, 0.2-3 parts of xanthan gum, 0.05-0.1 part of polymer covering inhibitor, 0.05-0.15 part of tackifier, 0.1-0.3 part of organic silicon de-foaming agent and 0.2-0.3 part of superfine calcium carbonate. The invention further provides a drilling fluid which is prepared from the MMH mud composite additive.