30results about How to "Not easy to flow back" patented technology

The invention discloses a handheld dust collector, which is characterized in that a body of the dust collector is internally provided with the spiral two-level tornado dust-air separation structure and a one-level dust cylinder, wherein the spiral two-level tornado dust-air separation structure comprises a first-level cyclone cylinder, a second-level cyclone cylinder, a spiral gas-air separation device arranged at the upper end of the second-level cyclone cylinder and a cyclone cover. The first-level cyclone cylinder and the cyclone cover carry out first-level gas-air separation on primary dust-air getting into the spiral two-level tornado dust-air separation structure, and separated two-level dust-air gets into the second-level cyclone cylinder to receive second-level dust-air separation. The dust collector disclosed by the invention is small in number of components, simple in assembling procedure and high in comprehensive performance of the complete machine. Meanwhile, the spiral two-level tornado dust-air separation structure is small in size, can effectively reduce the space of the machine body, and realizes the maximum dust storage volume.

The invention relates to a drainage and seepage type felting composite structure. The seepage type felting composite structure comprises a beam-slab felting structure, a permeable PC substrate, a U-shaped ecological water draining and collecting ditch, and a seepage and drainage pipe, wherein the beam-slab felting structure is assembled into a side pavement or a motorized vehicle lane; the permeable PC substrate and the beam-slab felting structure are combined into a motor vehicle lane or a square and have a load effect. The U-shaped ecological water draining and collecting ditch is installed at one side or two sides of the motor vehicle lane or the square; the drainage and seepage pipe comprises a transverse PC pipe and a vertical PC pipe; the transverse PC pipe is communicated with the U-shaped ecological water draining and collecting ditch; and the vertical PC pipe is communicated with the transverse PC pipe. The drainage and seepage type felting composite structure is permeable and breathable, can carry out earth surface heat exchange easily, can recycle rainwater effectively, reduces an urban heat island effect, is suitable for eco-environment protection, is simple in structure, and is simple to construct.

To provide an absorber that has a high absorption speed, is unlikely to cause a liquid to remain on a skin-contacting surface, has excellent dry feeling, and is unlikely to cause excreted body fluid to return, and a water-absorbent resin powder that can be suitably used in the absorber. A water-absorbent resin powder of the present invention is characterized by meeting the following requirements (a) to (d): (a) a bulk density: 0.45 g / ml to 0.62 g / ml; (b) an absorption speed by a vortex method: 20 seconds to 50 seconds; (c) a liquid-passing speed under load: 10 seconds or less; and (d) a moisture absorption blocking ratio: 5% or less. An absorber of the present invention uses the water-absorbent resin powder of the present invention. An absorbent article of the present invention includes the absorber of the present invention.

The invention discloses a printing and dyeing cloth dehydrator. The printing and dyeing cloth dehydrator comprises a base, a groove is formed in the top face of the base, a dehydrating barrel is arranged on the groove, multiple water outlets are formed in the dehydrating barrel, and multiple annular draining grooves are formed in the inner wall of the bottom of the groove; a drain opening is formed in the inner wall of the bottom of each annular draining groove, a pair of inserting grooves is oppositely formed in the side wall opposite to the drain openings, inserting blocks are fixedly connected to one end of a filtering net, inserting sleeves are arranged at the other end of the filtering net, and the inserting blocks and the inserting sleeves are inserted into the corresponding inserting grooves respectively; a pair of connecting rods is formed in the top face and the bottom face of the filtering net, guide grooves are formed in the connecting rods, the upper ends and the lower ends of the inserting sleeves are sleeved with the corresponding guide grooves of the connecting rods, one end of the filtering net is sleeved with the inserting sleeves, and compression springs are fixedly connected between the end of the filtering net and the inner walls of the inserting sleeves. The printing and dyeing cloth dehydrator has the advantages that water is not accumulated in the groove of the base easily, dehydrating efficiency is improved, and water obtained through dehydration can be filtered.

The invention relates to a preparation method of a hip-protecting paper diaper. A paper diaper body comprises two hip-protecting parts, a liquid-permeable surface layer, a composite absorption core layer and a liquid-impermeable bottom layer which are stacked from inside to outside, wherein each hip-protecting part comprises an upper breathable layer, a hip-protecting layer and a lower breathable layer which are stacked up and down in sequence; first rubber is arranged between the upper breathable layer and the lower breathable layer and is positioned on two sides of the hip-protecting layer; the composite absorption core layer comprises an upper-layer absorption core and a lower-layer absorption core which are stacked up and down in sequence; a first flow guide groove is longitudinally formed in the upper-layer absorption core; and a second flow guide groove is longitudinally formed in the lower-layer absorption core. The invention relates to the field of disposable hygienic products. The hip-protecting parts have a good hip-protecting effect; the flow guide and absorption capacity of the composite absorption core layer is improved through the first flow guide groove and the second flow guide groove; and the technical problems that the absorption core body of the paper diaper is poor in flow guide effect and low in absorption speed, the hip is easily stained with liquid, and the red hip of a baby is easily caused are solved.

The invention relates to a fluid absorbent sanitary product. The fluid absorbent sanitary product comprises a surface layer, a bottom layer and an absorbent core located between the surface layer andthe bottom layer, wherein the surface layer is made of a body fluid permeable material; the bottom layer is a waterproof layer; the absorption core comprises a front wing and a rear wing; the absorption core is also provided with a middle convex core which is located between the front wing and the rear wing; the rear wing is provided with a second U-shaped opening which is arranged in the length direction of the absorption core; and the opening direction of the second U-shaped opening is opposite to the direction of the middle convex core. The fluid absorbent sanitary product provided by the invention has the following effects: the fluid absorbent sanitary product can maintain a preset shape after being pressed; the reverse acting force generated by the absorption core at the second U-shaped opening is small; friction to a wearer is reduced; the stability of an absorption area is maintained; a body fluid is prevented from leaking through a femoral seam; and leakage of the body fluid isnot likely to happen to the wearer in the using process.

The invention relates to a manual pressure relief type check valve. A first end opening and a second end opening which communicate with each other are formed in a valve body. A channel between the first end opening and the second end opening is a pressurization channel. A pressurization control device is installed at the first end opening. The side face of the valve body is provided with a pressure relief opening communicating with the pressurization channel. A pressure relief control device is installed at the pressure relief opening. The pressurization control device comprises a closed element and a sealing element which is fixed to the end face of the first end opening and is provided with a pressurization through hole capable of communicating with the pressurization channel. The closed element is movably installed in the pressurization channel. The diameter length of the closed element is larger than the hole diameter of the pressurization through hole and is smaller than the diameter length of the position, where the closed element is located, of the pressurization channel. The manual pressure relief type check valve has higher reliability, the maximum value of air pressure in a container can be increased, the requirements for materials and a process are also lowered relatively, and cost can be reduced.

The invention discloses an impurity cleaning device for a material pneumatic transmission system. A moving body capable of conducting pneumatic transmission in a pneumatic transmission pipeline is included. At least one end of the moving body is opened to form a shovel barrel part so that during transmission of the moving body, the shovel barrel part can be used for shoveling impurities in the pneumatic transmission pipeline into the moving body for collection. The impurity cleaning device has the advantages that the structure is simple and compact, the manufacturing cost is low, operation iseasy, foreign matter in the pneumatic transmission pipeline can be collected in time, the interior of the pneumatic transmission pipeline is kept clean, and maintaining is easy.

The invention discloses a dust removal device which comprises a dust collection opening, a dust collection pipe connected with the dust collection opening, a first dust collection fan arranged on the dust collection pipe, and a second dust collection fan arranged at the tail end of the dust collection pipe, wherein the dust collection pipe is connected with a cavity; a water collection cavity is sleeved outside the cavity; an ash discharging opening is formed in the bottom of the cavity; a water inlet is formed in the top of the water collection cavity; a spraying opening is formed in the inner wall of the cavity; a back strap is arranged outside the water collection cavity. The dust removal device is simple in structure and reasonable in design; due to the matched arrangement of the water collection cavity and the cavity, dust sucked into the cavity can be wetted, so that the mass of the dust is increased, and the dust can be easily deposited to the bottom of the cavity and difficultly flies away or even flows back; during toppling of the dust, under the action of water, the dust can be toppled easily and completely along the water flow and is difficultly adhered; in a use process, the dust removal device can be put on the back through the back strap so as to be convenient to carry and operate, and is suitable for great popularization and use.

The invention discloses a seal ring pairing device and an application method thereof, and relates to the technical field of mechanical seal ring pairing. The seal ring pairing device specifically comprises a ceramic seal wide ring and a ceramic seal narrow ring. The upper surface of the ceramic seal wide ring is movably connected with the lower surface of the ceramic seal narrow ring. A pluralityof protruding blocks are arranged on the inner wall of the ceramic seal narrow ring and are in a calabash shape. The ceramic seal narrow ring is made of graphene and other materials with low hardnessand the lubricating function. The ceramic seal wide ring is made of high-hardness B4C materials. Through the arrangement of the ceramic seal narrow ring and the protruding blocks, stable seal is achieved when the ceramic seal wide ring and the ceramic seal narrow ring relatively rotate, the effect of mechanical seal ring pairing stability is achieved, and the problem about mechanical seal reliability in the severe environment is solved.

The invention belongs to the technical field of natural gas or coal gas production, and relates to a liquid bubble atomization method for gas well stimulation. Multiple liquid accumulation atomization devices are installed in the wellbore to realize the joint use of multiple liquid accumulation atomization devices, and multiple liquid accumulation atomization devices are used in combination to form a functional group, and the bottom of the well is gradually foamed or foamed. Atomization, so as to discharge the bottom-hole fluid out of the wellbore; use the airflow power relay to move the liquid up step by step, and limit the backflow of the liquid through the edge of the atomization device to improve the efficiency of fluid removal. The device body includes an oil pipe and an orifice plate arranged inside the oil pipe. The orifice plate is made of metal or non-metal material, and the orifice plate is provided with circular or polygonal through holes. It can not only effectively overcome the backflow of effusion, but also reduce the amount of chemical agents, save costs, and improve the effective time of measures, and can be widely used in the mining process of natural gas and coalbed methane.

The present invention provides an absorbent body and a water-absorbent resin powder suitable for the absorbent body. The absorption body has a fast absorption speed, the liquid is not easy to remain on the skin contact surface, the feeling of dryness is excellent, and the excreted body fluid is not easy to flow back. The water-absorbent resin powder of the present invention is characterized in that it satisfies the following requirements (a) to (d): (a) Bulk density: 0.45 g / ml to 0.62 g / ml; (b) Absorption speed measured by the vortex method : 20 seconds to 50 seconds; (c) Liquid passing speed under load: 10 seconds or less; (d) Moisture blocking rate: 5% or less. The absorbent body of the present invention uses the water absorbent resin powder of the present invention. The absorbent article of the present invention includes the absorbent body of the present invention.

The invention discloses a water pipe capable of preventing freeze and resisting leakage. The water pipe comprises a water pipe body. A protect panel of an arc structure is arranged on the lower surface of the water pipe body and wraps the water pipe body. A polyester staple fiber needle-punched geotextile layer is arranged on the upper surface of the water pipe body and fixed on the water pipe body, a plurality of anti-freezing bodies are arranged on the polyester staple fiber needle-punched geotextile layer in an embedded mode. A leakage-resistant cement layer wrapping the water pipe body is arranged on the upper surface of the polyester staple fiber needle-punched geotextile layer, and more than one limit bodies are arranged on the leakage-resistant cement layer. The water pipe capable of preventing freeze and resisting leakage has the functions that water is first made to permeate into the soil to effectively improve the underground water level and excess water is made to be discharged, meanwhile, sediments outside the pipe are not prone to backflow, and accordingly, the pipe blocking phenomenon is not easy to occur; the own structure is high in connection strength, so the strength of the own structure is greatly improved; the damaged situations are reduced and the whole service life is prolonged.

The invention belongs to the technical field of natural gas or coal gas production, and relates to an effusion bubblization and atomization method used for gas well stimulation. By means of installation of multiple effusion atomization devices in a shaft, combined utilization of the multiple effusion atomization devices is achieved, a way of a functional group is formed by combined utilization of the multiple effusion atomization devices, and step-by-step bubblization or atomization is conducted on effusion in the shaft bottom, so that the effusion in the shaft bottom is discharged from the shaft; by means of an airflow dynamic relay mode, the effusion is shafted up step by step, and through edge portions of the atomization devices, backflow of the effusion is limited, so that the discharging efficiency of the effusion is improved. A device body comprises an oil pipe and at least one pore plate arranged in the oil pipe, the pore plate is made of metal or nonmetal material, and circular or polygonal through holes are formed in the pore plate. By means of the method, not only can effusion backflow be effectively overcome, but also the dosage of chemical agents can be reduced, the cost is saved, effective time of a measure is increased, and the method can be widely applied to the exploitation process of natural gas and coal bed gas.

The invention provides a water drainage structure for an air filter. An air filter water drainage seat is arranged on an air filter body. The air filter water drainage seat and an air filter water drainage piece are combined. The air filter water drainage seat comprises a water drainage hole and at least two retaining walls, wherein the water drainage hole penetrates the air filter body and is surrounded by all the retaining walls at intervals. The air filter water drainage piece comprises a combination disc, an annular groove, a protruding column, a water drainage space and a water drainage port. The combination disc comprises a combination face combined with one retaining wall. The annular groove is formed in the combination disc. The protruding column is arranged in the annular groove. A tortuous water drainage channel is formed between the protruding column and the retaining wall close to the water drainage hole. The water drainage space is formed between the annular groove and the protruding column. The water drainage port penetrates the annular groove and is communicated with the water drainage space.

The invention discloses a printing and dyeing cloth dehydrator. The printing and dyeing cloth dehydrator comprises a base, a groove is formed in the top face of the base, a dehydrating barrel is arranged on the groove, multiple water outlets are formed in the dehydrating barrel, and multiple annular draining grooves are formed in the inner wall of the bottom of the groove; a drain opening is formed in the inner wall of the bottom of each annular draining groove, a pair of inserting grooves is oppositely formed in the side wall opposite to the drain openings, inserting blocks are fixedly connected to one end of a filtering net, inserting sleeves are arranged at the other end of the filtering net, and the inserting blocks and the inserting sleeves are inserted into the corresponding inserting grooves respectively; a pair of connecting rods is formed in the top face and the bottom face of the filtering net, guide grooves are formed in the connecting rods, the upper ends and the lower ends of the inserting sleeves are sleeved with the corresponding guide grooves of the connecting rods, one end of the filtering net is sleeved with the inserting sleeves, and compression springs are fixedly connected between the end of the filtering net and the inner walls of the inserting sleeves. The printing and dyeing cloth dehydrator has the advantages that water is not accumulated in the groove of the base easily, dehydrating efficiency is improved, and water obtained through dehydration can be filtered.

The invention discloses a device for preventing external damage of a power cable based on a biological induction technology. The device comprises: an induction cable, which is used for generating an induction electric field and disposed between two adjacent intelligent perimeters; a processor, which is electrically connected with the induction cable and used for receiving of potential conversion of the induction cable; and an alarm module, which is used for receiving alarm information output by the processor according to voltage conversion, wherein the induction cable is coated with an insulating sheath, the bottom of the insulating sheath is provided with a strip-shaped groove, the width of the upper part of the cross section of the strip-shaped groove is greater than the width of the lower part of the cross section, and the induction cable is provided with a rainwater wiper. According to the device for preventing external damage of the power cable based on the biological induction technology, induction accuracy in rainy days is improved.

The invention discloses a strong bunching inhibition environment-friendly drilling completion fluid which comprises 80-90 parts of a base liquid and 10-20 parts of a micro emulsion nano preparation, wherein the micro emulsion nano preparation consists of an oxidation gel breaker, a bio-enzyme gel breaker, an acidic gel breaker and a capsule shell; and the oxidation gel breaker and the bio-enzyme gel breaker and the bio-enzyme gel breaker and the acidic gel breaker are isolated by using wrapping membranes. By adopting the drilling completion fluid, a filtering shell can be thoroughly eliminated, the biodegradation flowback effect is good, a hydrocarbon reservoir can be prevented from damage since the fluid is nontoxic, the capacity of an oil and gas well can be increased to the maximum extent, and reservoir stratums can be sufficiently protected.

The invention discloses a spherical high-density micro-nano-scale acid-soluble weighting material as well as a preparation method and application thereof. The weighting material is prepared from the following components in parts by mass: 30 to 70 parts of nanoscale manganous-manganic oxide, 30 to 65 parts of micron-sized manganous-manganic oxide and 0 to 5 parts of dispersing agent. The particle size range of the acid-soluble weighting material is 0.2-15 [mu] m, the particle size median is 6-8 [mu] m, the particles are regular spheres, the density is greater than 4.70 g / cm < 3 >, the hydrochloric acid dissolution rate is greater than 99.50%, the magnetic allowance is less than 0.0014 meu, the magnetic conductivity is less than 8.5 * 10 <-6 >, and the particles are spherical, not easy to settle and easy to flow back, safe, non-toxic and good in suspension property, and can be used as a shielding temporary plugging agent for plugging fine pores and microcracks. Due to the spherical structure, the low flowback pressure is achieved, and the good reservoir protection effect is achieved.

The invention relates to the field of hygienic products, in particular to a feces and urine diaper. The feces and urine diaper comprises a feces and urine diaper body, a hole is formed in the portion, corresponding to the anus, of the feces and urine diaper body, and the outer surface of the feces and urine diaper body is provided with a feces pocket communicated with the hole. Accordingly, the problem that in an existing paper diaper, the internal environment is bad due to the fact that the feces condition cannot be effectively observed is solved.

The invention discloses a window-cleaning machine which comprises a shell, wherein a handle is arranged on the rear part of the shell; a cleaning head is mounted above the shell; a water suction port of the cleaning head is communicated with a water-air inlet of the shell; a sewage collecting box is mounted on the lower part of the shell; a water channel is arranged between the water-air inlet and the sewage collecting box; a water-air separating cavity is arranged between the water channel and the water-air inlet; an air absorbing device is arranged in the shell; an air absorbing port of the air absorbing device is arranged on a lateral wall of the water-air separating cavity; a front baffle is arranged in the water-air separating cavity; a water-air separating plate is arranged between the front baffle and the air absorbing port; a water-stopping plate is arranged in the sewage collecting box; the front end of the water-stopping plate is jointed with an inside wall at the front end of the sewage collecting box; the left and right sides of the water-stopping plate are jointed with left and right inside walls of the sewage collecting box; a clearance exists between the rear end of the water-stopping plate and the inner bottom surface of the sewage collecting box; the front end of the water-stopping plate is not lower than the rear end. The window-cleaning machine can be used for efficiently separating water from air, can prevent water from being absorbed into the air absorbing port and also can prevent water from flowing backwards out of the sewage collecting box.

The invention discloses a 3D printing nozzle structure. The 3D printing nozzle structure comprises a polyether-ether-ketone shell, a polytetrafluoroethylene pipe, a venturi pipe, a nozzle body, a heating tip and a radiator device. A feeding inlet is formed inside the top end of the polyether-ether-ketone shell. The first polytetrafluoroethylene pipe is arranged at the bottom of the feeding inlet.The venturi pipe is arranged at the bottom of the first polytetrafluoroethylene pipe. Trapezoid steel conductive to heat dissipation is arranged on the outer side of the venturi pipe. The heating tipis arranged at the bottom of the venturi pipe. The nozzle body is arranged inside the heating tip. A fixed shell is arranged on one side of the venturi pipe. A patch fan is arranged on one side of thefixed shell. Fixed rods are arranged on the periphery of the patch fan in a surrounding manner. A wind shield is arranged at the other ends of the fixed rods. The area of the wind shield keeps the same as that of the patch fan. According to the 3D printing nozzle structure, the direction of air outlet of the fan is improved, the damage caused by wind force to an unformed printed article can be reduced, and nozzle blocking and material outlet suspension of equipment are not prone to happening.

The invention provides a probing and treatment integrated device for the otolaryngology department, and belongs to the technical field of medical instruments.The probing and treatment integrated device comprises a base, a sleeve is fixedly installed on the left side of the base, internal threads are formed in the sleeve, a motor is fixedly installed on the left side of the base, and a screw rod is fixedly installed on the left side of the motor; the screw rod is in threaded connection with the sleeve, the left side of the screw rod is movably connected with a probe, the screw rod only drives the probe to move in the horizontal plane, a medicine tube is inserted into the probe, a motor is fixedly installed in the probe, a rotating shaft is fixedly installed on the outer wall of the motor, and the motor drives the screw rod to rotate slowly. The moving speed of the screw rod is controlled through the internal threads in the sleeve, the moving speed of the probe can be controlled only by controlling the thread pitch of the internal threads due to the fact that the motor moves continuously, and the purposes of achieving slow-speed continuous movement of the probe and avoiding discomfort of a patient are achieved.

The invention relates to the technical field of petroleum drilling leakage stoppage, in particular to a resin-rubber composite special-shaped body. With high-temperature-resistant and high-strength resin and alloy are adopted as raw materials, triangular pyramid, cone and rhombuses bridging particles with taper angles and different sizes are prepared through high-temperature mixing and squeezing. The bridging particles have obvious taper angles, are easy to enter a stratum crack, are not easy to flow back, have extremely high temperature resistance and pressure resistance, and can be used as a primary bridging material with excellent performance, so that the leakage stoppage success rate of a malignant leakage well is increased. The resin-rubber composite special-shaped body is prepared from the following raw materials: a resin molding agent, a resin solidification accelerator, a strength enhancer, a density regulator and a compatibilizer.

The invention discloses an anti-backflow atomization device, and relates to the field of atomization equipment. The atomization device comprises a shell, a liquid containing bottle, an atomization nozzle, an atomization shell and an air pump. The shell is provided with a mist outlet; the liquid containing bottle is arranged in the shell and used for containing liquid. The atomizing nozzle is arranged in the shell; the atomizing shell is connected between the liquid containing bottle and the mist outlet and is wound outside the atomizing nozzle; the atomizing shell comprises a flow guide pipe extending into the liquid containing bottle, the atomizing nozzle is communicated with the flow guide pipe, and a gap is formed between the peripheral side of the flow guide pipe and a bottle opening of the liquid containing bottle. The atomization shell is provided with an anti-backflow cavity communicated with the gap, and the anti-backflow cavity is used for temporarily storing at least part of liquid in the liquid containing bottle when the shell is inverted; the air pump is arranged in the shell and communicated with the atomizing nozzle. According to the anti-backflow atomization device, through the arrangement of the anti-backflow cavity, at least part of liquid in the liquid containing bottle can be temporarily stored when the shell is inverted, so that the liquid is not prone to backflow from the flow guide pipe, the problem that the liquid flows out of the shell can be solved, and the use experience of a user is improved.

The invention relates to a preparation method of a hip-protecting diaper. The diaper body includes two hip-protecting parts, a liquid-permeable surface layer, a composite absorbent core layer and a liquid-impermeable bottom layer stacked from inside to outside. Superimposed upper air-permeable layer, buttock protection layer and lower air-permeable layer, between the upper air-permeable layer and the lower air-permeable layer, the first rubber is arranged on both sides of the hip-protection layer; the composite absorbent core layer includes the upper layer absorbent core and the lower layer which are successively stacked up and down In the absorbent core, the upper layer absorbent core is longitudinally provided with first flow guide grooves, and the lower layer absorbent core is longitudinally provided with second flow guide grooves. The invention relates to the field of disposable sanitary products. The buttock protector has a good effect of protecting the buttocks. Through the first diversion groove and the second diversion groove, the ability of diversion and absorption of the composite absorbent core layer is improved, and the absorbent core of diapers is solved. The diversion effect is poor, the absorption speed is slow, the buttocks are easy to be stained with liquid, and it is easy to cause technical problems of the baby's red buttocks.