62results about How to "Improve inhalation performance" patented technology

The invention discloses a liquid supply vehicle, which comprises a frame with a cab. The lower part of the frame is provided with wheels, the rear upper part of the frame is provided with a bedplate, a power driving device is arranged on the bedplate, a centrifugal pump is arranged below the bedplate, the power driving device is in transmission connection with the centrifugal pump, and an inlet and an outlet of the centrifugal pump are connected with a suction pipe and a discharge pipe respectively. The liquid supply vehicle has the advantages of improving the self-sucking effect of a fracturing truck, improving the operation efficiency of the fracturing truck and shortening the operation time, along with reasonable design, simple structure, easy assembly and manufacture, and also can be used for liquid delivery in other industries of flood drainage, sewage clearing and the like.

A strong pressure and a strong shearing force are exerted to a mixture, constituted of two kinds or more of powder materials including a drug powder, while causing the mixture to pass between a press section (26) of a press head (24) and a receiving surface (25) of a cylindrical rotator (23), thereby combining the drug powder with the other powder material. For example, at least one of a drug and a biocompatible polymer is made into a nano particle whose average particle diameter is less than 1000 nm, and the nano particle is made into a composite in accordance with a dry mechanical particle combining method, so as to form a polymer nano composite particle. Thus, it is possible to produce a composite particle, which contains a drug under a stable condition, in a short time, and it is possible to remarkably improve its handling property without losing advantages of the nano particle. As a result, it is possible to favorably apply the foregoing technique to DDS of a powdery drug taken into the body through the lung or a similar drug.

The present invention belongs to the field of environment protecting technology. The crawler-type underwater ecological precise thin-layer sludge dredger consists of main system, hydraulic control system, sludge sucking system in front of the main system, and walking system below the main system. The main system includes box, support rods, frame, lighting unit and video monitor. The present invention has small size, light weight, simple structure and easy operation, and is suitable for dredging sludge in river, lake, reservoir, etc.

The invention relates to a submersible cutting sewage pump with efficient hydraulic performance and belongs to the technical field of submersible pumps. The submersible cutting sewage pump comprising a submersible motor is characterized in that the submersible motor is connected with a pump body below through a connection segment to form a cooling and lubricating oil chamber; an efficient large-pass semi-open impeller having a rear cover plate is disposed in the center of the lower portion of the pump body; an inlet edge of each impeller blade is provided with a 30-45-degree large guiding tilt angle from the rear cover plate and a front cover plate, and a center line of an impeller blade outlet pass is flush with a center line of a radial outlet of the pump body; the lower end face of the pump body is connected with a pump base, a cutting disc which is axially adjustable is connected to the upper portion of the pump base, the cross section of the upper end of the cutting disc is completely the same as a flow surface of the front cover plate, projecting to the impeller blade axial surface, in shape, and a 0.2-0.3 mm required gap can be formed between the upper end of the cutting disc and the flow surface of the front cover plate, projecting to the impeller blade, by adjusting axial movement of the cutting disc. The submersible cutting sewage pump is high in hydraulic efficiency, has a wide efficient area, allows suctioning and passage of large particles, and has good effect of impurity cutting and tearing.

The invention relates to a linear motor reciprocating pump with coupled gear and rack, which mainly consists of a linear motor, a coupler, working hydraulic cylinders, a piston, a piston rod, a gear,a suction valve, a discharge valve, a data collection card, a control computer, a driver, etc. Two cylinders with one coupled gear and rack form an elementary unit; and a multi-cylinder reciprocatingpump with double cylinders, four cylinders and cylinders of even number of more than four can be formed. Two linear motors in one elementary unit can be electrified at respective positive strokes thereof, and can be interrupted at the reverse strokes, and also can be electrified synchronously both at the positive strokes and the reverse strokes. One elementary unit is provided with only one position detection sensor to detect the displacement signal of the motor, and the displacement signal is collected by the data collection card, transferred, and input into the control computer; after the displacement signal is analyzed, a control signal is sent to the driver to lead the motor to realize a desired motion rule. The linear motor reciprocating pump with coupled gear and rack has the advantages of good suction performance, high system efficiency, large discharge capacity, high pump pressure as well as small fluctuation of pump pressure and discharge volume; moreover, the linear motor reciprocating-pump with coupled gear and rack can better fulfill the productive requirements of petroleum, chemical engineering, etc.

The absorbent article 1 of the present invention includes a skin abutting surface 2, a non-skin abutting surface 3 and an absorber 4 interposed between both of the surfaces. The absorber 4 includes a layered part 40 where an upper absorption layer 41 and a lower absorption layer 42 are layered, and the upper absorption layer 41 is positioned on the side of the skin abutting surface. The layered part 40 of the absorber 4 is constituted in such a way that the apparent density of the lower absorption layer 42 is lower than that of the upper absorption layer 41 under loading of 0.5g/cm<2>, and the apparent density of the lower absorption layer 42 is not lower than that of the upper absorption layer 41 under loading of 20g/cm<2>.

The invention relates to a shearing crusher hydraulic station, which relates to a hydraulic station. The purpose of the utility model is to provide a shearing crusher hydraulic station with compact structure, low noise and good heat dissipation. The shearing crusher hydraulic station of the present invention includes a base, and the base is equipped with a motor pump group, an oil tank, a valve group, an accumulator, a cooling device, and a display device, and the motor pump group includes a motor, an oil charge pump, a plunger pump and a gear pump. The motor is connected to the plunger pump, the gear pump is connected in series with the plunger pump, the charge pump is connected to the plunger pump; the fuel tank is set above the motor, and the accumulator is set on one side of the plunger pump; the plunger pump is connected to the valve group, The oil inlet of the oil pump is connected to the oil tank, the oil outlet is connected to the accumulator, the oil inlet of the gear pump is connected to the oil tank, and the oil outlet is connected to the valve group; The oil return line of the pump is connected; the display device includes the plunger pump oil outlet pressure gauge, the plunger pump oil return pressure gauge, the charge pump pressure gauge and the gear pump pressure gauge.

The invention provides a centrifugal coal water slurry pump, which is a vertical single-stage cantilever type centrifugal pump. The centrifugal coal water slurry pump comprises a pump base, a pump frame, an inlet elbow, a water outlet section, a bearing support, a bearing assembly, a shaft, a driving assembly and an impeller, the inlet elbow is connected with the pump base, the water outlet section is respectively connected with the pump base and the pump frame, the bearing support is connected with the pump frame, the bearing assembly is arranged on the bearing support, the shaft is fixed on the bearing support and the bearing assembly, the driving assembly is used for driving the shaft to rotate, the impeller is arranged on the front end of the shaft, the impeller, which is of a closed structure, comprises a front cover plate, main blades and a back cover plate, the center of the front cover plate is an impeller inlet, the main blades are arranged between the front cover plate and the back cover plate and integrated with the front cover plate and the back cover plate, the main blades are a plurality of long blades and a plurality of short blades, the long blades and the short blades are alternately arranged at intervals, so that impeller flow passages are formed, and at one side of the impeller flow passages, which is close to the impeller inlet, the long blades are longer than the short blades.

The invention relates to the field of teaching equipment, in particular to a dust-absorbing blackboard eraser. The dust-absorbing blackboard eraser comprises a dust storage box, dust wiping cotton attached to the bottom of the dust storage box, a filtering device arranged in the dust storage box and an air exhausting device connected with the dust storage box; honeycomb holes and grooves connected with the honeycomb holes are formed in the dust wiping cotton; and dust absorbing holes corresponding to the honeycomb holes are formed in the bottom of the dust storage box. The invention aims at providing the dust-absorbing blackboard eraser which is low in price and is capable of effectively reducing dust pollution of a classroom.

The invention relates to the field of impellers and discloses a high-lift pump impeller for an electric automobile. The high-lift pump impeller for the electric automobile comprises an impeller body (2) installed in a pump body, the impeller body (2) comprises a panel (3) and blades (4) installed on the panel (3), the blades (4) comprise main blade bodies (41) and auxiliary blade bodies (42), themain blade bodies (41) and the auxiliary blade bodies (42) are circumferentially arranged round the central axis of the panel (3), and the length of the main blade bodies (41) is larger than that of the auxiliary blade bodies (42). According to the high-lift pump impeller for the electric automobile, the two kinds of blade bodies are arranged, so that the flow area between the blades is increased;since bending of the blades is reduced and jamming of the blades is also reduced, the circulation area of the blades is increased; and the inlet flow speed is reduced, so that the anti-cavitation performance of the impeller is improved.

The invention discloses a ciprofloxacin dry powder inhaler and a preparation method thereof. The dry powder inhaler is prepared from a drug and a binary auxiliary material, wherein the drug accounts for 80 to 20 percent by mass of the dry powder inhaler, the binary auxiliary material accounts for 20 to 80 percent by mass of the dry powder inhaler, and the binary auxiliary material comprises a mucus diluting agent and biological adhesive protein; the mucus diluting agent is at least one of mannitol, ambroxol hydrochloride, aminothiopropionic acid, and bromhexine hydrochloride; and the biological adhesive protein is at least one of silk fibroin, albumin or spidroin. The dry powder inhaler prepared by the invention is good in mobility, good in aerodynamic performance, capable of targeting thedrug to lung and capable of effectively increasing the local concentration of the drug, has mucus diluting and biological mucosa adsorption characteristics, and is particularly suitable for a patientwith bronchiectasia caused by the chronic infection of the lung.

The invention relates to the technical field of medical instruments, in particular to an atomizing inhalation device for the pediatric internal medicine department. The device comprises a fixing belt,an air bag, an air tube, a breathing mask and an atomizing inhalation tube, wherein the air bag is arranged at the upper end of the breathing mask, the air tube is arranged on the air bag, the fixingbelt is also arranged at the upper part of the breathing mask, and the atomizing inhalation tube is arranged on the side face of the lower part of the breathing mask; the atomizing inhalation tube isconnected with an air distribution device arranged in the breathing mask, the upper side of the air distribution device is provided with an exhaust head, the lower end of the breathing mask is connected with a corrugated pipe, and the other end of the corrugated pipe is connected with an inhalation filtering device. The atomizing inhalation device is simple in structure, reasonable in design andgood in atomizing inhalation effect and can guide filtration and discharge of exhaled air of sick children and prevent cross infection.

The invention relates to an immersed pump system in a low-temperature tank and belongs to the technical field of low-temperature liquid conveying. The problems that an existing immersed pump is not convenient to install and poor in use effect are solved. The immersed pump system comprises the low-temperature tank and an immersed pump and further comprises a pump well which is arranged in the low-temperature tank and is used for isolating the low-temperature tank and the immersed pump, a pump well upper installation seat which is arranged at the upper portion of the pump well and used for installing the pump well, and a top plate arranged on the pump well upper installation seat. A valve body is arranged at the lower portion of the pump well, and the lower portion of the valve body is connected with a valve plate through an elastic assembly. A gas phase pipeline is arranged at the upper portion of the low-temperature tank. A gas phase valve is arranged on the gas phase pipeline. The gasphase pipeline passes through the gas phase valve, then penetrates the pump well upper installation seat and then communicates with the pump well. An air inlet pipeline at the upper portion of the gas phase pipeline is provided with a nitrogen valve.

The invention discloses a sand mixing device, and belongs to the field of oil field corollary equipment. The device comprises a stirring tank body, the stirring tank body is provided with a stirring device used for stirring, a sand inlet is formed in the upper portion of the stirring tank body, a sand adding device is arranged at the position, where the sand inlet is located, of the stirring tank body, sand adding/sand adding stopping is controlled through the sand adding device, and a closed space in the tank body is formed. According to the sand mixing device, the problems of unstable liquid level, even tank overflow risk and short service life of quick-wear parts of a traditional open type sand mixing device when more foam exists are solved, and the risk of tank overflow is effectively avoided by combining the open type sand mixing device and the centrifugal pump principle.