57results about How to "Reduce perforation" patented technology

The cold-guiding heat pipe device includes at least two evaporating tubes and condensing tubes to form the evaporating tube set and the condensing tube set separately via parallel connection with the connecting tubes. The upper connecting tubes for the evaporating tube set and the upper connecting tubes for the condensing tube set are communicated, and the lower connecting tubes for the evaporating tube set and the lower connecting tubes for the condensing tube set are communicated to form the circulating loop. Inside the closed container holding cold storing medium, the evaporating tube set is soaked. The refrigerated warehouse includes heat insulator and cold storing body as the cold source. The present invention has heat pipe with high heat conductance and ring circulating loop so that it has high efficiency, high stability, low cost, low power consumption and high performance/cost ratio.

The invention relates to the technical field of tissue processing, in particular to a preparation technology of a high-water-absorption breathable tissue raw paper material for puerperae. The preparation technology comprises the following steps of pulping, residue removal, pulp grinding, pulp preparing, sizing, papermaking and rewinding. By softening a coating and adding a water-based stripping agent, the wrinkling efficiency of a drying cylinder in the papermaking process is improved, so that the elongation rate of raw paper reaches 20-25%, the air permeability is improved by 30% or above, the horizontal liquid absorption height is increased by 10-15%, and the liquid absorption capacity can reach 3.0 g per gram of water; meanwhile, a wet strength promoter and a wet strength agent are added, so that the wet strength of the raw paper is enhanced; the prepared base paper has high water absorption and air permeability and good wet strength.

The invention provides a submucosal injection solution. The submucosal injection solution comprises, by weight, 0.1-3.0 parts of sodium hyaluronate, 0.001-0.02 parts of coloring agent and 90-99 parts of water. The dyeing agent is one or more of indigo carmine, toluidine blue, phenol red, Congo red and crystal violet. The submucosal injection solution has good fluidity and a long swelling effect, and the sodium hyaluronate can serve as a mechanical barrier. The lubricating effect is good, and friction caused by foreign matters in the esophagus, stomach and intestinal tract during wound healing can be reduced. Local inflammatory response and infiltration of inflammatory cells can be reduced, and bleeding and errhysis can be reduced and inhibited. A protective film is formed on the serosa and retained for a long time, so that the serosa covering the surface of an organ can be better repaired. By affecting the viability of immune cells and cytokines, the immune regulatory function is realized, and the submucosal injection solution has angiogenesis and wound healing promoting, anti-tumor, immune regulation and other physiological functions.

A port spike for medical fluid containers, such as infusate bags, for example, provides two ports to permit recirculation of fluids within the container. The recirculating flow allows bubbles to settle out which can't happen effectively if the flow is sucked out immediately after entering the container. The spike provides two openings inside the container which prevent such short-circuit flow by ensuring that fluid entering the container is not greatly affected by the suction zone of the flow leaving the container.

The invention aims to provide an oscillation impact damping device for liquid goods carrying. By means of the oscillation impact damping device, the angle does not need to be increased for oscillation reduction for a cargo space, and reduction of locating capacity is avoided, the effect of lowering the oscillation impact can be achieved flexibly under the condition of non-stand loading, and the oscillation impact damping device is used for liquid goods carrying. According to the technical scheme, the oscillation impact damping device for liquid goods carrying comprises heat preservation materials, sliding rails, connection ropes, an oscillation reduction assembly, sliding blocks and rails. The goods bin wall is provided with the heat preservation materials. The sliding rails are arranged on the four corners of the goods bin wall, and the sliding blocks in the sliding rails are connected with a main frame of the oscillation reduction assembly through the connection ropes.

The present invention relates to a brewing apparatus for extracting a portion capsule, having a first brewing chamber element and a second brewing chamber element, wherein the first and/or the second brewing chamber element can be moved in an axial direction between a loading position, in which the first and the second brewing chamber element are spaced apart from each other, and an extraction position, in which the first and the second brewing chamber elements form a substantially closed brewing chamber, and wherein the first brewing chamber element has at least one first perforation means for perforating the portion capsule, which perforation means is arranged along a gravitational field of the Earth below a horizontal plane extending substantially at right angles to the gravitational field and centrally through the brewing chamber.

The invention relates to an integrated device for injection and expansion, which comprises a hollow outer tube, and a movable socketed inner tube is arranged inside the outer tube; the front end of the inner tube is connected with an injection needle, and the rear end is connected with a hollow handle; The front end of the outer tube is covered with an expansion balloon, and the rear end is connected with the cylindrical shell; the expansion balloon is connected with the gas injection pipeline inside the outer tube; the handle is movably set in the shell. The invention has reasonable design, simple structure, convenient and safe operation, can quickly establish a submucosal tunnel, saves operation time, and can greatly reduce the risk of perforation or bleeding, creating favorable conditions for improving operation quality.

The invention relates to a drying device (1) for drying a material web, in particular a paper, cardboard, or tissue web, comprising a steam-heatable cylinder (1.1) with an interior that has a lateral face (1.2). The drying device also comprises a device (10) lying in the interior for increasing the heat transfer from the interior to the lateral face (1.2). The device (10) comprises at least one disrupting strip (2), which lies axially and which has a contact surface (8) that is in contact with the lateral face (1.2), and at least one pressing element (3) for pressing the at least one disrupting strip onto the lateral face (1.2). The invention is characterized in that the lateral face (1.2) and/or the contact surface (8) of the disrupting strip (2) has means for increasing the friction coefficient between the lateral face (1.2) and the disrupting strips (2).

The invention discloses preparation of a liquid collagen submucosal filler. Collagen is of type I and has a complete natural triple helix structure, and a hydroxyproline content is greater than 11%. The type I collagen and type I collagen powder prepared from the type I collagen are particularly applicable to preparation of the liquid collagen submucosal filler; and the obtained liquid collagen submucosal filler can serve as a rising agent of a focus in endoscopic mucosal resection or endoscopic submucosal decollement and a repair material of a wound in an operation process, is reasonable in support time span, can be absorbed by a tissue completely, has hemostasis and repair functions at the same time, and has a very good application effect.

The invention discloses an underground screw pump and a construction method for penetrating the underground screw pump. The underground screw pump comprises a positioning pin, the positioning pin is connected to the lower end of a stator, and a center hole allowing a construction instrument or a tool to pass through is formed in the positioning pin. During construction, the lower end of the stator is connected to the positioning pin, the upper end of the stator is connected to a pump upper pipe column, the lower end of the positioning pin is connected to a pump lower pipe column, and the lower end of the positioning pin is lowered to a preset depth in a well; the construction instrument or the tool is connected to the lower end of a construction cable or a rod pipe, and a sliding centralizer is installed on the construction cable or the rod pipe above the construction instrument or the tool; and the construction cable or the rod pipe are lowered to enable the construction instrument or the tool to pass through the stator and the positioning pin, and the construction cable or the rod pipe are lowered to a preset position for construction. According to the underground screw pump and the construction method for penetrating the underground screw pump, the periods of test oil and production operation can be greatly shortened, the operation cost can be reduced to a largest extent, the construction operation range of the combined use of the screw pump and other tools is enlarged, the construction efficiency is improved, and meanwhile, the protection of reservoir is facilitated.

The invention provides a tunnel support for endoscopic submucosal dissection. The tunnel support comprises an air bag, a tubing, a negative pressure tube, a lead guide tube and an inflatable tube; the negative pressure tube, the lead guide tube and the inflatable tube are located in the tubing; the air bag is located at the front end of the tubing; the negative pressure sucking tubes are lengthways arranged on two sides of the upper wall and the lower all of the air bag; outward negative pressure sucking holes which pass through the air bag wall to communicate with the outside are uniformly formed in the negative pressure sucking tubes at the two sides of the upper wall and the lower wall of the air bag; the inflatable tube communicates with the air bag; the negative pressure tube is connected with a negative pressure generator. The tunnel support is simple in structure, convenient and reliable to operate, and effective to support a tunnel during the endoscopic submucosal dissection, so as to greatly reduce perforation and injury on muscularis propria and other complications; in addition, the difficulty at surgery can be greatly reduced, the cutting efficiency can be improved, and meanwhile, the safety of the surgery can be improved.

The invention discloses a method for directly producing ring parts by centrifugal casting and cold rolling, which belongs to the technology field of production of the ring parts. The method is characterized in that the technology process is as follows: (1) melting alloy by an intermediate frequency furnace at the temperature of 1700 DEG C; (2) externally refining by a low frequency (LF) ladle refining furnace at the temperature of 1680-1700 DEG C, carrying out bottom blowing argon, and stirring, deoxidizing and desulfurizing; (3) pouring the refined molten steel of 1550-1560 DEG C into a horizontal centrifuge for the centrifugal casting; (4) sawing by a steel pipe blanking machine and blanking; (5) rolling ring blanks at the room temperature on a precise cold rolling machine, wherein during rolling, the feed rate of each turn must be not less than the minimum feed rate v min of each turn needed by forging penetration of the ring parts, and is also not more than the maximum feed rate v max of each turn allowed by biting of the ring parts, the rolling ratio of the ring parts is selectable for 1.1 to 1.5, and the ring parts are processed into the required shape and dimension; (6) quenching and tempering conventionally the ring parts; and (7) precisely shaping the ring parts conventionally. The method can improve production efficiency, and save the energy and materials.

A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof are disclosed. The weight of graphene in the material is 0.4-1 wt% of the total weight of a styrene monomer and graphene before polymerization. Prepared graphene/polystyrene beads are subjected to foaming, plate pressing and molding to obtain a foam plate. The surface resistance of the foam plate is 10<6>-10<8> [omega], the antistatic requirement is met, the flame retardance grade of the foam plate can be the B1 grade, the heat conductivity decreases from original 0.039-0.042 W/(m.K) to 0.030-0.034 W/(m.K), and the drawing performance increases from original 90 KPa to 220-260 KPa.

An electronic device comprises a circuit board, a chip, a heat dissipation module, a fixing plate, a functional module and a connector. The circuit board is provided with a first surface and a second surface, the chip is arranged on the first surface, the heat dissipation module is arranged on the chip, and the fixing plate corresponding to the chip is arranged on the second surface and connected with the heat dissipation module. One end of the functional module is fixed on the fixing plate in a locking mode, the connector is arranged on the second surface of the circuit board, and the functional module is in electric connection with the circuit board through the connector.

The invention relates to a passive type multifunctional well head backflow dredging compensating device for petroleum industry, mainly comprising a separating backflow assembly and a medicament carrying unit, wherein the separating backflow assembly mainly comprises a well fluid separating unit, a filter, a sand and water storage chamber and a backflow flow rate control unit; the medicament carrying unit mainly comprises a medicament carrier, a medicament can and an air balancing connection pipe, wherein the medicament carrier is respectively communicated with a fluid returning pipe and the medicament can; and after well fluid is separated and filtered by the separating backflow assembly, a part of polluted water enters the medicament carrier through a well fluid backflow pipe column along the fluid returning pipe and is mixed with medicament inside the medicament can by a water power spray principle to flow back to a passage dredging submergence depth air in an oil sleeve ring in the air. The invention reduces the resisting force of the air which upwards flows from submergence depth, prevents the air reversely entering an electric pump, ensures the separating effect of an electric pump separator, prolongs the exemption period of an electric pump well and saves a great amount of operation expense and operation time.

The present invention discloses an OLED display screen, a display panel, and a manufacturing method thereof. The method comprises: forming, on a TFT array substrate, a high-resistance metal wire thatis parallel to an auxiliary electrode and has a spacing less than a threshold; after forming an EL layer of an OLED device, applying voltage to both ends of the high-resistance metal wire, to enable the high-resistance metal wire to generate heat; and after the heat makes a temperature of the auxiliary electrode rise, and makes a organic material of the high-resistance metal wire and the EL layeron the top of the auxiliary electrode evaporated and eliminated, depositing a transparent metal oxide to form a light-exiting surface electrode of the OLED device electrically connected to the auxiliary electrode. According to the manufacturing method, when a technique of connecting the light-exiting surface electrode of the OLED and the auxiliary electrode in a manufacturing process is performed,a punching operation is no longer needed, so that a process manufacturing time is shortened, and production efficiency is improved. Further, production costs may be further reduced because a high-precision laser puncher is not needed.

The invention discloses a separable negative pressure foaming machine with a bottomless bucket, and a preparation method thereof. The separable negative pressure foaming machine comprises a stirring device, a hydraulic lifting device, a negative pressure air extraction device, a separable stirring bucket and a discharge device, wherein the separable stirring bucket comprises the bottomless bucketand a sealing cover; the hydraulic lifting device is fixedly connected with the sealing cover through an upper pull rod; the sealing cover is movably connected with the bottomless bucket through a cylinder and a lower pull rod; and the cylinder realizes the closure and separation of the sealing cover and the bottomless bucket. The separable negative pressure foaming machine disclosed by the invention overcomes the technical problems that the internal structure defects of a product are caused due to air mixing during stirring, and the inner wall of a bucket bottom cannot be self-cleaned and residues exist, so that the production efficiency is reduced, in the prior art, and the provided foaming equipment with the polyurethane bottomless bucket and a negative pressure defoaming stirring device realizes that the next foaming can be carried out without the need of cleaning for a bucket body, and continuous industrial production is efficient and rapid; and meanwhile, the foam holes of foam are fine and uniform, so that the perforation and structure defects are greatly reduced, the mechanical strength of the product is increased, and the appearance quality of the product is improved.