30 results about "Internal mouth" patented technology

The invention provides a method for welding an anticorrosion steel pipeline with no internal repaired mouth, which is applicable to the anticorrosion treatment of a steel pipeline welding connector with an anticorrosion coating in the petroleum industry and the chemical industry. The method is characterized in that a groove with a certain length and depth is machined on a position which is at a certain distance from the end part of the steel pipe, an anticorrosion alloy material is surfaced on the groove, the end part of the surfaced steel pipe is machined into a V-shaped groove, an anticorrosion coating with sufficient thickness is coated on the inner wall of the steel pipe, the anticorrosion coating covers sufficient length of the anticorrosion alloy surfacing layer, then two steel pipes are in butt connection with each other, layering welding is carried out after the two steel pipes are fixed on one point, an argon tungsten-arc welding method is adopted, the anticorrosion alloy material which is identical to that of the surfacing is selected as the filling material, and argon is filled into the pipe to protect the pipe in the welding process. Due to the adoption of the novel technology for welding the anticorrosion steel pipeline with no internal repaired mouth, the corrosion resistance of the inner wall and a weld mouth of the pipeline can be guaranteed, the internal mouth repairing technology on the spot after the welding can be avoided, characteristics such as simplicity in construction and reliability in performance can be realized, and the method is suitable for the real engineering application of the petroleum and chemical industry fields.

The invention relates to a die head structure with the adjustable molten blank radial wall thickness. The die head structure comprises a lower pressing disc and an upper pressing disc, the lower pressing disc is provided with a mouth model containing cavity, and the upper pressing disc is stacked on the lower pressing disc and is provided with an upper pressing disc guiding cavity; the upper portion of an outer opening die extends into the opening die containing cavity and is supported on the upper portion of the lower pressing disc, the lower portion of the outer opening die extends to the position below the lower pressing disc, an inner opening die is located in the outer opening die, the upper portion of the inner opening die is matched with the lower portion of a mandrel sleeve, the lower portion of the inner opening die extends to the position below the lower pressing disc, a melt guiding and feeding cavity is formed between the outer wall of the mandrel sleeve and the inner wallof the upper portion of the outer mouth model, and space between the inner wall of the inner mouth model and the inner wall of the lower portion of the outer mouth model forms a molten blank runner; and the die head structure is characterized by further comprising an inner mouth model anti-deformation supporting mechanism and a plurality of molten blank radial wall thickness adjusting mechanisms,the inner mouth model anti-deformation supporting mechanism is fixed to the bottom of the mandrel sleeve, the molten blank radial wall thickness adjusting mechanisms are fixed to the outer wall of thelower pressing disc, and the molten blank radial wall thickness adjusting mechanisms are sleeved with an inner mouth mold cover. A good supporting condition can be provided for the inner mouth mold;and the requirement for radial change adjustment on the wall thickness of a molten blank is met.

A device for measuring cervical dilation, comprising an airway, a waterway and a scale, the airway is used for vacuuming to absorb on the surface of the internal os of the cervix, the waterway is set in the airway for providing buffering and indicating pressure changes, the scale The scale is sleeved outside the airway, and the outer wall of the airway is provided with a scale, and the end edge of the scale cooperates with the scale to indicate the degree of dilatation of the cervix. It can be used to measure cervical dilation, is convenient to use, can replace digital examination and avoid individual deviation and inconsistency of digital examination, and does not need to adopt complicated mechanical / electronic system.

A bag sealing device for multiple plastic bags, the plastic bag sealing device is provided with at least two protruding tubes (24) on the upper surface of a block (8), and a cover (4) is provided on each protruding tube ), the block at the lower part of the raised tube is provided with an inner light wall (21), and the lower part of the inner light wall is provided with an internal thread (20) on the lower surface of the block; the middle part of the ring (10) is provided with an external thread ( 14), the ring on the upper part of the external thread is provided with a shrinking outer light wall (15), and the upper mouth of the plastic bag (11) penetrated by the ring inner mouth (28) of the ring is turned outward (29) and then pressed On the upper mouth of the circular ring, the fixed snap ring (18) clamped on the upper mouth of the circular ring clamps the place near the upper mouth of the plastic bag, and the external thread of the circular ring is connected to the internal thread of the block; the present invention utilizes the fixed snap ring to The mouth of the plastic bag is fixed, and it can be conveniently used every time you take it out and open the cover, which ensures that the plastic bag will not be damaged and is conducive to the safe storage of ingredients.

An ice cream pattern-making apparatus comprises a jam charging basket, a liquid pump, a jam-discharging valve, and a pattern-making device; jam-transporting pipes are connected between the jam charging basket and the liquid pump, the liquid pump and the jam-discharging valve, and the liquid pump and the pattern-making device; the pattern-making device comprises a shaft sleeve of the pattern-making device and a shaft core of the pattern-making device which is mounted inside the shaft sleeve of the pattern-making device; two seal rings are disposed between the shaft sleeve of the pattern-makingdevice and the shaft core of the pattern-making device; the shaft sleeve of the pattern-making device has a charging nozzle connected with the jam-transporting pipe; the shaft sleeve of the pattern-making device is connected with a discharge port of the ice cream machine; a radial charging nozzle and an axial extruding hole are disposed on the shaft core of the pattern-making device. The apparatus is characterized in that a pressure-reducing valve is disposed on the jam-transporting pipe between the jam charging basket and the liquid pump; a jam circulating groove is disposed on the external wall of the shaft core of the pattern-making device; the jam circulating groove is communicated with the internal mouth of the charging nozzle of the shaft sleeve of the pattern-making device; the external mouth of the radial charging nozzle is communicated with the jam circulating groove; and the internal mouth of the radial charging nozzle is communicated with the axial extruding hole.

The invention discloses an anchor lip lofting design method. By converting and projecting the first projection line of the anchor lip and the second projection line of the anchor chain barrel, the first intersecting line of the anchor lip on the water plane and the anchor chain are obtained. The second intersecting line of the shell on the outer plate, and then obtain the scribed line sample of the anchor lip and the opening sample of the anchor chain tube, and calculate the outer mouth line and The internal mouth line completes the stakeout process. This design method is simple and effective. The stakeout diagram is obtained quickly by converting the projection surface, and the stakeout accuracy is also improved.

The invention discloses a drainage device for postoperative anastomotic fistula and a negative pressure drainage device, which relate to the technical field of medical devices and include a dressing, a cavity drainage tube and an angiographic drainage tube. The dressing is used to fill the incision of a patient, and the dressing can absorb The patient's body fluid, the cavity drainage tube passes through the dressing along the thickness direction of the dressing, the cavity drainage tube points to the anastomotic sinus, the angiographic drainage tube runs through the cavity drainage tube along the length direction of the cavity drainage tube, the angiographic drainage tube and the cavity One end of the drainage tube extending out of the patient's body can be communicated with the negative pressure device. In the present invention, the cavity drainage tube can guide the angiographic drainage tube, so that the angiographic drainage tube can extend into the outer orifice of the anastomotic sinus, which is convenient for angiography of the anastomotic sinus to confirm the structure of the sinus. When it extends into the internal opening of the anastomotic sinus, the contrast agent is pushed again and angiography is performed to confirm whether the contrast drainage tube is extended in place, so that the anastomotic leakage can be accurately drained and the anastomotic leakage can be quickly cured.

A horn anoscope with side hole is composed of an anoscoper with a handle connected to its external surface and a cock with a semi-spherical front end matched with the internal mouth of anoscope and inserted in said anoscoper. A semi-circular observing disc is linked to the middle of said cock. Its advantages are correct location, easy operation, and convenient observation.

The invention includes systems and methods using certain embodiments of a medical device to facilitate child birth through cervical ripening. Certain embodiments of the invention may include an elongated body having a proximal end and a distal end where the distal end terminates in a tip. The tip may be covered by a balloon disposed adjacent to the tip, and an expandable member may be positioned adjacent to the balloon such that when expanded, the expandable member may at least partially cover the balloon, and accommodate the user's finger to guide and place the device through the cervix and into the internal os, where, upon expansion of the balloon, pressure is applied to the internal os to facilitate cervical ripening and child birth.