38results about How to "Improve sealing accuracy" patented technology

Disclosed is a machining method for a rolling bearing with a ring precisely shaped by hard finishing. The machining method is characterized in that an inner ring and an outer ring of the bearing are integrally precisely shaped by hard finishing or the key surface of a ring part is precisely shaped by hard finishing; the key surface comprises raceways, raceway flanges, raceway oil grooves, seal grooves, ring flanges, grooved raceway edge chamfers and the like; precise shaping by hard finishing takes the place of grinding (such as the raceways) shaping and shaping by soft finishing (such as the sealing grooves), so that technical and quality problems of limited shape design of a raceway section, grinding badness even burn injuries and the like are solved; the technical and quality problems of low machining precision, heat treatment distortion and the like existing in shaping surfaces of the sealing grooves, the grooved raceway edge chamfers and the like by soft finishing are solved by precise hard finishing, so that the surfaces of the ring can be designed according to the operating condition and can be shaped precisely in a quite high mode, and the key surface of the ring can be controlled in shape and performance, and designing and manufacturing of the high-performance rolling bearing high in sealability and reliability and the like are of great practical engineering significance.

The invention relates to an electrical connector and a manufacturing method thereof. The electrical connector comprises a terminal, an intermediate shield sheet, an insulating body and a metal shell for containing the insulating body, the terminal comprises a first terminal set and a second terminal set, the intermediate shield sheet is arranged between the first terminal set and the second terminal set, and the first terminal set, the second terminal set and the intermediate shield sheet together with the insulating body are subjected to integrated injection molding; due to the design, the manufacturing process of the electrical connector is simple and the structural strength is high which are conducive to reducing the production cost.

The invention provides an eccentric ball valve. The eccentric ball valve comprises a valve body, a valve cover, a valve ball and a valve seat; the valve body is provided with a middle cavity and a first fluid channel communicating with the middle cavity; the valve cover is detachably connected with the valve body and is provided with a second fluid channel; after the valve cover and the valve bodyare connected, the second fluid channel communicates with the middle cavity; the valve ball is rotationally installed inside the middle cavity through an operation mechanism and is provided with a valve ball sealing face; the valve seat is installed on the valve cover and is provided with a valve seat sealing face capable of extruding the valve ball sealing face to seal the second fluid channel;and the valve seat is installed on the valve cover through an adjustable installing structure in a manner of being capable of finely moving, under driving of the operation mechanism, the valve ball rotates to enable the valve ball sealing face and the valve seat sealing face to be in extrusion contact gradually, the valve seat can finely move, and even-pressure sealing can be achieved between thevalve ball sealing face and the valve seat sealing face. By means of the eccentric ball valve, continuous abrasion of the valve ball and the valve seat can be avoided, and the good sealing performanceis achieved.

The invention discloses a butterfly valve with an inflation seal valve plate, belongs to the technical field of butterfly valves, and aims to provide a butterfly valve with a good seal effect and small sealing and opening resistance. According to a technical scheme, the valve plate of the butterfly valve consists of an upper ball panel, a lower ball panel, an elastic ring and a seal holder ring; radii of curvature of the upper and lower ball panels are positioned on the same side, and ball centers are opposite in the same line on the same side; the elastic ring and the seal holder ring are in parallel encircling connection between circumferences of the upper and lower ball panels; and an air source connector is communicated with a cavity formed among the upper ball panel, the lower ball panel, the elastic ring and the seal holder ring of the valve plate through air holes. A rigidity seal structure of the traditional butterfly valve is changed, an inflation hollow valve plate with a double-layer structure is adopted, and the whole working process of the valve is qualitatively changed. The seal accuracy of the butterfly valve can reach a high level. The butterfly valve is skillful in design and novel in style, is an innovation for the seal design of the butterfly valve, achieves unexpected good effect and deserves promotion and application.

An automatic grinding machine for the sealing surface of a floating oil seal comprises a working table, a grinding disc is arranged on the surface of the working table, and a mat layer is protruded on the surface of the grinding disc. The beneficial effects of the present invention are: the automatic grinding machine for the sealing surface of the floating oil seal of the present invention has a reasonable structure and is convenient to use, and the hemp surface layer made of linen can grind and polish the sealing surface of the floating oil seal, thereby improving the plane precision of the sealing surface of the floating oil seal , can also reduce the extrusion caused by grinding powder on the sealing surface of the floating oil seal, prevent the sealing surface of the floating oil seal from being concave inward, improve the plane accuracy of the sealing surface of the floating oil seal, improve the sealing accuracy of the floating oil seal, and realize the sealing surface of the floating oil seal. Automatic processing improves work efficiency and production efficiency, and can meet the use requirements of floating oil seals of any size. It has a wide range of applications, good practical application effects, and is conducive to popularization.

A gas cell sealing method includes bonding step in which a bonding portion of a gas cell main body having an opening and a lid for closing the opening where a sealant for bonding the gas cell main body and the lid is provided is heated by converging a laser beam from a laser light source through an optical element, and the lid is bonded to the gas cell main body by applying pressure in a direction that presses the lid against the gas cell main body, the pressure being applied while the laser beam is being converged to the bonding portion.

The invention provides a flow limiting valve for an industrial water room with self-cleaning function, which includes a valve body; a sealing device and a flow limiting mechanism are installed inside the valve body, and the flow limiting mechanism is located on the left side of the sealing device; An adjustment device is installed on the top of the valve body, and a pushing part is installed inside the adjustment device, and a limit part is installed on the top of the adjustment device; the cleaning device is installed on the right side of the valve body, and a collection device is installed at the bottom of the cleaning device , and the inside of the cleaning device is equipped with a driving mechanism. In the present invention, the sealing block is fixedly connected with the valve body, and two sealing rings are fixedly installed inside the sealing block, thereby improving the sealing effect between the sealing block and the moving block. Because a spring is fixedly installed between the limit plate and the moving block, the moving block moves to the right under the action of the spring when the present invention is closed, and the cross section of the moving block is a trapezoidal structure, which is then sealed under the action of the spring and water flow pressure. Tight fit between blocks and moving blocks.

The invention provides a strong impact corrosion-resistant butterfly valve with high flexibility and a use method thereof. The strong impact corrosion-resistant butterfly valve comprises a valve body,wherein a drive mechanism is arranged at the surface of the valve body; an outer casing is arranged at the bottom end of the drive mechanism; a first gearbox is arranged at one side of the drive mechanism, a first hand wheel is arranged at one end of the first gearbox, a first butterfly plate is arranged in the outer casing, and a fixed pipe is arranged in the first butterfly plate; the first gearbox is connected with the top end of the fixed pipe through a gear; a second drive shaft is arranged in the fixed pipe; a second hand wheel is arranged at the top end of the second drive shaft; a second gearbox is arranged at the bottom end of the second drive shaft; a first bevel gear is arranged at the outer side of the second drive shaft. The strong impact corrosion-resistant butterfly valve with high flexibility has the advantages that by arranging multiple second butterfly plates, the thickness of the first butterfly plate is at least 6cm, and the valve body is closed by two steps, so that the maximum flow drag of valve close is reduced, and the flexibility of the valve body is improved; the strong impact corrosion-resistant ability of the butterfly valve is improved, so that the application range of the butterfly valve is expanded, and the market competitiveness is improved.