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

The invention relates to a method for manufacturing and sealing an exhaust port in vacuum glass, which comprises the following steps: directly carrying out layer-by-layer three-dimensional carving in plate glass by using laser so as to form the exhaust port, carrying out three-dimensional carving on a glass block by using laser so as to form a glass sealing plug, laying sealant between the plug body and the exhaust port, then welding and sealing the plug body and the exhaust port by using laser. The invention also provides a system for manufacturing and sealing the exhaust port in the vacuum glass, which comprises a laser carving device, a laser welding device, a vacuum chuck and a glass sealing plug installing device, wherein the laser carving device comprises a laser device, a laser power controller, a first galvanometer system and a computer; the laser welding device comprises a laser system and a second galvanometer system; the vacuum chuck is connected with a vacuum pump through a connecting tube; a magnet coil is arranged on the top of the vacuum chuck; and the glass sealing plug installing device is composed of a magnet driving device. The sealing exhaust port in vacuum glass of the invention has the advantages of high sealing accuracy and no surface embossment so as to improve vacuum sealing performance and safety performance, and is easy for on-line implementation so as to improve work efficiency.

The invention relates to a hard alloy composite sealing structure and a preparing technology thereof. The hard alloy composite sealing structure comprises a valve seat machining part and a sealing ring machining part. In the valve seat machining part, a casting is fixedly arranged on a valve seat machining clamp inclining by 4-15 degrees, and after the sealing face thickness of 4-8 mm is reserved, a sealing face of the valve seat is roughly turned, and surfacing of a first hard alloy layer is conducted on the sealing face of the valve seat; and in the sealing ring machining part, a sealing ring blank is arranged on a sealing ring machining clamp of a lathe, and after the sealing face of the sealing ring is finely turned, surfacing of a second hard alloy layer is conducted on the sealing face of the sealing ring. According to the hard alloy composite sealing structure and the preparing technology thereof, the machining technology cost is low, the sealing precision is high, the product can achieve zero friction, zero leakage and both-way pressure bearing and achieves real high performance, a sealing pair is all metal, and once after closing is conducted in place, sealing is very reliable, and the application temperature range is wide.

A fluid infusion multi-times multi-face sealing control device comprises a drop syringe (1) and is characterized in that a soft sealing body (3) is arranged in a drip chamber (2) of the drop syringe (1). The device has the advantages that after injection of injection liquid is about to finish, the lower outer surface of a thin-wall soft bag seals the inner wall of a water outlet of the drip chamber, the injection liquid in the thin-wall soft bag flows out from a water inlet and outlet of the soft sealing body under the action of gravity of a floating body, the thin-wall soft bag carries out secondary two-face sealing on the end face of the water outlet of the drip chamber, sealing precision is high, almost no air or liquid flows into a transparent pipe outside a liquid outlet of the drip chamber, after the liquid is replaced, the liquid flows into the drip chamber again, the soft sealing body can float easily under the action of buoyancy, and therefore the liquid can be injected again. The control device is simple in structure, convenient to operate and firm in sealing, and meanwhile the soft sealing body can float easily.

The invention discloses an organic light-emitting display panel and a display device. A protective layer is generally made of UV glue. Because an organic film clearance zone is arranged between an outermost retaining wall and a protective layer, fluidity of material of the protective layer expands to a clearance area of an organic film, resulting in unflattening and drop in thickness when a bending area is coated with the material of the protective layer. At least one independent blocking structure is arranged between the retaining wall on the outermost side and the protective layer; in this way, when the bending area is coated with the material of the protective layer; the barrier structure closest to the protective layer can reduce the flow expansion of the protective layer material towards the display area. Therefore, it can be guaranteed that the protective layer is flat, the phenomenon that the thickness of the protective layer is suddenly reduced is avoided, the organic light-emitting display panel can improve the adhesive sealing precision of the protective layer, and the mechanical strength of the flexible display panel in the bending process is enhanced.

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.

The invention provides a flow limiting valve with a cleaning function for an industrial water room. The flow limiting valve comprises a valve body; a sealing device and a flow limiting mechanism are installed in the valve body, and the flow limiting mechanism is located on the left side of the sealing device; an adjusting device is mounted at the top of the valve body, a pushing part is mounted in the adjusting device, and a limiting part is mounted at the top of the adjusting device; and the cleaning device is installed on the right side of the valve body, a collecting device is installed at the bottom of the cleaning device, and a driving mechanism is installed in the cleaning device. A sealing block is fixedly connected with the valve body, and two sealing rings are fixedly installed in the sealing block, so that the sealing effect between the sealing block and a moving block is improved; and a spring is fixedly installed between a limiting disc and the moving block, so that the moving block moves rightwards under the action of the spring when the valve is closed, the section of the moving block is of a trapezoidal structure, and the sealing block and the moving block are tightly attached under the action of the spring and water flow pressure.

The invention relates to a method for designing a linear sealing structure of box type parts provided with narrow (sealed) planes with complex shapes. When a standard O ring sealing structure is used for performing sealing on a narrow sealed plane with a complex shape, if the touched sealed plane has the complex shape and is too narrow, the sealing ring replacement or that the standard sealing groove width is bigger than that of the sealed plane is easily caused, so that the sealing cannot be formed. The invention develops a method for realizing sealing on the narrow sealed plane with the complex shape, which is different from the method for standard-sized O rings and grooves. Practices show that the linear sealing structure has good effect when the linear sealing structure is applied to the narrow sealed plane with the complex shape. The design method mainly comprises: firstly, the design of the width B of a sealing groove, which is to make B equal to 1.035 to 1.045 times of d, wherein d is the diameter of the cross section of an O-shaped sealing ring, and the depth t of the sealing groove is kept unchanged and still adopts the standard depth; and secondly, the design of the actual length L of the O-shaped sealing ring, which is to make L equal to 0.990 to 0.089 times of L0, wherein L0 is the theoretical length of the O-shaped sealing ring.

The invention provides an efficient oil well pump for a horizontal well. The efficient oil well pump comprises an upper joint, a pump cylinder, plunger center poles, plungers, center pole centering devices, a pin oil bleeder, a fixing valve assembly and a joint ball seat. The efficient oil well pump is characterized in that the plungers are two-stage type or three-stage type or four-stage type hollow plungers, the lower end face of each plunger is provided with a traveling valve arc-shaped valve seat, the center of each plunger is provided with one plunger center pole, the upper end of each plunger center pole is provided with one center pole centering device, the lower end of each plunger center pole is provided with a traveling valve arc-shaped valve element, and each traveling valve arc-shaped valve element is in threaded connection with the corresponding centering device and is in seal fit with the corresponding traveling valve arc-shaped valve seat, so that a traveling valve forced opening and forced closing mechanism is formed; each traveling valve arc-shaped valve element drives the corresponding plunger to conduct vertical linkage in the pump cylinder under the effect of vertical reciprocating movement of the corresponding plunger center pole, so that a plunger oil inlet and exhaust assembly is formed. According to the efficient oil well pump, the plunger oil inlet and exhaust assembly and the traveling valve forced opening and forced closing mechanism are adopted, so that the sealing effect is ensured, the pump efficiency is remarkably improved, and the service life of the pump is prolonged.

The invention discloses a high-pressure regulation valve and a pressure detection device. The high-pressure regulation valve comprises a first joint, a transverse first valve cavity, a second joint, a transverse second valve cavity, a centre and a power source, wherein the first and second joints are communicated with the first and second valve cavities respectively; the first valve cavity and the second valve cavity are in butt joint; a conical cavity is arranged at the butt joint of the first valve cavity; the cavity wall of the conical cavity is a conical surface; the conical surface is matched with a sphere; the power source drives the centre to move transversely and linearly through a thread pair; and the centre drives the sphere to move transversely and linearly. The pressure regulation valve converts circular motion into linear motion by use of the lead screw principle; the centre pushes open the sphere to control blockage; the fluid flow is controlled by use of the size of an opening/closing gap of the sphere so as to control the pressure range of the system; and thus, the pressure regulation valve not only realizes a complete blockage function, but also can control the pressure of the system and loop.

The invention discloses a mechanical seal structure for a narrow seal chamber. A dynamic ring assembly of the device comprises a ring seat, a dynamic ring, a base ring and a welded corrugated pipe, wherein the dynamic ring and the base ring are embedded on the ring seat; the welded corrugated pipe is welded between the ring seat and the base ring; a boss is arranged on the external wall of the right end of a shaft sleeve; a sunken part is formed on the left end of the boss; an internal sunken platform with a bulge is arranged at the right end of the base ring; the bulge is engaged with the sunken part, so that the base ring can be linked with the shaft sleeve; a clamp spring propped against the right end of the shaft sleeve is arranged at the right end of the base ring; a static ring is arranged on the internal wall of the seal gland by a hinge pin; a transmission ring is arranged at the left end of the shaft sleeve in a sleeving way; the transmission ring and the shaft sleeve are fixed on a pump shaft by bolts; a plurality of F-shaped positioning blocks are uniformly distributed on the sidewall of the transmission ring; an annular groove is formed on the left end of the sealing gland; and one end of each positioning block is fixed on the sidewall of the transmission ring while the other end of each positioning block is blocked into the annular groove, so that the sealing gland and the transmission ring can be axially fixed and rotated relative to each other; and the sealing gland, the shaft sleeve, the dynamic ring assembly and the static ring form an integrated structure.