56results about How to "Solve seal failure" patented technology

The invention discloses a pressure self-adaptive mechanical seal device, which relates to the field of mechanical seal devices, and comprises a static ring assembly fixedly connected to the static part of the seal and a dynamic ring assembly that can rotate with the shaft. Discontinuous cavities uniformly distributed in the circumferential direction are processed on the radial side. There are through holes on the lower surface of each cavity. The through holes communicate with the low pressure area. The discontinuous cavities are sealed by sealing rings. According to different sealing conditions, the different The continuous cavity can adopt different structural forms to achieve the best sealing effect. This sealing device well solves the problem of seal end face wearing and tearing failure caused by sealing pressure fluctuations. Its notable feature is that it can adapt to sealing conditions with a wide pressure range. As the pressure of the sealed fluid increases, the bearing capacity of the seal will increase. The enhancement is adaptive.

Grinding roller sealed air duct system includes fan, external pipe lines, soft connectivity, pipe lines fixed on pressure framework, upper roller seat, sealing roller, lower roller seat, grinding roller frame and grinding roller; its characteristics is said upper roller seat, sealing roller and lower roller seat combine sealed air duct, the sealed air duct is connected with air holes of grinding roller frame. The fan transmits positive pressure wind into the sealed air duct combine by upper roller seat, sealing roller and lower roller seat through external pipe lines and pipe lines fixed on pressure framework, and blowout wind through the air holes of grinding roller frame and the chine between grinding roller frame, grinding roller and grinding roller frame driving rotating components.The invention solves the problem of grinding roller seal failure because of vibration joint wear, while solves the problems of the grinding leakage of loop pipe line and grinding roller frame air-supply line because of long-time mill vibration and dust wind erosion, or rigidity injury even breach lead by mill shape vibration. The invention not only saves a lot of investment, reduces costs, and is a highly reliable grinding roller sealed air duct system.

The invention discloses a sealing structure of a joint of insulating blocks of a B type enclosure system. The sealing structure comprises a plurality of first insulating blocks fixed on the wall of acargo hold; a first gap filled with a first thermal-insulation buffer material is formed between the lower sides of every two adjacent first insulating blocks; and a second gap for arranging a first aluminum foil, a second insulating block, a second thermal-insulation buffer material, and a sealing elastic material is formed between the upper sides of every two adjacent first insulating blocks; the first aluminum foils are arranged on the first thermal-insulation buffer materials; the second insulating blocks are arranged on the first aluminum foils; the space between the second insulating blocks and the first insulating blocks is filled with second thermal-insulation buffer materials; the sealing elastic materials are arranged on the surfaces of the second insulating blocks; and second aluminum foils are arranged on the surfaces of the sealing elastic materials. Therefore, a problem of the sealing failure of the insulating block joint due to the thermal expansion and cold contractionat the independent cabin wall is solved effectively; and the extrusion between the insulating blocks is prevented and the sealing performance of the joint is not damaged.

The invention discloses a magnetic liquid sealing device. The magnetic liquid sealing device comprises a shell, a shaft, a first shaft sleeve, a plurality of pole shoes and a permanent magnet. The shaft rotatably penetrates through the shell, the first shaft sleeve is made of a magnetic conductive material, the size of the first shaft sleeve can be changed along with the change of the temperaturein the shell, the first shaft sleeve is arranged on the shaft in a sleeving manner, the pole shoes are arranged on the shaft and the first shaft sleeve in a sleeving manner, and a plurality of pole teeth arranged at intervals in the axial direction of the shaft are arranged on the inner circumferential surfaces of the pole shoes; the shaft and one part of the pole teeth are arranged at intervals in the radial direction of the shaft to form a first interval, the first shaft sleeve and the other part of the pole teeth are arranged at intervals in the radial direction of the shaft to form a second interval, magnetic liquid with small base carrier liquid molecular weight is arranged in the first interval, and magnetic liquid with large base carrier liquid molecular weight is arranged in the second interval; and the permanent magnet is arranged in the shell and sleeves the shaft. The magnetic liquid sealing device can effectively solve the problems of large low-temperature starting torque and sealing failure caused by volatilization of the magnetic liquid-based carrier liquid at high temperature.

The invention discloses a sealing structure of a joint of insulating blocks of a B type enclosure system. The sealing structure comprises a plurality of first insulating blocks fixed on the wall of acargo hold; a first gap filled with a first thermal-insulation buffer material is formed between the lower sides of every two adjacent first insulating blocks; and a second gap for arranging a first aluminum foil, a second insulating block, a second thermal-insulation buffer material, and a sealing elastic material is formed between the upper sides of every two adjacent first insulating blocks; the first aluminum foils are arranged on the first thermal-insulation buffer materials; the second insulating blocks are arranged on the first aluminum foils; the space between the second insulating blocks and the first insulating blocks is filled with second thermal-insulation buffer materials; the sealing elastic materials are arranged on the surfaces of the second insulating blocks; and second aluminum foils are arranged on the surfaces of the sealing elastic materials. Therefore, a problem of the sealing failure of the insulating block joint due to the thermal expansion and cold contractionat the independent cabin wall is solved effectively; and the extrusion between the insulating blocks is prevented and the sealing performance of the joint is not damaged.

The invention discloses a sealing structure of a joint of insulating blocks of a B type enclosure system. The sealing structure comprises a plurality of first insulating blocks fixed on the wall of acargo hold; a first gap filled with a first thermal-insulation buffer material is formed between the lower sides of every two adjacent first insulating blocks; and a second gap for arranging a first aluminum foil, a second insulating block, a second thermal-insulation buffer material, and a sealing elastic material is formed between the upper sides of every two adjacent first insulating blocks; the first aluminum foils are arranged on the first thermal-insulation buffer materials; the second insulating blocks are arranged on the first aluminum foils; the space between the second insulating blocks and the first insulating blocks is filled with second thermal-insulation buffer materials; the sealing elastic materials are arranged on the surfaces of the second insulating blocks; and second aluminum foils are arranged on the surfaces of the sealing elastic materials. Therefore, a problem of the sealing failure of the insulating block joint due to the thermal expansion and cold contractionat the independent cabin wall is solved effectively; and the extrusion between the insulating blocks is prevented and the sealing performance of the joint is not damaged.

The invention discloses a method for sealing the joint of insulating blocks of a B type enclosure system. The method comprises the following steps: installing a plurality of first insulating blocks attarget positions of a cargo bulkhead; filling a gap between every two adjacent first insulating blocks with a first thermal-insulation buffer material; covering the first thermal-insulation buffer materials with first aluminum foils; placing second insulating blocks on the first aluminum foils and fixing the second insulating blocks with the first insulating blocks; filling gaps among the secondinsulating blocks and the first insulating blocks with second thermal-insulation buffer materials; fixing sealing elastic materials on the surfaces of the second insulating blocks; and pasting secondaluminum foils on the sealing elastic materials. The method is operated simply and installation becomes convenient. A problem of the sealing failure of the insulating block joint due to the thermal expansion and cold contraction at the independent cabin wall is solved effectively; and the extrusion between the insulating blocks is prevented and the sealing performance of the joint is not damaged.

The invention discloses a water conservancy reaming system which comprises a water source, a connecting pipe, a water pump, a water supply connector, a drill bit and a drill rod, wherein the drill bit and the water supply connector are mounted at the two ends of the drill rod; the water supply connector is connected to the outlet of the water pump; the water inlet of the water pump is communicated with the water source through the connecting pipe. According to the water conservancy reaming system, the performance of the whole system is improved by improving parts in the integral structure, and the technical problems caused by specific parts are solved.

The invention relates to a container packaging type mechanical seal for an alkali pump, in particular to the container packaging type mechanical seal for the corrosion-resistant alkali pump. The container packaging type mechanical seal for the corrosion-resistant alkali pump comprises a shaft sleeve, a gland, a medium end seal and an atmosphere end water seal, wherein the medium end seal is located on the inner side of the gland, and the atmosphere end water seal is located on the outer side of the gland. An impeller is arranged at the end of a pump shaft through an impeller hub, the side, close to the impeller, of the shaft sleeve is provided with a step type structure connected with the shaft sleeve through an inclined face, the side, close to the impeller, of the step type structure isprovided with an annular groove with the opening facing the pump shaft, the step type structure is provided with an axial positioning hole, and the side, away from the impeller, of the shaft sleeve isprovided with a convex structure and a radial positioning hole. Compared with the prior art, the container packaging type mechanical seal for the corrosion-resistant alkali pump has the following advantages that the container packaging type mechanical seal can be used for conveying a medium with the medium solid content being 40% after being installed in the alkali pump, the shaft sleeve structure is reasonably designed, the container packaging type mechanical seal is used for conveying the concentrated alkali medium, the sealing effect is goof, use is safe and environmentally friendly, the environmental protection requirements of industrial production are met, the service life is long, the treatment cost of harmful gas is saved, and economic benefits are remarkable.

The invention discloses a ball seat, and belongs to the technical field of oilfield flooding. The ball seat comprises a tubular upper connector, an outer barrel, a core pipe, a self-locking shear pin, a clamp spring, a check ring and a lower connector, wherein the upper connector and the lower connector are both connected with the outer barrel; an inner cavity of the lower connector is provided with a first inclined surface; an inner cavity of the core pipe is provided with a second inclined surface and the core pipe is connected with the outer barrel through the self-locking shear pin; the core pipe is provided with a first clamp spring groove, and the clamp spring is arranged in the first clamp spring groove; an inner cavity of the check ring is provided with a third inclined surface and shaped like a calabash formed by overlapping two communicating cylindrical cavities with the same diameter, the width of the overlapping surface is smaller than the diameter of a thrown ball, and the diameter of the cylindrical cavities is larger than the diameter of the thrown ball; a step is arranged on the wall of an inner cavity of the outer barrel; the upper end of the check ring and the step are coplanar, and the lower end of the check ring and the upper end of the lower connector are coplanar; and a second clamp spring groove is formed in the outer barrel, the self-locking shear pin is shorn off, the core pipe moves downwards, and the clamp spring is clamped in the second clamp spring groove. By means of the ball seat, the problems that the thrown ball is difficult to throw and returns to cause sealing failure of a water injection pipe column are solved, and the effect of effectively sealing the water injection pipe column is realized.

The invention discloses a gravity center adjustment device for an underwater submersible vehicle. The gravity center adjustment device for the underwater submersible vehicle comprises a sliding frame,a pressure proof cabin and a driving device. The pressure proof cabin is slidably connected to the sliding frame, and the driving device drives the pressure proof cabin to slide on the sliding frameand locks a position of the pressure proof cabin on the sliding frame. By integrally moving the pressure proof cabin, the moving quality of is large, the pressure proof cabin is not limited by internal space of the pressure proof cabin, the gravity center is changed and displacement is larger, the effect is obvious, internal collision of the pressure proof cabin cannot be caused, devices and a pressure proof cabin cover cannot be damaged, more reliability and safety are achieved, the structure is simple, and the problem of disabled invalid sealing of the pressure proof cabin due to the fact that an existing gravity center adjustment device needs to increase pressure proof cabin space during adjusting a battery pack in the pressure proof cabin and is prone to ejecting a sealing cover is solved.

The invention relates to the technical field of packaging equipment, in particular to a bag clamping and moving device and a bulk fine dried noodle packaging machine. The bag clamping and moving device comprises a base, two clamping mechanisms and a deduction mechanism, the two clamping mechanisms are both installed on the base, and the two clamping mechanisms are oppositely arranged and used forclamping the two ends, in the length direction, of a bag opening of a packaging bag after fine dried noodles are packaged in the packaging bag. The deduction mechanism is mounted on the base and comprises a deduction piece, and the deduction piece can be relatively close to and far away from the two clamping mechanisms in the direction perpendicular to the length direction of the bag opening of the packaging bag; the deduction piece is provided with a deduction part, and the deduction part corresponds to the upper side or the lower side of the portion, clamped by the clamping mechanisms, of the packaging bag so that the packaging bag can be pushed laterally when the deduction piece and the clamping mechanisms get close to each other. The bag clamping and moving device is used for solving the problem that in the prior art, when bulk fine dried noodles are packaged, part of the fine dried noodles are possibly clamped at a sealing opening of the packaging bag, and sealing of the packagingbag fails.

The invention discloses a floating sealing pair which comprises two floating sealing rings which are oppositely arranged; a bright belt is arranged between the opposite end surfaces of the two floating sealing rings, namely a contact type wear-resistant sealing ring surface; and the inner diameter of the bright belt is equal to the nominal inner diameter of each floating sealing ring. According tothe technical scheme of the invention, the problems that the service life of a bright belt of an existing floating sealing pair is short, and in addition, external pollutants, such as muddy water andsandy soil, easily invade into a sealing system, so that stable running of lubrication and sealing oil films is not facilitated, and sealing failure of the floating sealing pair is accelerated can besolved.

The invention discloses a magnetic coupling type dry gas sealing structure, which comprises a shell, a rotor, a moving ring assembly capable of rotating along with the rotor and a pushing static assembly matched with the moving ring assembly; the moving ring assembly comprises a moving ring, and the pushing static assembly comprises a static ring seat and a static ring located in the static ring seat; a plurality of first permanent magnets which are mutually repellent in magnetism are arranged between the outer diameter of the static ring and the inner diameter of the static ring seat, and a plurality of second permanent magnets which are mutually repellent in magnetism are arranged between one end, far away from the direction of the moving ring, of the static ring in the axial direction and the static ring seat; and the first permanent magnets are used for applying inward thrust to the static ring in the radial direction, and the second permanent magnets are used for applying inward thrust to the static ring in the axial direction. The magnetic coupling type dry gas sealing structure provided by the invention is used for solving the problems that in the prior art, a sealing interface of a large-shaft-diameter dry gas sealing device is collided and abraded under the three-high working conditions of high pressure, high temperature and high speed, sealing fails and the like, the dry gas sealing device can be suitable for the field of large-shaft-diameter machines, and the sealing reliability is improved.

The invention relates to an integrated seal structure for the high-temperature wear environment. The integrated seal structure for the high-temperature wear environment is characterized by comprisingan outer seal, an inner seal, a left support and a right support, wherein the left support and the right support are arranged oppositely; the outer seal is fixed onto the left support; the inner sealis fixed onto the right support; the outer seal is an integrated 'J'-shaped plate; the outer seal and the inner seal form a labyrinth seal; a surfacing wear-resistant layer is arranged on the outer surface of the bending part of the outer seal; and a surfacing wear-resistant layer is arranged on the surface, opposite to the bending part, of the inner seal. According to the integrated seal structure for the high-temperature wear environment provided by the invention, a sealing effect is greatly improved; and through the integrated seal structure, the integrality during the manufacturing of a sealing strip is ensured, the wear resistance of the sealing strip is further ensured, and the problem of seal failure caused by wear of a grate cooler during the use process and edge warping and falling off of a fillet weld wear-resistant plate is solved once for all.