41results about How to "Realize dynamic sealing" patented technology

The invention provides a sealing device and a bearing box system. The device is installed in a bearing cavity which is provided with a shaft, a bearing and a shaft sleeve, wherein the bearing and theshaft sleeve are arranged outside the shaft in a sleeving mode, the shaft sleeve abuts against the end surface of the bearing, and the shaft sleeve is made of a magnetic material; the sealing device comprises a first magnetic conductor, a permanent magnet and a second magnetic conductor; the first magnetic conductor, the permanent magnet and the second magnetic conductor are arranged outside the shaft sleeve in a sleeving mode, the first magnetic conductor abuts against the end surface, the permanent magnet is clamped between the first magnetic conductor and the second magnetic conductor, andthe permanent magnet, the first magnetic conductor, the shaft sleeve and the second magnetic conductor are matched to form a closed magnetic line; and gaps are formed between the outer wall of the shaft sleeve and the inner wall of the first magnetic conductor and between the outer wall of the shaft sleeve and the inner wall of the second magnetic conductor, and pole teeth are arranged on the inner wall of the first magnetic conductor and the inner wall of the second magnetic conductor, and the gaps and the pole teeth are all filled with magnetic fluid. The embodiment of the sealing device caneffectively ensure the sealing effect on the bearing cavity, thereby avoiding environmental pollution and harm to human health.

The present invention related to a fluent metal delivery pump which includes a pump case, a drive capstan and blade, characterized in that the pump case is a upright cylinder; the drive capstan is a screw axis mounted inside the cylinder; and the blade is helical blade surrounding the screw axis; the screw axis is supported by a gear bearing that fixed above the cylinder; and a drive capstan is supported by the gear bearing seat that coaxially connected with the cylinder. sealing blade wheel is provided in the invention which can rotate when driven by the drive capstan and generate centrifugal pull to form some certain negative-pressure inside the pump case, realize dynamic sealing of the pump, prevent cadmium liquor from overbrimming from the gear bearing seat. A structure that utilizing part above the liquid level of the cylinder clad the insulating course is adopted in the invention, so that cadmium liquor remained inside the pump will not cooled quickly after pump stopped which can prevent the remained cadmium liquor from quick crystallization and make mechanical damage to each components, and can prolong service life of the pump.

The invention discloses a powder spraying chamber with automatic gun collection beam inlet-outlet groove openings using dynamic sealing structures. The powder spraying chamber comprises a spraying chamber main body and a powder spraying system, wherein the powder spraying system comprises lifting machines, automatic gun collection beams and spraying guns; the automatic gun collection beams are connected with the lifting machines through connection rods; inlet-outlet groove openings are formed in the side wall of the spraying chamber main body and are used for providing space needed for up-and-down reciprocating motion of the connection rods; inlet-outlet groove opening sealing devices are arranged on the inlet-outlet groove openings; the inlet-outlet groove opening sealing devices are flexible sealing tapes using dynamic sealing structure manners; through holes for penetration of the connection rods are formed in the flexible sealing tapes; the flexible sealing tapes are used for sealing the inlet-outlet groove openings in the side wall of the spraying chamber main body and an air flowing path outside the spraying chamber main body; the flexible sealing tapes are capable of movingalong the automatic gun collection beams and achieving dynamic sealing. The powder spraying chamber is excellent in sealing effect, low in possibility of powder leakage and relatively convenient to clean.

The invention provides a sealing member used for sealing two planes or cambered surfaces of a component needing to be sealed. The sealing member at least comprises a protrusion, wherein the length of the protrusion is equal to the length of the planes or the cambered surfaces needing to be sealed. The invention provides the sealing member used for ensuring the sealing effect of the two planes or the cambered surfaces of the member needing to be sealed.

The invention relates to a large-diameter sealing element, which comprises two or more than two bulges. The other side, opposite to each bulge, of the sealing element is in a rectangular shape; the length of each bulge is the length of each rectangular shape and is equal to the length to be sealed of a plane or the length to be sealed of an arc surface; a connecting part with a first preset widthis arranged between each two adjacent bulges; a groove is formed in a lower part corresponding to each bulge of the sealing element; or the sealing element is provided with a cushion block under eachconnecting part; and the sealing piece and the cushion blocks as well as one or two sealed planes or arc surfaces or curve surfaces are fixedly installed through a mechanical installation way. The invention provides the sealing element used for ensuring a sealing effect between the planes or the arc surfaces of two parts requiring to be sealed.

The invention discloses a motive seal device for an expansion pipe. The motive seal device for the expansion pipe comprises a cylindrical connection outer sleeve (1), wherein a cylindrical sealing rubber core (2) is fixedly connected in the connection outer sleeve (1), the outer side wall of the sealing rubber core (2) is in sealed connection with the inner side wall of the connection outer sleeve (1), and a cavity (21) for inflating is formed in the sealing rubber core (2). The motive seal device for the expansion pipe can prevent foreign materials inside a well from entering an expansion construction tool, the expansion pipe and a suppressing oil pipe are annularly kept clean in the construction process, and therefore smooth proceeding of the expansion construction is ensured.

The invention discloses a dynamic sealing device of a high-pressure system. The device comprises a first end cover flange, a second end cover flange, a cavity flange, a second end cover flange, a connecting piece and a butt joint flange are sequentially installed in the same axial direction; a mounting cavity sealed and communicated is formed in the axial direction in the center of the first end cover flange, the cavity flange, the second end cover flange, the connecting piece and the butt joint flange; the inner diameters of the first end cover flange and the second end cover flange are the same, and Y-shaped sealing rings are installed on the inner walls of the first end cover flange and the second end cover flange; the inner diameter of the cavity flange is larger than the inner diameter of the first end cover flange, and a channel is formed in the side wall of the cavity flange. A high-pressure nitrogen barrier is formed between the high-pressure medium in the high-pressure industrial system and the atmosphere, and the reliability of dynamic sealing is improved; and high-temperature and high-pressure medium in an industrial device cannot leak into the atmosphere, so that a certain function part of the industrial device can be plugged and pulled under a high-pressure working condition, and an operation is carried out under a high-pressure operation working condition.

The invention discloses a loosing circle testing system and method based on a coupling effect of rock water in drill holes of soft rock. The loosing circle testing system comprises a hole sealing device, a grouting device, a water injection device, a testing device and a control device. The testing device comprises a telescopic rod body, a displayer, ultrasonic transmitters, ultrasonic receivers and a stand column used for supporting the telescopic rod body. The ultrasonic transmitters and the ultrasonic receivers are connected to the input end of the displayer through lines and connected to the control device through the output end of the displayer. Detecting rods are connected to the two ends of the telescopic rod body respectively. The heights of the two detecting rods are the same, and the two detecting rods are kept parallel. Each detecting rod is formed by sleeving a plurality of pipe bodies together. One ultrasonic transmitter and one ultrasonic receiver are installed on the head of each detecting rod respectively. The dynamic hole sealing device achieves synchronization of plugging cracks in the holes through grout and coupling of the rock water, and the problem that when top plate surrounding rock is tested, a large amount of water in the drill holes is lost in the testing process, and can not be supplemented in time is solved.

The invention belongs to the technical field of gas-solid separation of high-temperature pyrolysis gas, and particularly relates to an anti-coking cyclone separator capable of achieving dynamical material seal. The anti-coking cyclone separator comprises a feeding port, a barrel, a cone, a storage bin, a dipleg, a discharging controller, a central pipe, a weighing sensor, an electric control system and an arch breaking and flow aiding unblocking device, wherein the feeding port is tangentially connected with the barrel; the central pipe is arranged at the top of the barrel; the cone is connected with the barrel; the storage bin is welded to the cone; the dipleg is welded to the storage bin; the weighing sensor is placed under a lifting lug on the outer wall of the barrel and sends a weight signal to the electric control system. the electric control system sends a control signal to a discharging controller; the discharging controller has different opening degrees to control the falling speed of materials; and the arch breaking and flow aiding unblocking device is arranged on the outer wall of the storage bin. The requirement for an anaerobic or anoxic state is met through the material seal of the separator, meanwhile coking on the outer wall of the central pipe of the separator can be reduced, and the separator can operate efficiently, safely and stably for a long period under severe working conditions such as high temperature, high corrosion and strong abrasion.

The invention provides an abrasion system for simulating various motions of metal in a lead-bismuth alloy environment, and relates to the technical field of material surface motion abrasion testing. The system comprises a lead bismuth alloy environment simulation cavity, the lead bismuth alloy environment simulation cavity is provided with a first metal body and a second metal body which abut against each other, the first metal body is fixed through a clamping device, the clamping device is connected with a horizontal circumferential reciprocating motion mechanism, and the second metal body is connected with an axial reciprocating motion mechanism; the system can simulate the interaction of temperature, load and motion of a first metal body and a second metal body in a lead-bismuth environment, and research the rule of the influence of the interaction on the abradability of the first metal body and the second metal body. In addition, the invention further provides a method for simulating various motions of metal in the lead-bismuth alloy environment, the system is included, and the same beneficial effects can be achieved.

The invention discloses a circumferential sealing mechanism for a lower pressing plate of a universal testing machine, which comprises a metal inner cylinder, wherein the upper end of the metal innercylinder is fixed on the lower surface of the lower pressing plate, and a spacing I is reserved between the lower end of the metal inner cylinder and the upper surface of a testing machine platform. The circumferential sealing mechanism further comprises a rubber cylinder, wherein the upper end of the rubber cylinder is fixed on the lower surface of the lower pressing plate, the rubber cylinder sleeves the outer side of the metal inner cylinder, an annular space is formed between the metal inner cylinder and the rubber cylinder, a spacing II is reserved between the lower end of the rubber cylinder and the upper surface of the testing machine platform, a metal sealing cylinder is fixed on the upper surface of the testing machine platform, the upper end of the metal sealing cylinder sleevesthe rubber cylinder, and the inner wall of the metal sealing cylinder is in clearance fit with the outer wall of the rubber cylinder, an annular sealing groove is formed in the outer wall of the middle of the rubber cylinder, the upper end of the metal sealing cylinder is provided with an inclined sealing protruding part clamped into the annular sealing groove, and an elastic mechanism capable offorcing the lower end of the rubber cylinder to have the trend of expanding outwards in the radial direction is arranged between the outer wall of the lower end of the metal inner cylinder and the inner wall of the lower end of the rubber cylinder.

The invention relates to the technical field of needle valve matching parts of internal combustion engines, in particular to a novel needle valve matching part which comprises a needle valve body, a first-stage valve element, a second-stage valve element, a pressure adjusting spring, a reset spring, a control sleeve and a plug, the needle valve body is of a hollow structure, the first-stage valve element is installed in the needle valve body, the second-stage valve element is installed in the first-stage valve element, and a pressure storage cavity is formed in the bottom of the needle valve body. A plurality of first-layer spraying holes and a plurality of second-layer spraying holes are formed in the outer side of the pressure storage cavity, the first-level valve element can seal the pressure storage cavity, the bottom of the second-level valve element can stretch into the pressure storage cavity to seal the second-layer spraying holes, and the first-level valve element and the second-level valve element are adopted to independently control the two layers of spraying holes. The second-level valve element can be closed, only the first-level valve element is opened, and therefore only the first-layer spraying holes are opened, and the oil amount is reduced; when high oil quantity is needed, the two-stage valve element can be opened, so that the two layers of spray holes are opened, and the circulation sectional area is increased by increasing the number of the spray holes.

The invention discloses a combined sealing method and device for a continuous low-temperature combustion rotary engine. The combined sealing method and device are characterized in that the device comprises a continuous low-temperature combustion rotary engine shell (1), a main shaft timing gear (2), an auxiliary shaft timing gear (3), a right auxiliary shaft oil seal (5), an end face sealing hex socket (6), an auxiliary wheel (8), an auxiliary shaft (9), an end face seal (10), a main shaft (12), a bearing seal (16), an end face outer leakage sealing ring (17), an end face inner leakage sealing ring (18), a main shaft auxiliary gear matching part (19), a main shaft gear (20), an end face inner seal (21), a left auxiliary shaft oil seal (22), an upper air inlet (23), a main shaft gear protrusion groove (24), a main shaft gear protrusion (25), an upper exhaust port (26), a lower air inlet (27), a lower exhaust port (28), an end face sealing installation hole (29), an end face sealing positioning pin (30), an end face inner leakage sealing groove (31), an end face outer leakage sealing groove (32) and an auxiliary wheel groove (33). By means of the scheme, the sealing problem in the air intake, combustion and expansion processes of the novel continuous combustion low-temperature rotary engine is solved, due to axial sealing and radial sealing and meanwhile by the adoption of a non-contact combined sealing technology, movable sealing of the whole system can be achieved, and the sealing requirement is met.