35results about How to "Increased sealing security" patented technology

A sealing arrangement for a rotor of a turbomachine includes a blade (2), a heat shield (3, 4) and a sealing element (5, 6) for sealing between the blade (2) and the heat shield (3, 4) when the blade (2), heat shield (3, 4) and sealing element (5, 6) are assembled for use in the rotor. The heat shield (3, 4) includes a first slot (7, 8) for accommodating a first member (11, 12) of the sealing element (5, 6), and a root portion of the blade (2) includes a second and third slot (9, 10) for accommodating a second member (13, 14) of the sealing element (5, 6). The first slot (7, 8) extends in a direction which is substantially mutually perpendicular to a direction in which the second and third slot (9) extends, and the first member (11, 12) extends in a direction which is substantially mutually perpendicular to a direction in which the second member (13, 14) extends.

A liner-less seal application system is programmed to generate a real time seal, the serial number of which is data-matched with product label data on an approaching article. The image is printed onto the adhesive surface of the sealing tape. A vacuum drive belt has both low and high vacuum sections to assist in moving the sealing tape along a vacuum drive belt toward the print head. The real-time seal is printed while the belt drive indexes the tape, and the cutting action is done while the system collects data and the belt drive is stationary. There is only one stepper motor employed to drive the vacuum belt. The vacuum belt drive pulls the tape from the unwind assembly and feeds the tape through the print head and onto the vacuum drum applicator. A perforator device bursts perforation across the round element of the seal image, as an anti-tampering measure.

Provided is a shield portal sealing device capable of adjusting positions and an off-center installation method thereof. The device is installed outside a shield portal, and comprises a steel sleeve, a joint sealing connecting structure and a shield sealing connecting structure, wherein the steel sleeve comprises a round steel cylinder, a portal end connecting steel plate, a tip sealing steel plate, a steel skeleton and a grouting pipe; the joint sealing connecting structure includes embedded parts, a pressing plate, a connecting bolt A and a portal end sealing ring; the shield sealing connecting structure comprises a sealing rubber plate, an arc pressing plate and a turning plate which are successively arranged on the outer side of the tip sealing steel plate, and a connecting bolt B for connecting the sealing rubber plate, arc pressing plate and turning plate on the tip sealing steel plate. The shield portal sealing device can effectively seal the shield portal, and correct or adjust the portal offset to make the shield tunneling attitude more flexible. The method can avoid the adjustment of a launching section tunnel line within a certain range of the deviation value, the portal can easily be shifted a certain distance in an extended mode to a needed direction, and meanwhile the characteristics of the portal center can be quickly adjusted.

The invention discloses a cover which comprises a rotary cover, a lower cover and a water outlet pipe. The lower cover is provided with a water outlet; the cover is characterized in that the water outlet pipe penetrates through the rotary cover and is propped against the bottom of the lower cover; the water outlet pipe can seal the water outlet; the rotary cover comprises a casing and a buckling part positioned in the casing; the lower cover is provided with a ring-shaped groove for containing the buckling part; at least one axial notch groove is formed in the outer wall of the buckling part; the cover is also provided with a lifting valve; the lifting valve is connected with the ring-shaped groove through threads; at least one lug boss is formed on the outer wall of the lifting valve; the lug boss is arranged in the notch groove; and the lifting valve is connected with the water outlet pipe. The cover has a simple structure, is convenient to operate, is not separated from a container, such as a cup, a kettle and a bottle, during sealing, opening and closing, is low in manufacture cost, ensures that a sealing ring and the water outlet pipe integrally form a whole body through injection moulding, has high connection strength, is not easy to drop off, and has high sealing safety.

The invention discloses a dry transformer having the protection dehumidifying function. The dry transformer includes a protection device, shunting connection pieces, a high voltage lead, a high voltage insulator, a conductive row, an upper clamp, a low voltage coil, a high voltage coil, a base protection shell and a connecting frame. The dry type transformer having the protection dehumidifying function is advantaged in that a lead coil is positioned and mounted in the operating position through a fixing plate, a pressing member is closely attached to a high voltage lead end, moisture in the air is then sucked up by an absorbent member, that surrounding of the high voltage lead and each set of the shunting connection pieces is in a dry state is guaranteed, discharge accidents caused by excessive moisture in the air is prevented, safety of the dry transformer is improved, a clamping plate and a connecting panel are closely attached to a lower end of the transformer to protect the bottomof the transformer, small animals are prevented from entering a transformer room through a cable trench below the transformer in operation, safety and efficiency of transformer operation are improved,and occurrence of accidents is reduced.

The invention relates to a high-temperature and high-voltage resistance subsection capacitive level transmitter, which comprises an electric signal processor and a sensor, wherein the sensor is provided with a tubular rigid insulation sleeve with the sealed support bottom end, a plurality of mutually insulated tubular electrodes are arranged from bottom to top in a way of tightly pasting the inner wall of the sleeve in the tubular rigid insulation sleeve, each section of tubular electrode is respectively and electrically connected with the electric signal processor through a connection conducting wire, a flange-shaped connecting body is arranged at a position of the outer wall of the tubular rigid insulation sleeve near the near opening end, and a sealing pad is arranged between the flange-shaped connecting body and the tubular rigid insulation sleeve. The high-temperature and high-voltage resistance subsection capacitive level transmitter has the advantages that the structure is simple and reliable, the simultaneous measurement of various medium interfaces in a container can be realized, in addition, different installation requirements can be met, and the transmitter belongs to the ideal high-temperature and high-voltage resistance subsection capacitive level transmitter.

The invention belongs to the technical field of goggles, and discloses goggles and a production method thereof. The goggles comprise a main lens body integrally formed by 3D printing, a flexible washer and an elastic band; the main lens body integrally formed by 3D printing comprises a lens frame, a main lens, side lenses, and a lens holder; the lens frame is a cover-shaped frame as a whole, the main lens is integrally formed at the front side of the cover-shaped frame, the side lenses are integrally formed at the left and right sides of the cover-shaped frame, the lens holder is integrally formed at the lower side of the cover-shaped frame, and an eyebrow-eye contact part is integrally formed at the rear side of the cover-shaped frame; the lens holder is provided with a nose bridge fitting part; the flexible washer is embedded in the eyebrow-eye contact part; and two ends of the elastic band are respectively connected to the left and right sides of the cover-shaped frame. According tothe goggles and the production method thereof provided by the invention, the production efficiency can be improved.

The invention discloses a connection mechanism for a pot cover sealing ring of an electric pressure appliance, which comprises a container body and a pot cover main body. There are three or more through holes in the pot cover main body, and three or more hook plugs pass through the pot cover sealing ring. Insert and hang in the corresponding through hole of the main body of the pot cover so that the pot cover sealing ring is not easy to fall off from the pot cover. The present invention is applied to a container with pressure and is safe in application. The sealing ring of the pot cover is easy to take and install, and is not easy to fall off and damage. The whole pot cover is convenient to clean, simple and reasonable in structure, low in manufacturing cost and high in sealing performance.

The invention discloses a safety manhole cover for a ship and a use method thereof and belongs to the technical field of ship equipment. The safety manhole cover for the ship comprises a cover plate,a pair of handles, a sealing ring and a rubber sealing ring used for sealing, wherein the pair of handles is hinged to the cover plate; multiple connecting bolts distributed in the form of an annulararray are connected between the cover plate and the sealing ring; a heating groove is dug in one end, far away from the cover plate, of the sealing ring; an electric heating plate is mounted in the heating groove; a heat conducting net sleeves the electric heating plate; the sealing ring is in contact with the rubber sealing ring; a heat insulating mounting plate is fixedly connected to the lowerend of the electric heating plate; a circuit board is arranged in the heat insulating mounting plate; a single chip microcomputer is embedded on the circuit board; the single chip microcomputer is electrically connected with the circuit board; and multiple temperature sensors are mounted in the sealing ring. The safety manhole cover for the ship can be automatically adjusted for temperature changenear the rubber sealing ring; the rubber sealing ring can be automatically heated when the temperature is lower so that an optimal use temperature is always kept; and the sealing safety at the manhole cover is obviously enhanced.

The invention relates to the technical field of seals for pumps, in particular to a seal for a pump with a split structure that is easy to assemble and disassemble. There is a right sealing connector on the surface. The seal of the present invention has a split structure and is easy to assemble and disassemble the pump seal by using a fixing bracket fixedly connected by bolts on the main sealing sheet to connect the sealing connectors on the two side walls, and using a connecting rod with a fastening block on the inner end of the fixing bracket to insert The sealing groove with the fastening groove on the sealing connector improves the fastening performance, and the sealing safety of the entire sealing element is greatly improved by connecting the inclined surface.

The invention discloses a centrifugal type slurry pump. The centrifugal type slurry pump comprises a pump cover, a pump shell connected with the pump cover, a bearing base connected with the pump shell, an impeller positioned in the pump shell and a rotary main shaft connected with the impeller, wherein the rotary main shaft extends out of the pump shell, and is connected with the bearing base; a shaft seal is arranged on a contact part of the rotary main shaft and the pump shell; the shaft seal comprises a sealing box connected with the pump shell, a sealing box pressure cover, a main seal close to the pump shell side, and a secondary seal at the rear side of the main seal; the secondary seal is an external type mechanical seal; the main seal is formed by superposing a plurality of lip-shaped sealing rings; the lip-shaped sealing rings are sealing rings with filter devices; each sealing ring with the filter device comprises a ring-shaped rubber basal body and a reinforcing framework embedded into the rubber basal body, wherein a sealing lip is arranged at the inner ring of the rubber basal body, one side of the rubber basal body is a flow-in side, the other side of the rubber basal body is a flow-out side, a filter part is arranged between the rubber basal body and the sealing lip, and the filter part comprises an accommodating cavity filled with a filter element body and a penetrating channel for enabling the accommodating cavity to communicate with the flow-out side of the rubber basal body;and slurry enters each accommodating cavity from the corresponding flow-in side, and is filtered through the corresponding filter element body, so that filtered clean liquor enters the corresponding flow-out side from the corresponding penetrating channel.

The invention belongs to the field of machinery, and in particular relates to a cam sleeve power shaft-driven hollow cam sleeve impact box for implementing a method for driving rotation of a hollow cam sleeve by a cam sleeve power shaft. The cam sleeve power shaft-driven hollow cam sleeve impact box comprises an impact box, a hollow cam sleeve, hollow cam sleeve bearings, a cam sleeve power shaft,power shaft bearings, connecting rods, guiding components, a power source component, impact heads and the like, wherein a left supporting transmission bearing hole for supporting the cam sleeve powershaft is formed in a left side box plate, and a right supporting transmission bearing hole for supporting the cam sleeve power shaft is formed in a right side box plate; one end of the cam sleeve power shaft runs through the left supporting transmission bearing hole, then is inserted into the hollow cam sleeve, and then is arranged on the power shaft bearing of the right supporting transmission bearing hole; the power source component drives the cam sleeve power shaft to rotate; the cam sleeve power shaft drives the hollow cam sleeve; the hollow cam sleeve drives the connecting rods to move;the connecting rods drive the guiding components and the impact heads to achieve reciprocating impact. The cam sleeve power shaft-driven hollow cam sleeve impact box is simple in structure, does not use easy-shed and quick-wear parts, the service life of the impact box is improved, and the safety and the reliability of equipment are not guaranteed.