12 results about "End face mechanical seal" patented technology

This utility model relates to the technical field of single-end mechanical seal structures. It provides a balance-free single-end mechanical seal structure suitable for high-pressure and high-temperature environments, comprising a stationary ring, a rotating ring, and a spring-loaded seat. The stationary and rotating rings slide tightly against each other at their opposite ends. The spring-loaded seat is pressed against the top of the rotating ring. The spring-loaded seat includes a rotating ring positioning ring and a locking ring. The rotating ring positioning ring is engaged with the lower end face of the rotating ring, and the locking ring is locked onto the shaft to be sealed and rotates with it. Elastic connecting elements are provided at four positions (front, back, left, and right) between the locking ring and the rotating ring. Four damping connecting pads are also provided between the locking ring and the rotating ring. The four damping connecting pads and the four elastic connecting elements are staggered around the center of the locking ring. This mechanical seal structure, through the organic combination of elastic connecting elements and damping connecting pads, not only improves the elastic compensation and sealing performance between the rotating and stationary rings but also effectively alleviates the impact load caused by sudden pressure changes or mechanical vibrations.

A double end face mechanical seal, including mutually matched bushings, inner flanges, inner static rings, inner dynamic rings, outer dynamic rings, outer static rings, outer flanges, fixed ring assemblies, and the formed internal cavities, further including static flushing adjusting components, the top of the inner flange is provided with a cavity, the static flushing adjusting components are screwed into the top of the inner flange through threaded cooperation, a sealed cavity is formed with the internal cavities, cooling water is filled in the sealed cavity, medium crystallization is well prevented, heat of rotating sealing pairs is absorbed, a power circulation cooling device is not needed, space occupation is small, the static flushing function can be flexibly used in narrow production environment, gas generated by continuous vaporization of cooling water due to heat generated by high-speed operation can be timely discharged, gas aggregation in the mechanical seal is avoided, and normal cooling of the mechanical seal is affected. The utility model is especially suitable for working conditions of strong corrosion, high temperature, suspended particles and fiber medium.

A kind of high-speed grinding device of paint belongs to paint production technical field.The device aims at the problem that existing horizontal sand mill double-end face mechanical seal structure is difficult to disassemble, leading to inconvenient cleaning and maintenance, and proposes a combination scheme of sliding type grinding cylinder structure and double locking mechanism.The main body includes: sliding seat slidingly arranged on the top of base, grinding cylinder fixedly connected by support;Main shaft penetrates end cover and extends into grinding cylinder and sets multiple grinding discs;Locking mechanism is composed of threaded rod, sliding block and clamping half ring, threaded rod cooperates with threaded groove in sidewall of base, and clamping half ring on top of sliding block is sleeved on the combination of end cover and outer wall of grinding cylinder.The device combines separable cylinder structure and mechanical linkage locking mechanism, ensures grinding efficiency, realizes quick disassembly of grinding cylinder assembly, facilitates thorough cleaning of dead angle areas such as gap between rotor and cylinder, and significantly reduces equipment maintenance difficulty.

The utility model relates to mechanical seal technical field discloses high back pressure integrated type double end face mechanical seal device for rotor pump, including shaft sleeve, medium side dynamic ring, medium side static ring, medium side push ring subassembly, medium side spring, gland, atmospheric side spring, atmospheric side static ring, atmospheric side dynamic ring and integrated limiting board, medium side dynamic ring cover is equipped in the shaft sleeve outer circumferential side surface, medium side push ring subassembly one end connects medium side static ring, medium side push ring subassembly other end connects the gland, is equipped with spring hole in the gland, medium side spring and atmospheric side spring all set up in the spring hole of gland, atmospheric side static ring is inserted in the gland, atmospheric side dynamic ring sets up on the shaft sleeve, integrated limiting board one end connects the gland. The utility model integrates double end face sealing structure as single module through integrated limiting board, reduces the component quantity, reduces assembly error. Medium side dynamic ring anti -rotation peg and atmospheric side dynamic ring anti -rotation peg synergies, ensure the stability under the high -speed rotation of dynamic ring.

The utility model discloses a kind of ultra-high temperature resistant metal bellows double-end mechanical seal structure, it is related to mechanical seal technical field, including main shaft and the mechanical seal assembly of being installed on main shaft, the quenching cavity for filling quenching liquid and the isolation cavity for filling isolation liquid are further had in mechanical seal assembly, isolation cavity is located outside quenching cavity, and the medium side of mechanical seal assembly is further equipped with the cooling assembly for filling cooling liquid, and cooling assembly is sleeved on main shaft. In the utility model, through the cooperation of quenching cavity, isolation cavity and cooling assembly, the inside and outside of its mechanical seal structure can be fully cooled, lubricated and reduced conduction heat.

The application discloses a bidirectional crescent upstream pumping type groove end face mechanical seal, which comprises a sealing ring. Different from the prior art, a plurality of upstream pumping groove groups and downstream pumping groove groups are arranged on the sealing surface of the sealing ring, the upstream pumping groove groups and the downstream pumping groove groups are alternately arranged on the sealing ring, and a sealing weir is formed between adjacent upstream pumping groove groups and downstream pumping groove groups. The upstream groove structure in the crescent shape can reduce the leakage of the fluid medium to the inner diameter side, improve the sealing performance, and timely dissipate the viscous shear heat of the sealing surface fluid, so that the temperature rise of the sealing surface is small. Meanwhile, the fluid medium can flow in a "wave shape" along the crescent-shaped flow channel in adjacent upstream grooves and downstream grooves, a stable fluid film is maintained between the sealing surfaces, the lubrication state of the sealing surface is improved, and the temperature rise and the friction torque of the sealing surface are reduced.

The utility model relates to mechanical seal technical field, and disclose variable ratio pressure's mechanical seal, including pivot and main static ring, the pivot outside fixed mounting has the shaft sleeve, the main static ring one side is provided with the driving ring, the shaft sleeve side fixed mounting has spring seat, the spring seat inside is provided with screw, spring no.

The utility model relates to mechanical field especially relates to a multistage combined compensation formula rotary shaft sealing device. The axle and the axle sleeve pass through the container wall (13), the axle and the axle sleeve are combined together and can rotate together, the axle sleeve outside the container wall (13) is arranged with the wedge-shaped sealing bin of first stage, the soft packing sealing bin of second stage, the nitrogen sealing bin of third stage, the single end face mechanical seal of fourth stage from the container wall outward in proper order, the first wedge-shaped sealing adopts the wedge-shaped sealing ring and the pressing ring, and the material of both is nonmetal material, and the sealing surface is the inclined plane, and the structure of inclined plane increases the contact area, and delays the wear and tear in the stress process, the die spring is set up in the right angle edge of wedge-shaped sealing ring and sealing gland middle, the die spring is in compression state when the sealing device is used first time, along with the wear and tear of wedge-shaped sealing ring and pressing ring, the die spring gradually lengthens, effectively guarantees the contact of wedge-shaped sealing ring and pressing ring sealing surface, prolongs the service life of nonmetal sealing element.

A double-end mechanical seal with multiple seals includes a cover, a first sealing assembly, a second sealing assembly, and a spring assembly disposed between the first and second sealing assemblies. A concave cavity is formed on the inner wall of the cover, and a cooling groove exists between the first and second sealing assemblies, the spring assembly, and the inner wall of the cover. The first sealing assembly includes a first stationary ring and a first rotating ring disposed on one side of the first stationary ring. The second sealing assembly is disposed within the cavity and near the outside of the cover, and includes a second stationary ring and a second rotating ring disposed on one side of the second stationary ring. The double-end mechanical seal with multiple seals achieves double isolation between the rotating and stationary rings through the first and second sealing assemblies, thus preventing leakage of chemical liquids.