279results about How to "Stop the leak" patented technology

The invention belongs to the technical field of underground gas storage, and particularly relates to a long-term efficient hydrogen storage composite lining structure for an underground rock cavern and a preparation method of the long-term efficient hydrogen storage composite lining structure. The long-term efficient hydrogen storage composite lining structure for the underground rock cavern comprises surrounding rock and an internal composite structure of the surrounding rock. The surrounding rock reinforcing layer is formed by pressure pre-grouting in surrounding rock and can resist tensile stress transmitted to the surrounding rock by internal air pressure and enhance air tightness; the permeable layer is arranged on the inner side of the surrounding rock reinforcing layer and can discharge underground water to prevent hydrostatic pressure from causing extrusion deformation damage to the concrete bearing layer during construction and causing instability of the sealing steel lining; the reinforced concrete bearing layer is arranged on the inner side of the permeable layer and the outer side of the slip layer, and micro self-healing capsules capable of repairing cracks and enhancing sealing performance are evenly added in the injection molding process; the anti-drag sliding layer is arranged between the steel lining and the bearing layer and inhibits shear damage of the sealing steel lining to the bearing layer under high internal pressure; the steel lining sealing layer is arranged on the inner side of the sliding layer to bear part of gas load and seal gas.

The present invention relates to a high-performance pneumatic metal-sealed high-frequency ball valve, which belongs to the technical field of ball valves. It includes a valve body, a valve stem, a valve core and a stroke mechanism. The stroke mechanism is used to drive the valve stem to rotate. The valve core is located in the valve body, and the valve core is fixedly connected to one end of the valve stem away from the stroke mechanism; a valve seat is slidably arranged in the valve body, and the valve seat is located between the valve core and the inner wall of the valve body, and the valve seat moves in the direction away from or close to the valve core; a first dust seal ring, an elastic element and a sealing ring are arranged between the valve seat and the valve body, and the first dust seal ring and the sealing ring are both annularly sleeved on the outer wall of the valve seat, the inner wall of the first dust seal ring is fixed to the valve seat, the outer wall of the first dust seal ring abuts against the inner wall of the slide groove, the outer wall of the sealing ring is fixedly connected to the inner wall of the slide groove, the inner wall of the sealing ring abuts against the outer wall of the valve seat, and the elastic element is located between the first dust seal ring and the sealing ring. The present invention has the effect of preventing powder in the medium from entering between the valve seat and the valve body to form self-aggregating blocks, thereby extending the service life of the ball valve.

The invention belongs to the technical field of gearbox shaft end sealing, and particularly relates to a motor vehicle shaft end double-blade sealing device and a shaft end sealing design method.The method comprises the following steps that S1, working condition parameters are determined; s2, designing a double-blade impeller; s3, designing a sealing structure; and S4, outputting a design result. The sealing effect is good, the double-blade impeller and the staggered labyrinth seal are combined, and the sealing performance of the shaft end of the gearbox is effectively improved; the operation and maintenance cost is reduced, and the operation and maintenance interval can be effectively prolonged and the operation and maintenance investment is reduced; the reliability is high, a non-contact sealing mode is adopted completely, and the reliability of the double-blade impeller structure is high; and the design and three-dimensional modeling work of the shaft end sealing device can be automatically completed according to the determined environmental parameters and boundary dimension requirements, and a user can complete the design adjustment work of the shaft end sealing device through one key based on reliability redundancy.

The invention discloses a lithium battery safety energy storage electric cabinet and an operation management method thereof. The lithium battery safety energy storage electric cabinet comprises a cabinet body, an energy storage system, a heat dissipation fire extinguishing system and a control system, the cabinet body is fixed on the base, and the energy storage management system, the heat dissipation fire extinguishing system and the control system are all arranged in the cabinet body; the energy storage management system comprises a battery module, a battery management system and an energy storage system operation management device; each battery unit is managed and maintained through the battery management system, and the state of the battery is monitored; energy conversion, bidirectional flow and voltage level conversion between an energy storage battery and a power grid are realized through operation management of the energy storage system, and grid connection and disconnection of an electric cabinet are controlled; the environment state in the cabinet body is monitored through the control system, network disconnection is carried out through the battery management system and the energy storage system when abnormal temperature, fire, smoke or combustible gas in the cabinet body are monitored, and cooling and fire extinguishing are carried out through the heat dissipation fire extinguishing system.

The invention discloses an atomizer and a fragrance diffusion machine, and belongs to the technical field of fragrance diffusion machines, the atomizer comprises an atomizing bottle, an atomizing core and an atomizing cover, the atomizing cover is detachably installed on the atomizing bottle, a liquid containing cavity is formed in the atomizing bottle, a first atomizing cavity is formed in the atomizing cover, the atomizing core is installed in the atomizing cover, the atomizing core is provided with an atomizing position arranged in the first atomizing cavity, and the atomizing position is arranged in the first atomizing cavity. The atomizing core is provided with a liquid inlet, and the atomizing position is communicated with the liquid containing cavity through the liquid inlet; an air hole is formed in the atomization cover, and the first atomization cavity communicates with the liquid containing cavity through the air hole; the air hole is the only channel for communicating the liquid containing cavity with the external atmosphere; the aperture of the air hole has a first preset value, and liquid in the liquid containing cavity cannot flow out of the air hole at the first preset value. The first preset value limits the specific size of the air hole, the coexistence state of the liquid channel and the gas channel cannot be formed in the air hole, after the liquid in the liquid containing cavity is discharged by a certain volume, a certain pressure difference is generated inside and outside the atomizer, and due to the pressure difference, the liquid cannot continuously flow out.

The present invention proposes a non-contact high-temperature mechanical sealing device, including a shaft sleeve, a dynamic ring, a static ring, a pumping ring, a pumping blade I, a pumping blade II and a secondary gland. The shaft sleeve is provided with a pumping hole I and a pumping hole II. By utilizing the rotation of the shaft, a structure of four pumps in series, such as the pumping hole I, the pumping hole II, the pumping blade I and the pumping blade II, is adopted, so that the coolant flows sequentially around the inner cavity of the dynamic and static rings, taking away the heat applied to the sealing ring and the lubricating film by the high-temperature medium and the friction of the sealing surface, reducing the temperature of the sealing ring and the lubricating film, inhibiting the evaporation of the lubricating film, and improving the effect of the mechanical seal. The pumps are connected in series to form a strong coolant delivery driving force, which can realize the self-circulating flow cooling of the coolant. At the same time, the pumping capacity of the pumping holes I, II and the pumping blades I, II is positively correlated with the sealing speed. When the speed increases and the friction temperature rise of the sealing end face increases, the pumping capacity can be automatically increased, the cooling strength can be increased, and the effect of automatically adjusting the cooling intensity can be achieved.

The invention provides a phase-change temperature-control flame-retardant current collector and a preparation method and application thereof. The current collector comprises a conductive coating and a temperature-control flame-retardant layer, the conductive coating comprises a first conductive coating and a second conductive coating and is used for loading an active material and packaging the temperature-control flame-retardant layer, and the temperature-control flame-retardant layer is arranged between the first conductive coating and the second conductive coating; the temperature-control flame-retardant layer takes a porous copper film as a matrix, and the porous copper film is filled with a phase-change material and a flame retardant. According to the phase-change temperature-control flame-retardant current collector provided by the invention, the latent heat of the volume ratio is greater than 100J / cm < 3 >, the heat conductivity is greater than 150W / m.K, and the thickness is 10-50 microns, so that the problems of low space utilization rate, low loading capacity and low heat conductivity of a phase-change material in a current temperature-adjusting diaphragm and a temperature-adjusting electrode are well solved. In addition, the battery internal temperature control assembly has the characteristics of simple structure, high integration level and low cost, and the actual application requirement of the battery internal temperature control assembly is well met.

The utility model discloses a passivation device for mechanical manufacturing, and relates to the field of passivation devices for mechanical parts. The sand box passivating device comprises a protecting mechanism, a passivating mechanism is arranged on the lower portion in the protecting mechanism, the passivating mechanism comprises a fixing frame, four universal wheels are arranged at the bottom of the fixing frame, and a sand box is installed on the top of the fixing frame through a plurality of spring sleeve rods. Wherein the fixing frame is combined with the universal wheels, stable supporting is provided, moving and positioning are convenient, the flexibility and convenience of the device are enhanced, the spring sleeve rod utilizes the elasticity and the buffering capacity of the spring sleeve rod, impact generated when the sand box vibrates is reduced, uniform and stable vibration of the sand box is kept, grinding materials are evenly distributed in the vibration process through the circular structure of the sand box and the arrangement of the passivation tank, and the grinding efficiency is improved. And the vibration motor effectively activates and distributes grinding materials through controllable vibration, the grinding materials make contact with the surfaces of the parts in an all-dimensional mode, and the passivation effect and uniformity are ensured.

The invention relates to the field of plate type heat exchange, in particular to an insert type forced flow optimal distribution plate type heat exchanger which comprises two sets of side plates and six sets of corrugated plates, and the two sets of side plates and the six sets of corrugated plates are each provided with four sets of through grooves in a penetrating mode. A first connecting pipe, a second connecting pipe, a third connecting pipe and a fourth connecting pipe are detachably installed on the outward sides of the four sets of through grooves in one set of side plates correspondingly, and the second connecting pipe is located over the first connecting pipe. According to the air conditioner, impulsive force generated when refrigerating fluid and cold carrying fluid are introduced can be used for being matched with rotation of multiple sets of different fan blades in the refrigerating area and the cold carrying area, and the upper portion and the lower portion between the refrigerating area and the cold carrying area are promoted to achieve balanced heat exchange through the arrangement of an upper flow guide frame and a lower flow guide frame; and the retention time of the liquid fluorine in the refrigeration area can be prolonged, and meanwhile, the discharge of the gaseous fluorine is accelerated, so that the heat exchange effect and the heat exchange efficiency of the whole device are effectively improved.

The utility model relates to the technical field of chemical engineering, in particular to a decoking mechanism for coal acetylene plasma reaction. According to the technical scheme, a supporting column is arranged on the outer side of a base, a first sealing ring is arranged on the inner side of the base, a first sewage discharging groove is formed in the bottom end of the base in a penetrating mode, a fixing frame is arranged on the base, an ultrasonic transducer is embedded in the fixing frame, a flushing pipe is arranged on the fixing frame, and a water inlet pipe is arranged on the flushing pipe. A reaction container is arranged on the base and located on the outer side of the fixing frame in a covering mode, a connecting pipe is connected to the bottom end of the flushing pipe, a supporting plate is arranged on the outer side of the end, close to the connecting pipe, of the flushing pipe, a sealing plate is arranged at the bottom end of the base through the supporting plate in a supporting mode, and the first sewage discharging groove of the base is blocked through the sealing plate. The coal acetylene plasma reactor cleaning device is simple in structure, provides a reliable solution for cleaning a coal acetylene plasma reactor, and provides a safer and more environment-friendly cleaning technology for industrial production.

This utility model relates to the field of valve body technology, and in particular to an impact-resistant high-temperature and high-pressure valve body, comprising a valve body and an impact-resistant plate. The inner wall of the valve body has an inlet chamber and a drain chamber, which are connected. A limiting groove is formed in the inner wall of the inlet chamber, and the impact-resistant plate abuts against the limiting groove, with its outer peripheral wall in sliding contact with the inner wall of the limiting groove. Multiple flow holes are formed on the outer wall of the impact-resistant plate, with the diameter of the flow holes increasing from the middle to both ends. In this utility model, by setting up the impact-resistant plate, the impact force of the fluid is transferred from the inner wall of the valve body to the impact-resistant plate, avoiding direct impact on the valve body. The design of the flow holes with increasing diameter from the middle to both ends reduces the flow velocity and disperses the pressure when the fluid passes through, further reducing the impact of the fluid on the valve body, preventing fatigue, wear, and cracks in the valve body material, extending the service life of the valve body, and ensuring safe operation of the equipment.

The low-temperature economizer with the smoke leakage prevention function comprises a box body, heat exchange pipes, a first pipe plate, a second pipe plate and a lantern ring, the left end and the right end of each heat exchange pipe are communicated with the ends of the adjacent heat exchange pipes through elbows respectively, and the multiple heat exchange pipes and the elbows penetrate through the first pipe plate and the second pipe plate in a snake-shaped reciprocating mode; the outer wall of the left end of the heat exchange tube is connected with the first tube plate in a full welding mode, the second tube plate is provided with a penetrating connection hole, and the outer wall face of the lantern ring is matched with the penetrating connection hole. A sealing ring I and a sealing ring II which are coaxial are respectively arranged on the outer wall surface and the inner wall surface of the inner end of the lantern ring; a baffle is arranged on the outer wall surface of the outer end of the lantern ring; the baffle abuts against the outer side face of the second tube plate, so that the first sealing ring tightly presses the inner side face of the second tube plate. The outer wall face of the right end of the heat exchange pipe penetrates through an inner hole slidably connected with the second sealing ring. The first sealing ring and the second sealing ring form a double-sealing structure, the sealing effect is good, and smoke is effectively prevented from leaking from gaps to corrode the elbow.

The invention provides a metal sealing rope, a preparation method of the metal sealing rope and a turbine stationary blade sealing structure. The metal sealing rope provided by the invention is used for sealing between a turbine stationary blade and a stationary blade sealing ring; the metal sealing rope comprises an armor layer, a filling core and a fixing agent; the armor layer is formed by weaving a metal flat belt; the filling core is formed by weaving a plurality of core bodies; the armor layer is coated on the filling core; the fixing agent is dispersed in the armor layer, the contact surface of the armor layer and the filling core and in the filling core; the armor layer and the fixing agent enable the metal sealing rope to be rectangular in a normal temperature state; the fixing agent is volatilized through heat generated by working of the gas turbine, so that the metal sealing rope expands in the longitudinal direction and the transverse direction, and the metal flat belt of the armor layer is in plane contact with the turbine stationary blade and the stationary blade sealing ring. According to the metal sealing rope, the preparation method of the metal sealing rope and the turbine stationary blade sealing structure, good sealing can be formed between the turbine stationary blade and the stationary blade sealing ring.

The present invention relates to a cryoablation needle with an adjustable targeting area, comprising an adjusting component and a fixing component, wherein the adjusting component can move axially relative to the fixing component to adjust the length of the targeting area: the fixing component comprises a needle rod, a rear-section thermal insulation tube, an air intake pipe and an air return pipe, the rear end of the needle rod is fixedly connected to the front end of the rear-section thermal insulation tube, the needle rod is communicated with the rear-section thermal insulation tube to form a accommodating cavity; the air intake pipe and the air return pipe are both inserted into the accommodating cavity from the rear end of the rear-section thermal insulation tube; the adjusting component comprises a front-section thermal insulation tube and a core shaft, the front-section thermal insulation tube is axially slidably arranged in the accommodating cavity to adjust the length of the targeting area; the air intake pipe passes through the front-section thermal insulation tube and extends into the needle rod; the core shaft is inserted from the rear end of the rear-section thermal insulation tube and linked with the front-section thermal insulation tube. The present invention solves the technical problems of the existing cryoablation needles that the treatment operation is complicated and the surrounding healthy tissues are easily damaged due to the fixing of the targeting area.

The invention belongs to the technical field of sheath-core composite fibers, and particularly relates to a preparation method of an efficient temperature-adjusting sheath-core composite fiber, and the preparation method comprises the steps of preparation of an aluminum organic ligand, preparation of a sheath layer melt and melt spinning. According to the invention, dicyclohexylmethane diisocyanate and monoethanolamine are subjected to an addition reaction to generate urea bonds which are coordinated with Al < 3 + > to obtain an aluminum organic ligand, Al2O3 which is uniformly distributed is generated in situ in a PA matrix in the melt blending process of the aluminum organic ligand and the PA matrix, the heat conductivity of a skin layer is improved, and the heat conductivity of the skin layer is improved under the combined action with a phase change material in a core layer; the synergistic effect of rapid heat conduction and phase change temperature adjustment is achieved, and efficient temperature adjustment and rapid heat conduction and heat dissipation are completed. The high-efficiency temperature-adjusting sheath-core type composite fiber prepared by the invention can be applied to the fields of home textiles, clothing and the like, and has a better application prospect in mattresses due to good temperature sensing capability.

The application relates to an air duct structure of a cabinet air conditioner and the cabinet air conditioner. The air duct structure comprises: an air inlet air duct, a first end of the air inlet air duct is connected with an air conditioner air inlet, a second end is provided with a fan, an air outlet side of the fan is connected with an air conditioner air outlet, the fan is used for sucking indoor air entering the air conditioner through the air conditioner air inlet and the air inlet air duct, and blowing the indoor air through the air conditioner air outlet; a dust suction air duct, a first end of the dust suction air duct is connected with a dust storage box of the air conditioner, and a second end is connected with any position between the first end and the second end of the air inlet air duct; wherein the dust storage box can be connected with a dust collection box of a sweeping robot, and the fan is used for sucking dust in the dust collection box into the dust storage box. When the dust storage box of the application is connected with the dust collection box of the sweeping robot, the dust in the dust collection box can be cleaned, manual disassembly of the dust collection box is not needed, the labor intensity of a user is effectively reduced, user experience is improved, and the practicability of the sweeping robot is improved.

The utility model relates to the field of laser tube, especially a high pressure shielding wiring device and carbon dioxide laser tube, wiring device includes insulating sleeve and base, and the base includes stud and wire column, and the stud is connected on the insulating sleeve, and the wire column is located inside the insulating sleeve, and the one end of stud away from the insulating sleeve is provided with mounting hole, and the first inner taper face has in the top of mounting hole, still include the elastic clamp column for placing in mounting hole, be equipped with the clamping core passageway and the line channel of intercommunication on the elastic clamp column, and the one end of elastic clamp column near stud is equipped with the first outer taper face with the first inner taper face matching, through the cooperation of first inner taper face and first outer taper face, make elastic clamp column can be fastened in mounting hole, then use the pressure cap again and fix elastic clamp column on base, realize the quick clamping of high voltage line, and the core of high voltage line is located in the elastic clamp column, and the core is accommodated through the elastic clamp column, avoids the core bare formation tip, thereby avoids the core high voltage tip discharge when operating.

The present application relates to a kind of dry screw compressor of gear speed-up, gas compression area is equipped with compression component on it, gear bearing, bearing lubrication area is equipped with shaft seal component on it, gear bearing lubrication area is also equipped with gear component;Gear component includes the speed-up gear set driven by low-speed motor, speed-up gear set realizes high speed transmission by synchronous gear set driven yin, male rotor.High speed transmission is realized by low-speed motor matching speed-up gear, and synchronous gear drives rotor synchronous operation, avoid mutual friction and collision between rotor, overall layout arrangement is reasonable, compact structure, transmission operation is stable, power transmission efficiency is high, cost is reduced.Using equipped shaft seal component combines embedded labyrinth seal structure, with air barrier, leakage collection and leakage backflow structure, sealing performance is stable and reliable, prevent lubricating oil from leaking into the interior of compression area, while avoiding compressed gas to leak into lubrication area, ensure dry screw compressor oil-free compression operating condition stable operation, improve the reliability of equipment operation.

This utility model discloses a leak-proof connection structure for a mercury refining pipeline, comprising a fixed plate, a first upper fixed block fixedly connected to the inner wall of the fixed plate, a lifting screw installed within the first upper fixed block, a sealing ring fixedly connected to the lower end of the lifting screw, and a flange installed within the sealing ring. Through this structure, by rotating the rotating head to move the lifting screw up and down, the tightness between the sealing ring and the flange can be adjusted, achieving adjustable sealing of the pipeline connection. The multi-fixed block design enhances structural stability and provides double sealing protection, forming two seals: the first is the flange gasket itself, and the second is the externally pressed sealing ring. Even if the first seal fails unexpectedly, the second seal can completely prevent leakage. The flange inner hole facilitates installation and fixation. This structure effectively prevents leakage during mercury refining pipeline transportation, improving safety and sealing reliability. This structure is an independent, attachable module that can be installed on existing standard flange-connected pipelines.

The utility model relates to the technical field of pipe fitting connecting devices, and discloses a porcelain tube with a quick connecting structure, which comprises a porcelain tube I, a porcelain tube II is connected to the right side of the porcelain tube I in a sliding manner, an annular groove is formed in the right side of the outer wall of the porcelain tube I, and a fixing hoop is fixedly connected to the outer wall of the porcelain tube I; an annular protruding edge is fixedly connected to the left side of the outer wall of the second porcelain tube, a threaded hoop is slidably connected to the outer wall of the second porcelain tube, and a sealing mechanism is arranged outside the annular protruding edge and used for preventing materials in the tube from leaking. According to the utility model, through the cooperation of the annular groove and the annular rib, the first porcelain tube and the second porcelain tube can be rapidly and preliminarily positioned, and through the threaded connection of the threaded hoop and the fixing hoop, the fastening force can be effectively transmitted, and the threaded hoop and the fixing hoop can be tightly attached, so that the first porcelain tube and the second porcelain tube can be firmly fixed together. And the stability and the reliability of the connecting structure are enhanced.

The present invention provides a non-contact mechanical seal adapted to high-temperature media, comprising an elastic component, a dynamic ring seat, a left dynamic ring piece, a static ring, a right dynamic ring piece, a corrugated foil piece, a support ring, a pressure plate, a shaft, a positioning ring, a cooling water outlet, a sealing chamber cover, a sealing end cover and a cooling water inlet; the positioning ring, the elastic component and the dynamic ring seat are sequentially mounted on the shaft, the left dynamic ring piece and the support ring are respectively mounted on both ends of the dynamic ring seat, the two sides of the corrugated foil piece are respectively in contact with the inner sides of the circular ring ends of the right dynamic ring piece and the support ring, the static ring is connected to the sealing chamber cover, a microchannel is arranged between the inner side of the static ring and the support ring, a micro-concave cavity is arranged on the side of the left dynamic ring piece close to the static ring, a pumping groove is arranged on the side of the right dynamic ring piece close to the static ring, the cooling water outlet is arranged on the sealing chamber cover, and the cooling water inlet is arranged on the sealing end cover. The sealing device of the present invention can effectively suppress the vaporization of the liquid film on the sealing end face, has the self-adaptability of the end face deformation, can effectively prevent the leakage of the medium, and has the adaptability to high-temperature working conditions and the reliability of operation.

The utility model discloses a waste gas treatment device for a carbon emission reduction system of a thermal power plant, which relates to the technical field of energy-saving and environment-friendly equipment and comprises a gas inlet pipeline and a support frame, sealing covers are arranged at two ends of the gas inlet pipeline, a communicating pipe is arranged in the middle of the outer side of each sealing cover, and a centrifugal fan is arranged in the gas inlet pipeline. A guide plate is arranged on the inner wall, close to the lower portion of the centrifugal fan, of the air inlet pipeline, an opening is formed in the side wall of the lower portion of the air inlet pipeline, a sealing door is arranged at the opening and rotatably installed on the portion, on one side of the opening, of the air inlet pipeline, and a first filter plate is arranged on the inner wall of the sealing door; compared with the prior art, the waste gas impurity removal device has the advantages that the chance and probability that impurities are in contact with the first filter plate are greatly improved through the centrifugal fan, the guide plate and the first filter plate, the waste gas impurity removal effect is effectively improved, the sealing performance of the whole device is improved through the sealing door and the first filter plate, and the service life of the device is prolonged. And adverse effects of waste gas leakage on environment and equipment operation are avoided.

The utility model discloses a two-way throttling solenoid valve with adjustable flow, which comprises a solenoid valve body, the solenoid valve body comprises a valve body, a valve sleeve, an iron core, a valve core and an adjusting mechanism, the valve sleeve, the iron core and the valve core are positioned in the valve body, and the adjusting mechanism is used for rotating a pull rod to drive the iron core to move up and down. Meanwhile, the iron core clamping groove ensures that the pull rod is stably connected with the iron core, so that the adjusting action is accurately transmitted; a gap groove in the valve element is matched with the adjusting mechanism, flow adjustment is further refined, and the flexibility and accuracy of adjustment are enhanced; the gap alpha between the valve sleeve and the iron core defines the flow adjusting range, an operator can conveniently and finely control the rotation amplitude of the pull rod in a labor-saving mode through the hand wheel, and stable rotation of the pull rod and stable movement of the iron core during adjustment are guaranteed through cooperation of the rod sleeve on the outer wall of the pull rod and the valve body wedging groove.

The utility model discloses a kind of support seat structures of reduction gear of sedimentation tank, it is related to reduction gear support seat technical field, including reduction gear base, and the main shaft matched with reduction gear base is used, the transmission assembly that can drive main shaft rotation is assembled on the reduction gear base;Utilize bearing seat and gland to realize the accurate support and axial limit of bearing, while through rubber gasket adjustment concentricity and centring, reduce main shaft deformation and vibration, ensure rotation accuracy, reduce bending fracture risk;Optimized sealing design, use oil seal and sealing ring to prevent impurities from entering and lubricant leakage, maintain internal cleanliness and good lubrication, reduce wear and tear;Adopt rubber vibration isolation pad and reinforcing part, vibration is isolated respectively, enhance rigidity, reduce bearing vibration impact damage;Cooperate with protective components, such as bearing seat, gland and oil seal, block impurities from invading, prevent lubricant leakage, ensure bearing lubrication, improve its service life.

The utility model relates to the technical field of gear shafts, and discloses a high-strength walking beam input shaft which comprises a gear main shaft, reinforcing threads are formed in an inner cavity of the gear main shaft, a liquid retention cavity is formed in the inner cavity of the gear main shaft, and internal threads are formed in the inner wall of the side face of the reinforcing threads. According to the gear sealing device, the gasket is arranged, so that in the manufacturing process of machinery and equipment, the gasket is mainly used for preventing liquid or gas media from leaking, a system is protected against the influence of the external environment, and the service life of the gear sealing device is prolonged. The gasket can reduce friction and abrasion between two contact surfaces, protect parts from being damaged, prolong the service life of equipment, can be used for adjusting the gap or levelness between the parts to ensure normal operation of the equipment under some conditions, has buffering performance, can absorb vibration and impact, and can be used for improving the service life of the equipment. And the influence of noise and vibration on equipment is reduced.

This utility model relates to the field of octadecanamide processing technology, and discloses a distillation and purification device for octadecanamide processing, including a distillation kettle. A support ring is fixedly connected to the surface of the distillation kettle, and a support rod is fixedly connected to the bottom of the support ring. A rotating screw is rotatably connected to the surface of the distillation kettle. This utility model, by setting the surface of the rotating screw to contact the inner surface of the sealing cover, and the bottom of the limiting rod to contact the top surface of the sealing cover, ensures the sealing cover is firmly installed while also improving sealing performance. The rotating screw can be rotated to adjust its contact tightness with the sealing cover, and the limiting rod provides auxiliary support and positioning. Together, they effectively prevent steam leakage from the sealing cover within the distillation kettle, ensuring the distillation process takes place in a relatively closed environment, thereby improving the quality and efficiency of distillation and purification.

The utility model discloses an anti-seepage structure of a wastewater collection pool, which relates to the field of wastewater collection pools and comprises a treatment pool, raised plates are integrally formed on the periphery of the upper end of the treatment pool, and rectangular plates are fixedly mounted on the periphery of one end, far away from the treatment pool, of each raised plate. Fixed limiting rods are fixedly mounted on the two sides of the ends, away from the protruding plate, of the multiple rectangular plates, threaded columns are fixedly mounted at the upper ends of the multiple fixed limiting rods, the outer rings of the multiple threaded columns are sleeved with anti-seepage plates, and attaching sealing plates are integrally formed at the bottoms of the ends, away from the threaded columns, of the anti-seepage plates; waterproof sticky plates are attached to the periphery and corners of the interior of the treatment pond, sponge plates are attached to the ends, away from the periphery of the interior of the treatment pond, of the waterproof sticky plates, and four side sealing plates are in threaded connection with the ends, away from the waterproof sticky plates, of the sponge plates. By the adoption of the structure, the sealing element can be tightly attached to an internal sealing assembly after being installed, and the overall sealing performance is enhanced.

A threaded sealing structure for a vertical pump includes a pump head housing, an impeller connected to the inner side of the pump head housing, a sealing ring with its inner ring connected to the outer wall surface below the impeller, a pressure plate abutting the lower end face of the sealing ring and snapping onto the pump head housing, and a front cover abutting the lower end face of the pressure plate and connected to the pump head housing. The pressure plate and the front cover have openings in their middle sections, making the lower part of the pump head housing an inlet. The impeller is threaded to the pump head housing, with the thread direction opposite to that of the impeller. The pump head housing has an opening at its upper end, where a shaft core with its lower end connected to the impeller is located. A motor is connected to the upper end of this shaft core. A labyrinth sealing ring is located on the outer wall surface of the upper end of the shaft core. The advantages of this invention are: the thread can block liquid leakage in the gap when the impeller rotates; at the motor connection, liquid leakage is prevented by the cooperation of the labyrinth sealing ring and the water-throwing ring.