203results about How to "Reduce leak rate" patented technology

According to the low-resistance and low-leakage bag type dust collector provided by the utility model, the air inlet main flue is directly arranged in the middle box body of the dust collection module unit, and is directly perforated to serve as a branch air inlet to enable flue gas to enter the filter chamber, so that a complicated external flue structure in the traditional design is reduced, the resistance of the flue gas in the transmission process is reduced, and the dust collection efficiency is improved. Meanwhile, the heat loss of the flue is reduced; the top of the flue gas chamber is provided with a mounting hole convenient for the cloth bag assembly to enter and exit, the side wall is provided with a manhole door convenient for entering the inside for maintenance, and other openable structures are not arranged any more, so that the leakage rate is reduced, and low-temperature gas invasion is reduced to the greatest extent. Smoke at the outlet of the cloth bag assembly directly flows into the flue gas chamber and then flows out of the smoke outlet connector, and smoke resistance is reduced. The guide shutter mechanisms are arranged at the branch air inlets, smoke can be guided, smoke resistance can be reduced, smoke speed reduction and particulate matter sedimentation are achieved, and the situation that smoke carries large-particle dust to abrade a cloth bag, sparks burn the bag and the like is prevented.

The invention belongs to the technical field of composite materials, and particularly relates to a carbon fiber composite material for preventing low-temperature medium leakage and a preparation method and application thereof. The carbon fiber composite material comprises carbon fibers, a resin matrix, modified nano-hydroxyapatite and an anti-seepage film, the mass percentage content of the carbon fiber is 45-69%, the mass percentage content of the resin matrix is 26-37%, the mass percentage content of the impermeable film is 2-10%, and the balance is modified nano-hydroxyapatite; the modified nano-hydroxyapatite, the impermeable film and other raw materials are added into the formula of the carbon fiber composite material, and the impermeable performance of the carbon fiber composite material in a low-temperature medium is comprehensively improved through the modified nano-hydroxyapatite and the impermeable film. Experimental results show that the thickness of the carbon fiber composite material is smaller than 3 mm, and the leakage rate under 3 MPa is smaller than 10 <-5 > Pa.m < 3 > / s.

The utility model relates to the technical field of swimming pool equipment, in particular to a swimming pool activated carbon filter element rapid replacement device which comprises a water pump bottom plate, a water outlet pipe, a filter assembly and a limiting supporting assembly. The water outlet pipe is fixedly arranged at the bottom of the water pump bottom plate, and the filter assembly is installed on the outer side of the bottom of the water outlet pipe; according to the swimming pool activated carbon filter element rapid replacement device, rapid connection is achieved through cooperation of a clamping groove in the surface of a connecting pipe and a clamping shaft at the top of the filtering assembly, and disassembly work is convenient; after installation is completed, pressure is applied through a knob at the bottom of a turnover frame in the limiting supporting assembly, so that the water outlet pipe and the filtering assembly are effectively extruded, shaking and connection loosening are avoided, the leakage probability is reduced in a pressure applying mode, and the risks of connection loosening and connection position breakage caused by shaking of the filtering assembly are also reduced.

The utility model discloses a novel duckbill valve which comprises a duckbill valve outer-layer shell and a base and is characterized in that a cavity is formed in the outer-layer shell, a liquid input port communicated with the cavity is formed in the lower end face of the base, the outer-layer shell is contracted inwards from bottom to top, and a liquid output channel communicated with the cavity is formed in the top of the outer-layer shell; the length of the liquid output channel is at least 2 mm, the width of the liquid output channel is at least 0.1 mm, a cavity formed in the outer-layer shell is composed of an upper-layer cavity body and a lower-layer cavity body, the upper-layer cavity body is in a cone shape with the conical tip included angle being 47.64 degrees in the section view and is connected with the liquid output channel, and the lower-layer cavity body is in a cylinder shape and is connected with the liquid input port. According to the novel duckbill valve, the size, the structure, the internal included angle and the radian of the outer surface of the duckbill valve shell are redesigned and arranged on the basis of an original product, the sealing performance of the novel duckbill valve is effectively improved, the liquid leakage rate is reduced, and meanwhile the production and machining difficulty of the novel duckbill valve is reduced.

The utility model discloses an electrode assembly and a battery monomer with the electrode assembly. The electrode assembly comprises an electrode assembly body and an electrode assembly, the tab is arranged on at least one side of the pole group body in the first direction, the tab comprises a plurality of sub-tabs, the plurality of sub-tabs are sequentially arranged in the thickness direction of the pole group body, and in the thickness direction of the pole group body, every two adjacent sub-tabs are arranged in a staggered manner in the second direction and are connected in a lap joint manner; and the first direction, the second direction and the thickness direction of the pole group body are mutually vertical in pairs. According to the electrode assembly disclosed by the utility model, the thickness and the number of layers of the ultrasonic welding tab pieces can be reduced, so that the probability of pseudo soldering or solder skips between the tab pieces is reduced, and the yield of the electrode assembly is improved.

The invention discloses an ultrahigh-pressure subsurface safety valve, belongs to the technical field of petroleum and natural gas well completion, and aims at solving the problem that an existing subsurface safety valve is prone to leakage under the high-pressure condition. The ultrahigh-pressure subsurface safety valve comprises an upper connector (1), a spring barrel (3) and a lower connector (4) which are sequentially connected from top to bottom, and a piston cavity (28) is formed in the side wall of the upper connector (1); a piston mechanism is connected into the piston cavity (28) in a sealing mode, a positioning sealing nut (9) is arranged in the lower end of the piston cavity (28), and when the valve plate sealing mechanism is in an open state, the piston mechanism is connected with the positioning sealing nut (9) in a metal sealing mode. When the valve plate sealing mechanism is in a closed state, the piston mechanism is in metal sealing connection with the surface of the piston cavity (28). Under the conditions of high pressure and high temperature, the metal sealing connection performance is not easy to change, the product stability is improved, and the purpose of reducing the leakage rate of the safety valve is achieved.

The present application provides a test device for testing the impermeability of concrete, which relates to the technical field of testing the impermeability of concrete, including a test table detachably connected with an assembly barrel for carrying the test concrete, the assembly barrel having a first placement groove, the first placement groove being sleeved with a first sealing sleeve, the assembly barrel having a second placement groove at one end away from the first placement groove, the second placement groove being slidably connected with a plurality of locking baffles, the surface of the locking baffle being sleeved with a second sealing sleeve, the locking baffle moving toward the test concrete when the assembly barrel abuts, and pushing the second sealing sleeve. The present application can reduce the probability of the sealing sleeve sleeved on the concrete specimen being offset when testing the concrete specimen.

The utility model provides a feed granulator with a particle screening function for feed production. The feed granulator comprises a granulating unit and a screening unit, the granulating unit comprises a machine body, a granulating cavity and a material bearing cavity located above the granulating cavity are formed in the machine body, a rotating shaft is vertically arranged in the granulating cavity, a rotating disc is connected to the rotating disc, the rotating disc is arranged between the granulating cavity and the material bearing cavity in a spaced mode, a plurality of penetrating holes are formed in the rotating disc, and the penetrating holes are communicated with the rotating disc. The rotating shaft is in transmission connection with a driving motor; a feeding port is formed in the upper portion of the material bearing cavity, and a plurality of pressing rollers are arranged in the material bearing cavity. A discharging opening is formed in one side of the granulating cavity, and a scraping plate located below the rotating disc is arranged in the granulating cavity; the screening unit comprises a vibration frame arranged on one side of the discharging port, a vibration motor and an obliquely-arranged screen are arranged on the vibration frame, a mounting plate is arranged below the vibration frame, and a plurality of buffering components are arranged between the vibration frame and the mounting plate.

The invention discloses a water pump-pressure control valve combined dispatching method for an urban water supply network. The method comprises the following steps: constructing a hydraulic model; based on the hydraulic model, the opening degree of a pressure control valve in the water supply system and the operation rotating speed and the operation lift of a water pump serve as decision variables, water saving cost, water pump energy consumption saving cost and pipe network leakage control effect maximization serve as targets, and a water pump-pressure control target function is built; and setting a constraint based on a water demand in the water supply system, solving the water pump-pressure control objective function, and evaluating a solving result to output an optimal scheduling scheme. The invention further provides a water pump-pressure control valve combined dispatching device. The method provided by the invention can provide a scientific, reasonable and effective evaluation basis for the optimal scheduling of the water pump-pressure control valve of the municipal water supply network.

The invention belongs to the technical field of medicines, and relates to a cholesterolized rapamycin liposome as well as preparation and application thereof. The invention relates to a cholesterylated rapamycin liposome, which is prepared from cholesterylated rapamycin, phospholipid and a phospholipid PEG (Polyethylene Glycol) derivative. The liposome is mainly composed of a rapamycin cholesterol conjugate, the coupling effect of cholesterol and rapamycin indirectly enables a drug and phospholipid to be tightly combined, compared with free rapamycin, the entrapment efficiency is greatly improved, the leakage rate is reduced (the entrapment efficiency is improved by 8.05%, and the leakage rate is reduced by 100%), the entrapment efficiency of the preparation is as high as 95% or above, and the preparation has good application prospects. The particle size is about 120nm, the PDI is less than 0.2, the drug can be stably delivered in vivo, the circulation time of the drug in vivo is prolonged, the toxic and side effects are reduced, the safety is improved, the stability is good, and the storage, transportation and use are facilitated.

The invention relates to the technical field of belt conveyors, in particular to a belt conveyor carrier roller set which comprises a bottom plate, two fixing plates are symmetrically arranged at the upper end of the middle of the bottom plate, a main roller wheel is rotationally connected between the two fixing plates, functional parts are movably installed at the outward ends of the two fixing plates, a bidirectional screw is arranged on the upper side of the bottom plate and penetrates through the two fixing plates, and the main roller wheel is rotationally connected with the two fixing plates. The fixing plate is rotationally connected with the two-way screw, the left end and the right end of the two-way screw are rotationally connected with bearing seats, the two bearing seats are arranged at the upper end of the bottom plate, the outer end of the two-way screw is symmetrically in threaded connection with two sliding blocks, the two sliding blocks are slidably connected to the upper end of the bottom plate, and the upper ends of the two sliding blocks are movably provided with supporting arms; by means of the design, the V-shaped structure on the upper portion of the conveying belt can be adjusted in time in the conveying state, the leakage probability of materials is effectively reduced, the conveying effect and efficiency are effectively guaranteed, and the materials are effectively and normally conveyed.

The invention relates to the technical field of polarizing beam splitters, in particular to a polarizing beam splitter and a preparation method and application thereof. The polarizing beam splitter provided by the invention comprises a diamond substrate, a polarizing beam splitting film and a first metalized film layer which are positioned on the surface of one side of the diamond substrate, a broadband antireflection film positioned on the surface of the other side of the diamond substrate, and a second metalized film layer positioned on the side surface of the diamond substrate, the first metallized film layer is located at the edge position of the surface of one side of the diamond substrate. Diamond is adopted as a substrate material of the polarizing beam splitter, and the characteristic of high thermal conductivity of the diamond is utilized, so that heat generated when laser acts on a film layer and a substrate can be quickly conducted as soon as possible, and damage to the polarizing beam splitter caused by local temperature rise is relieved; the edge of the polarizing beam splitter is metalized, so that the beam splitter body and a metal tube shell or a water cooling structure can be integrally welded, and a high-reliability and low-leakage-rate vacuum sealing solution can be provided while the heat conduction efficiency is improved.

The utility model relates to the technical field of medical auxiliary supplies, in particular to a three-cavity valve urethral catheter, which aims to solve the problems of the existing urethral catheter, and adopts the scheme that a water filling nozzle tube, a liquid outlet tube and a liquid inlet tube are jointly connected to the tail end of a catheter body, a hole groove is formed in the side part of the head end of the catheter body, and a balloon arranged on the catheter body is arranged behind the hole groove. A urination channel, a flushing channel and a liquid filling channel are arranged in the catheter body, and the water injection nozzle tube, the liquid filling channel and the balloon are sequentially connected to form an inflation channel. The liquid outlet tube, the urination channel and the head end of the tube body are sequentially connected to form a catheterization channel; the liquid inlet pipe, the flushing channel and the hole groove are sequentially connected to form a flushing passage; the water injection port pipe is further connected with a water injection hard valve, threads are arranged on the inner wall of the water injection hard valve, the pressure reducing device is in threaded connection with the water injection hard valve, and valves are arranged in the liquid outlet pipe and the liquid inlet pipe. And the valve in the liquid outlet pipe and the valve in the liquid inlet pipe are arranged in opposite directions. According to the scheme, the risk of retrograde infection of a patient is effectively reduced.

The invention discloses an underground diaphragm wall joint structure and a construction method. The underground diaphragm wall joint structure comprises a reinforcement cage; the first clamping part is arranged at one end of the reinforcement cage and comprises a first clamping section and a second clamping section which are sequentially arranged in the width direction of the reinforcement cage; the second clamping part is correspondingly arranged at the end, away from the first clamping part, of the reinforcement cage and comprises a third clamping section and a fourth clamping section; when the first clamping part and the second clamping part on the adjacent reinforcement cages are connected, the first clamping section and the third clamping section form a first fixed waterproof structure, the second clamping section and the fourth clamping section form a second fixed waterproof structure, and a containing cavity is formed between the first fixed waterproof structure and the second fixed waterproof structure; and the water stop material is arranged in the containing cavity to form a cross-section layer, so that the containing cavity part serves as a reinforced waterproof structure. The underground diaphragm wall joint structure can improve the waterproof and anti-seepage effect of the joint of the underground diaphragm wall, the joint is prevented from deforming during construction, and meanwhile the connection strength of the joint is guaranteed.

The utility model provides a limit structure for realizing convenient assembly of a static pressure box body and a filter, the filter is pushed upwards from the lower part of the static pressure box body to be assembled, the lower part of the periphery of the filter is provided with a liquid tank, the liquid tank is filled with jelly glue, and a bent edge I inserted into the jelly glue is arranged between the periphery of the filter and the inner wall of the static pressure box body; the limiting structure comprises a limiting block, the limiting block is located above the first bent edge, and the outer side of the limiting block is installed on the inner wall of the static pressure box body. The inner side of the limiting block is divided into a guide part and a limiting part from bottom to top, and the minimum distance between the limiting part and the outer side of the filter is smaller than or equal to 3 mm. According to the limiting structure for achieving convenient and fast assembly of the static pressure box body and the filter, the limiting blocks are installed on the inner walls of the periphery of the static pressure box body, so that the filter can be installed in a blind mode according to guiding of the limiting blocks in the installation process, and the static pressure box body and the filter cannot generate an overlarge deviation phenomenon; and the bent edge of the inner wall of the static pressure box body is inserted into the center of the liquid tank.

The present invention discloses a bearing common cavity lubrication and sealing structure, including a rotating shaft, a high-speed rotor for transmitting high speed and a clearance match with the rotating shaft, a front bearing seat assembly for fixing in a casing and supporting the high-speed rotor, a low-speed rotor for transmitting low speed and a rear bearing seat assembly for fixing in a casing and supporting the low-speed rotor, the rotating shaft, the high-speed rotor, the front bearing seat assembly, the rear bearing seat assembly and the low-speed rotor enclose a bearing cavity for installing multiple bearings, a lubrication assembly is arranged in the bearing cavity, the end of the front bearing seat assembly away from the rear bearing seat assembly includes a double-stage floating ring graphite sealing structure sleeved on the outside of the high-speed rotor, and the end of the rear bearing seat assembly away from the front bearing seat assembly includes a single-stage floating ring graphite sealing structure sleeved on the outside of the low-speed rotor. In addition, the present invention also discloses an aircraft engine.

The utility model belongs to the technical field of waterproof of lower room structures, and particularly relates to a waterproof and anti-leakage structure of a basement connection node. In order to solve the problems that complex water seepage paths are difficult to resist, the maintenance cost is increased due to inconvenience in disassembly and maintenance and a waterproof layer is easy to crack due to insufficient deformation coordination of a rigid assembly and a wall body in the existing single-layer waterproof or permanent fixed installation design, the following scheme is provided: the waterproof structure comprises an existing wall body and a newly-built wall body; a multi-stage water seepage blocking path is formed through the inner waterproof layer and the water stop steel plate, and even if a single layer is damaged, underground water pressure can still be effectively resisted; quick disassembly and assembly are achieved through threaded connection and a clamping structure, wall damage is avoided, and the maintenance cost is remarkably reduced; the flexible coiled material and the sealing rubber strip absorb structural deformation displacement, the fixing block embedment design limits displacement of the waterproof belt, long-term stability under dynamic loads is ensured, and the technical problems that a traditional waterproof layer cracks, is difficult to maintain and poor in adaptability are comprehensively solved.

The invention belongs to the technical field of capacitance testing machines, and particularly relates to a multi-track chip type capacitance testing machine. Comprising a shell, a base, a negative pressure assembly, a driving motor, a feeding assembly, a discharging hopper, a testing assembly and an interface operation assembly, the interface operation assembly is arranged on the shell, the negative pressure assembly, the testing assembly and the driving motor are arranged on the base, the feeding assembly is obliquely arranged on the base, and the feeding assembly comprises a material disc and a material bin; the driving motor is in transmission connection with the material disc, the discharging hopper is arranged on the base and used for supplying materials to the material bin, the material bin is arranged on the base and slidably abuts against an ascending section in the rotating direction of the material disc, a plurality of material holes are formed in the material disc, the negative pressure assembly is communicated to the material holes and used for adsorbing capacitors, and the lower side wall of the material bin is tangent to the outer side edges of the material holes. The capacitor rotates along with the material disc and collides with the lower side wall of the material bin so as to be adsorbed in the material hole; the feeding rate of a feeding point position in the feeding device can be increased when a large amount of materials are fed.

The utility model discloses a pump room fire-fighting pipeline modularization rapid installation structure, and relates to the technical field of fire fighting. The device comprises a first pipeline and a second pipeline, wherein a modularized fixing assembly is fixedly connected between the first pipeline and the second pipeline. The six threaded rods can be synchronously driven to rotate at a constant speed through the driving gear-gear ring meshing transmission mechanism, the traditional manual one-by-one screwing operation is shortened to be within 2 minutes, the single pump room pipeline installation efficiency is greatly improved, the driven gear and the threaded rods are coaxially fixed, the consistency of pretightening force of all bolts is ensured, errors are reduced, and the working efficiency is improved. A hexagonal groove in the top of the driving shaft is compatible with an electric wrench and a hydraulic driving device, mechanical operation is supported, dependence on artificial experience is thoroughly eliminated, and the device is particularly suitable for pump room construction in high altitude or narrow space; and operators are liberated from high-strength stooping and climbing operation.

The utility model relates to the technical field of locks, in particular to an intelligent lock protection mechanism which comprises a protection device. Wherein the protection device comprises a fingerprint identification key mounting frame, a sealing door is hinged to the interior of the fingerprint identification key mounting frame, a sponge cleaning block is bonded to one end of the sealing door, a locking structure clamped with the fingerprint identification key mounting frame is mounted in the sealing door, and in the rotating process of the sealing door, the sponge cleaning block is connected with the fingerprint identification key mounting frame in a clamped mode. The sealing door drives the sponge cleaning block to rotate to erase residual fingerprints and dirt on the surface of the fingerprint identification key, so that the surface of the fingerprint identification key is always kept clean, interference of the fingerprint identification key on fingerprint identification can be guaranteed, the success rate of fingerprint identification is improved, the probability of fingerprint leakage can be reduced, and the user experience is improved. And the safety coefficient of the intelligent lock is improved.

The invention relates to an automatic inner cover press-in device which comprises a rack, a press guide mechanism, a positioning mechanism, a clamping mechanism and an inner cover feeding mechanism, the press guide mechanism is mounted on the rack, the positioning mechanism is mounted on the press guide mechanism, the clamping mechanism is mounted on one side of the press guide mechanism, and the inner cover feeding mechanism is mounted on the rack. The inner cover feeding mechanism is mounted on the other side of the press guide mechanism; the positioning mechanism is provided with a positioning block and a positioning cylinder, the clamping mechanism comprises a clamping block and a clamping cylinder, and the positioning block and the clamping block are provided with clamping surfaces; the inner cover feeding mechanism comprises an inner cover feeding assembly and an inner cover feeding assembly, the inner cover feeding assembly comprises a feeding driving air cylinder, a feeding bottom push plate and an inner cover feeding barrel, and the feeding driving air cylinder drives the feeding bottom push plate to drive the feeding bottom push plate to push an inner cover located at the lowermost end of the inner cover feeding barrel to move towards the upper portion of the box body; and the inner cover and the box body are pressed together through a press guide mechanism. The automatic press-in device for the inner cover is ingenious in structure, and the sealing performance between the inner cover and the box body or the bottle body can be effectively guaranteed.

The present invention provides a MEMS sensor, comprising: a substrate and a cover plate; the substrate comprises a MEMS structure, a first inner welding ring arranged around the MEMS structure, and a first outer welding ring arranged around the first inner welding ring; the cover plate comprises a second inner welding ring and a second outer welding ring arranged around the second inner welding ring; the substrate and the cover plate are welded together through the first inner welding ring and the second inner welding ring to form a first sealing structure, and the first sealing structure confines the MEMS structure in a vacuum cavity; the substrate and the cover plate are welded together through the first outer welding ring and the second outer welding ring to form a second sealing structure, and a vacuum sandwich cavity is formed between the second sealing structure and the first sealing structure. According to the embodiments of the present invention, the gas leakage rate can be greatly reduced, and the reliability and life of the MEMS sensor can be improved.

The utility model discloses a building integrated photovoltaics (BIPV) guide rail type water guide groove connecting structure and a water guide assembly, the connecting structure comprises a supporting groove and a limiting piece, the limiting piece is located on the inner bottom wall of the supporting groove and longitudinally extends along the supporting groove, the cross section of the limiting piece is T-shaped, the limiting piece is used for being embedded with a guide groove in the outer bottom wall of the water guide groove, and the two ends of the supporting groove are open. The supporting groove is used for being inserted into the ends of the two water guiding grooves, the inner wall of the supporting groove can be attached to the outer walls of the water guiding grooves, first flat edges are arranged at openings in the two sides of the supporting groove, second flat edges are arranged at openings in the two sides of the water guiding grooves, the first flat edges are attached to the second flat edges, and locking pieces are arranged on the first flat edges and the second flat edges. The connecting structure is used for limiting the relative displacement of the supporting groove and the water guiding groove in the longitudinal direction and is good in waterproofness, good in wind uplift resistance and easy to install. The water guide assembly has long-acting water resistance and structural stability in a complex environment, and is simple in structure, convenient to disassemble and assemble, convenient to machine, low in material consumption and large in water guide amount.

The gate valve with the gas detection function comprises a valve body, a gas inlet, a gas outlet, a valve cover, a threaded column and a pressure sensor, the gas inlet is formed in the front side of the valve body, a gas inlet baffle is arranged on the rear side of the gas inlet, the gas outlet is formed in the rear side of the valve body, a gas outlet baffle is arranged at the front end of the gas outlet, and the valve cover is connected to the upper side of the valve body. Movable plates which are connected through movable connecting rods, movable grooves, limiting rods and springs are arranged in the first air conveying opening and the second air conveying opening, so that when the air pressure is too high, the movable plates are shrunk through impact of high-speed airflow, the movable connecting rods touch the pressure sensors, and therefore high-pressure alarming is completed; the air flow can also enter the three-way pipe at the bottom of the valve plate through the first air conveying port, and when the air pressure is too large, the three-way pipe can contract to give an alarm, so that the air pressure of the air can be detected no matter the flowing air flow is closed.

The present application provides a kind of pasting equipment and processing method of lees flavor freeze-dried food, to solve the technical problem that the paste of traditional paste work is avoided to avoid the continuous increase of air pressure in sealed paste space during paste process, and the loss of heat resources and the continuous reduction of water content in paste space material affect paste effect.The paste equipment of lees flavor freeze-dried food includes lower bucket unit and lower bucket unit.The lower bucket body is used for the accommodation of raw materials, which is heated by heating element.The piston assembly of upper bucket unit is installed in the upper bucket body.The upper bucket body and the lower bucket body are synchronously rotated around the vertical axis under the drive of the drive assembly.When the upper bucket body is attached to the top end of the lower bucket body, the upper bucket body and the lower bucket body form a sealed paste space.The piston of piston assembly is slidingly connected in the upper bucket body, and the air pressure of paste space can be adjusted.The present application also provides a processing method for paste using the aforementioned paste equipment, and the paste effect is excellent.

The application discloses an intrinsically safe isolated copper sheath fireproof cable, which comprises a copper sheath and a plurality of conductors, the plurality of conductors are uniformly distributed in the copper sheath, the copper sheath has high melting point and thermal stability, an air bag is arranged between two adjacent conductors, the air bag is filled with expansion material, the expansion material expands under heat, a heat insulation layer is arranged between the copper sheath and the conductors, the heat insulation layer is made of silicone rubber base material, the silicone rubber base material has high elasticity and thermal stability, a plurality of grooves are formed on the surface of the copper sheath, the grooves correspond to the conductors one by one, the plurality of conductors form a cavity, and a pushing piece is arranged in the cavity and used for pushing the conductors to move. The application has the effect of fireproof cable flame retardation.

The utility model discloses a universal ball bearing, universal ball bearing includes main body, load ball and oil storage spare, the main body includes first end and second end, first end has first chamber, the second end has and receives the cavity of oil injection hole, oil injection hole is connected between the receiving cavity and outside, the receiving cavity is connected in first chamber, load ball is located first end, and can rotate relative to the main body, load ball is limited in first end, and load ball's part is located in first chamber, and another part protrudes from first end, oil storage spare is located in the receiving cavity, and oil storage spare is used for absorbing lubricating oil from the injection hole injection, and can automatic injection to first chamber, the universal ball bearing in the utility model is convenient to oil injection, and can avoid the waste of lubricating oil, and the utility model relates to the field of conveying spare.

The invention discloses a pre-tightening-force-free metal sealing ring which comprises an outer supporting ring, an inner supporting ring and an elastic supporting piece, the inner supporting ring is installed in the outer supporting ring, and the elastic supporting piece is installed in the inner supporting ring; grooves are embedded in the upper end face and the lower end face of the outer supporting ring, sealing strips are installed in the grooves, and the sealing strips are metal strips. The invention belongs to the technical field of sealing rings, and particularly relates to a metal sealing ring without pretightening force.

The utility model discloses an efficient integrated pretreatment system, which relates to the technical field of automatic temperature control devices and comprises a visible washing tank, a two-way needle valve is arranged at the bottom of the visible washing tank, a gas-liquid separator is communicated with the side surface of the visible washing tank, a pretreatment cabinet is arranged on the outer side of a pretreatment cabinet, and a gas-liquid separator is communicated with the gas-liquid separator. The side face of the gas-liquid separator is communicated with the membrane filter through the adjustable flow meter, the zero-point gas switching loop is arranged on the side face of the silica gel tank, by means of the pretreatment system, the replacement number of pressure reducing valves is reduced, the maintenance cost is saved, meanwhile, the liquid level is convenient to adjust through the visual water washing tank, the water washing effect is improved, and the water washing efficiency is improved. The pretreatment system is relatively high in desulfurization and sealing performance, the leakage rate of equipment is reduced, and meanwhile, the risk of pollution of a gas chamber of an online analyzer is reduced. Two paths of switchable desulfurization tanks are adopted, so that continuous and uninterrupted online measurement and online desulfurization agent replacement are realized.