25results about How to "Adjustable pressure" patented technology

This utility model belongs to the technical field of mechanical parts inspection tools, and relates to a workpiece inner cone theoretical diameter difference gauge. It includes a base, a reference seat and a measuring frame on the base. The measuring frame includes a support column, a cylinder, a measuring frame pressure plate, and a guide positioning mandrel. The support column is mounted on the base, and the cylinder is mounted on the support column. The measuring frame pressure plate is connected to the cylinder via a universal joint. The guide positioning mandrel is located at the center of the measuring frame pressure plate. The outer diameter of the measuring frame pressure plate is the same as the theoretical outer diameter of the workpiece. The guide positioning mandrel has a conical guide surface adapted to the inner cone of the workpiece. This utility model, through precise structural design and positioning method, uses the workpiece reference surface as the positioning reference, uses the measuring frame pressure plate to locate the theoretical diameter of the workpiece's conical inner hole, and measures the distance from the circumference of this theoretical diameter to the end face of the reference seat using an indicator. This improves the stability and accuracy of the measurement, is easy to operate, and saves labor.

The utility model relates to valve technical field, and disclose a kind of pressure reducing type backflow preventer, including valve body, drain valve seat, drain valve flap, long valve rod, fixed screw, valve cover, the valve body is provided with drain valve seat, the drain valve seat inside is provided with drain valve flap, the drain valve flap upper side is provided with long valve rod, the valve body upper side is provided with valve cover.The pressure reducing type backflow preventer, by first valve seat, first valve flap, first main valve rod, first spring seat, first spring and first hexagon nut are assembled to it before being loaded into valve body, subsequent and present an integral loading into valve body inside, greatly shorten assembly time, also suitable for the assembly in the valve body of smaller volume, the unique flow passage design of two-stage check valve, small flow resistance, open and close speed is fast, can effectively prevent the damage of sudden back pressure rise to valve and pipeline, limit pressure water backflow or siphon backflow, with mute function, effectively prolong the service life of valve.

The utility model relates to the technical field of nylon tape traction devices, in particular to a nylon tape traction device with buffering and steering functions, which comprises a base, a cable guide, a bearing component, a buffering mechanism and a reel. The cable guide is connected with the base; the reel is vertically fixed on the base through a support frame, and a nylon tape is wound on a winding drum of the reel; the bearing assembly comprises a first bearing and a second bearing which are oppositely arranged, the first bearing is fixed to the base through a support, the second bearing is connected with the buffering mechanism, and the buffering mechanism is arranged on the base; and the nylon tape sequentially bypasses the first bearing and the second bearing and then is steered by the cable guider to vertically extend. By arranging a buffering mechanism, the impact load borne by the bearing is effectively reduced, and the service life of the device is prolonged; by arranging the first bearing, the second bearing and the cable guide, steering of the nylon belt is achieved, the structure is simple and easy to achieve, and buffering and direction switching are synchronously completed under the impact working condition in cooperation with the arrangement of the buffering mechanism.

The utility model relates to the technical field of engineering construction, in particular to an adjustable counterweight type rubber-tired road roller capable of simulating the acting force of each structural layer when an aircraft walks under the load of tires, and the pressure of a rubber wheel acting on the structural layer is adjusted by adjusting the weight of a counterweight, so that the pressure required by each structural layer during load verification is adapted, and the working efficiency is improved. The adjustable counterweight type rubber wheel road roller is simple in structure and high in adjusting efficiency, the construction progress is accelerated, and the construction efficiency is improved, the adjustable counterweight type rubber wheel road roller comprises a frame, the frame is provided with a chassis and a rubber wheel, the chassis is provided with a counterweight cabin, the counterweight cabin is provided with a plurality of detachable counterweight blocks, and the pressure of the rubber wheel acting on the ground is adjusted by disassembling and assembling the counterweight blocks. The road roller has the advantages that the detachable balancing weights are arranged on the chassis, and the weight of the frame can be adjusted by increasing or decreasing the balancing weights, so that the pressure applied to the ground by the rubber wheels is adjusted, the pressure applied to the ground by the rubber wheels is adjustable, and the pressure requirement of each structural layer on the road roller when the bearing capacity is verified is met.

The invention provides a continuous pressure regulation optimization method of an emergency throttle valve and the emergency throttle valve. The method comprises the following steps: S1, establishing an optimization target; s2, setting initial parameters; s3, performing opening degree simulation on the conical valve head; s4, selecting an angle value of a cone angle of the valve head, and performing opening degree simulation on the piecewise function type valve head; s5, adjusting an angle value of a cone angle of the valve head, and performing opening degree simulation of throttling ports at different displacement positions of a valve core on the piecewise function type valve head; and S6, adjusting the outlet aperture of the outlet channel to carry out openness simulation, and determining the outlet aperture value of the outlet channel. According to the invention, continuous pressure regulation and pollution resistance of the emergency throttle valve under the condition of constant flow are taken as improvement targets, the structure of the cone angle of the valve core and the valve head is improved, and a logarithmic function form is adopted, so that the drainage basin of the emergency throttle valve is streamlined, and pollution particles in oil can easily flow out of the emergency throttle valve along with hydraulic oil; pollution particles are prevented from being retained in the valve, the cone angle of the valve head is variable, and then continuous change of pressure is achieved.

The application relates to a bridge crossing structure and method suitable for air cushion vehicle walking, and belongs to the technical field of large transformer transportation equipment. The technical scheme is as follows: a first movable bridge deck (3) and a second movable bridge deck (4) are both right-angled trapezoids or right-angled triangles, the first movable bridge deck (3) and the second movable bridge deck (4) are combined to form a rectangular bridge deck, the rectangular bridge deck is provided with sealing materials (8) on two long sides, the rectangular bridge deck is arranged on a movable support (6), the movable support (6) is rotatably connected to a fixed support (5) through pin shafts (7) at two ends, the fixed support (5) is fixed on a ground base, a first hydraulic cylinder (1) is drivingly connected to the movable support (6), and a second hydraulic cylinder (2) is drivingly connected to the first movable bridge deck (3). The application has the beneficial effect that the contact surfaces on both sides of the bridge deck are sealed in air tightness by the sealing materials.

The utility model relates to the technical field of wastewater recycling, in particular to an incineration wet-process high-salinity wastewater recycling system. The incineration wet-process high-salinity wastewater recycling system comprises a wet-process deacidification tower and a high-salinity wastewater treatment tank, a siphon piece which enables the wet-process deacidification tower and the high-salinity wastewater treatment tank to be communicated with each other is installed between the wet-process deacidification tower and the high-salinity wastewater treatment tank, and a filtering piece is connected to the siphon piece, so that pretreatment of most suspended solids and part of precipitated salt particles in high-salinity wastewater is achieved; the problems of pipeline resistance and scaling at the rear end are reduced, the use of the pump body can be effectively reduced by utilizing the siphon piece, and the production cost is reduced; the gas outlet end of the high-salinity wastewater treatment tank is communicated with a buffer tank, the water outlet end of the buffer tank is connected with a flow adjusting part, the water outlet end of the flow adjusting part is connected with a quenching spray tower, and the gas inlet end of the quenching spray tower is communicated with the wet deacidification tower and the gas outlet end of the buffer tank through pipelines, so that the pipeline pressure and the pipeline flow can be adjusted, and the system load is reduced; and cooling emission of high-temperature flue gas is realized.

This invention discloses a multifunctional vertical hydraulic jack and its usage method, relating to the field of hydraulic jack technology. The jack body is equipped with an oil tank and a lifting chamber, with a lifting piston rod slidingly mounted inside the lifting chamber. A pressurizing component draws oil from the oil tank through a suction pipe and pressurizes the hydraulic oil into the lifting chamber through a pressure pipe to achieve lifting. The pressure pipe includes a first pressure chamber, a second pressure chamber, a pressure spring, and a pressure adjusting screw for adjusting the oil circuit flow and pressure. A clearing pipe connected to one side wall of the pressure chamber allows high-pressure hydraulic oil to be discharged to the outside of the jack body for flushing equipment joints or internal oil circuits. A return oil pipe connects the oil tank and the lifting chamber, with the return oil controlled by a return screw. Furthermore, a hollow cavity is provided at the axis of the lifting piston rod, allowing for the detachable installation of a screw to achieve a pulling function. This invention integrates lifting, high-pressure flushing, and pulling functions, improving the practicality and applicability of the jack.

The utility model relates to mechanical manufacturing technical field discloses a kind of clamping positioning tool of commercial cleaning vehicle upper cover bonding piece, including bottom plate, the upper surface of the bottom plate is provided with tool bottom support, the inner wall of the tool bottom support is fixedly connected with stick plate, the inside screw thread connection of the tool bottom support has nut, the upper surface of the stick plate is fixedly connected with second stick piece, the outer wall of the nut and the inner wall of clamping groove are inlaid, the upper surface of the stick plate is sticked and is connected with third stick piece, the upper surface of the third stick piece is fixedly connected with second tool, the upper surface of the bottom plate is provided with clamping assembly, the clamping assembly is prevented from moving when installing with clamping tool bottom support.The utility model in the two-way screw rod rotation makes the clamping plate sliding in the inside of bottom plate with outer wall screw thread connection, to clamp and fix to device, ensure workpiece accurate positioning, avoid deviation when bonding, reach guarantee bonding position consistency, the effect of adaptation batch production demand.

The application aims to provide a superheat control type ammonia fuel supply system based on fuel activity design, belonging to the field of fuel supply, comprising a liquid ammonia common rail type supply system, a diesel common rail type supply system, a fuel injection device, a superheat control unit and other components of an engine. Hydroxyl-rich gas is used as a combustion-supporting agent instead of pure hydrogen fuel. The safety of the system is ensured, the dynamic thermal management characteristics during engine operation are fully considered, ammonia fuel superheat control is performed, and the direct control form of the sleeve type valve rod strong magnetic force electromagnetic actuator is adopted for the ammonia fuel injection of the application, realizing high response and precise injection of the double fluid mixed gas. The electromagnetic actuator structure of the multi-hole valve rod is adopted to realize the rapid response of the control valve and the separation of the servo oil circuit and the supply oil circuit; the new valve rod structure is adopted to reduce the weight of the valve and the electromagnetic force demand, improve the response performance, and fundamentally avoid the cavitation problem caused by the traditional control valve structure.

The utility model discloses a nitrogen making machine adsorption tower with a carbon molecular sieve protection structure, which belongs to the technical field of nitrogen making machine adsorption towers and comprises an adsorption tower body, a gas inlet pipeline is arranged at the bottom end of the adsorption tower body, a nitrogen outlet pipe is arranged at the top end of the adsorption tower body, and an oxygen outlet pipe is arranged in the middle of the adsorption tower body. The gas inlet pipeline, the oxygen outlet pipe and the nitrogen outlet pipe are respectively provided with a control valve. The device further comprises a lower sliding plate, a carbon molecular sieve and a protection structure. According to the adsorption tower, entering air is uniform in the adsorption tower body, the impact on the carbon molecular sieve is reduced, meanwhile, the carbon molecular sieve is pressed by the pressing mechanism, the constant pressure of the carbon molecular sieve is kept, and the carbon molecular sieve is prevented from being greatly abraded during operation, so that the carbon molecular sieve can be stably operated, and the service life of the adsorption tower is prolonged. The effect of reducing pulverization loss caused by mutual abrasion of the carbon molecular sieves is achieved, and reduction of the nitrogen production amount is avoided.

According to the cloth pressing roller, an existing cloth pressing roller is usually made of metal, the downward pressing force is usually constant, the downward pressing force of the cloth pressing roller can only be adjusted and controlled through supporting equipment, and therefore friction force generated by downward pressing is adjusted. When a programmable and adjustable cloth pressing roller bracket is not arranged, especially in a traditional nylon belt hanging mode, a traditional cloth pressing roller is extremely prone to generating large friction force, and serious abrasion is caused to a cloth cover. The cloth pressing roller comprises an outer roller rod, a hollow shaft rod and a steering connector. Wherein the outer roller rod and the hollow shaft rod are coaxially arranged, and the hollow shaft rod is sleeved with the supporting discs at equal intervals; a steering joint is arranged at one end of the hollow shaft rod; the two ends of the outer roller rod are provided with closed round pieces, the closed round pieces are bonded with the outer roller rod, and the contact edges of the closed round pieces and the hollow shaft rod are bonded through a dissoluble adhesive.

The invention relates to the technical field of wood mirror frame processing, and provides wood mirror frame continuous processing equipment which comprises a rack, a feeding mechanism is arranged at one end of the top of the rack, a cutting mechanism is arranged in the middle of the rack and comprises a first mounting frame fixedly connected to the top of the rack, and first air cylinders are fixedly connected to the two ends of the top of the first mounting frame; the output ends of the two first air cylinders are fixedly connected with the same movable plate, a first motor is fixedly installed at the bottom of the movable plate, an output shaft of the first motor is fixedly connected with a cutting knife wheel, and a knife groove is formed in the top wall of the rack. A rotating disc is rotationally connected to the rack, a driving assembly matched with vertical sliding of the movable plate to drive the rotating disc to rotate intermittently is arranged at the bottom of the rack, a grinding mechanism is arranged at one end of the rotating disc, and a conveying belt is arranged at the discharging end of the grinding mechanism. Through the innovative design, the efficiency, precision, automation and adaptability are remarkably improved.

A forming assembly of a hot bending machine comprises an upper forming assembly and a lower forming assembly, the upper forming assembly comprises a fixing support, the fixing support is provided with a front portion and a rear portion, one or more pressurizing assemblies are arranged on the front portion of the fixing support, and one or more pressurizing assemblies are arranged on the rear portion of the fixing support; the pressurizing assembly comprises a driving device, the driving device is provided with an output shaft, the output shaft is provided with a connecting block, and the bottom of the connecting block is connected with a forming upper heating plate; the lower forming assembly comprises a forming lower heating plate, and a mold needing hot bending operation is located between the forming upper heating plate and the forming lower heating plate. And the multiple sets of pressurizing assemblies push the forming upper heating plate to apply pressure to the mold, and the pressure applied to all the positions of the mold can be adjusted conveniently.

The utility model relates to electrolyte cleaning device technical field especially relates to a kind of spray type electrolyte aluminum residual pole high-efficiency cleaning device, there is inclined support, inclined support inside fixedly arranged with cleaning cylinder, cleaning cylinder is arranged with the inclination angle, still including filter cartridge, rotatable filter cartridge is arranged in the inner chamber of cleaning cylinder, its inclination angle is consistent with cleaning cylinder, the inner chamber top side of cleaning cylinder is fixedly arranged with the spray pipe extending along the direction of inclination, spray pipe is located above filter cartridge, its spray hole is directly opposite filter cartridge top area, spray pipe and cleaning cylinder keep same inclination angle, multiple groups of holes are throughly set up on the outer circumferential surface of cleaning cylinder, and multiple groups of flexible protrusions are fixedly arranged in its inner chamber inner wall, a kind of spray type electrolyte aluminum residual pole high-efficiency cleaning device of the utility model in use process, 360 ° dead angle cleaning is realized, compared with traditional soaking type cleaning efficiency is improved, so that the automatic high-efficiency cleaning of electrolyte aluminum residual pole fragment can be realized.

The application relates to the technical field of high-efficiency hot forging, and discloses a large-tonnage high-efficiency hot forging equipment which comprises an oil pressure device for providing power output and an oil pipe loop system for realizing oil circuit control and energy management. The large-tonnage high-efficiency hot forging equipment realizes energy storage and recycling through cooperation of an accumulator group and a variable oil pump group in the oil pipe loop system. In an initial stage, the variable oil pump group charges the accumulator to reserve energy, and in a return stroke stage, the accumulator group recycles energy through the oil pump. Compared with a traditional single main oil cylinder driving equipment, the energy consumption is greatly reduced, the problem that power demand increases rapidly with the increase of tonnage and leads to a sharp increase of power grid load is solved, the quick cylinder in the oil pipe loop system is controlled by an independent cartridge valve, the oil circuit is integrated with a two-way cartridge valve to realize millisecond-level response, the quick cylinder can complete the air travel drop in a short time, the accumulator group is connected to the main oil cylinder inlet through high-pressure hoses in parallel, and the volume of oil liquid is instantaneously released to push the main oil cylinder, so that the system reaches large-tonnage output.

The utility model discloses an automatic laminating machine of packing box relates to laminating machine technical field, including first casing, horizontal installation is used for conveying plastic film's conveying belt in first casing, rotatable gluing roller is installed in first casing inside, the axial direction of gluing roller is perpendicular with the transmission direction of conveying belt, glue box is installed in first casing inside, and the lower part of gluing roller is dipped in glue box and is used for dipping glue solution, be equipped with compression roller above gluing roller, and gluing roller is used for pressing plastic film to gluing roller surface, and compression roller is installed in first casing inside through the lift adjusting mechanism, and the lift adjusting mechanism is used for adjusting the height of compression roller, realizes the adjustment of compression roller height through the linkage of third connecting rod and fourth connecting rod and second air cylinder, ensures that the clearance pressure of compression roller and gluing roller is adjustable, and the evenness of glue coverage is optimized.

The utility model provides a fabric embossing device, and relates to the technical field of fabric embossing, the fabric embossing device comprises a mounting seat mechanism, an embossing mechanism is mounted on the mounting seat mechanism, and pressure applying mechanisms are mounted on two sides of the mounting seat mechanism; the mounting seat mechanism comprises a fixing seat, a fixing bottom plate is fixedly connected to the lower surface of the fixing seat, side mounting plates are fixedly connected to the two sides of the upper surface of the fixing seat, a rotating shaft is rotatably mounted between the upper ends of the two side mounting plates, and a conveying roller is fixedly connected to the surface of the rotating shaft; by means of the technical scheme, when the first motor drives the knurling roller to be matched with the conveying roller to conduct knurling processing on cloth, the second motor drives the pressing roller to ascend and descend, the pressing roller is located on the two sides of the knurling roller and abuts against the cloth, and then the pressing pressure of the knurling roller on the cloth can be adjusted; therefore, the effect of adjusting the embossing depth is achieved, and embossing processing can be carried out on fabrics with different thicknesses.

The utility model discloses an energy accumulator, which relates to the technical field of fluid energy storage equipment and comprises an energy accumulator body, a piston, a heavy hammer and an air bag, the energy accumulator body comprises an energy accumulator cylinder body; the lower portion of the energy accumulator cylinder body is provided with an oil inlet connector, an oil discharge connector and an oil supply port, and the upper portion of the energy accumulator cylinder body is provided with an oil recovery port. The piston, the heavy hammer and the air bag are arranged in the energy accumulator cylinder body; the heavy hammer is arranged above the piston; an air bag is arranged in a central groove in the lower part of the piston; the piston lifting device comprises a driving unit and a pulley mechanism; the driving unit is connected with the pulley mechanism, and the pulley mechanism is connected with the piston, so that when the piston, the air bag and the heavy hammer act together, the effect of the heavy hammer energy accumulator which assists in increasing the pressure regulating reaction speed through the air bag is achieved; or when the driving unit, the pulley mechanism, the piston, the heavy hammer and the air bag act together, the effect of the heavy hammer energy accumulator which can adjust the output pressure through the driving unit and can assist in improving the pressure adjusting reaction speed through the air bag is achieved.

The utility model relates to paper cutting machine technical field discloses a high -speed paper cutting is with hob structure and paper cutting mechanism, including machine body, one side fixed mounting of machine body has the material delivery cavity, the inside of machine body is equipped with second rotating lever, the outside fixed connection of second rotating lever has hob body, the inside rotation of machine body is installed with two first rotating lever, the outside surface fixed mounting of two first rotating lever has a plurality of briquettes, the inside of briquette is equipped with positioning assembly, positioning assembly includes expansion spring and arc block, arc block sets up at the bottom of briquette, and the top surface extension of arc block is into the inside of briquette. In the utility model, through positioning assembly, can make arc block with paperboard have enough friction, arc block rotation, can ensure paper steady convey, also can position the direction of paper conveying, prevents the situation of paper conveying process and occurs and runs off.

This utility model discloses a pressure-stabilized laparoscopic puncture device, including a cannula assembly (1), a sealing cap (2), and a puncture cone (3). The cannula assembly (1) includes a cannula cap (101) and a pressure-stabilizing valve body (102). The side wall of the cannula cap (101) is provided with a valve body mounting groove (1011), and the pressure-stabilizing valve body (102) is installed in the valve body mounting groove (1011). The side wall of the cannula cap (101) is also provided with a cap air inlet passage (1012) and a cap exhaust passage (1013). Air is supplied to the pneumoperitoneum through the air inlet passage of the cannula assembly (1), and the pneumoperitoneum pressure is regulated and controlled through the exhaust passage. The pressure-stabilizing structure of this solution is adjustable, and the set pressure can be adjusted by turning the pressure knob to adapt to the protection of pneumoperitoneum at any pressure. When the pressure inside the pneumoperitoneum exceeds the set pressure, it is quickly discharged through the pressure-stabilizing structure.

The utility model discloses a kind of arrangement and positioning tool for hydraulic control hose of blowout preventer set, including bottom plate and movable cover plate, bottom plate and movable cover plate one end are hinged, bottom plate and movable cover plate other end detachably connect, bottom plate is equipped with multiple pipe placing groove for placing hydraulic control hose of blowout preventer set.The utility model is simple structure, easy to operate, can effectively fix and classify arrangement to multiple hydraulic control hoses, can improve installation and maintenance efficiency, and can guarantee the security, stability and aesthetic property of hose in running process.

This utility model discloses a corrugated roll testing machine, including a base, a drive mechanism, and a corrugated roll clamping mechanism and a pressure roll clamping mechanism slidably disposed on the base. The base has first and second guide rails, with a first bearing seat for clamping the lower corrugated roll and a third bearing seat for clamping the pressure roll slidably connected to the two guide rails respectively. The first bearing seat is hinged to a second bearing seat for clamping the upper corrugated roll, and the two can be radially oscillating to adjust the pressure. This corrugated roll testing machine can perform precision testing on corrugated rolls and pressure roll groups of different lengths and specifications through the sliding first and third bearing seats. By the radial oscillation of the second and third bearing seats, the pressure between the upper and lower corrugated rolls and the pressure roll can be adjusted, accurately simulating the actual working state of the corrugated rolls and pressure roll groups. It can accurately detect the flute symmetry accuracy and roll shape accuracy by using carbon paper indentation, solving the problems of poor adaptability, difficulty in simulating actual conditions, and inaccurate accuracy detection in existing testing methods.

The utility model discloses a kind of compression auxiliary devices for aluminium plate slitting, including slitting machine, the feed end of slitting machine is equipped with feed compression device, the discharge end of slitting machine is equipped with discharge compression device, the feed device includes feed limiting plate, feed limiting plate is connected feed moving frame by adjusting bolt one, rotatingly connected belt on feed moving frame, the discharge compression device includes discharge limiting plate, discharge limiting plate is connected discharge moving frame by adjusting bolt two, a plurality of moving frames are equipped on discharge moving frame, the lower end of moving frame is rotatably connected V-shaped frame, the lower end of V-shaped frame is rotatably connected sliding sleeve, sliding sleeve is slidably connected on fixed rod, the downside of sliding sleeve is equipped with rear compression wheel in pairs, and tensile spring is connected between rear compression wheel, the utility model is compressed to aluminium plate by the setting of feed compression device and discharge compression device, improve the stability when slitting, the size of pressure can be adjusted, different height aluminium plate cutting is suitable.

The application relates to an experimental device and a testing method for simulating natural gas pipeline leakage diffusion, and belongs to the technical field of natural gas pipeline leakage diffusion. The experimental device for simulating natural gas pipeline leakage diffusion comprises a natural gas cylinder, a methane concentration sensor, a soil pit, a simulation pipeline and an annular gradient support, the gas outlet of the natural gas cylinder is connected with one end of a pressure-resistant main hose through a first pressure-resistant branch hose, the other end of the pressure-resistant main hose is connected with a pipeline, the pipeline is provided with a simulation pipeline, the top of the simulation pipeline is provided with a leakage hole, a first electromagnetic valve is arranged in the leakage hole, and a plurality of methane concentration sensors are arranged above the simulation pipeline in a spaced mode. Beneficial effects: the sensors are arranged in the space near the top of the leakage hole in the soil and above the ground, a leakage monitoring area is formed above the leakage hole, a three-dimensional concentration field near the leakage hole under specific conditions can be obtained, and the diffusion law of natural gas from the soil to the atmosphere after the leakage of the buried natural gas pipeline can be understood.