600 results about "Plunger" patented technology

Housing equipped with greywater sorting equipment. This housing includes an analysis cell (60) comprising a siphon (80) installed in a greywater outlet pipe. This siphon comprises: - a fixed body (82) equipped with an inlet pipe (90) and an outlet pipe (92) whose axes (94) of revolution coincide, - a plunger (84) interposed between the inlet pipes (90) and outlet pipes (92) to force the greywater to descend to a lower part (110) of the siphon before rising towards the outlet pipe, - a removable base (86) which completely surrounds the lower part, and - a turbidity sensor (124) fixed, without any degrees of freedom, to the siphon to measure the turbidity of the greywater in the lower part (110) of the siphon or between the lower part and an inlet of the outlet pipe. Fig. 2

This invention belongs to the technical field of oil extraction equipment, specifically a tower-type intelligent control long-stroke beamless pumping unit, including a tower and a flexible rod pumping mechanism mounted on the tower; it also includes a plunger self-weight adjustment mechanism, which is used to adjust the weight of the pump plunger. By setting up the plunger self-weight adjustment mechanism, during the descent of the pump plunger, the total weight of the counterweight tube, sucker rod string, and pump plunger increases through the delivery of counterweight oil, thereby forcing the pump plunger to descend at a faster rate in the tubing. Before the pump plunger rises, the counterweight oil in the counterweight tube, sucker rod string, and pump plunger is discharged, thereby reducing the total weight of the counterweight tube, sucker rod string, and pump plunger, and thus reducing the pressure exerted by the counterweight tube, sucker rod string, and pump plunger on the drive components.

The present invention addresses the problem of providing a fuel supply system capable of appropriately controlling the amount of fuel supplied from a high-pressure pump to an in-cylinder injection valve of an engine in accordance with a change in the operating state of the engine. A fuel supply system is provided with: a high-pressure pump for supplying fuel stored in a fuel tank from a low-pressure fuel passage to an in-cylinder injection valve of an engine; and a control device that controls the high-pressure pump, the high-pressure pump including: a pressurizing chamber that pressurizes fuel in accordance with reciprocating motion of a plunger in conjunction with rotation of the engine; a suction passage communicating the low-pressure fuel passage and the pressurizing chamber; a discharge passage that communicates with the pressurizing chamber and the in-cylinder injection valve; an electromagnetic suction valve that adjusts the amount of fuel sucked into the pressurizing chamber from the low-pressure fuel passage; and a discharge valve which is provided in the discharge passage and which permits the flow of fuel from the pressurizing chamber side to the in-cylinder injection valve side but restricts the flow in the opposite direction.

This application relates to the field of sealing structure technology, specifically to a dynamic sealing structure for a servo motor system, a servo motor system, and an underwater vehicle. The dynamic sealing structure includes: a stern hull, a rudder shaft, a compensating plunger, a first sealing ring, and a viscous fluid medium. The stern hull has a mounting hole on its side wall for mounting the rudder shaft. The rudder shaft is disposed within the mounting hole, with its first end extending to the outside of the stern hull and its second end extending to the inside of the stern hull. The compensating plunger is slidably disposed between the mounting hole and the rudder shaft, and can slide along the axial direction of the rudder shaft, with one end of the compensating plunger contacting the outside of the stern hull. The first sealing ring is disposed between the outer periphery of the rudder shaft and the inner wall of the mounting hole, forming a sealing cavity with the stern hull, compensating plunger, rudder shaft, and first sealing ring. The viscous fluid medium fills the sealing cavity. Underwater vehicles incorporating this dynamic sealing structure have good sealing performance and can significantly reduce the risk of leakage.

The method for simulating the pack forming of a plunger slipper assembly of the application comprises the following steps: establishing a pack forming simulation model of the plunger slipper assembly; obtaining the inner contour characteristic parameters of the pack forming simulation model of the plunger; performing a pull-off simulation based on the pack forming simulation model of the plunger slipper assembly to obtain the axial clearance of the pack forming simulation model of the plunger slipper assembly; performing a rotation simulation based on the pack forming simulation model of the plunger slipper assembly to obtain the swing angle of the pack forming simulation model of the plunger slipper assembly; establishing a mapping database of the process parameters, the axial clearance of the pack forming simulation model of the plunger slipper assembly and the swing angle of the pack forming simulation model of the plunger slipper assembly; and establishing a multiple regression model of the inner contour characteristic parameters of the pack forming simulation model of the plunger, the axial clearance of the pack forming simulation model of the plunger slipper assembly and the swing angle of the pack forming simulation model of the plunger slipper assembly. The method can reduce the cost of raw materials and the cost of tests.

An adjustable pressure regulating valve controls gaseous fuel pressure for a fuel flow in a fuel system. The adjustable pressure regulating valve includes a housing with a spring chamber that houses a plunger spring. The plunger spring biases a pressure sensing plunger extending along the plunger spring to an open position relative to a valve seat. An adjustment mechanism is provided that allows the biasing force of the plunger spring to be externally adjusted without disassembly of the adjustable pressure regulating valve.

A balanced pneumatic regulator includes a body, an inlet seat element, a piston, and a piston plunger. The body includes a central axis extending through the body. The inlet seat element is fixedly positioned within the body, and the inlet seat element is fluidly coupled to a fluid inlet. The piston is positioned within the body downstream of the inlet seat element. The piston is configured 2024 / 098057 to translate axially along the central axis of the body. The piston includes an internal pressure chamber. The piston plunger is positioned least partially within the internal pressure chamber. During translation of the piston, a pressure on a downstream end of the piston is at least partially equalized by the pressure within the internal pressure chamber of the piston, which is supplied by fluid pressure from the fluid inlet to the piston plunger.

The utility model discloses a sliding type damping box, including upper connecting plate and the box of being located below upper connecting plate, the lower part fixedly connected with plunger of upper connecting plate, the right baffle and left baffle of opposite setting are equipped with in box inner chamber seal, the cavity formed by right baffle, left baffle and box is equipped with damping liquid, the lower part of plunger is inserted into damping liquid, the lower part both sides of upper connecting plate are fixedly connected with the right support plate and left support plate of inserting into the inner chamber of box, and the lower end of right support plate and left support plate respectively abuts with the sliding body of a plurality of located at the bottom of box. The utility model discloses the lower end of right support plate and left support plate abuts with a plurality of sliding bodies, can be used to bear the weight load of equipment, realizes the horizontal free sliding under heavy load working condition, can improve the friction damping effect of right support plate and left support plate through rubber pad, improves the damping effect of damper, makes up the problem that damper damping force is not enough in high temperature environment, guarantees the damping effect of damper.

This invention relates to the field of drilling equipment technology, specifically to a diamond-coated drill bit, comprising a drill bit connecting rod and a drill bit; water passage holes are provided inside the drill bit connecting rod and inside the drill bit, a first water outlet device is provided at the top of the water passage holes, and the first water outlet device is provided with a plurality of first water outlet holes; a second water outlet device is provided inside the water passage holes; the second water outlet device includes a screw, a plunger, and a turntable; the turntable is rotatably connected to the inner wall of the drill bit connecting rod in the horizontal direction, and the bottom of the turntable is provided with serrations that mesh with a gear, the gear being mounted on a rotating rod; the screw is threadedly connected to the turntable, and one end of the screw is connected to a mounting plate, the mounting plate being provided with a vertical plunger that can be inserted into the first water outlet hole; the plunger has a hollow structure, with a second water outlet hole on its upper side and its lower end communicating with the water passage hole. The first and second water outlet devices of this invention provide dual protection for the cooling of the drill bit, and also prevent the water outlet holes from becoming blocked.

A drug delivery device may include a housing defining a longitudinal axis and having an opening and a drug storage container including a delivery member having an insertion end configured to extend at least partially through the opening during a delivery state. The device may also include plunger moveable toward the distal end of the drug storage container to expel a drug from the drug storage container through the delivery member, the plunger including a body portion having an inner wall defining an axial chamber and an outer wall cooperating with the inner wall to define a body thickness. The device may further include a plunger biasing member disposed at least partially within the axial chamber, the plunger biasing member configured to urge the plunger toward the distal end of the drug storage container.

In one example, a drug delivery system, such as an on-body or off-body delivery system, is configured to deliver a therapeutic drug to a patient. This system comprises a curved track, a plunger, and a driver. The driver translates the plunger along the curved track, causing the plunger's flexible plunger rod to bend along the curved track, driving the plunger seal of the drug container to dispense the liquid drug from the container.

A nasal sprayer training device mimics the appearance and operating forces and sensations of a medicated nasal sprayer. The training device utilizes an annular collar with flexible fingers and an annular recess, and a plunger having ramped projections that selectively engage the flexible fingers and the annular recess to provide operating forces and sensations as the plunger is depressed from the reset position to a fully activated position. The device can be readily reset for reuse by pulling out on the plunger until an audible and sensory click or snap is heard and / or felt by the user, which signals to the user that the device is ready for reuse.

The application belongs to the field of magnesium alloy semi-solid injection molding, and specifically discloses a high-quality and high-efficiency magnesium alloy wheel hub semi-solid injection molding method. The method is implemented by using a semi-solid forming device with a material dispersion chamber, a grain spheroidization chamber, an injection chamber, a double-screw stirring shaft and a plunger pusher. The method comprises the following steps: adding raw material particles into the material dispersion chamber; controlling the temperature and the rotating speed of the stirring shaft in the material dispersion chamber, so that the raw material particles form premixed slurry in the material dispersion chamber; controlling the temperature and the rotating speed of the stirring shaft in the grain spheroidization chamber, so as to promote the spheroidization of the grains in the premixed slurry and form semi-solid composite slurry; opening the one-way valve on the plunger pusher, and transferring the slurry into the injection chamber; closing the one-way valve and controlling the stirring shaft to push the plunger pusher to move, so as to inject the slurry into the mold cavity. The application can solve the problems of high purity and mechanical property requirements and low production efficiency in the current wheel hub forming process.

A rig for testing piston rings includes a hollow cylinder (1) with a piston (2) installed inside, made with a channel (2.1) for a medium and an opening (2.2) in which a plunger (3) is placed, while the piston ring (4) to be tested is mounted on the piston. The cylinder (1) is installed inside a heating tank (5) with a heating element (5.1), while the plunger (3) is made in the form of a hollow tube into which a medium is supplied through a valve (6), and a plug (7) is installed at the bottom of the cylinder, made with a channel (7.1) for supplying a medium, as well as with an opening (7.2) for relieving excess pressure. The technical result of the claimed utility model is the expansion of the nomenclature of the tests performed. 4 c.p. fils, 1 fig.

To easily provide a concentrated extract with good reproducibility. [Solution] A cylindrical member and A bottom member is attached to the lower opening of the cylindrical member and is used to install a filter for extraction. A plunger inserted into the cylindrical member and capable of sliding up and down within the cylindrical member, the plunger having an upper opening and a lower opening, Equipped with, An extractor for extracting the extract of the substance to be extracted by placing the substance to be extracted on the filter installed on the bottom surface member attached to the cylindrical member, pouring hot water through the upper opening of the plunger, and then pushing the plunger in while closing the upper opening.

A method of monitoring deposits on a well by cleaning a well of existing deposits sufficiently to allow a plunger from an instrumented plunger lift to travel therethrough; monitoring any further addition of deposits using the same instrumented plunger lift that records a velocity and a position of the plunger (or any other parameters that allows one to estimate speed and depth) as it travels through the well; and using the recorded velocity and position to determine a size and a position of each added deposit by a decrease in the velocity at a given position as compared to a baseline velocity. Ideally, once added deposits begin to impinge on production rates, the operator then treats said well to remove each said added deposit. The technology may thus be used to identify potential deposits, but also use to validate the efficacy of chemical treatments used in said well.

This invention discloses a top-floating self-draining siphon rainwater hopper, comprising a power-accumulating transmission mechanism and a squeezing drainage assembly. The squeezing drainage assembly includes a sleeve and a plunger connected movably. A drainage chamber is formed inside the sleeve, and both the inlet and the drain pipe are connected to the drainage chamber. The outlet end of the drain pipe is set lower than the inlet. The power-accumulating transmission mechanism includes a lever, an air-float component, and a limiting component. The lever has a driving end and a contact end. The air-float component is connected to the driving end, and the limiting component is located on the rotation path of the contact end. The lever is connected to the squeezing drainage assembly. When the air-float component rises under buoyancy, it can drive the contact end to break through the threshold of the limiting resistance. The lever can drive the plunger component to squeeze the water accumulated in the drainage chamber, so that the water enters the drain pipe to form a siphon negative pressure. This invention is a purely mechanical structure that can automatically accumulate power to trigger and actively establish a siphon. It is suitable for buildings without openings, realizes centralized drainage across high points on the same floor, has a fast siphon start-up response, low construction and maintenance costs, and stable and reliable operation.

This invention discloses a fracturing pump with anti-eccentric wear, comprising a valve box and a plunger. The plunger has a weight-reducing cavity inside, and the hydraulic end of the plunger is slidably disposed within the valve box. It also includes an anti-eccentricity assembly, comprising an anti-eccentricity outer cylinder and an anti-eccentricity inner rod. The anti-eccentricity outer cylinder is sleeved on the outside of the plunger, and one end of the outer cylinder is fixedly connected to the valve box. The inner diameter of the outer cylinder is adapted to the outer diameter of the plunger. One end of the anti-eccentricity inner rod is fixed to the cavity wall of the valve box, and the other end of the inner rod passes through the hydraulic end of the plunger and connects to a limiting slider, which is slidably disposed within the weight-reducing cavity. This invention provides a fracturing pump with anti-eccentric wear, which, through radial limiting inside and outside the plunger, can reduce eccentric wear between the plunger and packing, extending the service life of the packing.

A delivery pen includes a reservoir including a non-circular shape, a plunger positioned in the reservoir, and a screw mechanism at least partially inserted within the reservoir. The screw mechanism includes a drive shaft including one or more protruding member at a proximal end and an elongated member extending longitudinally from the proximal end, an inner screw concentrically engaging the elongated member, an outer housing including a circular section rotatably engaging the one or more protruding member and a non-circular section sized to fit within the reservoir, and a pusher disposed between the inner screw and the outer housing to linearly translate the plunger so as to dispense a medication from the reservoir.

The application relates to the technical field of roof protection frames, and discloses a forklift anti-falling roof protection frame with a multistage buffer structure, which comprises a vehicle body, four connecting blocks are fixedly connected to the outer surface of the vehicle body, the upper surfaces of the connecting blocks are all fixedly connected with stand columns, a fixing frame is arranged above the vehicle body, and the bottom surface of the fixing frame is fixedly connected with the four stand columns. The forklift anti-falling roof protection frame with the multistage buffer structure is provided with a first-stage hydraulic buffer, a second-stage honeycomb aluminum energy absorption box and a third-stage elastic damping layer, so that in the use process of the device, part of impact force can be absorbed through the compression deformation of the third-stage elastic damping layer, then the remaining kinetic energy is gradually conducted to the honeycomb aluminum energy absorption box, half of the energy is absorbed through the plastic deformation of the hole wall, the remaining energy is finally dissipated by the plunger cylinder through the oil throttling effect, and therefore, the device can greatly reduce the energy conducted to the driver when the roof protection frame is impacted.

Plunger drive systems used with injectors to expel a fluid drug for injection into a patient include a housing and a plunger rod that extends from the housing. The plunger rod includes a first leg and a second leg individually coupled with separate rollers over one portion of the first leg and second leg and engaged together over another portion of the first leg and second leg to form a column. The legs may include a reinforcement member. The first leg and second leg meet at a location between the rollers and are engaged with one another through complementary registration surfaces. When the rollers are rotated, typically through action of an electric motor, the rollers rotate in opposite directions to increase a length of the column. The column may be operatively coupled to a plunger of a syringe to dispense a fluid drug as the column increases in length.

The present utility model is an experimental apparatus for the demonstration of projectile and free-fall motion. The apparatus for demonstration of projectile and free-fall body motion comprises a vertical support, a barrel having for holding a first object, a plunger for causing impact to the first object, a slot for holding a second object, a launcher trigger, and a trigger pin and lock pin. The apparatus simultaneously launches the first object from the barrel and releases the second object from the slot. The present utility model provides flexibility and connectivity in teaching free-fall and projectile motion.

This invention relates to the field of pressure resistance testing of water-jet loom parts, specifically to a pressure resistance testing device for ceramic plungers in water-jet looms. It includes a testing platform with a water tank on one side. A lifting frame that can slide vertically back and forth is located above the testing platform. A pressure testing head for applying axial pressure to the ceramic plunger is located in the middle of the lifting frame. High-speed cameras for capturing the entire deformation and fracture process of the ceramic plunger are symmetrically arranged on both sides of the pressure testing head. A pneumatic slide is located on the upper surface of the testing platform, and an electric clamp is located in the middle of the pneumatic slide. A transparent water bath tube is coaxially located above the electric clamp, and the clamping end of the electric clamp extends into the transparent water bath tube. The lifting frame also includes a rinsing and water replenishment mechanism, including a corrugated pipe connected to the water tank, a liquid storage box, and a sliding dropper. The liquid storage box stores a fluorescent penetrant. This device can simulate the actual working environment of the ceramic plunger, observe the microcrack propagation process in real time, and significantly improve the accuracy and reliability of the test results.

The utility model relates to engineering equipment technical field, the embodiment of utility model provides a height adjustable support, including lower connecting plate, upper connecting plate, upper roof, adjusting mechanism, can rectify deviation mechanism. The upper roof is bolted to the top of upper connecting plate, and the adjusting mechanism is arranged on the top of lower connecting plate. In the utility model, when needing to adjust the jacking of shock insulation support, first, the bolt in the bolt hole of upper connecting plate and upper roof is disassembled. Then the pressing plunger is moved in the cylinder by operating handle, negative pressure is generated, and the liquid pushes the plunger to move upward. The rising of plunger drives the force bar to contact with the upper roof, forces the force bar to retract and extrude the force plate, and the force plate rotates through the supporting shaft, drives the supporting plate to rotate to contact with the bottom of upper roof. At this time, by increasing the pushing area, the height of upper roof is stably adjusted, and the technical problem that the jacking adjustment of shock insulation support cannot be carried out in the related art is solved.

The invention relates to a compact coffee press comprising plunger member, a soft, flexible diaphragm, and a receptacle member comprising an outlet, wherein the diaphragm is reversibly displaceable between a first position where the plunger member is elevated above the diaphragm, and a second position where the plunger member is depressed and the diaphragm is inverted, the plunger member fitting substantially within the diaphragm, and the diaphragm fitting substantially within the receptacle member. The invention further relates to a method of brewing and extracting coffee with the use of the compact coffee press.

This utility model discloses a safety device for a resistance band, consisting of seven plungers. The fourth plunger is the longest and has the largest diameter, with the diameters decreasing sequentially on both sides. The smaller diameter plunger can retract into the adjacent larger diameter plunger. The plungers are tightly fitted together by sealing rings and support rings. The first plunger is directly rigidly connected to the handle on one side of the resistance band. A spring seat is installed inside each of the seven plungers, and a spindle is mounted on the spring seat. A spring, a rubber stopper, and a pull ring are sequentially installed on the spindle. The other end of the pull ring is connected to the handle on the other end of the resistance band. This utility model overcomes the problem of ordinary spring resistance bands, where, when stretched, the resistance band swings violently due to the spring action, potentially causing injury if the hand accidentally slips off the handle. This utility model device is simple to operate and improves the safety of the resistance band operation.

The utility model provides a novel numerical control machine tool belongs to numerical control machine tool technical field. It has solved the problem that the height of the ejector pin tailstock on the existing numerical control machine tool cannot be adjusted. The novel numerical control machine tool, including machine tool main part and the ejector pin tailstock of setting on machine tool main part, the ejector pin tailstock includes the lower base, upper base and ejector pin body, be provided with the adjusting device for adjusting height between the lower base and upper base, the lower base and the upper base are respectively set up and are used for installing the lower installation groove and the upper installation groove of adjusting device, adjusting device includes adjusting main part, plunger and hydraulic cylinder, the inner diameter of plunger is provided with the partition layer, the partition layer is set up and is used for installing the liquid inlet, plunger and the hydraulic cylinder between be provided with check valve, and check valve sets up at the liquid inlet, adjusting main part and relative to the contact place of plunger are set up and are used for the oil inlet groove. The utility model has the advantages of wide applicability.

In a machine for forming hollow glass products, a configurable supply assembly is provided for forming and supplying glass gobs. [Solution] In a supply assembly for shaping and supplying glass gobs 2, the orifice 22 of the outlet body 24 is aligned with a corresponding plunger 16 which is axially movable along a vertical axis 19 and forms a glass bead 6 from a mass of molten glass 13, and the glass bead is cut by a cutting device 9 located below the orifice to form a glass gob, and the supply assembly is configured such that during production changes, the steps of selecting one of the available diameters to satisfy the weight and / or shape factors of the glass gob to be supplied, determining a target glass flow rate, verifying whether the selected diameter satisfies the target glass flow rate, and adjusting the height position of the orifice 22 relative to the bowl 11 in case of a negative result are carried out.

Disclosed is a plunger (50) for use in a sealant dispensing cartridge having a collapsible sealant package (40). The plunger includes an anti-bypass retainer (60) to reduce or prevent undesirable passage of flexible sealant package around the edges of the plunger during sealant dispensing operations.