52 results about "Injection - action" patented technology

The invention discloses bearing end cover pressing equipment, and belongs to the field of bearing machining. Comprising a fixing table, a crimping unit is arranged on the fixing table, and the crimping unit comprises two sets of supporting plates fixed to the fixing table; the material taking device is arranged between the two groups of supporting plates; the pushing device is arranged on the pressing device and used for achieving synchronous linkage of the oil injection action and the material taking action; the cleaning assembly is arranged on the pushing device, and the cleaning assembly is used for achieving injection and automatic cleaning of the lubricating grease; and the linkage assembly is arranged on the fixing table and used for achieving synchronous linkage of the oil injection action and the material taking action. According to the bearing end cover press-fit equipment, through integration of multiple devices and assemblies, the procedures of grease injection, material taking and press-fit are achieved, exposure and contamination of lubricating grease are avoided, the production space is saved, procedure continuity is achieved, and the production efficiency and the assembly precision are improved.

A sound feedback system of an automatic injection apparatus. The automatic injection apparatus comprises a needle protection sleeve (2), a trigger sleeve (9), a return spring (11), a start sound member (12), and an end cap (13). The outer wall of the trigger sleeve (9) is provided with an outer trigger structure (905). The outer trigger structure (905) is provided with an outer trigger inclined surface (9051). The inner surface of the start sound member (12) is provided with a first trigger inclined surface (1204). During use, the needle protection sleeve (2) is pressed down to push the trigger sleeve (9); the outer trigger inclined surface (9051) interacts with the first trigger inclined surface (1204) to drive the start sound member (12) to rotate, and the start sound member ultimately hits the end cap to produce a "start injection" sound signal. Triggering "injection" and triggering the "start injection sound" are accomplished by means of the same part, thereby ensuring that the start injection sound feedback is synchronized with the start of the actual injection action. The start sound member (12) and an end sound member (10) produce sounds by hitting the same end cap, which means that the two sound signals come from the same source, providing the patient with clear feedback for the start and end of the injection.

The application discloses a pressure control stable fuel injector detection system, and relates to the technical field of pressure control.The system comprises a prediction module, a compensation module and a comparison module.The prediction module collects current and voltage waveform data of a driving fuel injector electromagnetic valve, and constructs a pressure fluctuation prediction model through a machine learning model based on driving fuel injector driving signals and historical pressure fluctuation data, so as to predict the pressure disturbance amplitude and waveform generated in the track by the next injection action.The compensation module generates a reverse compensation instruction through a feedforward-feedback compound controller according to the pressure disturbance amplitude and waveform, and a feedback path processes the residual error that is not offset by the feedforward model through a PID controller.The comparison module is based on a stable pressure environment.The application realizes high-precision and visual positioning and diagnosis of fault types, positions and causes, and thus realizes the ability transition from passive standard detection to active intelligent deep diagnosis in essence.

The utility model relates to the technical field of micro-injection pumps, and discloses a micro-pump, which comprises a micro-injection pump machine, a controller used for controlling injection amount and speed and a display used for interactive display are integrated on the micro-injection pump machine, the micro injection pump machine is further provided with a push rod which is driven by a motor to be propelled and is used for injecting an injector fixed on the micro injection pump machine, and the multi-specification clamp holder is fixed in the middle of the micro injection pump machine. A multi-specification clamping device is arranged above the device, a clamping rod at a proper position is independently pulled open to form an enough opening for the injector to be rapidly placed in from the placing opening, and then the injector is adjusted to the middle position of the annular frame under the equal potential energy of three springs. And the tail end of the injector can be better aligned with the center of the upper end of the push rod.

The invention relates to the technical field of precise injection molding, and particularly discloses an LSR liquid silica gel injection molding machine which comprises a rack, a vertical mold closing mechanism, a gel injection mechanism and a controller are arranged on the rack, the vertical mold closing mechanism is located at the top of the rack, and the vertical mold closing mechanism comprises a mold closing assembly, a driving assembly, a positioning assembly and a mold supporting assembly; the mold closing assembly is used for opening and closing a mold, the driving assembly is used for driving the mold closing assembly to move, the positioning assembly is used for positioning the mold closing assembly, the mold supporting assembly is used for supporting a product formed by the mold closing assembly, and the glue injection mechanism is installed on the vertical mold closing mechanism. The glue injection mechanism comprises a gun barrel assembly for heating and temperature control and a glue injection driving assembly for driving the gun barrel assembly to execute glue injection action, the controller is electrically connected with the vertical mold closing mechanism and the glue injection mechanism, and the controller controls the vertical mold closing mechanism and the glue injection mechanism to act orderly. The method has the effects of expanding the production scale and improving the production efficiency.

The invention discloses a refrigerating machine oil subpackaging device and method, and the device comprises an oil pumping system which is disposed at an outlet of a crude oil barrel, and is used for pumping crude oil, controlling the pumping action and the pumping flow, and counting the number of the crude oil barrels for subpackaging oil; a liquid level switch is arranged on the transfer barrel to control starting and stopping of rear oil injection actions; the oil injection system is used for receiving the oil conveyed from the transfer barrel and injecting oil to the downstream according to the pressure difference and flow setting requirements; the filled oil barrel is arranged at the downstream of the oil injection system and injects oil to the system according to volume flow metering; and the gas constant-pressure system is arranged among the crude oil barrel, the transfer barrel and the filled oil barrel, works in linkage with the oil pumping system and is used for keeping air isolated in the engine oil split charging process. The invention aims to overcome the defects that the quality is influenced, the split charging precision is influenced, overpressure oil injection is caused, and split charging data cannot be monitored and managed in the split charging process of the barreled refrigerating machine oil at present.

The invention relates to the technical field of injection molding machine control, in particular to a self-adaptive control method and system for an injection molding machine. The method comprises the following steps: monitoring the time change rate of injection pressure at the initial stage of executing injection action by a screw rod, locking the moment when the pressure change rate suddenly changes to a non-return closing moment, and calculating a displacement difference value between the initial position of the screw rod and a non-return closing point as a backflow slippage amount; compensation control of double paths is synchronously executed on the basis of the backflow slippage amount, wherein the first path is geometric volume compensation, and position correction operation is executed on a preset injection pressure maintaining switching position; the second path is pressure maintaining pressure compensation, the viscosity attenuation coefficient is determined based on the backflow slippage amount and the screw rotating speed, and subtraction correction is carried out on the set pressure of the subsequent pressure maintaining stage. Through a dual-path compensation mechanism, the problem of melt backflow caused by closing delay of the non-return ring is effectively solved, and the size precision and the quality stability of an injection molding product are remarkably improved.

Provided are a detection device and a detection method with which it is possible to easily discriminate a location where an abnormality occurs in an injection molding device. A detection device (2) according to the present disclosure is provided with an acceleration information acquisition unit (21), an acceleration abnormality detection unit (22), and an output unit (23). An acceleration information acquisition unit (21) acquires acceleration information of a plunger during an injection operation. An acceleration abnormality detection unit (22) detects an acceleration abnormality of the plunger in the injection direction and a direction perpendicular to the injection direction on the basis of the acceleration information. The output unit (23) outputs abnormality detection information pertaining to the drive mechanism of the plunger when the acceleration abnormality detection unit (22) detects an acceleration abnormality in the injection direction and does not detect an acceleration abnormality in a direction perpendicular to the injection direction.

The invention relates to the field of medical anesthesia, in particular to an intravenous anesthesia dosage and efficacy analysis navigator which comprises an infusion pump mechanism. Comprising an infusion pump body, an injector push rod penetrating through the infusion pump body, a piston caulking groove formed in the injector push rod, a needle cylinder caulking groove formed in one side of the top of the infusion pump body, and a stabilizing piece penetrating through the infusion pump body and used for fixing an injector needle cylinder. The abutting piece is arranged on the inner side of the needle cylinder embedding groove; and the monitor is electrically connected with the infusion pump mechanism for interaction and is used for controlling the injection action of the infusion pump mechanism. Through the synergistic effect of the linkage piece, the limiting piece and the control piece, rapid installation and one-hand operation of the injector are achieved, namely when the injector is placed, the cylinder body is pressed down only with one hand, the linkage piece synchronously triggers the abutting piece to complete axial locking and the stabilizing piece to complete radial pressing, and the operation process is simplified.

The invention discloses a multi-connecting-rod press punching automatic production line, which belongs to the technical field of punching machines, and comprises a punching machine box arranged above a base, four support columns arranged between the punching machine box and the base, a multi-connecting-rod gear transmission group arranged in the punching machine box, an operation table fixedly mounted at the top of the base, and a lower die arranged at the top of the operation table. The device comprises four supporting columns, a same sliding block box is connected among the four supporting columns in a sliding mode, four piston connecting rods are arranged in the sliding block box and connected with a multi-connecting-rod gear transmission set, a same fixing plate is fixedly installed among the four piston connecting rods, and four symmetrically-arranged pressing rods are fixedly installed at the bottom of the fixing plate. A power source of oil injection action directly comes from stamping main motion (pressing down of the piston connecting rod), an additional electric or pneumatic pump is not needed, the piston connecting rod drives the piston plate to compress air in the driving box, pressure gas is generated, and energy recovery and utilization are achieved.

This application discloses a control method, equipment, and storage medium for a two-plate die-casting machine, including: setting a target speed and target pressure for the hammer's follow-out motion; after the injection action is completed, driving the hammer with the target speed and target pressure, while simultaneously limiting the return oil flow of the mold-opening cylinder, so that the hammer pushes the mold plate to perform a mold-opening action; during the process of the hammer pushing the mold plate, controlling the return oil pressure of the mold-opening cylinder by adjusting the opening degree of the pressure relief valve; when the mold plate is detected to have moved to a preset follow-out position, stopping the follow-out driving of the hammer, and completing the subsequent mold-opening action at a preset mold-opening speed until the mold opening is completed. This application achieves the technical effect of improving production safety and stability by simultaneously setting and controlling the target pressure and speed of the hammer's follow-out motion, so that the mold-opening speed is controlled by the hammer's push during the follow-out stage.

The invention belongs to the technical field of hydraulic pressure of injection molding machines, and provides a hydraulic transmission control system for a direct pressing machine and the direct pressing machine. The mold locking loop comprises an active safety valve, an electro-hydraulic directional control valve, a piston control assembly and a first cartridge valve; the piston control assembly is composed of a first electromagnetic reversing valve, a first poppet valve and a piston. The mold locking high-pressure loop consists of a second electromagnetic directional valve and a first one-way valve; the pressure relief loop is composed of a second poppet valve and a first one-way throttling valve, and the pressure relief flow is controlled by adjusting the size of a throttling opening; the glue injection loop is used for controlling the glue density through the melt glue back pressure and executing the glue injection action; and the first cartridge valve is opened and closed by a third electromagnetic directional valve control valve core. Compared with the prior art, the independent pressure relief loop is arranged, and the adjustable first one-way throttle valve is adopted, so that pressure relief impact is effectively reduced, and the abnormal vibration risk of the template is reduced.

This invention discloses a magnesium alloy vehicle frame die-casting molding apparatus, belonging to the technical field of die-casting equipment. It includes a machine base, on which a base platform and a fixed mold are fixedly mounted. An injection chamber is fixedly mounted on the base platform, and a cavity is formed on the fixed mold. The advantages are: This apparatus addresses the problem that traditional venting channels only reach the edge of the cavity, are difficult to access deep cavities, and are located in corners. Through a linkage design between the external venting needle and the guide tube, the external venting needle can penetrate deep into the corners and move dynamically with the injection action, venting residual gas in the corners and avoiding defects such as porosity and shrinkage, thus ensuring the strength of the vehicle frame. Simultaneously, addressing the problem of low venting efficiency and easy backflow clogging with fixed-diameter venting, the eccentric fine hole of the internal venting needle rotates synchronously with the injection, changing its diameter. This allows for large-scale venting in the initial stage and prevention of clogging in the later stage, eliminating the need for frequent machine shutdowns for cleaning. Mechanical transmission allows the venting position and diameter to adapt to changes in cavity pressure and gas volume in real time, matching the filling rhythm and significantly improving die-casting quality and production stability.

The utility model relates to the technical field of water injection testing machines, and discloses a water injection testing machine which comprises a complete machine base, an injector clamping groove support is fixedly connected to one side of the upper portion of the complete machine base, a guide pipe valve clamping groove support is installed on one side of the injector clamping groove support, the guide pipe valve clamping groove support is fixedly connected to the upper portion of the complete machine base, and the injector clamping groove support is fixedly connected to the other side of the complete machine base. Clamping assemblies are fixedly connected to one side of the upper portion of the injector clamping groove support and one side of the upper portion of the catheter valve clamping groove support, the clamping assemblies are used for ensuring the stability when an injector is fixed, a servo electric cylinder is fixedly connected to one side of the upper portion of the whole machine base, and a push block is fixedly connected to the output end of the servo electric cylinder; the push block is slidably connected to the upper side of the interior of the complete machine base, and a protective shell is fixedly connected to one side of the upper portion of the complete machine base. According to the automatic injection device, the injection action can be automatically completed, manual injection is not needed any more, manpower is saved, and the working efficiency is improved.

The utility model provides engine valve body oil injection equipment which comprises a machine table, and the machine table is provided with a feeding module used for feeding and conveying an oil valve body to be injected, an oil injection module used for conducting oil injection on the valve body in the circumferential direction, and an oil injection module used for conducting oil injection on the valve body in the circumferential direction. The discharging module is used for stacking and discharging the oil-sprayed valve bodies; the transferring module is used for carrying the valve bodies among the modules; the oil spraying module comprises an oil storage tank, the oil storage tank is arranged to be of a cavity structure, oil liquid is stored in the oil storage tank, a discharging port and a sealing component used for opening or closing the discharging port are arranged at the upper end of the oil storage tank, a material carrying piece used for containing a valve body is arranged in the cavity structure, and oil spraying components are arranged in the circumferential direction of the material carrying piece; and the oil spraying component is connected with the oil in the oil storage tank through an oil pipe so as to spray the oil on the periphery of the valve body on the material loading piece. By means of the mode, automatic oil injection action on the valve body is achieved, and the working efficiency and the oil injection uniformity are effectively improved.

The invention discloses a nozzle pressure measurement and control system and method capable of measuring ultrahigh pressure of 4000 bar for multiple times, and the system comprises a pressure sensing module which employs a GRAEFF microelectronic technology, is equipped with an active cooling and heat insulation structure, and can stably work in an ultrahigh-pressure and high-temperature environment; the signal processing module is integrated with a temperature compensation algorithm based on a BP neural network, so that the signal precision is remarkably improved; the core control module is combined with a self-adaptive fuzzy PID controller and a feedforward compensator to form an intelligent composite control strategy; and the high-response executing mechanism accurately drives the injection action. The method comprises the steps of real-time pressure acquisition and intelligent compensation, pressure deviation calculation, self-adaptive fuzzy PID and feedforward compound control quantity calculation, and comprehensive output and pressure adjustment. According to the invention, the key technical problems of large pressure measurement drift, slow control response and easy oscillation in ultrahigh pressure injection molding are solved, long-term high-precision measurement and rapid and accurate control under the extreme working condition of 4000 bar / 300 DEG C are realized, and the quality consistency and qualified rate of precision injection molding products are obviously improved.

The utility model discloses a glue injection action control hydraulic loop of an injection molding machine, which comprises a six-position four-way servo valve and a glue injection oil cylinder, a port P of the six-position four-way servo valve is communicated with an oil inlet, a port T of the six-position four-way servo valve is communicated with an oil return port, a port A of the six-position four-way servo valve is communicated with a rear oil port of the glue injection oil cylinder, and a port B of the six-position four-way servo valve is communicated with an oil return port of the glue injection oil cylinder. A port B of the six-position four-way servo valve is communicated with a front oil port of a glue injection oil cylinder, a cartridge valve is arranged between a rear oil port of the glue injection oil cylinder and a port A of the six-position four-way servo valve, a control port of the cartridge valve is communicated with a direction valve, and when the six-position four-way servo valve stops working, the direction valve is controlled to be not electrified, and the direction valve is controlled to be not electrified. And hydraulic oil at a rear oil port in the glue injection oil cylinder is sealed by the cartridge valve and cannot flow to the six-position four-way servo valve, so that the screw rod is prevented from retreating due to leakage of a valve core, the screw rod connected with the conveying end of the glue injection oil cylinder is always kept at a charging ending position, the glue injection starting point positions of the next mold are ensured to be the same, and the influence on the product precision is avoided.

The invention relates to an electromagnetic needleless injector system and method based on a series excited machine, and the system comprises the series excited machine which is used for driving a plunger rod to move; the displacement monitoring module is used for monitoring the displacement of the plunger rod in real time; the safety condition detection module is used for generating a signal representing whether an injection safety condition is met or not; the control module is connected with the series motor, the displacement monitoring module and the safety condition detection module, and the control module is configured to receive injection parameters set by a user; in response to a signal which is received from the safety condition detection module and indicates that the safety condition is met, controlling the series motor to start according to the injection parameter; in the injection process, closed-loop control is conducted on operation of the series motor according to real-time displacement data fed back by the displacement monitoring module until injection actions corresponding to the injection parameters are completed, and therefore the efficient, accurate, safe and intelligent injection operation requirements of the modern livestock breeding industry are met.

The utility model relates to the technical field of grease injection, in particular to an automatic grease injection device based on a motion guide groove, which comprises a frame body. The first driving device is arranged on a first guide rod on the frame body, the tool carrier and the fixing facility are arranged at the upper end of the first driving device and used for containing a motion guide groove to be oiled, and the first driving device drives the first guide rod to move along the first guide rail under the action of a first driving instruction. The tool carrier drives the motion guide groove to be oiled to move; the oil injection driving device is fixedly arranged on the second supporting rod, is perpendicular to the first driving device and is arranged at the upper end of the first driving device; executing the oil injection action under the action of receiving the second driving instruction; the control device is used for forming and outputting the first driving instruction under the action of receiving the first control instruction; and forming the second driving instruction under the action of the received second control instruction.

The utility model discloses an oil tank assembly and a die-casting machine, and relates to the technical field of die-casting machines, the oil tank assembly is applied to the die-casting machine, the oil tank assembly comprises a first oil tank, and the first oil tank is provided with a containing groove for containing hydraulic oil; the defoaming assembly is arranged in the first oil tank, and the defoaming assembly is used for eliminating bubbles on the hydraulic oil in the first oil tank; a second oil tank; the communicating assembly is communicated with the first oil tank and the second oil tank; the technical scheme provided by the utility model has the technical effects that air flow generated when hydraulic oil in the second oil tank performs injection action is conveyed into the communicating assembly, and the communicating assembly blows out the air flow towards the defoaming assembly, so that bubbles on the liquid level of the hydraulic oil in the first oil tank move to the defoaming assembly; the defoaming component is used for blocking or eliminating bubbles.

The utility model discloses an injection pen and a clutch device thereof, and relates to the technical field of medical instruments, the injection pen clutch device comprises a pen body, an injection mechanism, a dosage hub and a clutch, the injection mechanism is arranged on the pen body, and the injection mechanism is used for pushing injection of liquid medicine in a cartridge bottle; the dosage hub is arranged on the pen body, and the dosage hub can move in the axial direction of the pen body so as to adjust the injection amount; the clutch is used for driving the injection mechanism to achieve injection action, the clutch is arranged in the dosage hub, the clutch can move in the axial direction of the pen body, and on the moving path of the clutch, the clutch has the two states of abutting coupling with the dosage hub and separation decoupling with the dosage hub. According to the injection pen clutch device, by simplifying the structure of the injection pen clutch device, dependence on vulnerable parts such as a metal spring is reduced, so that the overall durability and reliability are improved, and the problems that in the prior art, a clutch mechanism is complex in structure, high in cost, difficult to maintain and poor in environmental adaptability are effectively solved.

The invention discloses a seabed modified gel injection vehicle for deep-sea mining and a using method, and relates to the technical field of deep-sea resource development, the seabed modified gel injection vehicle comprises a vehicle body, a walking chassis, a gel injection mechanism and a driving mechanism, the vehicle body is provided with a gel storage cabin, and the gel storage cabin is used for storing a gel material; the walking chassis is arranged at the bottom of the vehicle body and used for supporting the vehicle body to walk on the seabed. The gel injection mechanism is mounted on the vehicle body, is communicated with the gel storage cabin and is used for injecting a gel material into sediment on the surface layer of the seabed; the driving mechanism is in transmission connection with the gel injection mechanism and used for driving the gel injection mechanism to execute injection action, plume generation is effectively inhibited, the overall efficiency of deep-sea mining is improved, and the marine ecological environment is protected.

The invention discloses a control system of a one-machine dual-mode software controlled injection molding machine and a control method thereof, and relates to the field of injection molding machines, the control system comprises a main system and a software control system, the main system comprises a mold unit and a mold locking unit, and the main system is used for executing injection, mold opening and closing and ejection injection molding actions; the software control system is electrically connected with each unit of the main system, and the software control system comprises a central control module, an action control module, a process parameter setting module and a mode locking safety module; the central control module is used for independently controlling the technological process of the mold assembly. The action control module is used for controlling the injection unit to execute the injection action of the mold assembly and realizing injection control of asynchronous linkage of double cavity surfaces; the process parameter setting module is used for setting injection parameters of the mold assembly; and the mode locking safety module has signal interlocking logic. According to the invention, injection molding production can be synchronously carried out on the other side in the process of cooling a product on one side, so that the production cost is effectively reduced, and the efficiency is improved.

The present invention addresses the problem of providing a monitoring device and a monitoring method capable of suppressing fluctuation of molten metal or gas entrainment into the molten metal by monitoring the shake of the molten metal in a plunger sleeve during a low-speed injection period at the initial injection stage of an injection molding machine and controlling the injection speed on the basis of the monitoring result. A monitoring device according to the present invention is provided with: an acquisition unit that acquires acceleration information of a plunger during an injection operation; a determination unit that determines the shake of the molten metal in the plunger sleeve on the basis of information relating to the acceleration in the direction of travel of the plunger from the start of injection of the molten metal in the plunger sleeve by the plunger to a predetermined period among the acceleration information; and an output unit that outputs the determination result of the shake of the molten metal.

The invention discloses a multi-component injection molding machine with a rotatable middle plate and a four-injection control system, and belongs to the technical field of injection molding equipment. The injection molding machine comprises a mold closing unit, a rotary table assembly arranged below a middle mold plate, a four-shot injection unit assembly distributed on the back surfaces of a fixed mold plate and a movable mold plate, and a control system electrically connected with the components. Accurate rotation of the middle plate is achieved through the rotary table assembly, the four-shot injection unit assembly and the closed-loop control system are matched, the injection molding process can be flexibly converted in multiple injection modes, and the production efficiency of multi-component injection molding and the product forming precision are remarkably improved. And meanwhile, the mold changing time can be effectively shortened, the forming consistency of multi-color and multi-material products is improved, cooperative control over the injection action and rotary positioning is optimized, and the beneficial effects of being high in automation degree, stable in operation, precise in control and the like are achieved.

The invention relates to a magnesium alloy semi-solid injection molding method and system.The method comprises the steps that a temperature-injection pressure reference model of magnesium alloy slurry is established, and the model is used for determining reference injection pressure Pb needed for obtaining a qualified casting at different slurry temperatures; before the injection action is executed, the actual temperature Ta of the magnesium alloy slurry in the injection cylinder is detected in real time through a temperature sensor; the actual temperature Ta is compared with a preset ideal process temperature threshold value T0, and the temperature deviation delta T = Ta-T0 is calculated; on the basis of the temperature deviation delta T, according to a preset pressure compensation rule, the reference injection pressure Pb is dynamically compensated, and the final injection pressure Pf is calculated; and controlling the injection mechanism to execute the injection action at the final injection pressure Pf. According to the magnesium alloy semi-solid forming method, real-time and dynamic matching of the injection pressure and the slurry state is achieved. Product quality is guaranteed and stabilized, production efficiency is improved, the service life of the die is prolonged, and energy consumption is reduced.

The invention relates to the technical field of asphalt pavement repair, in particular to an asphalt pavement crack repair method based on multi-stage stress guidance, which comprises the following steps: cleaning the crack surface, removing moisture in the deep part of a crack by using a hot air spray gun, and heating to a preheating temperature; the average crack width W is extracted by collecting the three-dimensional point cloud of the crack area; outputting an outlet temperature, viscosity and component adding instruction of the repairing material according to the width W and the environment temperature; the thermoplastic polymer modified asphalt is adjusted to the determined target temperature and viscosity, and the injection action is executed according to the crack grading result; starting the sectional type infrared heating array, constructing a transverse temperature difference field, and inducing the crack wall surface to generate centripetal displacement by utilizing the thermal expansion difference of the pavement material; and the surface temperature of the repairing material is monitored, when the temperature is reduced to a compaction window threshold value, the repairing area is compacted, the physical occlusal force is enhanced, the tensile stress generated by later environment cooling is more effectively offset, and the cracking recurrence rate after repairing is remarkably reduced.

The utility model relates to the technical field of injection systems, and particularly discloses a novel injection system hydraulic circuit which comprises a system oil way, an energy storage oil way and an injection oil way, the system oil way comprises a system oil port, the energy storage oil way comprises a first energy accumulator, and the injection oil way comprises a second energy accumulator. The injection oil way comprises an injection oil cylinder, a first proportional servo cartridge valve, a second proportional servo cartridge valve, a proportional servo direction control valve and an oil tank, the system oil port is communicated with the first proportional servo cartridge valve and the first energy accumulator at the same time, and an oil outlet of the first proportional servo cartridge valve is communicated with a rodless cavity of the injection oil cylinder; in other words, hydraulic oil provided by a system oil port can directly enter the rodless cavity of the injection oil cylinder through the first proportional servo cartridge valve to achieve the low-speed injection action of the injection oil cylinder, and can also enter the first energy accumulator firstly for energy storage, and then the first energy accumulator fills oil into the rodless cavity of the injection oil cylinder through the first proportional servo cartridge valve to achieve the low-speed injection action of the injection oil cylinder. The high-speed injection action is realized, and different injection requirements are met.

The invention provides an intermittent blowing anti-blocking device for an ash conveying pipeline, which comprises a spraying pipe, a blowing pipe, a first blowing pipe, a second blowing pipe, a first blowing pipe and a second blowing pipe, an air outlet of the electromagnetic pulse valve is connected with the first end, and the electromagnetic pulse valve is used for outputting high-pressure pulse airflow; an air inlet of the Laval nozzle is connected with the second end, and the Laval nozzle is used for converting the high-pressure pulse airflow into supersonic jet flow so as to achieve the injection action; and the control system is electrically connected with the electromagnetic pulse valve, and the control system is configured to be capable of controlling the electromagnetic pulse valve to intermittently output the high-pressure pulse airflow. According to the intermittent blowing anti-blocking device for the ash conveying pipeline, the problems of insufficient impact strength, low energy consumption efficiency and passive ash removal mode of a traditional ash removal technology can be solved, and the stability and the operation efficiency of a boiler system can be improved.

An adjustable-dose automatic injection pen, comprising: a pen housing assembly, which comprises a pen housing (10), a rotatable knob (11) and a pressable button (21); a dose adjustment assembly linked to the knob (11) and configured to increase a set dose when the knob (11) rotates in a first direction and decrease the set dose when the knob (11) rotates in a second direction; an injection assembly linked to the button (21) and configured to implement injection when the button (21) is pressed; and a clutch (6) which is connected between the dose adjustment assembly and the injection assembly and has a first position state and a second position state, wherein when the button (21) is not pressed, the clutch (6) is in the first position state, and the clutch (6) is engaged with the pen housing (10) for limiting, such that the position of the injection assembly remains unchanged; and when the button (21) is pressed, the clutch (6) is in the second position state, and the clutch (6) is disengaged from the pen housing (10) to enable injection of the injection assembly. When the clutch (6) is in the first position state, the clutch (6) is engaged with the pen housing (10) for limiting, such that the position of the injection assembly remains unchanged. In this case, when the dose is adjusted, no injection action is generated, and the injection accuracy can be improved.