85results about How to "Constant pressure" patented technology

An electric pump pressure type liquid oxygen methane rocket main and auxiliary power integrated system adopts an electric pump to pressurize a low-pressure propellant in a rocket storage tank, the pressurized propellant can be controlled to enter an attitude and orbit control engine or return to the rocket storage tank through reversing of a reversing valve, and if the reversing valve continuously supplies the propellant into the attitude and orbit control engine, the propellant can enter the attitude and orbit control engine; continuous and stable work of the attitude and orbit control engine can be realized; if the reversing valve supplies propellants into the attitude and orbit control engine and then immediately switches to the rocket storage tank, pulse work of the attitude and orbit control engine can be achieved through circulation. The reversing valve can keep the electric pump in a normal circulation state at the downstream moment, and the electric pump can work normally and stably no matter whether the attitude and orbit control engine works stably or in a pulse mode. The cavitation pipe is installed in front of the reversing valve, when the attitude and orbit control engine works in a pulse mode, the rotating speed and the power of the electric pump are kept unchanged, the pressure and the flow behind the pump can be constant, the flow entering the attitude and orbit control engine is constant, and it can be guaranteed that thrust generated by the attitude and orbit control engine in each pulse work is constant.

The embodiment of the invention provides wafer scrubbing equipment, a wafer scrubbing system and polishing equipment. The wafer scrubbing equipment comprises a scrubbing brush and a scrubbing brush regulation and control module, the scrubbing brush regulation and control module is arranged on one side, back to a wafer, of the scrubbing brush, and comprises a telescopic module and a magnetic suction module which are sequentially arranged towards the scrubbing brush; the scrubbing brush comprises a first rotating shaft and a brush head, the first rotating shaft comprises a first end facing the wafer and a second end back to the wafer, the first end of the first rotating shaft is connected with the brush head, and the second end of the first rotating shaft is in magnetic connection with the magnetic module; and the scrubbing brush regulation and control module is configured to regulate and control scrubbing pressure between the scrubbing brush and the wafer through axial stretching and retracting of the telescopic module. Through the arrangement of the magnetic suction module and the telescopic module, flexible magnetic suction connection between the scrubbing brush and the scrubbing brush regulation and control module is realized, and the pressure applied to the surface of the wafer by the brush head can be kept constant in the scrubbing process.

The invention discloses an internal grinding device and method for grouting pipe machining, and relates to the technical field of grouting pipe machining. The internal grinding device comprises a support and further comprises a grouting pipe, a first fixing frame and a second fixing frame; and the fixing part is located on the support and used for locking the grouting pipe, and a locking assembly matched with the grouting pipe is installed on the support. The grouting pipe polishing device has the advantages that revolution polishing and autorotation polishing are adopted, the autorotation polishing directions are inconsistent, the polishing quality and efficiency are improved, meanwhile, the position of a polishing wheel can be automatically adjusted according to the flatness of the inner wall of a grouting pipe, polishing dead corners are avoided, polishing is more thorough, and in the polishing process, the polishing efficiency is improved. And the abutting force between the grinding wheel and the inner wall of the grouting pipe can be automatically changed according to the actual situation, and therefore the grinding quality is improved.

The present invention relates to a dual-probe device for transverse and longitudinal wave bolt stress detection and a detection method thereof, and belongs to the technical field of ultrasonic non-destructive testing equipment. The invention solves the problem that it is difficult to ensure the positioning accuracy of the dual probes and the constant pressure between the dual probes and the bolts to be tested during the actual use of transverse and longitudinal wave dual-probe stress detection. The invention comprises a housing, a longitudinal wave probe preload adjustment part, a transverse wave probe preload adjustment part, a first spring, a second spring, a longitudinal wave probe, a transverse wave probe, a base and a magnet. The longitudinal wave probe preload adjustment part, a first spring and a longitudinal wave probe are arranged in sequence in the housing. The transverse wave probe preload adjustment part, a second spring and a transverse wave probe are also arranged in sequence in the housing. The housing is detachably connected to the base, and the detection ends of the longitudinal wave probe and the transverse wave probe extend into the base. The invention can well fix the position of the transverse and longitudinal wave dual probes to ensure the stress measurement accuracy; the invention is easy to use and adjust, and can maintain a constant pressure between the bolts to be tested.

The invention belongs to the technical field of water-saving intelligent control, and discloses a water-saving intelligent control setting method and system for water supply equipment. Parameters such as outlet pressure of the water supply equipment and outlet pressure at the tail end in a coverage area of the water supply equipment are calculated by adopting algorithms such as polynomial linear regression, least square estimation and support vector machine prediction; finding out a change relation between parameters such as terminal monitoring pressure parameters and outlet pressure, establishing a corresponding correlation model, finally establishing a control model taking the most unfavorable point monitoring parameters as variables, collecting real-time data, inputting the model, calculating the running power of the water pump at the current moment, and adopting a machine learning algorithm to calculate the running power of the water pump. The water supply pressure of the water pump at the next time interval T is predicted, finally, a corresponding trend chart is generated, an instruction is given to the water supply pump, the water supply pump operates according to the trend chart, constant tail end pressure is guaranteed, and finally the aim of saving energy and water is achieved on the premise that water consumption of users in the area is guaranteed.

The invention discloses a manufacturability air conditioner automatic control system and an environment self-adaption adjusting method. The temperature and humidity control of the technical air conditioner is adjusted through a dual PID algorithm, the control logic is strict, and the temperature or humidity is preferentially adjusted according to the actual situation; the control effect is good, and constant indoor temperature, humidity, pressure and the like are guaranteed; safety, high efficiency and energy conservation are achieved, and high energy waste is avoided; the automatic control degree of the system is high, and the control precision, the anti-interference capability and the reaction speed of the system are improved.

The present invention relates to the field of vacuum sampling technology, and in particular to an online vacuum sampling device for a polyester polyol kettle, comprising a main body, an upper cover and a pressure gauge, wherein the upper cover is fixedly installed on the top of the main body, the pressure gauge is fixedly installed on the top of the upper cover, the side wall and the bottom of the main body are respectively fixedly installed with a feed pipe and a discharge pipe, the side wall of the main body is fixedly installed with an external branch pipe, the external branch pipe is located between the feed pipe and the discharge pipe, and the side wall of one end of the external branch pipe is fixedly installed on the outside of the main body. By intercepting the reaction liquid flowing inside the external branch pipe through a movable valve stem, it can be ensured that sampling is directly performed during the process of stirring the reaction liquid inside the main body, by the movement of piston two, it can be ensured that the pressure inside the main body is always constant during the sampling process and after the sampling is completed, by the extrusion of piston one and the extraction of piston two, it can be ensured that the reaction liquid inside the sampling tube can be completely drawn into the interior of the sampling tank after the sampling is completed.

The invention provides a liquid viscosity measuring device and method.The device comprises a measuring container used for containing liquid to be measured, the top face of the measuring container is in a cone shape extending outwards, a closed control cavity is formed in the top end of the measuring container, and the inner diameter of the control cavity is smaller than the diameter of a measuring steel ball; the measuring steel ball is arranged in the measuring container; the rotating mechanism is used for driving the measuring container to rotate by 180 degrees around the horizontal axis of the measuring container, so that the measuring container is switched between an upright state and an inverted state; one end of the control cavity is directly communicated with the interior of the measuring container, the other end of the control cavity is communicated with the interior of the measuring container through a first pipeline provided with a first stop valve, and the other end of the control cavity is further provided with a pressure relief device used for adjusting the internal pressure of the control cavity. According to the invention, the ball falling time can be accurately measured, so that the liquid viscosity measurement precision is improved.

The utility model discloses a plunger pump combination device capable of achieving linear dosing, and relates to the technical field of tail gas treatment in the gold smelting industry, in particular to the plunger pump combination device capable of achieving linear dosing, which comprises a supporting plate and a spray head, and a plunger pump body, a liquid collecting bag, a first supporting rod and a second supporting rod are respectively installed on the top of the supporting plate. According to the plunger pump combination device capable of achieving linear drug delivery, through the arrangement of a cylinder, a round rod, a turbine, a disc, a first sliding block, a connecting rod and a cavity connector, the plunger pump combination device capable of achieving linear drug delivery has the effects that the spraying position of a spray head can be conveniently adjusted in a swinging mode when a drug is sprayed, and the spraying area is increased; and after the liquid collecting bag is added, the pressure is adjusted to be constant, a linear feeding mode is changed, feeding is more uniform and stable, the working condition of the tail gas denitration process is stabilized, and the purpose of improving practicability is achieved.

The utility model discloses an exhaust structure for exhausting pressure of an atomizing mechanism during assembly and an electronic cigarette thereof. The exhaust structure is realized in two aspects. In the first aspect, the exhaust structure for pressure discharge of the atomization mechanism during assembly comprises an oil cup and the atomization mechanism, the oil cup comprises an oil cup shell, an oil tank, a sealing assembly base and a suction nozzle, and a sealing ring is arranged between the bottom of the suction nozzle and the sealing assembly base in a sleeving mode; the atomizing mechanism comprises an atomizing shell, an atomizing core assembly, an oil inlet chamber and a convex ring arranged on one side of the top of the atomizing shell, the atomizing core assembly comprises an atomizing pipe, and the atomizing pipe is located on the inner wall of the convex ring; an air blocking column is arranged on one side of the sealing assembly base, an exhaust hole is formed in one side of the top of the atomization shell, and when the oil cup and the atomization mechanism are assembled, the exhaust hole is used for discharging pressure of the oil inlet chamber; after the oil cup and the atomization mechanism are assembled, the air blocking column blocks the exhaust hole; on the second aspect, the electronic cigarette comprises an exhaust structure used for exhausting pressure of the atomization mechanism during assembly, a shell and an electric control mechanism.

The invention provides a pressure detection device for kitchen appliances and an electric stewpot thereof. The pressure detection device comprises an in-pot pressure measuring cylinder formed by combining a piezoelectric sealing seat and a pot body attaching seat which can be separated, and the top face of the pot body attaching seat is attached to the position, communicated with an exhaust valve, of the bottom face of a pot cover; the pressure transmission part is fixed on one side of the outer wall of the piezoelectric type sealing seat, and one end of the pressure transmission part is arranged in the piezoelectric type sealing seat in a penetrating mode and abuts against the piezoelectric type sealing seat; the pressure in the pot body can be detected at any time, meanwhile, the pressure transmission part can transmit detected pressure data to the outside of the pot body, the pressure data in the pot body can be observed at any time, and accurate detection of the pressure in the pot body is achieved.

The utility model discloses a kind of fine soft material efficient accurate material taking and blanking device, it is related to fine soft material material taking technical field, and it includes: support backplate, to support material taking device, bunker device and material pressing device;The bunker device is composed of bunker bottom plate, bunker left and right side plate, bunker cover plate and bunker baffle, and is fixed in the support backplate via bunker cushion block, and the bunker device is used to store fine soft material;The material pressing device includes slide rail, sliding block, press strip support plate and press strip, and the slide rail is fixed in the support backplate;The material taking device includes material taking wheel and transmission shaft, and the material taking wheel is provided with material taking groove.The technical problem to be solved by the utility model is to provide a kind of fine soft material efficient accurate material taking and blanking device, it has the advantages of accurate material taking quantity, high efficiency, and is especially suitable for the material taking unit of fine soft material automatic processing and handling equipment.

The invention discloses a solid propellant combustion residue complete collection system and method.The system comprises a combustion chamber shell, an ignition mechanism arranged in the combustion chamber shell, a clamping mechanism, a high-pressure gas cylinder and a buffer gas cylinder, and the high-pressure gas cylinder and the buffer gas cylinder are connected with the combustion chamber shell. The constant pressure in the combustion chamber shell can be realized, and the pressure fluctuation in the combustion chamber shell caused by combustion is effectively reduced; combustion residues generated by combustion of propellant medicine strips and particles dispersed in gas are collected through the collecting liquid and the outlet filter, and the technical problem that complete collection of solid propellant combustion residues is difficult to achieve only through a combustor device is solved. According to the method, the downward moving speed of the push rod is controlled to be equal to the combustion speed of the propellant strip, so that the distance between the propellant strip and the liquid level of the collecting liquid is kept constant, namely, the position of the combustion surface is kept unchanged, and the experiment reliability is further ensured.

The utility model discloses a supporting device for printing and conveying a packaging film, which comprises a workbench, the top of the workbench is fixedly connected with a printing machine, the surface of the printing machine is provided with the packaging film, the top of the workbench is fixedly connected with two symmetrical fixing plates through bolts, and the fixing plates are fixedly connected with the workbench through bolts. A driving roller is jointly installed between the two fixing plates, and sliding rails are fixedly connected to the inner walls of the two fixing plates. A packaging film is dragged to the surface of the driving roller from the previous process, the air cylinder drives the connecting plate to move downwards, the U-shaped plate drives the driven roller to move downwards and limit the packaging film under the cooperative use of the sliding rod and the fixing block, the driving roller is started at the moment, and the driving roller conveys the packaging film to the surface of a printing machine for printing. Therefore, the packaging film can be effectively prevented from drooping due to self weight or external force during printing, so that the printing effect is not influenced, and the purpose of improving the printing precision of the packaging film is achieved.

The utility model discloses an air-cooled fuel cell stack which comprises an upper end plate, a lower end plate, a plurality of bipolar plates and a plurality of membrane electrodes, the bipolar plates and the membrane electrodes are positioned between the upper end plate and the lower end plate and are alternately stacked, and each bipolar plate comprises an anode plate, a cathode plate and a cooling plate positioned between the anode plate and the cathode plate. At least two metal belts which are arranged at intervals are fastened at the peripheries of the upper end plate, the lower end plate, the bipolar plates and the membrane electrodes, and the area, facing the upper end plate or the lower end plate, of each metal belt is provided with a lug boss which is in contact with the upper end plate or the lower end plate. The utility model discloses an air-cooled fuel cell stack. The air-cooled fuel cell stack disclosed by the utility model can compensate thermal expansion and cold contraction caused by temperature change of the stack, the upper end plate, the lower end plate, the bipolar plate and the membrane electrode are kept under constant pressure, and the contact resistance can be kept stable, so that the power generation efficiency is kept stable.

The utility model relates to the technical field of high-pressure flange ball valves, in particular to a sealing structure of a marine high-pressure flange ball valve, which comprises a valve body, an O-shaped ball valve and valve seats arranged on the left side and the right side of the O-shaped ball valve. The double-pole sealing mechanism comprises two symmetrically-distributed valve seat grooves formed in the valve body, the two valve seats are located in the two valve seat grooves correspondingly, supporting rings are fixedly connected to the interiors of the two valve seat grooves correspondingly, and a plurality of belleville springs distributed in an annular array are fixedly connected between the two supporting rings and the two valve seats correspondingly. The bipolar sealing mechanism abuts against the inner wall of the valve seat groove through a first sealing ring on the outer wall of the valve seat, and a second sealing ring on the inner wall is attached to the outer wall of the O-shaped ball valve, so that two independent and complementary sealing defense lines are formed. The design of double sealing can effectively prevent sudden leakage, and the high safety requirement of a ship system is met.

The application discloses a vacuum fresh-keeping device, a control method, a refrigerator and a computer readable storage medium. The vacuum fresh-keeping device comprises: a vacuum fresh-keeping chamber for placing food materials and being connected with a refrigeration circulating air duct and a fresh-keeping circulating air duct; a vacuum pump arranged on the fresh-keeping circulating air duct and used for pumping out air or driving air circulation between the fresh-keeping circulating air duct and the vacuum fresh-keeping chamber; and a first control valve arranged at an outlet end of the fresh-keeping circulating air duct and used for opening and closing the fresh-keeping circulating air duct, and an interface for connecting the outside world is further arranged. The vacuum fresh-keeping device is of a continuous air pumping type, the whole system can continuously operate without interruption, that is, air is continuously pumped out and air is continuously input in equal amounts, the pressure is kept constant, and the food materials can be kept in a constant low pressure and humid fresh gas at all times.

The utility model relates to the field of taking sample with pressure relates to a kind of pressure vessel takes sample device, including sampling tube and pressure vessel main body, the right side of the pressure vessel main body is equipped with main valve pipe, first control valve and second control valve are sequentially installed from left to right on the main valve pipe, the bottom end of the main valve pipe is equipped with auxiliary valve pipe, sampling valve is installed on the auxiliary valve pipe, the bottom end of the auxiliary valve pipe is equipped with mounting pipe, the sampling tube is connected with mounting pipe, cooling jacket is installed on the outside of the sampling tube.This pressure vessel takes sample device through first control valve and second control valve on the main valve pipe and sampling valve on the auxiliary valve pipe, the structure of double valve group is used to ensure the stability that sampling can be safely closed, open sampling valve on the auxiliary valve pipe, powder sample in the inside of pressure vessel main body can be into the inside of sampling tube to realize sampling, the structure realizes the function of convenient safety sampling, solves the problem of poor sampling safety.

The invention relates to the technical field of material viscoelasticity testing, and provides an instrument and a method for accurately testing viscoelasticity parameters of an optical glass material. The invention comprises: a frame; the working cavity comprises a closed cavity body, heating pieces arranged at the periphery of the closed cavity body, a sample bracket and a force sensor; the sample bracket and the force sensor are arranged in the closed cavity; the force module comprises a lifting support, an electromagnetic inductor, a lower pressing block and a pressure ejector rod. The lower pressing block is arranged on the side, provided with the electromagnetic inductor, of the lifting support in parallel. The lifting support can lift up and down to drive the pressure ejector rod to make contact with a sample, and the electromagnetic inductor can provide downward step force for the lower pressing block and the pressure ejector rod after being powered on. The displacement detection assembly comprises a displacement sensor used for monitoring axial deformation of the sample after the sample is stressed. According to the invention, ideal step force can be realized, and more ideal creep test load conditions can be met; the acquisition of ideal viscoelastic creep data is ensured, and the test accuracy is improved.

The application discloses a kind of segmented hole sealing multi-tube synchronous grouting device and construction method, belong to grouting equipment technical field, including multiple grouting pipes, multiple segmented covers, multiple segmented membrane bags and multiple pressure valves;Multiple segmented covers are set on multiple grouting pipes according to preset grouting section distance interval along grouting pipe length direction;Each grouting pipe includes inlet section pipe body and outlet section pipe body, inlet section pipe body is provided with membrane bag inlet, outlet section pipe body is provided with grouting port, and the membrane bag inlet and grouting port of each grouting pipe are set according to preset grouting section distance interval;Each segmented membrane bag is located at adjacent grouting section boundary and wraps corresponding membrane bag inlet;Each pressure valve is installed inside grouting pipe and located in the pipe section covered by segmented membrane bag, and the pressure valve is configured to: when the pressure of liquid in the pipe is less than the set threshold, it is closed, and it is opened and kept irreversible opening after exceeding the threshold.The application realizes reliable segmented hole sealing, prevents grouting and multi-tube synchronous grouting, improves construction efficiency and grouting quality.

The application discloses a fresh water circulating aquaculture whole-process water treatment system and method, and belongs to the technical field of circulating aquaculture water treatment. The system comprises a water inlet treatment subsystem, an aquaculture pond subsystem and a tail water treatment subsystem which are sequentially and circularly connected. The water inlet treatment subsystem comprises a water storage tank, a sand filter tank and a filtered water tank which are sequentially connected. The aquaculture pond subsystem comprises a plurality of aquaculture pond circulation combinations, and each aquaculture pond circulation combination comprises an aquaculture pond cluster, a first microfilter, a circulating pump pond, a biological aerated filter, a disinfection pond, a decarbonization device and an oxygenation and temperature adjustment pond which are sequentially and circularly connected. The tail water treatment subsystem comprises a second microfilter, a sulfur autotrophic denitrification pond and an SBR reaction pond cluster which are sequentially connected. The system integrates fresh water circulating water treatment, tail water treatment and source water treatment, can meet the requirements of medium and large fresh water circulating aquaculture plants on aquaculture water quality, can save land occupation and investment, and meets the requirements of green and sustainable development.

The present application relates to rocket propellant storage and transportation system, specifically relates to a kind of rocket propellant vehicle-mounted storage and transportation system and its filling method, for solving the insufficient airtightness of existing rocket propellant vehicle-mounted storage and transportation system in the process of transportation, temperature control is unreliable, the temperature, pressure, liquid level and other conditions of rocket propellant cannot be monitored in real time, and the residual rocket propellant in the pipeline of vehicle-mounted storage and transportation system cannot be handled.The rocket propellant vehicle-mounted storage and transportation system includes automobile chassis, tank body, filling pipeline system and control system;The tank body of the present application has good heat preservation effect and sealing, can fully ensure the temperature and pressure of rocket propellant in tank body constant during transportation, and temperature, pressure and liquid level in tank body can be monitored in real time through first pressure gauge, liquid level meter, thermometer control system, fully ensure the stability of the physicochemical properties of rocket propellant in tank body.

The utility model provides a central hobbing cutter capable of adjusting pressure. Comprising a cutter ring, a cutter body, a check ring, a cutter shaft, an end cover, a locking nut, a bimetallic floating seal, a middle cutter rest, a distance sleeve, a bearing and a pressure adjusting device. The cutter ring is assembled on the cutter body, and the check ring is welded and fixed; bearings are assembled in an inner cavity of the cutter body, a cutter shaft is assembled on the bearings, and a distance sleeve is arranged between the two bearings to adjust an axial gap; a middle knife rest is arranged between the two knife bodies, end covers are arranged at the outer ends of the two knife bodies, a left end cover is assembled at one end of a knife shaft, and the knife shaft penetrates through a bearing to be assembled with a right end cover and is locked and fixed through a locking nut. Bimetal floating seals which are installed back to back are arranged at the adjacent positions of the end cover, the middle tool rest and the bearing respectively. Each bimetal floating seal comprises an O-shaped sealing ring and a metal retainer. The pressure adjusting devices are arranged at the two ends of the cutter shaft, when the external pressure is larger than the internal pressure of the hobbing cutter, the pressure adjusting devices maintain the internal pressure of the hobbing cutter, and it is guaranteed that the two cutter rings of the hobbing cutter are adjusted respectively.

The invention discloses a constant pressure stabilizing device for a diesel engine preheating system, which belongs to the technical field of diesel engine preheating, and comprises a connecting valve integrated into an integral structure, a fuel tank for containing diesel, a low-pressure pump for extracting and pressurizing diesel from the fuel tank, a diesel fine filter for filtering diesel, a solenoid valve for controlling the oil inlet and oil return of a flame jet preheater, and a flame jet preheater in which diesel is burned; diesel flows into the connecting valve through the diesel fine filter, and the connecting valve reduces the pressure and flow of diesel and then flows into the flame jet preheater through the solenoid valve for combustion; excess diesel flowing into the flame jet preheater flows back into the connecting valve through the solenoid valve and the oil return pipe and then returns to the fuel tank. The connecting valve designed in the invention reduces the pressure and limits the flow of a relatively large diesel pressure by designing a damping hole in the oil inlet line, and adds a one-way valve on the oil return line to stabilize the oil pressure and ensure the normal flow direction of the diesel, thereby achieving the purpose of a constant oil supply system pressure.

The present invention discloses a bladder cancer treatment pressure measuring device and a bladder cancer treatment method based on the device, and relates to the technical field of bladder cancer detection and treatment, comprising a water seal bottle, the upper cover of the water seal bottle is closed with an end cover, the middle part of the end cover is provided with a detachable mounting part; the mounting part is provided with a venting tube, a connecting column and a liquid injection port; the top of the connecting column is plugged with a connecting tube; and also comprises a double-lumen urinary catheter and a urine collector. The present invention arranges a water seal bottle, a connecting tube, a urinary catheter and a urine collector, the urinary catheter cavity of the double-lumen urinary catheter is connected with the urine collector, the water seal bottle connected with the atmosphere is connected with the bladder, physiological saline is injected into the bladder, when the liquid in the water seal bottle is stable, the pressure in the bladder is consistent with the atmospheric pressure, so that the pressure and capacity in the bladder are kept constant during the whole treatment process, thereby ensuring that the carbon ion high-LET radiation can be adjusted and embedded in the tumor target area, so as to minimize the dose of surrounding normal tissues.

The utility model discloses a traction device for polyethylene medicinal bag production, which comprises a base, two groups of first mounting racks are fixedly mounted on the base, a traction roller is arranged between the two groups of first mounting racks, a polyethylene bag body is curled on the outer surface of the traction roller, two groups of second mounting racks are fixedly mounted on the base, and the polyethylene bag body is curled on the outer surface of the traction roller. A cross beam is fixedly connected between the two second mounting frames, two sliding grooves are formed in the bottom of the cross beam, sliding seats are slidably mounted in the two sliding grooves, connecting rods are rotatably mounted at the bottoms of the sliding seats, fixing seats are rotatably mounted at the bottoms of the connecting rods, and mounting plates are fixedly mounted at the bottoms of the fixing seats; the two ends of the mounting plate are fixedly connected with guide plates. According to the polyethylene bag collecting device, the two sides of the collected polyethylene bags can be limited all the time through the guide plates, it is guaranteed that the phenomenon that the edges of the polyethylene bags are turned unevenly is avoided during collection, and the production yield of the polyethylene medical bags is increased.

The invention provides a wave compensation type closed telescopic pump control hydraulic system for a maritime work trestle, which comprises a hydraulic main loop, an auxiliary oil source device and a constant pressure air source device, and the hydraulic main loop comprises a servo motor, a two-way constant displacement pump, an overflow valve group, a one-way valve group, a reversing valve group, a pressure reducing valve, a sensor and a two-way pump motor; three wave compensation modes of active compensation, constant thrust compensation and floating compensation are achieved through the hydraulic main loop, the auxiliary oil source device and the constant-pressure air source device, and contact with the side face of a target platform with constant extrusion force is achieved through the constant thrust compensation mode when the offshore platform does not support rigid connection; the method is jointly realized through an active compensation mode and a floating compensation mode, when the method faces an offshore platform supporting rigid connection, rigid connection is completed, self-adaptive compensation is carried out along with wave fluctuation, and energy consumption is reduced.

The utility model discloses a waste material winding mechanism of blister forming machine relates to blister forming machine waste material collection technical field, including frame, be equipped with winding roller through bearing on the frame, the outside of winding roller is equipped with winding drum, just the inside installation of winding roller has control piece and fixed part, control piece is used for driving fixed part radial movement to with winding drum clamping or release, still be equipped with telescopic part on the frame, the output of telescopic part is connected with tight pressure roller spare, is used for exerting the preset pressure to the waste material in the winding process. The waste material winding mechanism of blister forming machine, realizes winding drum quick clamping and release through rotating driving shaft, and the operation is simple, and tight pressure roller spare cooperation pressure sensor and spring, realize constant pressure flexible compression, effectively prevent loose roll, wrinkle, improve winding quality and the efficiency of material replacement.

The utility model discloses an ink adding device of a marking machine, which comprises a control module, an output of the control module is connected with a normally open contact of a relay, the relay is connected with a motor of a diaphragm pump, ink is stored in an ink pot, the ink pot is connected with an input port of the diaphragm pump through an oil pipe, and an output port of the diaphragm pump is connected with an ink box through an oil pipe. A pressure switch unit is arranged on the oil pipe, is connected with the control module, reads the pressure value of the printing ink in real time, outputs an analog quantity signal to the control module, performs analog-to-digital conversion by the control module and sets a numerical range, and outputs a signal to the relay within the numerical range; a relay pull-in power supply is connected with a diaphragm pump motor, and a diaphragm pump is started to pump ink in the ink pot to supply ink to the ink box. The printing ink supply device has the advantages that the printing ink supply is accurately controlled, and the marking definition is improved.

The utility model provides an XPS special-shaped extruded sheet edging device which comprises an edging device body, the edging device body comprises a bottom plate, an edging frame, a hoisting mechanism and a clamp, the edging frame is fixedly installed at the two ends of the surface of the bottom plate, an edging roller is installed in the middle of the bottom plate, the hoisting mechanism is installed at the top of the edging frame, and the clamp is installed on the bottom plate. A lifting rope is connected in the lifting mechanism, the bottom of the lifting rope is connected with the top end of a clamp, and the clamp comprises two parallel clamping plates. According to the edge grinding device, the special-shaped extruded sheet is moved in the vertical state, the bottom edge grinding process is completed in the moving process, the grinding efficiency is improved, labor is saved in the moving process, convenience is achieved, and high stability is achieved. When any position of the bottom of the special-shaped extruded sheet is polished, the pressure between the special-shaped extruded sheet and the edge polishing roller is always kept constant, so that the polishing effect of any position can be kept uniform, the edge polishing pressure is flexible and controllable, and the adjusting process is simple and convenient.