284results about How to "No leakage" patented technology

The invention provides a preparation method of a gate structure and a pHEMT device. The preparation method comprises the following steps: forming a first photoresist layer with a first opening on a substrate; etching the substrate along the first opening to form a trapezoidal groove of which the bottom width is greater than the width of the first opening; a first metal layer and a dielectric layer are formed, the first metal layer covers part of the bottom wall of the trapezoidal groove under the first opening, and the dielectric layer covers the area, not covered by the first metal layer, of the trapezoidal groove; forming a second photoresist layer with a second opening, wherein the second opening and the first opening are communicated to form a T-shaped window; and a second metal layer is formed in the T-shaped window, and the second metal layer and the first metal layer jointly form a gate structure. Before the photoresist layer is removed, the dielectric layer is deposited to protect the exposed substrate, so that the surface of the exposed substrate can be prevented from being oxidized, the problem of electric leakage or short circuit of a device caused by the fact that metal chips fall on the surface of the substrate is solved, and the damage of a subsequent cleaning process to an etching groove can be reduced.

The utility model relates to a lightning protection and insulation withstand voltage protection circuit, which is characterized in that a circuit is formed by piezoresistors MOV1, MOV2, MOV3 and MOV4, when surge voltage such as lightning stroke and the like exceeds rated voltage, the values of the piezoresistors in a parallel circuit are suddenly reduced to be conducted, high voltage passes through gas discharge tubes G1 and G2, and after lightning transient overvoltage is discharged, the circuit is discharged by a grounding wire. Meanwhile, the resistance value of a piezoresistor MOV5 connected in the LN circuit in parallel is sharply reduced to be switched on, and a fuse Ft is burnt out by instantaneous strong current, so that electric equipment such as an LED power supply and the like is prevented from being damaged. In addition, the technical scheme has a protection mode of lightning protection and discharge resistor combination of resistors R1, R2 and R3, can meet the requirements of lightning protection and high voltage, has the characteristics of no leakage current, no follow current and the like, and effectively prolongs the service life of an LED system.

Automatic hand guard buckle assembling equipment belongs to the technical field of assembling and comprises an incoming material detection device, a six-axis robot, a robot control cabinet, a buckle assembling mechanism, a vibration disc supporting table, a vibration disc, a discharging groove, a supporting frame, a product containing base, a product containing mold, a pressing mechanism, an electric quick plug, a material distributing mechanism and a waste material removing mechanism. The buckle assembling mechanism comprises an assembling mechanism frame, an assembling lifting air cylinder, a guide sliding block guide rail, a sliding block, an assembling chuck and a sliding plate. A buckle is automatically fed to a buckle input station through a vibration disc, a material distributing plate sucks the buckle, and a material distributing motor drives the material distributing plate to move forwards through an output shaft to feed the buckle material to a buckle material station; the assembly lifting cylinder drives the assembly chuck to move up and down; the incoming material detection device outputs a signal to the six-axis robot after detecting the buckles, the assembling chuck descends through movement of the sliding plate and the sliding block guide rail, and the air cylinder is used for driving to grab the buckles and automatically assemble the buckles. The utility model has the beneficial effects that the assembly quality is ensured, and the production efficiency is high.

The utility model relates to the technical field of glazing of anti-glaze-flowing biscuits, in particular to an automatic glazing device for anti-glaze-flowing biscuits of antibacterial easy-glaze-cleaning bathroom ceramics, which comprises a base and a mounting seat arranged at the top of the base. The automatic glazing device for the anti-glaze-flowing biscuit further comprises a storage barrel, a connecting base, a stirring plate, a dust removal stirring plate, a lifting mechanism, a horizontal adjusting mechanism and a positioning rotating mechanism, the storage barrel is arranged in the mounting base in a sealed mode, the connecting base is arranged at the axis of the mounting base, and a working motor is arranged at the input end of the connecting base; the stirring plates are annularly distributed on one side of the connecting base, the dust removal stirring plates are arranged on the outer sides of the stirring plates, and the lifting mechanisms are symmetrically arranged on the top of the base; the connecting base is driven by the working motor to rotate, the stirring plate is driven to work when the connecting base rotates, glaze stirring is achieved, the dust removal stirring plate is driven to rotate under the action of the stirring plate, workers can conveniently clean the inner wall of the storage barrel, and glaze is prevented from being left on the inner wall of the storage barrel.

The invention relates to a high-efficiency large-scale coupling hydrogen production process and system, an alkaline water electrolysis hydrogen production system, an ammonia water distillation system, an ammonia decomposition system and a hydrogen separation and collection system are coupled, alkaline liquor in the alkaline water electrolysis hydrogen production system is not recycled in an electrolysis system but is directly sent to the ammonia water distillation system, a reactive distillation mode is adopted, and the hydrogen separation and collection system is directly sent to the ammonia decomposition system. The method comprises the following steps of: reacting alkali liquor with fixed ammonium in ammonia water to generate volatile ammonia, carrying out step-by-step steam stripping condensation, sending enriched ammonia-containing non-condensable gas to an ammonia decomposition system for catalytic decomposition to obtain hydrogen-containing process gas, separating and purifying to obtain hydrogen, and finally collecting the hydrogen and hydrogen prepared by water electrolysis to serve as a product hydrogen to be sent to downstream users. Compared with the traditional water electrolysis process for recycling the alkali liquor, the method has the advantages that the influence of impurity ion accumulation and insoluble small particles on the quality of the electrolyte after the alkali liquor is recycled is avoided, the conductivity of the electrolyte is improved, the electrolysis power consumption is reduced, the electrolysis hydrogen production efficiency is improved, and the electrolysis hydrogen production yield is increased.

The utility model discloses an ozone generator which comprises a shell, supporting legs are fixedly connected to the bottom of the shell, an end cover is arranged on the left side of the shell, an air inlet pipe is fixedly connected to the front side of the shell, a discharge pipe is fixedly connected to the right side of the shell, an ozone exciter is fixedly connected to the inner side of the shell, and a mounting hole is formed in the shell. Under the action of self elasticity of a second spring, the second spring pushes a fixing plate out of the shell through a supporting block and a push rod, a drying layer and a filtering layer can be detached, then a new drying layer and a new filtering layer are pushed in the shell, and when a limiting block moves to a mounting hole, the drying layer and the filtering layer can be detached. And under the action of self elasticity of the first springs, the first springs drive limiting blocks to be inserted into mounting holes through sliding blocks, a fixing plate is limited and fixed, a drying layer and a filtering layer are mounted well, replacement of the drying layer and the filtering layer is completed, and therefore the drying layer and the filtering layer are convenient to replace in the using process.

The invention is applicable to the technical field of medical CT (computed tomography) machines, and provides a medical CT machine artifact elimination method which comprises the following steps: S1, placing a patient on a CT machine scanning bed, ensuring that the patient is comfortable and a scanning area is positioned in the visual field of a scanner, and ensuring that the patient does not carry metal articles to influence and damage the CT machine; s2, the monitoring module comprises a respiration sensor, the respiration sensor is adopted to collect respiration signals of the patient, signal recording and signal analysis are carried out, a respiration cycle is established through analysis, and the respiration cycle is output; s3, the analysis module obtains the respiratory cycle transmitted by the monitoring module, splits and processes the respiratory cycle, divides the respiratory cycle into a plurality of phases through the analysis module, and initiates instructions to the scanning device according to different phases; the device solves the problem of scanning artifacts caused by body movement caused by breathing when a patient is subjected to CT scanning, and achieves the purpose of eliminating the breathing artifacts through breathing monitoring, scanning strategy changing and only transmission of a scanning result when the patient is stable.

The embodiment of the invention discloses an operation method of a multifunctional test system of a vacuum angle valve. The multifunctional test system of the vacuum angle valve comprises a control module, a position sensing module, a pressure adjusting module and a negative pressure generating module. The operation method comprises the steps that position information of the position sensing module is obtained through the control module, the pressure of the gas control end or the pipeline inlet of the angle valve to be measured is adjusted through the pressure adjusting module, and the negative pressure of the pipeline outlet of the angle valve to be measured is adjusted through the negative pressure generating module. At least two of the stroke, the response time, the control pressure, the fatigue test and the withstand pressure of the to-be-tested angle valve are tested. According to the operation method provided by the embodiment of the invention, multiple tests can be performed on the to-be-tested angle valve so as to meet the scene requirements of frequent tests and debugging in the research and development process of the pneumatic angle valve.

The utility model provides cooling equipment for insulating oil production, and relates to the technical field of insulating oil production, the cooling equipment comprises a storage barrel, a heat dissipation mechanism is mounted in the storage barrel, a liquid discharge pipe is mounted at the lower end in the storage barrel in a penetrating manner, the heat dissipation mechanism comprises a plurality of stirring plates, and the stirring plates are arranged in the storage barrel. And guide holes are formed in the stirring plates in a penetrating manner. After raw materials are poured into the storage barrel, a motor controls a second liquid guide pipe and a lower connecting disc to drive a stirring plate to stir and dissipate heat of the raw materials, and meanwhile cooling liquid enters a guide hole along a liquid inlet pipe and a first connecting pipe, so that the raw materials are subjected to cold and heat exchange with the cooling liquid in the guide hole through the stirring plate, and the cooling liquid is cooled; and then cooling liquid obtained after cold and heat exchange can return to an external recycling box along the waste liquid pipe to wait for cooling, the cooling liquid can be used for the second time or even multiple times after cooling is completed, and the overall machining cost is reduced.

The invention provides a shaped phase change material and a preparation method thereof. The phase change material is prepared from the following raw materials in percentage by mass: 45.8 to 56.7 percent of sodium phosphate dibasic dodecahydrate, 7.9 to 22.9 percent of sodium carbonate decahydrate, 7.6 to 15.9 percent of sodium sulfate decahydrate, 2.46 to 4.05 percent of a reinforcing material and 15 to 20 percent of an adsorbing material. The preparation method of the phase change material comprises the following steps: 1, preparing materials; 2, preparing an inorganic salt mixture; 3, preparing a molten inorganic salt mixture; 4, preparing a mixed material and sealing; and 5, preparing the shaped phase change material. The shaped phase-change material prepared by the invention has the advantages of proper phase-change temperature, higher phase-change latent heat, no liquid leakage, no toxicity, no inflammability, small supercooling degree and no phase separation; meanwhile, for application occasions where transportation and storage need to be carried out at the temperature of 20-30 DEG C, the shaped phase change material can serve as an effective normal-temperature cold storage agent and is used for resisting a low-temperature environment so as to protect specific chemicals and pharmaceuticals from being influenced by temperature fluctuation.

The invention belongs to the technical field of two-way cartridge valves, and particularly relates to a large-flow two-way cut-off two-way cartridge valve based on quantitative control, which comprises a main valve, a pilot electromagnetic valve, a cover plate, a first one-way valve and a second one-way valve, the main valve comprises a main valve sleeve, a main valve core, a main valve spring and a cover pad; the pilot electromagnetic valve comprises a pilot valve sleeve, a pilot valve element, a pilot reset spring, a pilot cone valve element, an armature, a threaded sleeve and a coil. A first working opening and a second working opening are formed in the side face and the bottom of the main valve respectively, the main valve element is arranged in an axial hole of the main valve sleeve, the cover gasket is arranged at one end of the main valve sleeve, the main valve spring is arranged in an inner hole of the main valve element, and the cover plate is fixedly installed at the upper end of the cover gasket. The device solves the problem that the quantitative release effect is influenced by low release amount precision during quantitative release due to the fact that an existing two-way cut-off two-way cartridge valve is large in leakage after being used for a long time, cannot play a role in pressure maintaining and is slow in response time.

The invention relates to the technical field of hopper conveying, in particular to a flexible hopper device which comprises a hopper body. The device is characterized by further comprising a hopper rubber sleeve, a fixing mechanism, a flapping mechanism and a pipe clamping mechanism; the hopper body is connected with a fixing mechanism. The fixing mechanism is connected with a hopper rubber sleeve, and the hopper rubber sleeve is provided with a shaping ring; the hopper main body is connected with a flapping mechanism, and the flapping mechanism is connected with the middle part of the hopper rubber sleeve; the flapping mechanism is connected with a pipe clamping mechanism, and the pipe clamping mechanism is connected with the bottom of the hopper rubber sleeve. The hopper rubber sleeve is extruded and fixed through the clamping piece, the clamping head on the clamping piece is limited through the first groove and the second groove, the phenomenon that the clamping head slips during extrusion and fixation is prevented, meanwhile, magnetic attraction force is formed between the clamping head and the supporting piece through the clamping head, the fixing effect on the hopper rubber sleeve is further improved, and the service life of the hopper rubber sleeve is prolonged. And the problem that when the flapping mechanism works, equipment shakes, and then the rubber sleeve of the hopper falls off is solved.

The invention relates to the technical field of puncture equipment, in particular to a bone marrow puncture infusion device which comprises a puncture portion and an infusion portion, the puncture portion is composed of a puncture seat and a puncture needle, the puncture needle is mounted on the puncture seat, the infusion portion is composed of an infusion seat and an infusion tube fixed on the infusion seat, and the puncture seat is detachably connected with the infusion seat. The puncture needle is inserted into the infusion tube in a penetrating mode, the end, away from the puncture base, of the puncture needle is provided with a drill bit, the infusion tube is provided with a plurality of adjusting gaskets, the insertion depth of the puncture needle is controlled, and the infusion tube has a better infusion effect. And the puncture needle section facilitates quick entry, and puncture is labor-saving. A manual driving accelerating device is additionally arranged, so that the pain time of the patient is shortened. And after entering, the stability is higher, the drill hole is not easy to expand, the leakage of rescue medicines is avoided, the infusion is smoother, and the risk of blockage is avoided. And a pulling-out device and depth adjusting design are matched, so that more labor is saved during needle pulling, and a needle tube is not easy to bend or break. In conclusion, a better infusion effect can be achieved.

The invention relates to the technical field of hemodialysis, and discloses a hemodialysis pipeline connecting device which comprises two pipeline mechanisms, a connecting mechanism is jointly connected between the two pipeline mechanisms, the connecting mechanism comprises an outer shell, sealing sleeves are fixedly installed at the two ends of the outer shell, and the two ends of the outer shell are each fixedly provided with one sealing sleeve. The sealing sleeve is arranged on the periphery of the pipeline mechanism in a sleeving mode. Sealing mechanisms are further arranged at the two ends of the connecting mechanism, each sealing mechanism comprises outer sliding ring bodies arranged on the two sides of the outer shell, multiple sets of first sealing gaskets are fixedly installed at one ends of the outer sliding ring bodies, and the rotating pipeline body or the outer shell, the inner sliding ring bodies and the fixed ring bodies are screwed together. The first sealing gaskets are twisted in the annular space until the edges of the adjacent first sealing gaskets are attached to each other and completely contained in the annular space, so that the inner sliding ring body, the first sealing gaskets and the pipeline body can be tightly attached together.

The utility model belongs to the technical field of motor vehicles and air filters, and particularly relates to an air filter, an engine system and a motor vehicle. The air filter comprises a shell and further comprises an air inlet pipe and an exhaust pipe which are connected to the shell. A filter element is arranged in the shell and divides the inner space of the shell into an air inlet cavity and an air outlet cavity. The air inlet pipe is communicated with the air inlet cavity, and air to be filtered is introduced into the air inlet cavity; the exhaust pipe communicates with the exhaust cavity, and air entering the exhaust cavity after being filtered by the filter element is led out. The air filter is further provided with an improved buffer connection structure and an exhaust pipeline. The air filter is durable and stable in filtering efficiency, low in operation noise, convenient to maintain and install and suitable for diversified use environments and conditions. On the basis, the utility model further provides an engine system and a motor vehicle.

The present invention relates to an aviation pressure oil pumping joint, one end of the hose joint assembly of the oil pumping joint is connected to the oil delivery hose, the other end of the hose joint assembly is clamped with a filter screen, the filter screen is set in a direction that matches the fuel flow direction, and one end of the hose joint assembly clamped with the filter screen is connected to a pressure stabilizer through a connector, the connector is composed of a first connector and a second connector, the second connector is sleeved with the first connector, the first connector is sleeved with one end of the hose joint assembly clamped with the filter screen, and the internal pressure stabilizing spring support force of the pressure stabilizer is 0.08Mpa±0.01Mpa. The aviation pressure oil pumping joint of the present invention is firmly connected, there is no leakage during the oil pumping process, the negative pressure of the oil pumping does not exceed 0.08Mpa, and the oil pumping filter screen can filter oil products normally, which fully meets the oil pumping requirements of airlines and prevents the filter screen from being deformed and damaged by suction.

The utility model relates to a prefabricated vegetable sampling and detecting device which comprises a storage tank, a sampling opening is formed in the side wall of the storage tank, the sampling opening is obliquely arranged, a sleeve is inserted into the sampling opening in a sealed mode, a one-way sealing plate is plugged at the inner end of the sleeve, one end of the one-way sealing plate and the sleeve are assembled in a hinged mode, and a torsional spring is connected between the one-way sealing plate and the sleeve. The sampling detection device further comprises a sampling tube inserted in the sleeve in a guiding mode, the sampling tube is rotationally assembled in the sleeve, a sampling part is arranged at the front end of the sampling tube, a rotating part is arranged at the rear end of the sampling tube, the sampling part comprises a sampling head with an inner cavity, a sampling groove is formed in the side wall of the sampling head, and the rear end of the sampling head is sleeved with a rubber sleeve. The rubber sleeve is attached to the inner side wall of the sleeve in a sealed mode, and after the sampling pipe is inserted into the sleeve, the sampling pipe can push the one-way sealing plate forwards to be inserted into the tank; and the outer diameter of the rubber sleeve is smaller than that of the rear end of the sleeve, so that the sampling tube freely moves out of the sleeve when retreating backwards. The structure is simple, sampling is convenient, and operation is easy.

The utility model relates to the technical field of filtering devices, and provides a filtering device which comprises a funnel, the first filter cartridge is arranged in the funnel, and the outer wall of the first filter cartridge abuts against the inner wall of the funnel; the sealing cover is arranged at the opening of the first filter cartridge and is used for sealing the first filter cartridge; the piston rod is vertically and slidably arranged in the center of the sealing cover, and the outer side of one end of the piston rod abuts against the inner wall of the first filter cartridge; the sealing plug is arranged in the liquid inlet and used for sealing the liquid inlet. By means of the technical scheme, the problem that in the prior art, the funnel is low in liquid filtering efficiency is solved.

The utility model relates to a drainage device with good sealing performance. The drainage device comprises a drainage tube, a drainage bottle and a sealing mechanism arranged at one end of the drainage tube. The sealing mechanism comprises a first rotating ring fixedly arranged on the drainage tube in a sleeving mode, a first cavity formed in the first rotating ring, a sealing ring arranged in the first cavity, an extrusion ring arranged above the sealing ring, a pressing plate fixedly arranged on the extrusion ring and multiple sets of moving assemblies arranged on the pressing plate at equal intervals in the circumferential direction. By means of the sealing mechanism, after the drainage tube and the drainage bottle are installed, the sealing performance between the drainage tube and the drainage bottle is good, and the phenomenon of liquid leakage is further avoided.

The invention discloses a water quality detection device with a backwashing function, and relates to the technical field of water quality detection.The water quality detection device comprises a detection frame and further comprises a separation assembly, detection equipment is arranged on the inner wall of the detection frame, a water outlet pipe is fixedly installed on the right side of the detection frame, and a water inlet frame fixedly penetrates through the top of the detection frame; a servo motor is fixedly installed on the right side of the detection frame, the separation assembly comprises a lead screw, a movable plate, backwashing equipment, an L-shaped rack, a separation plate, a rotating rod, a gear, a U-shaped rod and an arc-shaped plate, the arc-shaped plate is impacted by the U-shaped rod to deform and vibrate, the arc-shaped plate vibrates to drive the separation plate to vibrate, and after deposits are pushed to be loose by the U-shaped rod, the separation plate is separated from the rotating rod. The backwashing equipment is started to perform backwashing operation on the separation plate, and stubborn stains and sediments can be effectively broken and loosened by pushing and wiping the sediments through the U-shaped rod, so that the separation effect of the separation plate on solid particles in a water body before water quality detection is improved.

The present invention provides a method for preparing a high temperature resistant cladding of a quartz optical fiber with integrated strengthening and toughness, which mainly solves the problems that the melting point of the optical fiber metal cladding is low, the environmental adaptability is poor, and the metal cladding has a great influence on the macrobending loss characteristics of the optical fiber. The scheme adopted by the present invention includes a BN inner cladding and an outer cladding; wherein the BN inner cladding is prepared by a chemical vapor deposition method, and the outer cladding is prepared by a polymer-derived ceramic method; by adding the modified SiCw to a precursor solution, after ultrasonic cleaning, the SiCw with amino groups grown is placed in the precursor solution for immersion, and then solidified and cracked to obtain a quartz fiber coated with a BN / SiBCN-SiCw double cladding; the method of the present invention improves the strength and toughness of the quartz optical fiber simultaneously, realizes the purpose of integrated strengthening and toughening of the quartz optical fiber, and also improves its service ability in harsh environments.

The present invention relates to the technical field of cleaning equipment, and more specifically discloses a cleaning device for an electric oven shell, comprising a cleaning component, one side of the cleaning component is fixedly connected to a spray component, and the other side of the cleaning component is fixedly connected to a collecting component; in the process of cleaning the square electric oven shell, the present invention allows an operator to hold two U-shaped positioning handles with both hands, and then adjust the distance between the two U-shaped positioning handles according to the width of the electric oven shell to be cleaned, thereby matching the length of the two rotating brush components with the width of the square shell to be cleaned, and then pressing the device to make the telescopic soft plate fit the shell of the electric oven until the outer side of the rotating brush component fits the shell of the electric oven, thereby ensuring that the mixed liquid after cleaning will not leak out, thereby ensuring the cleanliness of the working environment, and eliminating the need for the operator to perform secondary cleaning of the working environment, thereby facilitating use by users.

The utility model relates to a cooling circulation system for positive tricycle motorcycle, including engine, engine crane, frame, engine outlet pipe, three -way valve, radiator inlet pipe, radiator, radiator outlet pipe, auxiliary water tank and engine inlet pipe, one end of engine outlet pipe communicates with the water outlet of engine, and the other end communicates with the water inlet of three -way valve, one end of radiator inlet pipe communicates with the first water outlet of three -way valve, and the other end communicates with the water inlet of radiator, one end of radiator outlet pipe communicates with the water outlet of radiator, and the other end communicates with the water inlet of auxiliary water tank, one end of engine inlet pipe communicates with the water outlet of auxiliary water tank, and the other end communicates with the water inlet of engine, the utility model can promote engine heat dissipation efficiency, solve engine high temperature problem, can satisfy winter cab heating demand again, strengthens system stability simultaneously, prolongs the life and reduces user maintenance cost.

The utility model discloses a stirring machine which comprises a cup body and a machine base. A connecting rod, a guide rod and an induction piece are arranged in the machine base, and the machine base comprises a cup base. The cup base comprises an outer ring part and an inner ring part. One end of the cup body is an open end, the other end is a closed end, and the open end is in threaded connection with the outer ring part; at least part of the connecting rod is accommodated in the outer ring part; a sealing piece is further arranged on the end face of the inner ring part. When the cup body is not installed on the machine base, the connecting rod abuts against the side wall of the sealing piece. When the guide rod is located at the non-triggering position, the induction piece is not activated, and the stirrer cannot be started to operate; when the cup body is installed on the machine base, the opening end of the cup body extrudes and pushes the connecting rod to horizontally move outwards to be away from the sealing piece, then the guide rod is driven to move, the guide rod moves to the triggering position from the non-triggering position, at the moment, the induction piece is activated, and the stirring machine can be started to operate. Whether the cup body is installed in place or not can be effectively recognized, a user is prevented from being scratched by a blade rotating at a high speed, and safety is higher.

The utility model provides a button cell protection shell with high sealing performance and a button cell, the button cell protection shell comprises a first pole shell and a second pole shell, and pits are uniformly distributed on the surface of the opening end wall of the first pole shell along the circumferential direction; an annular sealing material layer is integrally formed on the surface of the opening end wall of the first pole shell in an injection molding mode, and the sealing material layer covers the concave pit and fills and levels up the concave pit; and an annular sealant layer is also arranged between the inner surface of the second pole shell and the outer surface of the sealing material layer. The button cell protection shell and the button cell using the button cell protection shell have better sealing performance, the cell does not leak liquid after being stored for a long time, a button cell production line is easy to refit, and the refit cost is reduced.

The utility model discloses an oil well produced liquid sampling visual recovery device which comprises a liquid storage tank, and an exhaust valve is arranged on the liquid storage tank. The transparent sampling tube is connected to the liquid storage tank; the liquid pumping assembly is arranged on the liquid storage tank; the liquid flow pipe is connected to an oil well liquid production device, is communicated with the transparent sampling pipe through a liquid inlet valve, and is connected with the output end of the liquid pumping assembly through a liquid outlet one-way valve; according to the device, when sampling analysis is not needed, the sampling valve can be closed, the seed state and form of the produced fluid can be observed only through the transparent sampling pipe, the produced fluid is pumped back through the liquid pumping assembly, waste of the produced fluid and hazardous waste treatment are avoided, when sampling analysis is needed, only the sampling valve needs to be opened, part of the produced fluid is taken from the sampling valve for sample inspection, and the sampling efficiency is improved. The device is simple and convenient, prevents a worker from sucking toxic gas in produced liquid by mistake, improves the sampling safety, and in addition, in the sampling process, the whole device is in closed circulation, oil leakage is avoided, and environmental pollution is reduced.

The invention relates to the technical field of petroleum coking, and discloses a continuous coking device which comprises a frame, a coke tower is fixedly installed in the frame, the output end of an air cylinder is controlled to stretch upwards and push a top plate upwards, then a clamping plate does not press a flange plate, and then a driving motor drives a driving gear to rotate; a driving gear drives an auxiliary gear and a sleeve to rotate, then a side plate, a sliding rod, a top plate, a clamping plate and an air cylinder are controlled to rotate by 90 degrees, and in the process, a flange plate and a sealing cover cannot be locked; then, the sealing cover is pushed by the pushing spring to move downwards along the axis of the driving shaft, and in the process, the flange plate and the sealing cover are not attached any more; and then the servo motor is driven to drive the driving shaft to rotate by 180 degrees, the sealing cover can be completely staggered from the flange plate, automatic opening of the sealing cover is achieved in the process, manual rotating opening is not needed, and the operation efficiency is improved.

This utility model relates to the field of electronic scales, and in particular to an electronic scale for accurately weighing Western medicine granules. It includes an electronic scale body, a rubber pad on the top of the body, a material tray fixedly mounted on the top of the rubber pad, a discharge pipe fixedly mounted on the bottom of the material tray, a sealing cap threaded onto the external thread of the discharge pipe, and a collecting ring for limiting the movement of the granules fixedly mounted on the inner bottom of the sealing cap. Through the designed granule collecting component, utilizing the inclined and smooth inner wall of the material tray, the spilled Western medicine granules are collected and rolled to the central discharge port. Furthermore, the collecting ring on the inclined inner surface of the top surface effectively limits the collection of the granules. During collection, the collecting ring can be removed simply by disassembling the sealing cap. The small collecting ring provides greater stability during tilting, preventing spillage and ensuring stable collection of Western medicine granules, thus avoiding waste.

The invention provides a waterproof paper pulp molding material as well as a preparation method and application thereof, and the waterproof paper pulp molding material comprises bamboo-wood mixed pulp, hydrophobic modified chitosan, hydrophobic modified cyclodextrin, a sizing agent and a retention aid. Hydrophobic modified chitosan and hydrophobic modified cyclodextrin are added into the paper pulp molding material, hydroxyl and amino on the surface of chitosan are subjected to hydrophobic modification through short-carbon-chain heptafluorobutyric acid and AKD, and hydroxyl on the surface of cyclodextrin is subjected to hydrophobic modification through AKD; hydrophilic groups on the surfaces of chitosan and cyclodextrin are modified, and meanwhile, the synergistic effect of chitosan and cyclodextrin is utilized, so that the finally obtained paper pulp molding material has good waterproof performance, Cobb60 is smaller than 8 g / m < 2 >, the static water contact angle is larger than 125 degrees, and after standing in hot water for 30 min, the back face of a sample is free of negative permeation, leakage and deformation; the application of the paper pulp molding material in the field of waterproof packaging is greatly expanded.

The utility model discloses a pipeline filtering device, which relates to the technical field of filtering devices, and comprises a filtering barrel, a filtering sieve plate and a back flushing mechanism, the filtering sieve plate is arranged in the filtering barrel, the filtering barrel is divided into a feeding cavity and a discharging cavity by the filtering sieve plate, a feeding pipe is arranged on the feeding cavity, a discharging pipe is arranged on the discharging cavity, and the back flushing mechanism is arranged on the discharging pipe. End covers are densely arranged on the filtering barrel, and back flushing mechanisms are arranged on the filtering barrel, are positioned on the two sides of the filtering sieve plate and can be used for dispersing foreign matters blocked on the filtering sieve plate. Feed liquid containing foreign matters enters from the feeding pipe and is screened and filtered by the filtering sieve plate, the foreign matters are left in the feeding cavity, the clean feed liquid is discharged from the discharging pipe, and when the filtering sieve plate is blocked, dredging can be performed through the back flushing mechanism, so that filter residues such as the foreign matters in the feeding cavity can be conveniently cleaned subsequently, and liquid leakage is avoided in the filter residue cleaning process; operation is convenient and reliable, environmental protection is achieved, and the pipeline filtering effect is improved.