54results about How to "Achieve clogging" patented technology

The invention discloses steelmaking flue gas recovery and waste heat utilization equipment and a use method, and relates to the technical field of flue gas waste heat recovery. Dust in the steelmaking flue gas can be filtered through the filter cartridge before the flue gas enters the heat exchange mechanism, and then the clean flue gas is conveyed into the heat exchange mechanism, so that the inner wall of the heat exchange barrel can be kept in a clean state all the time, the dust in the steelmaking flue gas is prevented from being attached to the inner wall of the heat exchange barrel, heat transfer is prevented from being hindered, and the service life of the steelmaking flue gas is prolonged. The smoke dust scraping assembly can scrape off smoke dust attached to the inner wall of the filter cartridge, the self-cleaning effect can be achieved while the heat of the steelmaking smoke gas is recycled, and therefore the good filtering effect of the filter cartridge is always kept, and the scraped-off smoke dust can be collected in a centralized mode under pushing of an auger. When high-temperature flue gas passes through the heat exchange assemblies, the heat exchange assemblies can rotate around the axes of the heat exchange assemblies, so that surrounding clear water is disturbed, clear water at different positions is stirred and mixed, and water temperature areas at different positions are consistent.

The utility model discloses a plastic wood product production system device which comprises a main material storage and conveying area, an auxiliary material feeding and weighing area and at least one mixed material conveying, extruding and feeding area. A CaCO3 main material storage and conveying unit, a CaCO3 transition unit, two groups of PVC main material storage and conveying units and a wood powder main material storage and conveying unit are arranged in the main material storage and conveying area; a group of auxiliary material pouring bin dedusting and weighing units are arranged in the auxiliary material feeding and weighing area; a mixing unit, a mixture conveying unit and a mixture storage and extrusion feeding unit are arranged in the mixture conveying, extruding and feeding area. The device has the advantages of being efficient in operation, high in weighing precision, good in mixing effect, remarkable in energy conservation, environmentally friendly, high in automation degree and the like.

The invention discloses a glass wafer processing device and a use method thereof.The glass wafer processing device comprises a grinding box, a grinding mechanism, a supporting mechanism and a storage fixing assembly; a lifting supporting assembly is installed on one side of the grinding box. The grinding mechanism comprises a driving grinding motor, a fixed transmission shaft is installed on the driving grinding motor, a grinding disc is rotationally connected to the fixed transmission shaft, a fixed connecting column is fixed to the grinding disc, and the fixed transmission shaft is in threaded connection with the fixed connecting column; the supporting mechanism comprises a rotating boss, a glass wafer body is arranged on the rotating boss, a driving arc rod is fixed to one side of the rotating boss, and the other end of the driving arc rod is fixedly connected with an anti-blocking scraper. Through the arrangement of corresponding mechanisms, particles generated during grinding of the glass wafer can be washed away in time and are not prone to being mixed into grinding liquid, so that the flatness and precision of the glass wafer are not prone to being affected, the probability of defective products is reduced, and loss is reduced for a user.

The invention relates to the technical field of cable bridge injection molding, and discloses a cable bridge injection molding device and a using method thereof.The cable bridge injection molding device comprises a base, an air pressure box is fixedly connected to the top of the base, a fixing frame is fixedly connected to the outer wall of the air pressure box, and after an internal mold is cooled, an electric telescopic rod generates contraction force to force a lower mold to move downwards; high-pressure gas is formed on the inner wall of the air pressure box, the piston block is forced to slide upwards along the inner wall of the plane exhaust port, at the moment, the high-pressure gas in the gas outlet groove enters the second slope exhaust port, and the piston block drives the sliding baffle to move towards the two ends along the inner wall of the sliding groove through the push rod; high-pressure gas on the inner wall of the second bevel exhaust port directly acts on the bottom of a finished product, upward thrust is applied to the bottom of the finished product, more high-pressure gas enters the top of the lower die, and the stress area of the bottom of the product is continuously enlarged along with increase of the separation area. And the outer wall of the product is effectively prevented from cracking due to the enlarged stress area.

The utility model provides an intelligent temperature control agricultural planting facility which comprises a greenhouse, an intelligent temperature control module is arranged on a ceiling of the greenhouse, a heat preservation and insulation plate is arranged on the side wall of the greenhouse, the intelligent temperature control module comprises a temperature adjusting assembly and a ventilation assembly, and the temperature adjusting assembly comprises a plurality of through grooves formed in the top of the greenhouse. A movable platform is arranged on the outer side of the through groove, a light shielding plate is arranged on the movable platform, a plurality of incandescent lamps independently controlling on and off are arranged on the lower portion of the light shielding plate and the inner side wall of the greenhouse, and a controller is arranged on the outer side wall of the greenhouse. The intelligent temperature control module can be controlled through the controller to achieve intelligent temperature control work on the temperature in the greenhouse, it is guaranteed that the temperature in the greenhouse is always kept at the temperature suitable for growth of plants to be planted, air and moisture in the greenhouse are pumped out through the ventilation and air exchange assembly, the humidity in the greenhouse is kept appropriate, and the temperature in the greenhouse is kept constant. The system is more intelligent and convenient, and greatly improves the growth efficiency and effect of to-be-planted plants.

The utility model discloses a construction waste treatment device, which relates to the technical field of construction waste treatment, and comprises a box body, a magnetic component is fixedly mounted at the top of the box body, an overhaul back plate is arranged on the outer side of the box body, a sorting component is fixedly mounted in the box body, and a crushing component is fixedly mounted in the box body. A first discharging groove is formed in the bottom of the box body, and a second discharging groove is formed in the bottom of the box body. According to the construction waste treatment device, through the arrangement of the sorting assembly, when materials fall to the position above a rotating plate, small objects or gravel and the like can be directly discharged through screening holes, secondary smashing is avoided, large objects can be vibrated by driving the rotating plate through a screening motor to be matched with an upper spring and a rotating shaft, and the screening efficiency is improved. And the conveying motor can drive the conveying belt to work, so that workers can place the materials above the conveying belt, automatic feeding can be achieved, and the workload of the workers is reduced.

The invention relates to the technical field of metallurgical equipment, and discloses a continuous casting machine edge secondary cooling nozzle self-adaptive control device which comprises two spraying devices, each spraying device comprises two vertical guide columns, each guide column is sleeved with a sleeve, the sleeves are controlled to ascend and descend through a lifting system, a mounting block is connected between the two sleeves, and the mounting blocks are connected with the guide columns through a lifting system. A movable block is arranged in the mounting block, a nozzle facing the casting blank is arranged on the movable block, a connecting rod is arranged on the other face of the movable block, the guide rods are sleeved with the two ends of the connecting rod through sleeves, and the movable block reciprocates through a horizontal telescopic system arranged on the mounting block. The invention further discloses a control method of the self-adaptive control device for the edge secondary cooling nozzles of the continuous casting machine. According to the self-adaptive control device and method for the secondary cooling nozzle on the edge of the continuous casting machine, self-adaptive control over the distance and angle of the nozzle under the condition that the width of a casting blank changes is achieved, the good narrow face cooling effect is guaranteed, and transverse and longitudinal cracks are reduced.

The utility model belongs to the technical field of alkali liquor circulation, and discloses an alkali liquor circulation device which comprises a bottom plate, an alkali liquor box and a bearing platform are fixedly mounted at the top of the bottom plate, a filter cylinder is fixedly mounted at the top of the bearing platform, an obliquely-arranged filter plate is clamped to the top of the filter cylinder, and a water pump is fixedly mounted on the left side of the top of the alkali liquor box. A high-level box is fixedly installed above the left side of the filter cylinder, a second motor is started to drive a rotary disc to rotate, then a protruding rod is driven to move in the circumferential direction, at the moment, the protruding rod can drive a cross-shaped rod to continuously move left and right back and forth, and then a piston is driven to move left and right back and forth in a piston cylinder; when the piston moves leftwards, external air enters the piston cylinder to be supplemented, when the piston moves rightwards to cross the liquid hole, positive pressure is formed in the piston cylinder, compressed air is sprayed out of the filter holes in the filter plate in the reverse direction through the filter cylinder, and therefore the interiors of the filter holes in the filter plate are dredged.

The utility model belongs to the field of valve airtightness detection, and particularly relates to valve airtightness detection equipment, which comprises an operation table, a display assembly is arranged on one side of the operation table, a pre-positioning mechanism is arranged at the top of the operation table, the pre-positioning mechanism comprises a support table, the support table is fixedly connected to the top of the operation table, and the display assembly is arranged on the other side of the operation table. The inner wall of the supporting table is rotationally connected with a rotating rod. By arranging the pre-positioning mechanism, valves with different pipe diameters are supported from the inner sides, transverse supporting force is provided for the valves, and the valves are prevented from displacement during inflation, so that pre-positioning of the valves is achieved, the butt joint accuracy of valve ports and inflation ports is ensured, interference to air pressure is avoided, the accuracy of detection results is ensured, and the detection efficiency is improved. And a sealing plate and a sealing gasket are arranged, so that the third port of the three-way valve is in a sealing state when making contact with the supporting table, positioning of the three-way valve is achieved, blocking of the third port of the three-way valve is achieved, and the utilization rate of resources is increased.

The invention relates to the technical field of medical instruments, in particular to a drainage tube convenient to dredge, which comprises a catheter mechanism, a drainage catheter, an in-body catheter arranged at one end of the drainage catheter, and a joint tube and a dredging mechanism which are arranged at one end of the drainage catheter far away from the in-body catheter, the device comprises a shell movably installed on the drainage catheter, and further comprises a supporting assembly arranged in the shell and a dredging assembly rotationally installed on the supporting assembly, and the dredging assembly comprises a sleeve shell part arranged outside the drainage catheter and pressing roller parts rotationally installed in an inner cavity of the sleeve shell part in an annular array; by means of the drainage tube dredging device, the problems that when the drainage tube is blocked, dredging is not easy due to the fact that manual kneading dredging force is small, the drainage tube is easy to seal due to the fact that the force is too large, and therefore a patient is injured are solved.

The invention discloses an underwater video robot detection device and method, and relates to the technical field of diving equipment manufacturing. The underwater video robot detection device comprises an underwater robot, the outer wall of the underwater robot is movably connected with detection equipment, the bottom of the underwater robot is fixedly connected with a base, the bottom of the underwater robot is fixedly connected with a driving mechanism, and the inner wall of the underwater robot is fixedly connected with a guide fan. According to the underwater video robot detection device and method, when water flow passes through the transverse pipe, the Bernoulli principle is combined, irritant medicine powder in the storage bag is squeezed into the transverse pipe under squeezing of pressure intensity, the medicine powder is driven to move by means of pressure intensity difference generated by flowing of the water flow, fish and shrimps are repelled, and the effect of preventing and treating the fish and shrimps is achieved. The influence of fishes and shrimps on the device is avoided, and the other port of the transverse pipe is arranged at the position of the underwater robot, so that the medicine powder mixed water flow can flow through the underwater robot.

The utility model relates to the technical field of air pump control, and discloses an air pump control circuit for a gas detector. The technical problems that in the prior art, an air pump pressure detection method is difficult to achieve accurate control over an air pump, precision is low, and stability is poor are solved. The device comprises an air pressure sensor for detecting the pressure of an air inlet pipeline of an air pump, a pressure signal output end of the air pressure sensor is connected with a main control chip, a control signal output end of the main control chip is connected with the air pump, and a power supply line of the air pump is connected with a boosting module and a current sampling operation module. The output end of the current sampling operation module is connected with the main control chip. According to the invention, PWM pulse width modulation is used to modulate the power supply of the air pump, so that the power supply voltage of the air pump is adjustable, and the gas collection flow is adjustable; the air pressure sensor is used for detecting and judging air path pressure to prevent air path blockage, and the current sampling operation module is used for detecting and judging air pump power supply current to prevent overhigh locked-rotor current of an air pump motor.

The present invention belongs to the field of agricultural machinery, and in particular relates to a sand prevention and control vegetation block forming device, comprising a hydraulic support body, a sliding platform and a feeding frame. Support gas rods are fixedly installed on both sides of the hydraulic support body, and both sides of the sliding platform are fixedly connected to the telescopic ends of the support gas rods. The feeding frame is slidably connected to one side of the upper surface of the sliding platform, and the upper and lower ends of the feeding frame are both open. A discharge structure for guiding and releasing soil is arranged in the feeding frame; a reverse cleaning structure is arranged on the side of the feeding frame close to the shaping mold. In the present invention, soil scattered on the sliding platform and the shaping mold can be cleaned by the arranged bristles, and the cleaned soil is discharged into a soil collecting bag through a soil withdrawal trough for collection, thereby avoiding soil scattering on the ground during work, reducing pollution to the working environment, and reducing the difficulty of cleaning. The soil collecting bag also contributes to the recycling of soil.

This invention discloses a catalytic reactive distillation unit, apparatus, and method. The catalytic reactive distillation unit includes: a reaction mass transfer channel, the upper end of which receives low-temperature liquid-phase reactants flowing downwards, and the lower end of which receives high-temperature gas phase flowing upwards; the reaction mass transfer channel contains a catalyst layer and a packing layer, with the catalyst layer positioned above the packing layer, and a first space between them; and a rising gas bypass, located outside the reaction mass transfer channel and connected to the first space. The liquid-phase products after the catalytic reaction merge with the high-temperature gas phase in the packing layer and undergo gas-liquid mass transfer. The rising gas phase after mass transfer carries the light components from the liquid-phase products into the rising gas bypass, completing mass transfer separation. This invention, through the setting of the rising gas bypass, not only increases the gas phase flow rate and effectively reduces the pressure drop within the reaction mass transfer channel, but also effectively solves the space occupation problem of the equipment. This invention can clean the blockage of the catalyst filter without additional power and can realize online replacement of the catalyst and / or packing.

The application discloses a kind of digital intelligence powder type free matching variable viscosity fracturing fluid skid-mounted equipment and control method thereof, belong to oil and gas field development technical field.The equipment includes stirring mechanism, feeding mechanism, water feeding mechanism and discharging mechanism, and is centrally controlled by control box.Feeding mechanism uses first screw conveyor to deliver solid material to stirring tank body;Water feeding mechanism supplies water to tank by water feeding pump and water outlet pipe with electromagnetic valve, and water quantity is monitored by water inlet flow sensor;Discharging mechanism outputs mixed liquid by discharging pump, and viscosity sensor detects fracturing fluid viscosity in real time.Control box connects each sensor and executing component, realizes automatic adjustment and closed-loop control of material proportioning by collecting flow and viscosity data.The application realizes accurate and automatic preparation of fracturing fluid, effectively solves the problem of inaccurate and poor stability of traditional manual proportioning, and significantly improves the quality of liquid preparation and operation efficiency.

The utility model relates to a steel slag treatment and waste heat recovery system. The system comprises a smoke dust isolation hood; the granulation equipment group is positioned in the smoke dust isolation hood and is used for crushing and granulating the molten steel slag to obtain solid high-temperature steel slag; the circular cooler is used for carrying out heat exchange and cooling on the solid high-temperature steel slag to obtain low-temperature steel slag; the waste heat boiler is connected to the smoke dust isolation hood and the circular cooler through a smoke pipeline set and used for receiving the high-temperature smoke generated in the smoke dust isolation hood and the high-temperature smoke generated in the circular cooler through the smoke pipeline set, saturated steam and low-temperature smoke are obtained through heat exchange, and the low-temperature smoke is conveyed into the smoke dust isolation hood through the smoke pipeline set; and the first multi-pipe dust remover is connected between the circular cooler and the waste heat boiler through a flue gas pipeline group and is used for removing dust from the passing high-temperature flue gas. According to the waste heat recycling device, the waste heat of the steel slag is recycled, and the pollution of flue gas to the environment is reduced.

The invention provides a high-temperature powder pneumatic steady-flow conveying device which comprises a temporary storage tank used for storing powder, and at least one high-pressure hood is arranged on an inner cavity of the temporary storage tank; the first material conveying pipe is communicated with a discharging opening of the temporary storage tank, one end of the first material conveying pipe is connected with compressed gas, and at least one set of inclined plates used for changing the flow speed and the flow direction of the powder materials so as to prevent the powder materials from collapsing or blocking are arranged in an inner cavity of the first material conveying pipe. The invention further provides a high-temperature powder pneumatic steady-flow conveying system which comprises the high-temperature powder pneumatic steady-flow conveying device and further comprises a second material conveying pipe communicated with the first material conveying pipe. One end of the second material conveying pipe is connected with an air inlet valve, and the other end of the second material conveying pipe is connected with a cyclone separator; and the cyclone separator is also connected with a negative pressure fan. The powder conveying device can effectively prevent powder materials from collapsing and being blocked in the conveying process, the production and maintenance cost is reduced, and the production efficiency and economic benefits are improved.

The invention provides a blast hole blocking method, a blast hole blocking device and a blast hole blocking system.The blast hole blocking method comprises the steps that blocking parameter information is obtained, and the blocking parameter information comprises structural parameters of a blast hole and the density rho of a blocking material; according to the plugging parameter information, the mass delta m of a plugging material needed for plugging the blast hole is calculated; and the feeding mechanism is controlled to fill the blast hole with the blocking material, the mass m1 of the blocking material actually filled into the blast hole by the feeding mechanism is controlled, and the difference value between the m1 and the delta m is made to be within the preset range. According to the blast hole blocking method, the safety, efficiency and accuracy of blast hole blocking operation can be improved.

The utility model provides a premix mixing machine feeding device which comprises a feeding machine box, the feeding machine box is fixedly connected with a premix through installation stand columns fixedly installed at the four corners of the lower portion of the feeding machine box, and a discharging pipe opening formed in the lower portion of the feeding machine box and a feeding pipe opening of the premix are installed together through flange connection. A driving motor is mounted on a grinding type feeding mechanism mounted in the feeding machine box, and a material storage cavity, a transition cavity and a grinding cavity which are communicated with one another are formed in the feeding machine box; according to the utility model, the integration of material grinding and conveying is realized through the grinding type feeding mechanism, the vertical series cavities enhance grinding by virtue of gravity and a conical structure, the material pushing blocking plate is matched with the feeding hole group to accurately control materials, the feeding efficiency is improved by virtue of cooperation of the spiral blades and the lines, the process is simplified, and the cost is reduced.

The invention discloses a preparation process of bubble mixed type medium-expansion gel foam. Firstly, gas is injected into solutions of a component A system and a component B system to generate foams, molecules of a cross-linking agent and a thickening agent are promoted to be distributed in a foam liquid film, then the two foams are mixed, the cross-linking agent and the thickening agent in the liquid film are promoted to be subjected to a cross-linking reaction, and medium-expansion gel foams are generated in a gas-liquid-bubble sequential mixing mode. According to the method, the interfacial area of the crosslinking reaction of the crosslinking agent and the thickening agent is increased through bubble mixing, the crosslinking reaction activity is improved by more than 3 times, the dosage of the crosslinking agent is reduced by more than 50%, the problems of uneven liquid-liquid and gas-liquid mixing and the like caused by relatively high viscosity of a gel foam system solution are avoided, and the formed gel foam is continuous in jet flow and high in stability. The produced gel foam has better performance, the maximum foaming multiple exceeds 20 times, and the 25% drainage time is longer than 48 hours.

The utility model discloses a three-phase separator for petroleum and natural gas treatment, and particularly relates to the field of three-phase separators, which comprises a separator body and is characterized in that a feeding pipe is fixedly arranged on one side of the separator body; a filter plate switching device capable of conveniently replacing a filter plate is fixedly arranged at the input end of the feeding pipe and is used for realizing the work of replacing the filter plate when the three-phase separator runs, so that the overall separation efficiency is improved, convenient replacement can be realized, and redundant operation is reduced; a fixing frame is fixedly arranged on the outer surface of the separator body, an air outlet pipe is fixedly arranged at the upper end of the separator body, and a drainage pipe and an oil outlet pipe are fixedly arranged at the lower end of the separator body and fixedly penetrate through the lower end of the fixing frame. According to the three-phase separator, the filter plate switching device is arranged, so that the filter plate can be replaced when the three-phase separator runs, the overall separation efficiency is improved, the filter plate can be replaced conveniently, and redundant operation is reduced.

The utility model relates to the field of gastrointestinal catheters, and discloses a medical gastrointestinal catheter which comprises a first catheter body, a monitoring assembly is arranged at the bottom end of the first catheter body, a pipeline is arranged at the bottom end of the monitoring assembly, a second catheter body is fixedly connected to the bottom end of the pipeline, a fixing assembly is arranged on the outer wall of the second catheter body, and the monitoring assembly comprises an upper cover. A round sleeve is fixedly connected to the bottom end of the upper cover, a lower cover is fixedly connected to the bottom end of the round sleeve, a connecting block is slidably connected to the inner wall of the round sleeve, a round block is fixedly connected to the left side of the connecting block, a water flowing hole is formed in the middle of the round block, and the water flowing hole is conical. The top end, close to the connecting block, of the inner wall of the round sleeve is fixedly connected with a connecting rod. According to the utility model, through the arrangement of the connecting block and the circular plate, liquid flows downwards through the periphery of the circular plate and flows downwards through the water flowing holes in the circular plate, and when the liquid flows backwards, the liquid is prevented from flowing backwards due to the conical arrangement of the water flowing holes.

The invention discloses a UHMWPE high-strength polyethylene pipe and a preparation method thereof.One side of a machine tool is detachably connected with a smearing frame, the interior of the smearing frame is detachably connected with a blocking mechanism, the smearing frame is detachably connected with a through pipe, the input end of the through pipe is connected into a top pipe, the top pipe is inserted into a storage bin, and the storage bin is detachably connected with the through pipe. One end of the storage bin is detachably connected to a second air cylinder, the output end of the second air cylinder is detachably connected with a first electric roller, and the first electric roller is in lap joint with the pipe body. A prepared ultra-high molecular weight polyethylene pipe is placed on a moving frame, a second air cylinder moves downwards when a pipe body moves to the position of a first electric roller, the second air cylinder moves downwards when the first electric roller drives the pipe body to move, and high-toughness polyurethane is smeared on the outer surface of the pipe body when the pipe body passes through a smearing frame; and therefore, a protective layer is formed after the high-toughness polyurethane is cooled, and the strength of the pipe main body is improved.

The invention provides a photovoltaic ring main unit with a safety performance monitoring mechanism, and belongs to the technical field of ring main units, the photovoltaic ring main unit comprises a shell, safety performance detectors are arranged on the outer walls of the two sides of the shell, a fixing plate is fixedly installed on the inner wall of the shell, a heat dissipation assembly is arranged on the outer wall of the fixing plate, and the safety performance detectors are arranged on the outer walls of the heat dissipation assembly. A cleaning assembly and a dredging assembly are arranged on the inner wall of the shell, the cleaning assembly comprises a motor, a transmission rod and a supporting rod, the motor is fixedly installed on the outer wall of one side of the shell, a power rod is fixedly installed at one end of an output shaft of the motor, and a first driving bevel gear is fixedly installed on the outer wall of one end of the power rod; according to the invention, through the arrangement of the cleaning assembly, dust attached to the probe of the safety performance detector is effectively cleaned, the dust is prevented from being blocked by foreign matters, the safety performance monitoring effect in the ring main unit is greatly improved, and the use effect is good.

The utility model discloses a crusher with an outlet anti-blocking function, which relates to the technical field of crushers, and comprises a machine body, a discharge bin, a motor, a first polish rod and a gear set, the bottom end of the machine body is welded with the communicated discharge bin, and the rear end of the machine body is provided with the motor; the rear end of the machine body is rotationally connected with first polished rods which are symmetrically arranged and extend into the machine body through bearings, one first polished rod is connected with the output end of a motor, and the interior of the discharging bin is rotationally connected with a second polished rod through a bearing. According to the pulverizer with the outlet anti-blocking function, the dispersing mechanism is arranged, a first polished rod is driven to rotate through a motor, so that a second polished rod is driven to rotate together through a belt pulley set, then two push blocks are driven to annularly rotate through a supporting cylinder, pulverized raw materials are scattered through the push blocks, and therefore the pulverizer cannot be blocked; the problem that an existing pulverizer is prone to being blocked when many raw materials exist is solved.

The utility model belongs to the technical field of bag-type dust removers, and particularly relates to an anti-blocking bag-type dust remover which comprises a fixed bracket, a dust removal box is fixedly installed on the upper portion of the fixing support, an exhaust port is formed in the top of the dust removal box, a mounting plate is arranged on the upper portion of the interior of the dust removal box and fixedly installed in the dust removal box, a plurality of mounting holes are formed in the mounting plate in an array mode, sliding holes are formed in the two ends of the mounting plate, and mounting supports are fixedly installed in the mounting holes. Sliding rods are slidably mounted in the sliding holes, the outer side of the mounting support is sleeved with a dust removal cloth bag, a carding plate is arranged below the mounting plate, the lower ends of the sliding rods penetrate through the mounting plate and are fixedly connected to the two sides of the upper portion of the carding plate, an air inlet is formed in one side of the lower end of the dust removal box, and an air inlet pipe is fixedly mounted on the air inlet; a collection hopper is fixedly mounted at the bottom of the dust removal box, and a discharge pipe is fixedly connected to the bottom of the collection hopper; the carding plate slides to clean the outer surface of the dust collection bag, so that the dust collection efficiency is prevented from being influenced by blockage of filter holes of the bag.

The present invention provides a multifunctional papillary sphincterotomy knife. The first tube section of the present invention is generally conical, and the front end is spherical. The first tube section is provided with a guide wire outlet, and the third tube section is provided with a guide wire inlet. The sphincterotomy knife includes a first electrosurgical wire, a second electrosurgical wire, a connecting rod, a wire length adjustment mechanism, and a wire angle adjustment mechanism. The head ends of the first electrosurgical wire and the second electrosurgical wire are both tied to the outer wall of the head end of the second tube section. A connecting rod is arranged between the two electrosurgical wires. The wire length adjustment mechanism is connected to the tail ends of the first electrosurgical wire and the second electrosurgical wire, and the wire angle adjustment mechanism is connected to one of the electrosurgical wires. The present invention is easy to enter the common channel of the duodenal papilla and does not damage the papillary mucosa. By adjusting the angles of the two wires, the two sphincterotomy knife guide wires can achieve accurate incision of the papilla in the 9-11 o'clock direction after the current is turned on, avoiding pancreatic duct damage and reducing the incidence of postoperative pancreatitis.

The present invention belongs to the field of agricultural machinery, and in particular relates to an integrated production line for packaging vegetation blocks for preventing and controlling sand, comprising a first conveyor line, a shaping mold, a bearing platform, a third conveyor line, a soil covering device, a seed placing device, a punching device, a second conveyor line, a mechanical grabbing arm, a fourth conveyor line, a cup dropping machine, a box sealing device and a stacking mechanical arm, wherein the soil covering device comprises a supporting platform and a feeding frame, a seventh limiting guide groove is provided on a side of the supporting platform away from the feeding frame, and a reverse cleaning structure is provided on a side of the feeding frame close to the seventh limiting guide groove, when the feeding frame moves in a direction away from the shaping mold, soil scattered on the limiting platform and an upper mounting plate is cleaned by brush bristles, and the cleaned soil is discharged into a soil collecting bag through a soil withdrawal trough for collection, thereby avoiding soil scattering on the first conveyor line during work, reducing pollution to the first conveyor line and the working environment, and the soil collecting bag also helps to recover soil.

The invention discloses an upper shell protection device of an air cleanliness detector, and relates to the technical field of air quality detectors. The upper shell protection device of the air cleanliness detector comprises a shell assembly, the shell assembly comprises a bottom shell, the bottom of the bottom shell is communicated with a round hole net, the top of the bottom shell is fixedly connected with a top shell, the front face of the top shell is fixedly connected with a sliding groove, and the interior of the sliding groove is fixedly connected with a rectangular groove; the sliding groove is slidably connected with a probe protecting cover through a rectangular groove, a circuit protecting cover is fixedly connected to the interior of the bottom shell, a dustproof ventilation assembly is fixedly connected to the interior of the bottom shell, and an active dust removal assembly is fixedly connected to the bottom of the inner wall of the bottom shell. According to the upper shell protection device for the air cleanliness detector, the dustproof ventilation mechanism and the active dust removal mechanism are arranged and matched, external air is promoted to flow into the device, the probability that dust adheres to block an air duct is reduced, and the heat dissipation performance and reliability of the device are improved.

The utility model relates to the technical field of reaction kettles, and discloses a polyaluminum chloride reaction kettle which comprises a reaction kettle tank body, a first mounting plate is fixedly mounted at the top end of the reaction kettle tank body, a second mounting plate is arranged on the upper side of the first mounting plate, and a stirring motor and a telescopic cylinder are fixedly mounted on the surface of the second mounting plate respectively. The telescopic end of the telescopic air cylinder is fixedly connected with the first mounting plate, a guide sleeve is fixedly mounted in the first mounting plate, a stirring shaft is slidably inserted in the guide sleeve, and a dredging plate is fixedly mounted at the bottom of the stirring shaft. According to the reaction kettle, the telescopic air cylinder is arranged at the top of the reaction kettle tank body, the stirring motor is adjusted to move up and down through the telescopic air cylinder, the stirring arm moves up and down while rotating, the stirring efficiency is improved, and in the stirring process, the dredging plate can be inserted into the discharging pipe to clean blockages, so that the blockage of the discharging pipe is automatically dredged; safe and stable operation of the reaction kettle is ensured, and faults are reduced.