13results about How to "Prevent bringing in" patented technology

The utility model belongs to the technical field of plasma rotating electrode powder manufacturing equipment, and relates to a vacuum dynamic sealing structure of a plasma gun for powder manufacturing, which comprises an external powder blocking module and a dynamic sealing module, the external powder blocking module consists of a first powder blocking plate, a powder blocking ring and an insulating powder blocking plate, the first powder blocking plate is fixed at the top of a plasma gun body to form an arc-shaped shielding surface, and the dynamic sealing module is fixed at the top of the plasma gun body. The powder retaining ring coaxially sleeves the positive electrode of the plasma gun body and forms an annular gap type powder blocking structure with the insulating powder retaining plate; the dynamic sealing module is sequentially provided with a dynamic sealing installation metal cylinder, an insulating cylinder and a sealing assembly from outside to inside in the radial direction of the plasma gun body, the insulating cylinder and the dynamic sealing installation metal cylinder form a step-shaped sealing structure, and vacuum sealing and electrical isolation are achieved between the dynamic sealing module and the external powder blocking module through bakelite and an O-shaped sealing ring. The vacuum dynamic sealing structure provided by the utility model has the advantages of powder isolation, reliable sealing, no burning loss short circuit and no need of vacuum grease auxiliary sealing lubrication.

The invention discloses an air conditioning device and refrigeration equipment with the air conditioning device, and the air conditioning device comprises an air conditioning module which is used for preparing oxygen conditioning gas and is provided with a gas collecting cavity; the water tank is provided with a filtering area; the oxygen adjusting gas path is communicated with the gas collecting cavity and the water tank, a tail end pipe of the oxygen adjusting gas path is inserted below the liquid level of the filtering area, and the oxygen adjusting gas path is provided with a suck-back buffering cavity. According to the controlled atmosphere device and the refrigeration equipment with the controlled atmosphere device, the controlled atmosphere gas can be washed with water to wash away electrolyte particles carried in the controlled atmosphere gas, and therefore the situation that food materials are polluted due to the fact that the electrolyte particles are brought into the chamber by the controlled atmosphere gas can be prevented; when the air adjusting module stops working, the air pressure in the air adjusting module can be reduced along with the reduction of the temperature, and the problem that the solution in the water box is sucked back into the air adjusting module due to the reduction of the air pressure in the air adjusting module can be prevented by the suck-back buffer cavity in the oxygen adjusting air path.

The utility model relates to the field of range hoods, and discloses an air pipe for a range hood, which comprises an air pipe and a mounting flange, one end of the air pipe connected with the range hood is connected through the mounting flange, one end of the air pipe away from the range hood is fixedly connected with an external thread mounting pipe, and the cylindrical surface of the external thread mounting pipe is in threaded connection with two groups of symmetrical fixing structures. The end, deviating from the air pipe, of the external thread mounting pipe is connected with an air filling prevention structure through a mounting flange, when an air pipe of an existing range hood is connected with the outside, the air pipe is clamped in a hole of a window or a wall, the clamping mode is extremely unstable, and in addition, the end, making contact with the outside, of the air pipe cannot be blocked when the outside has strong wind weather. Or in some special air pressure environments, air can be reversely injected into the air pipe from the end of the air pipe, the air pipe fixing structure aims at increasing connection between the fixing structure and the inner side and the outer side of a window or a wall body, an air injection prevention structure is additionally arranged at the external exhaust end of the air pipe, and air can only be exhausted to the outside from one end of the air pipe.

This application relates to a compact, modular anti-evaporation sphere for reservoirs, comprising a sphere and an outwardly protruding connecting portion integrally connected to the sphere. The sphere includes a sunshade portion on the upper side and a floating portion on the lower side. The connecting portion is a hollow ring with open upper and lower ends. The upper surface of the hollow ring consists of several continuous upwardly protruding arc-shaped convex surfaces, and the lower surface of the hollow ring consists of several continuous downwardly protruding arc-shaped convex surfaces. The lower end of the sunshade portion is integrally connected to the upper end of the connecting portion, and the upper end of the floating portion is integrally connected to the lower end of the connecting portion. Based on existing technology, this application can form a sphere with a connecting portion in a single process of extruding a preform and then blow molding, reducing the number of steps and saving time and cost. This application allows the sphere to slide down naturally under its own weight, making it difficult for the connecting portions to overlap. During sliding, it can press down the connecting portions of adjacent sunshade spheres, creating an outward movement trend and exposing the splicing gaps, achieving the purpose of orderly splicing.

The utility model provides a rotatable arm structure of an amphibious unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. The problems that most of current underwater unmanned aerial vehicles are folding vehicle arms, the urgent to-be-optimized points are that rotating shafts at the connecting points of the vehicle arms and a vehicle body need to rotate, a certain gap exists, complete sealing cannot be achieved by replacing materials and the like, and the water inflow risk is large are solved. A rotatable amphibious unmanned aerial vehicle arm structure comprises an arm rod, a duct body and a sealing ring, the arm rod is fixedly installed on the duct body, a movable ring and a spring seat are fixedly arranged on the arm rod, a spring is arranged on the spring seat, a static ring is installed on the spring, the static ring is pressed on the movable ring by the spring, and the sealing ring is arranged on the duct body. And the sealing rings are arranged between the movable ring and the arm lever and between the static ring and the spring seat. The advantages that the arms are resistant to water immersion, and the waterproofness and precision are enhanced are achieved.

The invention provides an outer cylinder assembly and clothes processing equipment. The outer cylinder assembly comprises an outer cylinder and a condensation air duct, a drying air outlet is formed in the cylinder wall of the outer cylinder, and the condensation air duct is arranged on the rear side of the outer cylinder and comprises an air duct air inlet communicating with the drying air outlet; the condensation air channel integrally extends in the vertical direction, and an upper condensation area and a lower condensation area which are oppositely arranged in the vertical direction are arranged in the condensation air channel. The multiple first flow guide ribs are sequentially arranged at intervals in the extending direction of the condensation air channel. The width of the first flow guide rib located in the upper condensation area is larger than that of the first flow guide rib located in the lower condensation area; the wide ribs of the upper condensation area enhance the flow guiding and disturbing effects, condensate water is promoted to adhere and spread, the heat exchange time of drying airflow and condensate water is prolonged, and the dehumidification effect is improved. The narrow ribs of the lower condensation area avoid unnecessary flow resistance, ensure the stability of the flow of the drying airflow, guide the condensate water to be discharged smoothly and effectively prevent the condensate water from being brought into a subsequent air duct by the airflow.

The utility model relates to the technical field of lubricating oil sampling, in particular to a lubricating oil sampling device for production, which comprises a sampling bin and a sampling head fixedly mounted on one side of the sampling bin; the switching sampling mechanism is used for quickly sampling different samples and is arranged in the sampling bin; wherein the switching sampling mechanism comprises a plurality of sample containers arranged in a sampling bin, a driving assembly is arranged on one side of the sampling bin, and a cleaning assembly is arranged on one side of the sampling head; the driving assembly controls the sampling head to be rapidly switched and connected with the multiple sample containers, lubricating oil samples can be selectively guided into different containers according to needs, mixing of different samples is avoided, in addition, the sampling head is connected with the cleaning assembly, the sampling head can be instantly cleaned when the different sample containers are switched, and the sampling efficiency is improved. Residual lubricating oil or impurities are prevented from being brought into a next sample, the sampling purity is further improved, and cross contamination is avoided.

The application provides a three-phase separator and relates to the technical field of petroleum processing. The three-phase separator comprises a first shell, a second shell and a bubble breaking device; the first shell is accommodated in the second shell, the second shell comprises a feeding port, a discharging port and a gas outlet, both ends of the first shell are open, and the bubble breaking device is arranged at one end of the first shell away from the feeding port; the bubble breaking device comprises a cover body, one end of the cover body is open, a plurality of air holes are arranged in the cover body, the inner wall of the air hole is provided with a thorn, and the open end of the cover body faces the first shell. The three-phase separator provided by the application can sufficiently remove bubbles in fluid, prevent bubbles from bringing catalyst into hydrogenated oil, break large-diameter bubbles, avoid fine catalyst powder from being taken out by gas phase, and influence the stable operation of the device.

The utility model belongs to the technical field of coal mine stress detection, and particularly relates to a mining drill hole stress monitoring device which comprises a cylinder body, and a power mechanism and a detection mechanism are arranged on the cylinder body. Compared with a traditional stress monitoring device in which liquid is injected into a flexible rubber pipe, the mining borehole stress monitoring device is used for pushing the conical block to enable the rubber pipe to expand and be attached to the hole wall during installation, and pressure is no longer transmitted through hydraulic oil after installation is completed; meanwhile, the two sets of strain sensors with the included angle of 90 degrees are arranged on the outer wall of the rubber pipe, the stress in the vertical direction and the stress in the horizontal direction can be detected respectively, and the stability and reliability of the device in long-term use are greatly improved. Compared with a common device which can only measure stress perpendicular to the surface of the sensor, the device can more comprehensively obtain borehole stress information, and more accurate stress data are provided for projects such as coal mining.

The utility model discloses a kind of drying machines for ceramic production, including drying cabinet and the fixed disc for bearing ceramic, the lower end of the fixed disc is engagedly connected with driving disc, and driving disc drives fixed disc to rotate slowly in drying cabinet, the fixed disc is equally angularly provided with connecting groove, and the left and right sides of fixed disc are slidably connected with connecting plate, the bottom of the fixed disc is rotatably provided with ball bearing, while ball bearing is attached to the bottom of the inside of drying cabinet, the rear end of the drying cabinet is fixedly connected with wind cover, and the rear end of wind cover is engagedly installed with dust screen. The drying machine for ceramic production, driving disc drives fixed disc to rotate in drying cabinet, so that ceramic is in full contact with hot air, to achieve more sufficient drying effect, hot air is contacted with the bottom of ceramic through connecting groove, to further improve the uniformity of drying, and fixed disc is removed from drying cabinet by connecting plate, to facilitate ceramic to be taken and placed.

The utility model discloses a cut big and medium -sized casting with wet dust removal device belongs to dust purification field. Including frame main part, antechamber drive double speed reducer, fire -retardant fire -resistant cloth, explosion -proof lighting warning light, walking track and supporting parts, controlling means, dust fog filter, off -wind machine, flue gas exhaust pipe. The water in equipment water tank is promoted to form circulating water curtain with the negative pressure of off -wind machine. The air containing smoke dust is first impacted with water curtain under the action of certain airflow organization, and part of the viscosity material in it is intercepted in water. Then pass through water screen and enter the air -water channel, and the water in the channel produces strong stirring and mixes, and the particulate matter is completely cleaned to water. After a part of water follows airflow organization and enters the gas collecting box, air -water separates, and the treated gas passes through the water baffle and is discharged to the atmosphere through the off -wind machine, and the separated water flows into the overflow tank after gathering in the gas collecting box, and overflows from the overflow tank to the water flooding board to form a water curtain, and the cycle is repeated, and the smoke dust is removed.

This utility model discloses a liftable Class C liquid warehouse cofferdam device, aiming to solve the problem of existing reinforced concrete cofferdams being elevated above the ground, severely affecting the convenience of vehicle transportation within the warehouse. The utility model includes a cofferdam plate and an elastic waterproof membrane. An installation groove is provided on the warehouse floor, and the cofferdam plate is liftable and installable in the groove. The waterproof membrane is connected to both sides of the groove, covering the opening of the groove. When the cofferdam plate is raised above the ground, the waterproof membrane adheres to the upper outer wall of the cofferdam plate. When the cofferdam plate is lowered to be flush with the ground, the waterproof membrane is laid flat on the upper part of the cofferdam plate. This liftable Class C liquid warehouse cofferdam device, as disclosed in this patent application, not only meets the requirements for preventing material leakage but also facilitates vehicle passage during material transportation.

The utility model discloses an air-cooled natural cooling water chiller which is provided with a refrigerant circulation loop and a water circulation loop. According to the refrigerant circulation loop, an outlet of a compressor is connected with an inlet of a condenser, an outlet of the condenser is connected with an inlet of a throttling valve, an outlet of the throttling valve is connected with a coolant channel inlet of an evaporator, and a coolant channel outlet of the evaporator is connected with an inlet of the compressor. According to the water circulation loop, an outlet of a water tank is connected with an inlet of a water pump, an outlet of the water pump is divided into two paths through a three-way pipe, one path is connected with a water channel inlet of an evaporator, and a water channel outlet of the evaporator is a system water outlet; a first outlet of the three-way electric ball valve is connected with a first water return port of the water tank, a second outlet of the three-way electric ball valve is connected with an inlet of the surface air cooler, and an outlet of the surface air cooler is connected with a second water return port of the water tank. By means of the design, the cooling requirements under different environment conditions can be met, and the purposes of saving energy and reducing consumption can be achieved.