1604 results about "Ventilation tube" patented technology

The invention relates to the field of grain depot ventilation management, and discloses an automatic management system for ventilation in intelligent grain depot production, which comprises an environmental parameter monitoring module, a data processing and analysis module, an intelligent ventilation decision module, a ventilation equipment linkage control module and a dynamic feedback optimization module, the environmental parameter monitoring module is used for collecting temperature, humidity and gas concentration data in the bin in real time through the Internet of Things communication unit; the data processing and analyzing module is connected with the environment parameter monitoring module; the intelligent ventilation decision-making module receives the multi-dimensional data atlas, analyzes the temperature gradient, the humidity sensitivity index and the mildew risk value in the atlas through a dynamic classification algorithm, and fuses external meteorological data; the ventilation equipment linkage control module is used for receiving the instruction sequence of the intelligent ventilation decision module; the dynamic feedback optimization module is used for monitoring the efficiency coefficient and the grain pile environment change rate in the ventilation process; the system has the advantages that the ventilation precision and efficiency are improved, and granary environment management is optimized.

The utility model discloses a motor base structure easy to radiate heat, which belongs to the technical field of motors and comprises a junction box base, the junction box base is arranged on a base shell, a plurality of ventilation slot assemblies are arranged on the periphery of the upper portion of the base shell, and a plurality of ventilation pipe assemblies are arranged between every two adjacent ventilation slot assemblies. A plurality of heat dissipation fins are further arranged on the upper portion of the machine base shell, an efficient heat dissipation system is jointly formed through the ventilation groove assembly, the ventilation pipe assembly and the heat dissipation fins, the ventilation groove assembly and the ventilation pipe assembly accelerate air flow in the machine shell, and the heat dissipation fins increase the heat dissipation area. Therefore, heat in the inner cavity of the motor can be dissipated to the outside more quickly, the internal temperature of the motor can be effectively prevented from being too high, the service life of the motor is prolonged, and the working stability is improved.

The invention relates to the technical field of dust concentration measurement, and particularly discloses a dust concentration intelligent detection device and method, the dust concentration intelligent detection device comprises a shell assembly, the shell assembly comprises a main shell, a ventilation pipe is arranged on one side of the main shell, a top shell is arranged above the ventilation pipe, a bottom shell is arranged below the ventilation pipe, and an air blowing assembly is arranged in the ventilation pipe; a rotating assembly is arranged in the main shell, an air blowing assembly is arranged outside the rotating assembly, a dust collection assembly is arranged on one side of the rotating assembly, and a measuring assembly is arranged on the bottom side of the air blowing assembly. And under the reflection of the oblique light source of the measuring assembly, by utilizing the sensitivity of light reflection, a descending minimal variable is converted into a moving huge variable after the light is reflected, so that the magnification observation of the weight is facilitated, and the accuracy of the experiment is improved.

The invention relates to the technical field of laboratory temperature and humidity control. The laboratory temperature and humidity control system comprises a control terminal, a monitoring module, a dynamic prediction analysis module and a partition adjustment module, the monitoring module comprises a temperature sensor arranged on the surface of a wall and equipment, a humidity sensor arranged in a ventilation pipeline, dew point detection units of a fresh air inlet and a return air inlet, a pressure sensor below the ground and a top infrared thermal imaging unit. The dynamic prediction analysis module is used for receiving the equipment calorific value and personnel density information monitored by the monitoring module and outputting a temperature and humidity change trend; the partition adjusting module comprises a temperature control plate array, an air conditioning unit and a humidity adjusting unit, a temperature control plate switches a heat storage / release state through current pulse, and the humidity adjusting unit is used for dehumidification or humidification; the control terminal regulates and controls the partition module according to the prediction result, and intelligent regulation of laboratory temperature and humidity is achieved.

The invention discloses a ventilation structure for a box-type substation and the box-type substation. The ventilation structure comprises a rotating mechanism arranged at the top of the box-type substation and a flat ventilation pipe in a horizontal state. A venturi air duct is arranged in the flat ventilation pipe, and a negative pressure hole extending upwards is formed in the top wall of the throat portion of the venturi air duct and communicated with the interior of the box-type substation through an air pipe. The ventilation structure can automatically rotate to one end windward under the action of wind power. The negative pressure hole is formed in the top wall, and gravity is effectively utilized for dust prevention; the inclined arrangement further strengthens the dustproof effect. The air pipe penetrates through the rotating mechanism, it is ensured that the ventilation pipe and the air pipe move as a whole, and automatic windward is not affected. Efficient passive heat dissipation and excellent dust prevention of the box-type transformer substation are achieved, the box-type transformer substation is particularly suitable for dusty or sand-dust environments, the equipment reliability is improved, and the maintenance requirement is lowered.

The invention provides a self-adaptive throttling and ventilating lubricating oil system, which belongs to the field of aero-engines and comprises a first bearing cavity, a second bearing cavity, a third bearing cavity, a lubricating oil tank, a lubricating oil pump, a ventilator and an electric valve, each bearing cavity is connected with the ventilator and the lubricating oil tank through a ventilation pipeline, each bearing cavity is connected to the lubricating oil pump through an oil return pipeline, the lubricating oil pump supplies oil to each bearing cavity through an oil supply pipeline, and the lubricating oil pump is connected with the lubricating oil tank through the oil return pipeline and an oil suction pipeline; wherein the second bearing cavity and the third bearing cavity are communicated through the ventilation pipeline to realize common throttling ventilation, the electric valve is arranged on the ventilation pipeline for common throttling ventilation, and the electric valve is connected with the sealing bleed air of the second bearing cavity and / or the third bearing cavity and is used for sensing and measuring the pressure of the bearing cavity and the corresponding sealing bleed air pressure so as to obtain the sealing pressure difference; when the sealing pressure difference exceeds the threshold value range, the electric valve changes the internal throttling diameter according to actuation, then the throttling equivalent diameter of the ventilation pipeline is adjusted, and finally the pressure of the bearing cavity is dynamically adjusted.

The invention belongs to the technical field of medical instruments. The invention discloses a novel multifunctional laryngeal mask which comprises a breather pipe, one end of the breather pipe is connected with an external ventilation loop through a connector, and the other end of the breather pipe is provided with a mask body used for ventilation, exhaust and secretion suction. The mask body is provided with a mask bag structure which is matched with the mask body so as to accord with the throat and spine characteristics of a patient, so that the stable limitation on the mask body is met, and safe sealed ventilation is realized. The device has the advantages that the device can accord with throat and spine characteristics of a patient to realize safe sealed ventilation, and the risk of regurgitation and aspiration due to the fact that gas enters the stomach of the patient is not easily caused.

The utility model discloses an air temperature type vaporizer defrosting device, which relates to the technical field of defrosting devices and comprises a fixing frame, two cross rods are fixed at the bottom of the fixing frame, two universal wheels are mounted at the bottoms of the cross rods, a defrosting mechanism is arranged at the bottom of the fixing frame, and the defrosting mechanism is arranged on the fixing frame. The defrosting mechanism comprises a fan, an air inlet pipe, a heating box, a ventilation pipe, a round shell, an air conveying pipe, an annular shell and two air outlet pipes, and a transmission mechanism is arranged in the defrosting mechanism. According to the air temperature type vaporizer defrosting device, the transmission mechanism is arranged, the draught fan and the heating box are started, the draught fan sucks external air, the air enters the heating box, and the heated air is conveyed into the round shell, so that the air pushes the blade plate and the rotating rod to rotate and then enters the annular shell through the air conveying pipe; and then the air enters an air outlet pipe and is discharged from an air outlet hole to heat and defrost the air temperature type vaporizer, meanwhile, a rotating rod drives a connecting rod to rotate, and the connecting rod drives the air outlet pipe to rotate.

The utility model discloses an outdoor explosion-proof power distribution cabinet with a heat dissipation function, which relates to the technical field of heat dissipation of power distribution cabinets and comprises a cabinet body, a ventilation pipe is mounted on one side of the cabinet body, a dustproof net is mounted in the ventilation pipe, an exhaust fan is rotatably mounted on the outer side of the dustproof net, a filter plate is mounted on the other side of the cabinet body, and a heat dissipation fan is mounted on the filter plate. An air inlet fan is rotationally installed on the outer side of the filter plate, a driving mechanism used for driving the exhaust fan and the air inlet fan to rotate synchronously is arranged at the top of the cabinet body, and a cooling mechanism is arranged in the cabinet body. According to the utility model, when the exhaust fan exhausts hot air in the cabinet body, the air inlet fan is driven to suck external fresh air into the cabinet body, air circulation is accelerated, the air entering the cabinet body is converted into cold air through the cooling mechanism, and the cold air is uniformly distributed into the cabinet body, so that rapid cooling of the cabinet body is realized, and the service life of the cabinet body is prolonged. The ventilation effect of the cabinet body is optimized, and the heat dissipation efficiency of the equipment is improved.

The invention discloses an integrated prefabricated pump station with a self-cleaning function, and relates to the technical field of integrated prefabricated pump stations, the integrated prefabricated pump station comprises a base, a base, a barrel structure, a water inlet structure, a water outlet structure, a top cover, a ventilation pipe, an access hole cover and an electric cabinet, impurities attached to the bottom and the wall face of the pump station can be effectively scraped off, pipeline blockage caused by long-time accumulation of the impurities is prevented, the transportation efficiency and the operation stability of the pump station are ensured, the water inlet structure can separate large impurities out and conduct dehydration treatment, transportation of the large impurities is facilitated, and the service life of the pump station is prolonged. Meanwhile, impurities attached to the inner wall of the separation barrel can be scraped, the service life of the separation barrel is prolonged, a water outlet structure can spray water into the pump station regularly when the pump station is not used for a period of time, impurities deposited at the bottom are effectively diluted, subsequent pumping drainage through a sludge pump is facilitated, and it is ensured that the pump station is in a good working state for a long time.

The utility model relates to a storage tank for color master batches, which comprises a tank body, a cylinder body is arranged in the tank body, a cavity is reserved between the cylinder body and the tank body, the top of the tank body and the top of the cylinder body are arranged in a sealed manner, a plurality of uniformly distributed first vent holes are formed in the inner wall of the cylinder body, and a vent pipe communicated with the cavity is arranged at the bottom in the cylinder body. A plurality of uniformly distributed second ventilation holes are formed in the side wall of the ventilation pipe, a cover body is arranged at the top of the tank body, and a hot-air blower is connected to the bottom of the tank body; according to the color master batch storage tank, hot air is introduced into the tank body through the hot air blower, and the hot air can be blown out through the first vent hole and the second vent hole to dry stored color master batches, so that the color master batches are prevented from caking in the storage process, and the influence on the quality of the color master batches in subsequent use is avoided.

The invention discloses a ring main unit with a moisture-proof mechanism. The ring main unit comprises a base, a side plate, a panel, a heat conduction cover plate, a drying assembly, a heat dissipation assembly, a heat dissipation opening, a display screen, a voltmeter, an ampere meter, an observation window and a circuit breaker. The other end of the ventilation pipe is fixedly connected with a second fan, and the inner wall of the ventilation pipe is fixedly connected with active microporous silica gel; a rotary drying and dehumidifying structure is designed, when air containing moisture passes through active microporous silica gel, the active microporous silica gel can rapidly capture and adsorb water molecules in the air due to the strong adsorption capacity, the air subjected to adsorption treatment becomes dry and enters the ring main unit, an ideal operation environment is provided for equipment, and the service life of the ring main unit is prolonged. Meanwhile, in order to maintain the continuous and efficient operation of the dehumidification structure, the drying part can alternately enter a regeneration area, the active microporous silica gel is heated through the heating structure, water molecules adsorbed on the silica gel are heated and evaporated, and then regeneration of the silica gel is achieved.

The invention discloses an extraction and ventilation integrated device in a mine, and relates to the technical field of mine ventilation equipment. The extraction and ventilation integrated device in the mine comprises a cabinet body, the interior of the cabinet body is divided into an extraction cavity and a ventilation cavity which are distributed front and back through a partition plate, a first air inlet communicated with the extraction cavity is formed in the left side wall of the cabinet body, and a first air outlet communicated with the extraction cavity is formed in the right side wall of the cabinet body; the first ventilation pipe is fixedly connected to one side of the interior of the extraction cavity and communicates with the first air inlet; the filter screen is detachably connected to the interior of the first ventilation pipe; the spraying pipe is fixedly connected to the interior of the first ventilation pipe and located above the filter screen; and the cleaning roller is arranged below the filter screen. Through the design of the spraying pipe and the cleaning roller, the filter screen can be cleaned, the filter screen is not prone to being damaged, the cleaning effect is good, and the cleaning roller can be cleaned in real time.

The utility model discloses a fire-fighting smoke exhaust pipeline, and relates to the technical field of fire-fighting equipment. The pipeline body comprises a fan, a ventilation pipe and a filter device, a through groove is formed in the inner wall of the ventilation pipe and divides the ventilation pipe into a first ventilation pipe and a second ventilation pipe, the fan is arranged in the first ventilation pipe, the filter device is arranged between the first ventilation pipe and the second ventilation pipe, and the filter device comprises an annular filter screen, a brush roller, a rotating roller and a motor; the annular filter screen is wound on the brush roller and the rotating roller, the annular filter screen can effectively filter impurities in the smoke, the fan provides strong power, and it is ensured that the smoke is rapidly discharged. Through cooperation of the brush roller and the cleaning brush, automatic cleaning of the filter screen is achieved, blockage is reduced, long-term stable operation is guaranteed, through combination of the heat insulation ring and the rock wool board, high temperature is effectively blocked, the pipeline and peripheral equipment are protected, the protective net protects the fan, the service life of the pipeline is prolonged through the high-temperature-resistant coating, and the reliability of a fire fighting system is improved.

The utility model discloses a filtering device for flue gas waste heat recovery, which comprises a ventilation pipe, two ends of the ventilation pipe are respectively provided with an air inlet and an air outlet, a plurality of filter screens are detachably connected in the ventilation pipe along the length direction of the ventilation pipe, and a first rotating shaft is rotatably mounted on one side of each filter screen in the ventilation pipe. Knocking mechanisms are fixedly connected to the first rotating shafts, a gear motor is fixedly installed on the outer wall of the ventilation pipe through a support, the first rotating shafts are in transmission connection with an output shaft of the gear motor, and the bottom of the ventilation pipe is located on the side, facing the air inlet, of each filter screen and fixedly communicates with an ash hopper. According to the filtering device, after the filtering device is used for a period of time, the gear motor is started to drive the first rotating shafts to rotate, and the knocking mechanism can be driven to rotate, so that the filter screen is knocked by the knocking mechanism to shake off dust adhered to the filter screen, and the dust on the surface of the filter screen can be cleaned without taking out the filter screen; the manual maintenance period of the filter screen is greatly prolonged, and the use effect is good.

The utility model discloses a crushing and drying all-in-one machine in the technical field of material drying and screening, and aims to solve the problem that materials are easily accumulated at the lower part of equipment to influence the efficiency and normal operation of the equipment when the materials are dried by airflow in the prior art. The device comprises a shell, a first ventilation pipe is arranged on the lower portion of the shell in a communicating mode, a positioning plate is arranged on the portion, located above the first ventilation pipe, in the shell, a guide cylinder close to the inner wall of the shell is arranged on the positioning plate, a shaft rod is rotationally installed below the shell, and a smashing disc rotating in the shell is arranged at the top end of the shaft rod; the crushing disc is arranged at the position above the guide cylinder, and the guide cylinder is used for limiting an air source to penetrate through an area between the guide cylinder and the shell; the crushing device is used for reducing the phenomenon that wet materials are directly accumulated at the bottommost part of the crushing cylinder, is beneficial to preventing the transmission part of the crushing disc from being blocked by the materials, is also beneficial to improving the processing degree of the materials, and is beneficial to improving the crushing efficiency of equipment.

The invention relates to the technical field of medical equipment, in particular to a tympanic membrane ventilation pipe, a conveyor and a catheterization system of the tympanic membrane ventilation pipe. The device is suitable for tympanic membrane ventilation pipe indwelling. The tympanic membrane ventilation pipe comprises an inner claw, a pipe body and an outer claw, the pipe body is a hollow pipe, the two ends of the pipe body are fixedly connected with one end of the inner claw and one end of the outer claw respectively, and the other ends of the inner claw and the outer claw are free ends; the free end is made of memory alloy, is in a straightened state at the temperature of 0 DEG C and is in a bent state at the temperature of 20-40 DEG C. And the inner claw and the outer claw are bent to realize multi-point and internal and external bidirectional fixation. The invention further provides a brand-new conveyor which is used in cooperation with the tympanic membrane ventilation pipe to form a tympanic membrane ventilation pipe indwelling system, tympanic membrane incision is not conducted any more through tympanic membrane ventilation pipe indwelling, the cutting process, the leading-in process and the indwelling process are integrated, the puncture hole diameter size and depth are effectively controlled, accidental injuries are reduced, the operation safety degree is improved, the operation operation is simplified, and the operation duration is shortened.

The utility model provides a rice low-temperature storage room, which comprises an air supply pipe, an air inlet pipe, an air outlet pipe, an air outlet pipe, an air outlet pipe and a control device, and is characterized in that the air supply pipe is mounted on one side of a wall body of the storage room and externally connected with a fan to guide low-temperature air into the air supply pipe; a plurality of groups of air adjusting pipe fittings are installed on the air supply pipe, each air adjusting pipe fitting comprises a branch pipe seat and a ventilation pipe rotationally installed on the branch pipe seat, the ventilation pipes are communicated with the air supply pipe through the branch pipe seats, each ventilation pipe is of a telescopic tubular structure, and air holes are distributed in the ventilation pipes. The device is externally connected with refrigeration equipment through an air supply pipe, and cold air is guided into the air supply pipe and guided into accumulated rice through a ventilation pipe. The ventilation pipe is of a telescopic tubular structure, the placement angle can be adjusted, and the length of the ventilation pipe can be adjusted according to the rice stacking area so that the ventilation pipe can be inserted into the stacked rice, so that the temperature in the rice is reduced, and the interior of the rice is ventilated.

The invention belongs to the technical field of mine ventilation management and control, and particularly relates to an intelligent mine ventilation management and control method and system, and the method comprises the following steps: S1, data perception and fusion: collecting multi-source heterogeneous data from a ventilation facility, an environment sensor and a personnel positioning system through a multi-protocol data gateway, and generating a standardized data flow; s2, constructing and updating a digital twinborn body: driving and constructing the digital twinborn body of the mine ventilation system based on the standardized data flow; s3, intelligent deduction and decision making; s4, strategy execution and closed-loop control are carried out; and S5, edge autonomy. The heterogeneous data is integrated through the multi-protocol data gateway, and the standardized data stream is generated, so that a unified and high-quality data basis is provided for subsequent analysis, and the problem of information islands is solved. And the digital twin is dynamically calibrated based on real-time and feedback data, so that the simulation precision is remarkably improved, and the underground ventilation condition can be reflected more truly.

The laryngeal mask structure comprises a mask head, the top of the mask head is fixedly connected with a ventilation catheter, the end, away from the mask head, of the ventilation catheter is provided with a catheter connector, the upper end of the ventilation catheter is fixedly sleeved with a mounting plate, and flexible piezoelectric materials are fixedly arranged at the bottom of the mask head. An intelligent data acquisition unit is fixedly arranged on the mounting plate, a silica gel cover is fixedly arranged on the outer side of the cover head, an air injection pipe is fixedly arranged at the upper end of the cover head, and a connector is arranged at the side end of the silica gel cover. The breathing sound of a patient is preliminarily collected through a flexible piezoelectric material, collected breathing sound data are transmitted to an intelligent data collection unit through a wire, a data collector in the intelligent data collection unit collects data subjected to filtering output again, the collected breathing sound data are transmitted to a computer through a wire, and the computer is connected with the intelligent data collection unit through a wire. Doctors can diagnose according to the breathing sound data on the computer without replacing equipment, so that the use is convenient.

The invention belongs to the technical field of medical instruments, and particularly relates to a guide wire insertion guiding device for cardiovascular surgery, which comprises a frame, a handle fixedly connected to the side surface of the frame, driving wheels symmetrically arranged on a strip-shaped frame, driven wheels rotationally arranged on the strip-shaped frame in an array manner, and a driving motor arranged in the strip-shaped frame, a driven mechanism is arranged in the strip-shaped frame, a ventilation pipe is fixedly arranged in the driven wheel, a connecting cylinder is movably connected to the bottom end of the ventilation pipe, a communicating pipe is fixedly connected to the bottom of the connecting cylinder, and a flow dividing pipe is arranged in the strip-shaped frame. According to the guide wire insertion guiding device for the cardiovascular surgery, the temperature of a guide wire can be conveniently adjusted by adopting an electric heating block and a driven wheel, the machine works to generate wind flowing, the electric heating block works to heat a shunt tube, and when wind flows in the shunt tube, the driven wheel and the guide wire are heated; the temperature of the guide wire is close to that of a human body, and adaptability of the guide wire insertion guiding device for cardiovascular surgery is improved.

The invention relates to the technical field of air conditioners, in particular to a ventilation mechanism for a valve box and a configuration method, and aims to solve the problems that an existing valve box leaked refrigerant discharging mode has high requirements for the mounting position of the valve box and cannot adapt to different mounting scenes. In order to achieve the purpose, the ventilation mechanism comprises an air pipe and at least one fan, an air inlet is formed in a box body of the valve box, the air inlet end of the air pipe is communicated with the box body, and the air outlet end of the air pipe is communicated with the outdoor environment; the fan is used for discharging air in the box body to the outside through the air pipe, and the rotating speed of the fan or the fan combination can be selectively adjusted according to the length or static pressure of the air pipe. According to the ventilation mechanism, the number of the fans and the rotating speed of the fans can be determined according to the installation position of the valve box, the fans can discharge leaked refrigerants, noise generated in the operation process of the fans can be reduced, the user experience is improved, the valve box can adapt to different installation scenes, and application is wider.

The utility model provides a textile fabric air permeability detection device, which belongs to the field of fabric detection and comprises an operation table, a ventilation pipe is arranged on the operation table in a penetrating manner, an air flow sensor is mounted in the ventilation pipe, and a fan is fixedly mounted at the bottom of the ventilation pipe; and the stretching assembly comprises four moving plates, a threaded rod, a lifting plate and four connecting rods, the four moving plates are all arranged on the operation table, clamping assemblies are all arranged on the four moving plates, and guiding assemblies are arranged between the four moving plates and the operation table. According to the detection structure, the stretching assembly is arranged, the situation that air passes through the cloth due to looseness or wrinkles is avoided, so that the accuracy of the detection structure is ensured, the clamping assembly is further arranged, the cloth can be prevented from loosening or falling off in the detection process, and the detection stability is improved.

The invention discloses a mechanical sealing device of a boiler feed pump, and aims to solve the problem of performance change caused by long-term high-temperature environment of a mechanical sealing spring in the prior art. The device comprises a ring seal set arranged in a gap between a feed pump end shell and a shaft body, a spring set is arranged on the side edge of the ring seal set, and the end, away from the ring seal set, of the spring set protrudes out of the end shell and makes contact with an end plate arranged on the shaft body in a sleeving mode. The key point is that an air bin is arranged at a gap formed by the spring group and the shaft body, and the air bin is communicated with the outside through a ventilation pipe; and the side edge of the end plate is sleeved with an exhaust fan synchronously rotating with the shaft body. When the water feeding pump works, the exhaust fan rotates, hot air in the space where the spring set is located is pumped out, and meanwhile the air bin sucks cold air from the outside to form continuous airflow circulation, so that the spring set is effectively cooled, the risk that the performance of the spring is reduced due to high temperature is reduced, and the stability and the service life of the mechanical seal are guaranteed.

The application provides a kiln ventilation regulation device, comprising: a ventilation pipe; a protection shell is fixedly installed on the surface of the ventilation pipe, a connecting shell is fixedly installed on one side of the protection shell, a supporting plate is fixedly installed in the inner cavity of the ventilation pipe, a supporting rod is fixedly installed on the top of the supporting plate, and a supporting disc is fixedly installed on the top of the supporting rod. Through the design of the regulation assembly, the regulation assembly adopts a worm, a worm wheel, a rotating gear and an adjusting disc transmission structure, worm and worm wheel transmission improves stability, the rotating gear and the teeth can realize precise adjustment of the angle of the adjusting fan blade, the ventilation volume control error is reduced, the precision is improved compared with traditional manual adjustment, multiple adjusting fan blades are linked through adjusting rods and adjusting discs, the ventilation pipe inner cavity ventilation cross-sectional area can be changed synchronously, the airflow deflection problem of traditional single baffle adjustment is avoided, the kiln working condition rapid change demand is adapted, a sealing strip is arranged on the top of the adjusting fan blade, and heat loss caused by traditional baffle gap air leakage is avoided.

The invention relates to the technical field of ventilation assemblies, and discloses a medical negative pressure isolation ward ventilation regulation and control assembly which comprises a ward local wall body, a first ventilation pipe is installed in the ward local wall body, a second ventilation pipe is installed at the rear end of the first ventilation pipe through a side plate, and an external line disinfection pipe is installed on the inner side of the side plate. And an air inlet pipe is mounted at the rear end of the second ventilation pipe through a mounting plate. According to the medical negative pressure isolation ward ventilation regulation and control assembly, an external line disinfection pipe is installed between a first ventilation pipe and a second ventilation pipe, the positions of the two sides of the external line disinfection pipe are limited through side plates, meanwhile, a plug pin is installed in an installation sleeve to limit the position of the external line disinfection pipe, and the convenience of structure assembly and disassembly is ensured; and after the external wire disinfection pipe is detached, the bolt can be rotated to adjust the elasticity of the spring, and meanwhile, the activated carbon can be detached and replaced, so that the convenience is improved during subsequent maintenance.

The utility model belongs to the field of environment-friendly dust removal equipment, and particularly relates to a small-sized dust remover provided with a three-stage air filter, which comprises a small-sized dust remover, a secondary air filter arranged on the back of the small-sized dust remover, a three-stage air filter arranged on the side surface of the small-sized dust remover, a first filter element is arranged in the first shell, and the first air inlet is connected with an air outlet of a silencing pipe of the small dust remover through a ventilation pipe; the third-stage air filter comprises a second shell, a second filter element is arranged in the second shell, and the second air inlet is connected with the first air outlet through a ventilation pipe elbow. The two-stage and three-stage dust removal device realizes two-stage and three-stage dust removal, can be used for in-situ dust collection and three-stage dust removal of'clean workshops' or individual or several dust pollution source points of the'clean workshops', and solves the problem that the space height is limited by the height of the workshops.

The invention belongs to the technical field of green buildings, and particularly relates to an intelligent regulation and control cold storage system for a green building. And a greening land is arranged on the roof. The ventilation pipe and the air guide pipe are cooled through the heat conducting plate arranged at the bottom of the water tank, heat exchange is conducted between all the air blocking pieces on the right portion of the air guide box and water in the water tank, and then airflow flows at the low flow speed and makes contact with all the air blocking pieces on the right portion of the air guide box; the air flow is cooled through all the air blocking pieces on the right side of the air guiding box, when the air flow flows through the ventilation pipe and the air guiding pipe, the temperature of the air flow is reduced, the air guiding pipe is blocked through the two air blocking pieces, air is blown to the surface of the roof through the exhaust pipe, and therefore heat of the roof is taken away through the cooled air flow; and therefore, the surface of the roof is cooled, the temperature of the surface of the roof is reduced, the indoor temperature can be reduced, and energy consumption is reduced.

The application relates to the field of granulating and polishing, and particularly discloses a polishing device for a granulator, which comprises a machine body, a round pot rotatably arranged on the machine body, a ventilation pipe rotatably arranged on the machine body, the ventilation pipe being arranged in the round pot, the rotation axis of the ventilation pipe being consistent with the length direction of the machine body, and a rotating mechanism for rotating and adjusting the ventilation pipe being arranged on the machine body; the rotating mechanism comprises a rotating rod rotatably arranged on the machine body, and the ventilation pipe is arranged on the rotating rod; a moving plate is also slidably arranged on the machine body, the rotating rod is rotatably arranged on the moving plate, a sliding rail is fixedly connected to the machine body, an installation plate is arranged on the sliding rail, a supporting column is fixedly connected to the installation plate, an electric telescopic rod is fixedly connected to the machine body, the telescopic end of the electric telescopic rod is fixedly connected to the installation plate, the supporting column is slidably connected to the moving plate, and a driving mechanism for driving the moving plate is arranged on the machine body. The application has the effect of improving the uniform drying of materials.