41results about How to "Guaranteed ventilation efficiency" patented technology

The invention discloses an anti-blockage mine ventilator. The anti-blockage mine ventilator comprises a machine sleeve; a fixed frame is arranged at one end in the machine sleeve; a motor is arranged in the fixed frame; the surface of a rotating shaft of the motor is sleeved with a bearing sleeve; a blade is arranged at one end of the bearing sleeve; a connecting rod is arranged at one end of the blade; the surface of one end of the connecting rod is sleeved with a separation net; the separation net is sleeved into a fixed sleeve; and the outer side of the fixed sleeve is connected with the machine sleeve. Through mutual matched use of the connecting rod, a connecting ring, a fixed rod, a fixed plate and a cleaning brush, the anti-blockage mine ventilator achieves the advantages of conveniently cleaning the separation net, preventing blockage of the separation net, guaranteeing the ventilation efficiency and the circulation of air in mine ways and prolonging the service life of the ventilator; and the anti-blockage mine ventilator is provided with a collecting box, and a collecting cavity, a filter plate and a graphite plate are arranged in the collecting box for mutual matched use, so that the advantages of preventing flowing out of dust through wind currents and protecting the environment and the health of external workers are achieved.

The invention discloses a ventilation backwash filtering screen system and a cleaning method of the ventilation filtering screen, and aims to provide a ventilation backwash filtering screen system with low use cost so as to solve the problem that the conventional ventilation filtering screen needs to be maintained manually and frequently after dust accumulation. With the system, the frequency of cleaning and maintaining the ventilation filtering screen manually is greatly reduced. The ventilation backwash filtering screen system comprises a shell, a filtering screen installed on the shell, a motor, at least one rotation arm and hairbrush bars, wherein the motor is installed in the center of the filtering screen and the output shaft of the motor is perpendicular to the plane of the filtering screen; the at least one rotation arm is fixedly connected with the output shaft of the motor; the hairbrush bars are installed on the rotation arms; the brush surfaces of the hairbrush bars are in contact with the surface of the filtering screen, and the hairbrush bars extend outward from the middle of the filtering screen to the edge of the filtering screen. The ventilation backwash filtering screen system is simple in structure, is simple to use and maintain, and is low in cost; the ventilation backwash filtering screen system and the cleaning method of the ventilation filtering screen can be applied to various ventilation occasions, especially the occasions with high ventilation quality requirement.

The invention discloses an electromotor capable of filtering dust and high in heat dissipation performance. The electromotor comprises an electromotor shell, a dust filtering net, a fan cover and heat dissipating ribs, a swing ring is arranged at the top of the electromotor shell, the heat dissipating ribs are arranged in the electromotor shell, a rotating shaft is mounted inside the electromotor shell, a bearing, a rotor and a fan are mounted on the rotating shaft from front to back sequentially, a stator core is mounted on the rotor, a stator coil wraps the stator core, a damping rubber gasket is arranged on the stator core, a rear end cover I mounted at the rear end of the electromotor shell, and the dust filtering net is arranged on the inner side of the fan cover. The electromotor has the advantages that uneven numbers of fan blades are arranged to generate irregular air flows to cool the electromotor, excellent cooling effect is realized; by the aid of the dust filtering net mounted between the fan and the fan cover, almost dust in the air can be cleaned, dust attached to the fan blades can be reduced, and maintenance of ventilation efficiency of the electromotor is benefited.

The invention discloses an intelligent control system for a ventilation cabinet used for a laboratory. The intelligent control system comprises a detecting unit, a collecting unit, a ventilating unit, a timing unit and a control unit. The detecting unit is used for detecting whether people exist in an experiment operation area or not. The collecting unit is used for beginning to collect the gas concentration in the ventilation cabinet every other t time when the detecting unit detects that people exist in the experiment operation area, and the gas concentration in the ventilation cabinet is recorded as C1, C2,..., Cn. The ventilating unit is used for conducting ventilating on the interior of the ventilation cabinet. The timing unit is in communication connection with the control unit and obtains time information through the timing unit. The control unit is in communication connection with the detecting unit, the collecting unit and the ventilating unit, obtains the gas concentrate C1, C2,..., Cn in the ventilation cabinet through the collecting unit and controls the ventilating unit to act according to the C1, C2,..., Cn and a time information instruction.

The invention discloses a work frame special for art design, relates to the field of art design, and provides the following scheme for solving the problems that an existing work frame for art design generally cannot conduct damp-proof and dust-proof protection on works, the works are placed disorderly, and art aesthetics is affected. The work frame comprises a frame body, the frame body is of a box type structure, fixing plates of the same structure are fixedly installed on the inner wall of the frame body at equal intervals in the height direction of the frame body, a partition plate and a driven gear are slidably installed on the fixing plates, a containing plate is fixedly connected to the top end of the driven gear, a first adjusting device and a second adjusting device are arranged between the partition plate and the fixing plates and between the driven gear and the fixing plates correspondingly, an inserting groove is formed in one side edge of the frame body, and a drawing display device is arranged in the inserting groove. The work frame is novel in structure, the display effect and the storage time of artistic works can be effectively improved by using the artistic work frame, and the artistic works are prevented from being affected with damp or adhering to dust.

The invention discloses an airflow silencing and guiding device for an aerodynamic device. The airflow silencing and guiding device for the aerodynamic device comprises a flow guiding mechanism and asilencing mechanism. The flow guiding mechanism comprises multiple grades of flow-guiding and silencing cones, a locating support assembly, a protective cover and a butt flange. The multiple grades offlow-guiding and silencing cones are vertically overlaid and in clearance type distribution. The locating support assembly comprises multiple supporting rods and a joint ring. The protective cover covers the multiple grades of flow-guiding and silencing cones. The lower end of the butt flange is connected with the silencing mechanism. The silencing mechanism comprises a silencing body and a silencing cylinder. The silencing body is located in the silencing cylinder, and an interval exists between the silencing body and the silencing cylinder and forms a ventilation channel. Airflow is fed into the protective cover from the periphery via ventilation holes on the protective cover, after the airflow passes by the flow-guiding cones, annular airflow is formed and rapidly enters the ventilation channel, and when the airflow passes through the ventilation channel, by means of the silencing cylinder and the silencing body which constitute the two sides of the ventilation channel, noise is effectively lowered.

The invention discloses a mine exploring ventilation device which comprises a ventilation rack. A ventilation cavity is formed in the middle of the inside of the ventilation rack, one end of the ventilation cavity is fixedly connected with a pressurizing device, the ventilation cavity is positioned on the inner side of the pressurizing device and fixedly connected with a filter net, a fan fixing frame is fixedly connected in the middle of the inside of the ventilation cavity, a power motor is fixedly connected with one side of the inside of the fan fixing frame, an output shaft of the power motor is rotatably connected with an impeller rotating shaft, impellers are mounted on the outer wall of the impeller rotating shaft, a first adjuster is mounted at the bottom of the inner wall of the fan fixing frame, and a control device is fixedly connected at a position, between the ventilation rack and the ventilation cavity, of the bottom of the inner side of the ventilation rack. The invention relates to the technical field of mine machinery. The mine exploring ventilation device achieves the objective of ventilating a mining area, ventilation efficiency and controllability of an air inlet are improved, air quality of the mining area is improved, and personnel safety is ensured more effectively.

The invention discloses a gas silencing and guiding device for a mining local ventilator. The gas silencing and guiding device comprises multiple stages of flow guide silencing cones, a positioning support assembly, a protective cover and a connecting flange, and the multiple stages of flow guide silencing cones are laminated up and down and distributed at intervals; the flow guide cone opening ofeach stage of flow guide silencing cone is gradually increased, and the diameter of each flow guide cylinder is matched with the aperture of the corresponding flow guide cone opening and is also gradually increased; sound insulation felts are paved on the inner surfaces and the outer surfaces of the flow guide cones and the flow guide cylinders; the positioning support assembly comprises a plurality of supporting rods and connecting rings, the supporting rods are arranged between supporting tables of the flow guide silencing cones, and the connecting rings are connected with the upper end surface of the connecting flange; the protective cover is of a cylindrical structure with an opening in the lower end, a plurality of ventilation holes are evenly formed in the protective cover, and theprotective cover covers the multiple stages of flow guide silencing cones; and the lower end of the connecting flange is connected with an air inlet of a ventilator. According to the device, gas can enter the device along the axial direction and the annular air inlet, the airflow noise is reduced from the air inlet source, and the airflow noise is reduced to the maximum extent while the ventilation efficiency is ensured.

The invention discloses a bidirectional-flow total-heat fresh air device and belongs to fresh air devices. An existing fresh air device is large in product thickness and internal air channel resistance. According to the bidirectional-flow total-heat fresh air device, centrifugal draught fans used as an indoor air supply draught fan and an outdoor air supply draught fan are transversely arranged, namely the axial direction of a centrifugal wind wheel of each centrifugal draught fan is identical with that of the thickness of a box body, so that the product thickness is reduced, and the product thickness can reach 200-220 mm. Besides, an outdoor side cavity and an indoor side cavity of the box body are each partitioned into an upper layer and a lower layer which are used for intake and exhaust correspondingly, so that the internal air channel resistance is reduced; in this way, the product thickness is reduced, the same ventilation efficiency is guaranteed, and the power of the draught fans is not increased.

The invention relates to a large shield subway station structure. The large shield subway station structure comprises a plurality of sections of tube segments; concrete layers are arranged on the inner sides of the tube segments; waterproof layers are arranged between the concrete layers and the tube segments; subway station space is formed within the concrete layers; top plates, middle plates and bottom plates are connection into the concrete layers; the subway station space is divided into a pipeline layer, a station hall layer, a platform layer and a functional layer; thickening parts areintegrally manufactured at the end parts, close to the concrete layers, of the middle plate and the bottom plate; the platform layer comprises a prefabricated platform positioned in the middle and subway tracks on two sides of the prefabricated platform; at least one row of hooks are buried at the bottom and above the subway tracks; the hooks are connected with an air duct; the inner sides of thesubway tracks are provided with evacuation channels; a plurality of partition walls are arranged in the functional layer; and each partition wall is divided into an equipment room, a pipeline room anda drainage room; The invention also relates to a construction method of the large shield subway station structure. The construction method comprises six steps. The large shield subway station structure can greatly improve the space utilization rate of the subway station, and effectively solves the problem of constructing the subway station by tunneling under complex environmental conditions.

The invention relates to a formaldehyde oxidation reactor, which comprises a reactor body, a filtering chamber is fixedly installed on the lower portion of the left side of the reactor body, an air inlet pipe is movably installed on the left side of the filtering chamber, and the reactor body, the filtering chamber and the air inlet pipe communicate with one another; a cutting mechanism and a crushing mechanism are sequentially and movably arranged in the reactor body from bottom to top, and an anti-blocking mechanism matched with the cutting mechanism is movably arranged at the position, close to the lower end, of the left side in the reactor body. By setting up the cutting mechanism, the existing way of air intake through a pipe is changed, the industrial waste gas is divided into a plurality of parts, and is in contact with a potassium permanganate solution from each part of the bottom, so that the industrial waste gas is in more sufficient contact with the potassium permanganate solution, the formaldehyde is favorably purified, and the formaldehyde purification efficiency is improved; by setting up the crushing mechanism to crush large bubbles, and the contact area between the gas and the potassium permanganate solution is increased.

The invention relates to self-cleaning ventilation equipment which comprises a box body, a first limiting ring, a first spring, a barrel body, a second power device, a second rotating shaft, a dust outlet pipe and a dust collecting assembly. An air inlet pipe is arranged at the top of the box body and provided with a first electromagnetic valve; an air outlet pipe is arranged at the bottom of the side edge of the box body; the first limiting ring is arranged on the inner wall of the box body; a horizontal first filter screen is placed on the first limiting ring; the first spring is arranged on the inner side of the top of the box body; the second power device is arranged on the inner side of the bottom of the box body; multiple groups of fan blades are arranged on the second rotating shaft; the dust outlet pipe is arranged on the outer side of the top of the box body; a dust inlet pipe is vertically arranged at the bottom of a dust collecting box; a second limiting ring is arranged on the inner circumferential wall of the dust inlet pipe; a second spring is arranged on the inner side of a box cover; and a pressing plate is horizontally arranged at the bottom of the second spring. According to the self-cleaning ventilation equipment provided by the invention, the cleanliness of air entering a room is guaranteed, the first filter screen can be automatically cleaned, and time and labor are saved; and meanwhile, the air entering the room can be in a proper humidity range.

The invention discloses a heat exchange energy-saving system for a house building. The heat exchange energy-saving system comprises a temperature difference induction mechanism and a heat exchange ventilation mechanism which are arranged in a wall body, the heat exchange mechanism comprises a heat exchanger, and an outer side ventilation opening is formed in the end, close to the outer side of the wall body, of the heat exchanger; an inner side ventilation opening is formed in one end close to the inner side of the wall body, and a flow control unit is arranged at the inner side ventilation opening and adjusts the flow passing through the inner side ventilation opening according to the temperature difference between the inner side and the outer side of the wall body. The ventilation efficiency inside and outside the house can be controlled according to the temperature difference inside and outside the house, when the temperature difference is large, the ventilation efficiency is reduced, the heat exchange time is prolonged, external air enters the house after sufficient heat exchange, heat preservation and energy conservation of the house are more emphasized when air circulation is guaranteed, and meanwhile the comfort of people is improved; when the temperature difference is small, the air exchange efficiency is improved, rapid air exchange is carried out, the house can be rapidly ventilated, and fresh indoor air is guaranteed.

The invention belongs to the technical field of ship air conditioning systems, and discloses an air distributor and a ship air conditioning system. The air distributor comprises an air inlet mechanism, a pressure stabilizing box, an air outlet mechanism and a flow guide folded plate. The air inlet mechanism and the air outlet mechanism are fixed on the pressure stabilizing box; the flow guide folded plate comprises a first flow guide plate and a second flow guide plate; the first flow guide plate is fixed to the inner wall of the pressure stabilizing box, and an air inlet buffer cavity is formed in the air inlet side in the pressure stabilizing box. The second flow guide plate is fixed to the inner wall of the pressure stabilizing box, and a pressure stabilizing buffer cavity is formed inthe air outlet side in the pressure stabilizing box. The second flow guide plate is connected with the first flow guide plate to form a V-like flow guide cap; an inner cavity of the V-like flow guidecap is communicated with the air outlet mechanism, and the V-like flow guide cap is located above an air outlet of the air outlet mechanism; a flow stabilizing channel is reserved between the air inlet buffer cavity and the pressure stabilizing buffer cavity. According to the air distributor and the ship air conditioning system, noise can be greatly reduced.

The invention provides an automobile window ventilation burglar mesh structure. The structure comprises an automobile side face, an side wall air duct, a fixed air duct, a slot, an air collecting duct, a positioning air port, a driving wheel, a driving sheet, a rolling cavity, a connecting wheel, a positioning fixture block, a stop lever, a bearing block, a steel wire, a movable wheel and an elastic push rod, the air collecting channel is arranged on the surface of the automobile side face, the side wall air duct is formed in the inner wall of the automobile side face, the fixed air duct is arranged below the side wall air duct, the slot is formed in the automobile side face, the positioning air port is fixedly formed in one side of the fixed air duct, the driving wheel is arranged on oneside of the air collecting channel, the driving sheet is arranged on one side of the driving wheel, the connecting wheel is arranged below the driving wheel, and the positioning clamping block is fixedly arranged on the periphery of the connecting wheel. The position of the movable wheel can be changed through rotation of the rolling cavity, the movable wheel drives the connecting wheel on the upper portion of the positioning clamping block to rotate, air outside the automobile is introduced into the rolling cavity, the rolling cavity is blocked, the air rushes into the automobile from the side wall air duct, and the ventilation efficiency in the automobile is guaranteed while the anti-theft level of the automobile is improved.

The invention discloses an industrial fan capable of automatically controlling air volume, and particularly relates to the technical field of fans. The industrial fan comprises a first shell, a firstmotor, a rotating shaft and a plurality of fan blades, the first motor is fixedly arranged in the first shell, the rotating shaft is fixedly arranged on an output shaft of the first motor, and the plurality of fan blades are fixedly arranged at the outer end of the rotating shaft. The rotating shaft and the fan blades are arranged in the first shell, a first hollow circular ring is fixedly arranged at one side of the first shell, a through opening is formed at one side of the first hollow circular ring, a plurality of first ventilation openings are formed at the front end of the first hollow circular ring, and a control mechanism is arranged at the front end of the first hollow circular ring. Outdoor air enters a room through a second ventilation opening, meanwhile, indoor air can penetrate through a second hollow circular ring and the first hollow circular ring to circulate to the outside, air circulation is prevented from being hindered, and the ventilation efficiency and effect areeffectively guaranteed.

The invention discloses an intelligent air draft adjusting oil smoke exhaust hood which comprises an oil smoke hood body, an elbow and a degreaser box, the center of the upper side of the oil smoke hood body is connected with the elbow through a bolt, the center of the upper end of the elbow is connected with the degreaser box through a screw, and one side of the degreaser box is connected with an atomizing pump through a bolt. A spraying ring pipe is welded to the interior of the upper end of the elbow, and atomizing nozzles are arranged on the spraying ring pipe at equal intervals. According to the oil fume extraction cover, the oil fume concentration sensor and the intelligent control module are arranged, so that when the oil fume extraction cover is used, the air extraction efficiency can be automatically adjusted according to the oil fume concentration, and then the oil fume extraction efficiency of the oil fume cover is guaranteed; and the atomizing pump can atomize and spray the degreaser in the degreaser box onto the fan blades through the atomizing spray head, so that the fan blades are prevented from accumulating greasy dirt, and the air draft efficiency of the fan blades is improved.

The invention discloses a safe and efficient construction method of long-distance one-end heading face ventilation raise. Before construction of the ventilation raise, first a ventilation hole is drilled between an upper middle section tunnel and a lower middle section tunnel, construction of the ventilation raise with the ventilation hole as the center is carried out to ensure smooth ventilationof the ventilation raise, meanwhile, carbon oxides can also be discharged quickly by the ventilation hole, and the construction efficiency and safety of the ventilation raise are ensured; for a drilling machine, a portable full hydraulic core drilling machine is selected, and a rope coring drilling technology, a bidirectional drill tooth diamond drill bit and a drill bot on-line hole bottom grinding technology are adopted to improve the drilling efficiency of the ventilation hole; the ventilation adopts a method for erecting a construction operation platform to prevent the problem that a ropeof a hoisting tank may be stuck in construction of the ventilation raise; and a ventilation raise construction working face simultaneously adopts a wind and water linking wind supply device and a cloth-barrel type wind supply device, the concentration of the carbon oxides, nitrogen dioxides and dust of the working surface can be reduced, and the construction efficiency of the ventilation raise isimproved.

The invention discloses a BIM (Building Information Modeling)-based heating and ventilation pipeline classification design method, which comprises the following steps: connecting pipes, respectively drawing different arrangement orientations of heating and ventilation pipelines in Revit software, then systematically distinguishing and classifying the pipelines according to names and materials, and finally correspondingly setting colors according to different materials. And finally, all the pipelines are connected with the connecting pipes through bolts. By arranging an automatic dredging mechanism, when a large amount of residues adhere to the inner wall of a heating and ventilation pipeline B, the heating ventilation capacity of the heating and ventilation pipeline B is reduced, and the pressure in a connecting pipe and a heating and ventilation pipeline A is increased, so that a sliding block in the connecting pipe slides in a sliding groove under pressure to extrude an elastic plate to deform, and a push plate is pushed to slide in the connecting pipe; the outer wall of the heating and ventilation pipeline A and the outer wall of the heating and ventilation pipeline B are pushed out, the outer walls of the heating and ventilation pipeline A and the heating and ventilation pipeline B are scraped in real time, and it is guaranteed that the outer walls of the heating and ventilation pipeline A and the heating and ventilation pipeline B are clean and not corroded.

The invention relates to a dual-parameter vehicle window opening amplitude adjusting platform and method. The platform comprises a wind speed detection mechanism, first analysis equipment and second analysis equipment, wherein the wind speed detection mechanism comprises wind speed measuring units which are arranged at the outer edges of windows of a vehicle correspondingly and used for measuring the outer side wind speeds of the windows correspondingly; the first analysis equipment is used for removing the maximum value and the minimum value of the received outer side wind speeds of the windows to obtain the outer side wind speeds of the remaining windows and conducting mean value calculation on the outer side wind speeds of the remaining windows to obtain the reference outer side wind speed; and the second analysis equipment is used for analyzing the corresponding vehicle window opening amplitude based on the received number of people in the vehicle and the reference outer side wind speed. The dual-parameter vehicle window opening amplitude adjusting platform and method are compact in design and stable in operation. Due to the fact that a vehicle window control mechanism based on dual parameters is adopted, the ventilation efficiency is guaranteed, and meanwhile the situation that the wind speed in the vehicle is too high is avoided.