33results about How to "Guaranteed ventilation efficiency" patented technology

The utility model belongs to the field of filter screen assemblies, particularly relates to a filter screen assembly of a central air conditioner outdoor unit, and aims to solve the problems that an existing filter screen assembly is easily blocked by dust and foreign matters in air after being used for a long time, normal air circulation is affected, the air exchange efficiency of an air conditioner is reduced, the assembly is inconvenient to disassemble and assemble, and the air conditioner outdoor unit is inconvenient to maintain. According to the technical scheme, the filter screen assembly comprises an outer frame, an inner frame and an inner plate, the outer edge angles of the outer frame, the inner frame and the inner plate are all arranged to be arc-shaped, the rear side of the outer frame is fixedly connected with the front side of the inner plate, and holes are formed in the inner plate, so that the filter screen assembly is convenient to disassemble and assemble; according to the air conditioner outdoor unit, the filter screen assembly can be conveniently overhauled and replaced, the filtering work of the air conditioner outdoor unit is guaranteed, the filter screen assembly blocked by dust and foreign matter in air can be cleaned, normal air circulation and the air exchange efficiency of the air conditioner are guaranteed, and normal use of the air conditioner outdoor unit is achieved.

The invention relates to the technical field of fire-fighting equipment, and discloses a cabinet type heptafluoropropane gas fire extinguishing device which comprises a cabinet body, and a tank body is mounted in the cabinet body; the spraying assembly is used for spraying heptafluoropropane gas; the anti-blocking assembly is used for preventing the pipeline from being blocked; the cooling assembly is used for preventing the tank body from being overheated when a fire disaster occurs; a front door is mounted on the front side of the cabinet body, a front plate is mounted on the front side of the cabinet body, a mounting groove is formed in the front plate, a bottle head valve is mounted at the top of the tank body, and an electromagnetic valve is connected to the top of the bottle head valve. Through the arrangement of the spraying assembly, when a fire breaks out indoors, a rotary spraying head can automatically swing left and right in a reciprocating mode through impact force generated by heptafluoropropane gas, the spraying range is expanded through left-right reciprocating swing, and the coverage area of the heptafluoropropane gas is enlarged; and the problem that a local fire source cannot be covered due to injection in a fixed direction is avoided.

The invention discloses a cleaning device for plasma knife production, which belongs to the technical direction of plasma knife production. The device comprises a plasma knife cutting device, a first cleaning table and a second cleaning table. A first cleaning pipe is fixedly installed on the first cleaning table, and a second cleaning pipe is fixedly installed on the second cleaning table. The plasma knife cutting device is also provided with a cleaning box, a first water pipe, a first water pump, a first gear, a first paddle wheel, a second water pipe, a second water pump, a second gear, a second paddle wheel, a first motor, a third gear, a first fan, a second motor, a fourth gear and a second fan. Through the coordinated use of four groups of electric valves, the two groups of cleaning tables can be automatically flushed to different degrees to avoid metal debris rusting and adhering to the surfaces of the two groups of cleaning tables due to humidity in the workshop, thereby improving the cleaning efficiency, centrally collecting the waste liquid generated during deep cleaning, facilitating subsequent secondary utilization, reducing the cleaning cost of the factory and reducing the waste of resources.

The invention provides a rectangular coal ash storage cavern facilitating discharging, and relates to the field of rectangular large-reserve underground and semi-underground coal ash storage cavern discharging devices. A rectangular coal ash storage cavern facilitating discharging comprises a ground, a coal ash storage cavern body is arranged in the ground, a discharging groove is formed in the position, away from the coal ash storage cavern body, of the ground, an inflation box assembly is arranged in the coal ash storage cavern body, and the inflation box assembly comprises a protection shell, a transition bin, a gasification plate and a Roots blower. A first elevator is arranged in the discharging groove, a first outflow pipe is arranged at a discharging port of the coal ash storage cavern, the first outflow pipe is fixedly connected with a butterfly valve far away from the coal ash storage cavern, the butterfly valve is fixedly connected with a second outflow pipe far away from the first outflow pipe, and the second outflow pipe is communicated with a feeding port of the first elevator. The fly ash is fluidized by arranging the aeration tank assembly, so that the fly ash can flow out from the discharge port, the emptying rate of the fly ash in the rectangular fly ash warehouse can reach 95% or above, and the unloading condition is improved.

The utility model relates to the technical field of horizontal sliding windows, and discloses a horizontal sliding window with a folding gauze element, which comprises a frame body and a window frame, the gauze element is arranged between the front side of the frame body and the window frame, a glass sheet is fixedly arranged in the window frame, an adjusting mechanism is arranged outside the frame body, a positioning mechanism is arranged in the window frame, and the folding gauze element is arranged in the window frame. Through the arrangement of a first connecting rod, a second connecting rod, a mounting groove, a first connecting block and a second connecting block, moving work of the window frame and folding work of a gauze element are facilitated, indoor ventilation is facilitated, mosquitoes are blocked, a connecting rope moves along with forward movement of the window frame, and therefore rotating shafts can rotate conveniently; under the cooperation of the cleaning brush, the gauze can be cleaned conveniently, mosquitoes are prevented from being attached to the exterior of the gauze for a long time, the ventilation efficiency of the horizontal sliding window is guaranteed, and along with the backward movement of the window frame, under the cooperation of the torsional spring, the winding work of the connecting rope is facilitated.

The utility model relates to a mute air distributor and a ship ventilation system. The air distributor comprises a shell, a fluid inlet and a fluid outlet are formed in the shell, a silencing plate is arranged in the shell and is a curved plate, a plurality of silencing holes are formed in the silencing plate, and the plate face of the silencing plate is perpendicular to the flowing-out direction of fluid in the shell. Compared with the prior art, the noise reduction device is used for being connected with a ship air conditioner to adjust and reduce noise of outlet air of the ship air conditioner; in the using process, the air distributor is communicated with an air outlet of a ship air conditioner through the fluid inlet and communicated with outside air through the fluid outlet, air conditioner air enters the air distributor, passes through the silencing plate and then flows out of the air distributor, the curved plate is arranged on the plate face of the air distributor, the silencing holes are formed in the curved plate, noise generated by airflow is absorbed by the curved plate, and the noise is reduced. The airflow noise is effectively reduced; meanwhile, the plate face of the air distributor faces the flowing-out direction of the fluid, all air flows out through the silencing plate, and the noise reduction efficiency of the air distributor is guaranteed.

The utility model relates to the technical field of packaging shell, provide an electronic packaging shell of high -efficient heat dissipation, its including shell, first fin and second fin, the shell is sealed housing, is equipped with the interface on the lateral wall of shell, first fin is the flat plate, first fin is integrally formed on the top surface of shell in vertical form, first fin is equidistant evenly distributed on the top surface of shell, second fin is the air -permeable board, second fin horizontal arrangement integrally formed connection all first fin. The electronic packaging shell of high -efficient heat dissipation can guarantee the exchange efficiency of shell surface air, realizes stable and high -efficiently to complete heat dissipation.

The utility model relates to generator set protection equipment technical field, concretely relates to a construction generator set shell with fire prevention function, including base, top cover and side wall coaming, the side wall coaming is fixed on the base, and the top cover is buckled and is connected with the top of side wall coaming, the side wall coaming adopts double -deck composite structure, including the metal protection board and fire -retardant lining that set gradually from outside to inside, the metal protection board surface is coated with high -temperature -resistant anticorrosive coating, and the back of fire -retardant lining is connected through buckle and metal protection board up and down sliding insertion, the metal protection board inboard is equipped with the flow guide rib that abuts with the back of fire -retardant lining, be equipped with the guide slot that is matched with the buckle shape on the flow guide rib, and form the ventilation interlayer between adjacent flow guide rib, the top cover is composed of the extension plate of triangle and the cover plate of top inclination, be equipped with the radiating window on the extension plate, the radiating window inside integrates multilayer fire -retardant metal net.

The utility model relates to the technical field of central air conditioner noise reduction, and discloses a central air conditioner air outlet noise reduction device which comprises an outer frame body, a clamping groove is formed in the bottom end of the outer frame body, a shielding assembly is arranged on the inner wall of the clamping groove, and the shielding assembly comprises a shutter located on the inner wall of the clamping groove in a clamped mode. First fixing bolts are in threaded connection with the inner walls of the four corners of the bottom end of the shutter, the upper sides of the outer walls of the first fixing bolts are in threaded connection with the inner walls of the clamping grooves, an air guiding piece is clamped to the top end of the outer frame, an air outlet is fixedly connected to the bottom end of the air guiding piece, and a mounting shell is connected to the outer wall of the air outlet through a guiding assembly. And sound insulation cotton is fixedly connected to the inner wall of the mounting shell. The sound insulation cotton is shielded by the mounting shell and directly surrounds the outer wall of the air outlet, noise generated by the air outlet can be effectively absorbed, the sound insulation cotton does not make direct contact with the outside, the service life of the sound insulation cotton can be prolonged to the maximum extent, redundant space in the air outlet cannot be occupied, and the ventilation efficiency of the air outlet is kept.

The utility model relates to the technical field of cable tunnel ventilation, and provides an extra-high voltage long-distance cable tunnel ventilation system and a cable tunnel, the extra-high voltage long-distance cable tunnel ventilation system comprises a plurality of ventilation subsystems which are sequentially arranged along the length direction of the tunnel, a first firewall is arranged between two adjacent ventilation subsystems, and a second firewall is arranged between two adjacent ventilation subsystems. Each ventilation subsystem comprises an air feeder, an exhaust fan and n fireproof sections sequentially arranged in the tunnel in the length direction of the tunnel, n is an integer larger than or equal to 3 and smaller than or equal to 5, and every two adjacent fireproof sections in each ventilation subsystem are communicated through a normally-open fireproof door. The air feeder and the exhaust fan are arranged at the two ends of the tunnel section where the ventilation subsystem is located in the length direction correspondingly and communicate with the tunnel section and the outside correspondingly. The number of fans used is reduced, the construction difficulty is reduced, the construction cost is saved, and the economical efficiency and the reliability of cable tunnel ventilation can be both considered on the whole.

The utility model relates to the technical field of ventilators, and discloses an air volume adjustable gooseneck ventilator which comprises a ventilator body, the air inlet end of the ventilator body is connected with a sealing cover in a rotating mode, a clamping lock is installed on the ventilator body and can be connected with the sealing cover in a clamping mode, a cover plate set is connected into the ventilator body in a rotating mode, the cover plate set comprises a plurality of identical cover plates, and the cover plates are connected with the clamping lock in a clamping mode. The cover plates are fan-shaped, the cover plates can be spliced into a complete disc, the cover plate set can seal the air inlet end of the barrel, a plurality of electric push rods are rotationally installed in the barrel, and the output ends of the electric push rods are correspondingly and rotationally connected with the cover plates. And when the cover plate is opened, no shielding part exists, so that the ventilation efficiency is ensured while the ventilation quantity is adjusted.

The present invention discloses an online flue gas monitoring system, which relates to the technical field of flue gas monitoring, and includes a high temperature box and a bottom cabinet; a collection part, which is connected to the high temperature box and is used to collect flue gas under a specific environment, and the collection part includes a probe fixedly installed on the outside of the high temperature box, and the probe includes a shell, and a conduit is fixedly connected to the shell, and a sampling tube is fixedly connected to the conduit, and a dustproof component matched with the conduit is installed in the probe. The advantages are: the online flue gas monitoring system uses a backwashing method to flush and clean the entire gas path, making the cleaning of the gas path more convenient, and at the same time, it can reduce the content of dust entering the gas path during the inhalation detection process, ensure the single inhalation volume, reduce the frequency of recoil breathing, and improve the inhalation detection efficiency. In addition, the flue gas can be rotated to increase the contact area and contact time between the flue gas and the heating cylinder, thereby improving the flue gas heating efficiency.

The utility model discloses a kind of ventilation and air exchange devices in electric power well, it is related to electric power well field, to solve the problem of the internal air flow of existing technology in electric power well is not smooth, when electric power well is overhauled, technical personnel enters the internal electric power well and is easy to produce the problem of hypoxia condition.The air inlet upper end is provided with a supply air pipe, the middle part inside the supply air pipe is provided with a supply air fan, the supply air pipe upper end extends out of ground and is connected with a ventilation pipe, the air outlet upper end is provided with an air outlet pipe, the air outlet pipe upper end extends to ground and is fixedly connected with well lid fixing seat, the well lid fixing seat inside is provided with a support ring, the support ring inside upper end is fixedly provided with a ventilation net, by setting supply air fan and ventilation pipe forced air supply, cooperate air outlet pipe natural exhaust, form efficient air circulation system, effectively solve the hypoxia problem caused by ventilation in electric power well is not smooth, guarantee the safety of overhauling personnel operation.

The present invention discloses an airflow silencer and guide device for air power equipment, comprising a flow guide mechanism and a silencer mechanism, wherein the flow guide mechanism comprises a multi-stage flow guide silencer cone, a positioning bracket assembly, a protective cover and a docking flange, wherein the multi-stage flow guide silencer cone is stacked up and down and distributed in a gap-like manner, the positioning bracket assembly comprises a plurality of support rods and a connecting ring, the protective cover is arranged on the multi-stage flow guide silencer cone, the lower end of the docking flange is connected to the silencer mechanism, the silencer mechanism comprises a silencer body and a silencer cylinder, the silencer body is located inside the silencer cylinder, and a gap is provided between the silencer bodies, and the gap constitutes a ventilation duct; the airflow is poured into the inside of the protective cover from all sides through the ventilation holes on the protective cover, and after the airflow passes through the flow guide cone, an annular airflow is formed, and the airflow quickly enters the ventilation duct, and while the airflow passes through the ventilation duct, the noise is efficiently reduced by relying on the silencer cylinder and the silencer body constituting the two sides of the ventilation duct.

The invention relates to the technical field of connecting piece installation auxiliary pieces, in particular to an adjustable cabinet type centrifugal fan outer shell installation tool which comprises a connecting plate, an adjustable extending frame is fixed to the surface of the connecting plate and inserted into a connecting square pipe, and the connecting square pipe is fixed to the surface of a cabinet type centrifugal fan body. A sliding plate is fixed to the surface of the adjustable extension frame and slidably connected to the surface of the connecting square pipe, a mounting groove is formed in the surface of the sliding plate, a clamping block is inserted into the mounting groove, a rotary disc is rotationally connected into the mounting groove, and the rotary disc extrudes the clamping block to clamp the connecting square pipe; the beneficial effects are that through the design of the adjustable extension frame, the connection length can be flexibly adjusted according to the length of the external air pipe, no extra connecting piece or adapter is needed, the installation process is simplified, and the cost is reduced; and through a mutual limiting mechanism of the clamping blocks and the rotating disc, the stability of the mounting tool in the using process is ensured, and the situation of loosening or falling off is avoided.

The car roof safety protection system of the intelligent elevator comprises a car main body, a car roof safety protection device and a control device, the car roof safety protection device and the control device are both installed on the car main body, the car roof safety protection device is arranged at the top of the car main body, and the car roof safety protection device is arranged at the bottom of the car main body. The control device is electrically connected with the car roof safety protection device; the car roof safety protection device comprises an anti-collision mechanism, the anti-collision mechanism is arranged on the top of the car body, and the anti-collision mechanism is arranged on the outer surface of the top wall of the car body. According to the car roof safety protection system of the intelligent elevator, safety protection is conducted on the top of the car body through the car safety protection device, the anti-collision mechanism can serve as an energy absorption unit to conduct energy absorption on collision of the top of the car body, and therefore collision protection on the top of the car is achieved.

The utility model belongs to the field of bell-type furnaces, and particularly relates to a novel bell-type furnace coil base bottom plate damage prevention device which can effectively prolong the service life of a bottom plate while not influencing the airflow circulation amount in a furnace, and adopts the technical scheme that the novel bell-type furnace coil base bottom plate damage prevention device comprises a plate and a plurality of ventilation openings. Wherein the appearance of the plate is consistent with that of the tuyere of the coil base, and the plate is horizontally fixed in the tuyere of the coil base or at the end part of the tuyere of the coil base. The multiple ventilation openings are formed in the plate, and the diameter of each ventilation opening ranges from 150 mm to 800 mm. Wherein the ventilation quantity of the plurality of ventilation openings within 40 minutes is greater than the internal volume of the furnace body of the bell-type furnace.

This invention discloses a transmission gear shaft for a planting tray conveying system, belonging to the technical field of transportation equipment. It aims to solve the problems of noise generated by gear disk displacement under force and gear disk corrosion caused by condensation. The transmission gear shaft includes a central shaft, a first spacer, a second spacer, a gear disk, and a hollow shaft. The first and second spacers are fixed to the central shaft, which can limit the displacement of the gear disk under force and reduce noise. The first spacer, the second spacer, and the through holes on the gear disk are coaxial. The clearance fit between the hollow shaft and the central shaft forms an air duct. After the air duct is connected to a fan, it can accelerate the evaporation of condensation on the surface of the central shaft, prevent corrosion at the connection between the gear disk and the central shaft, extend the service life of components, and ensure the stable operation of the planting tray conveying system.

The invention discloses a swing arm type workpiece tray automatic exchange device and an exchange method thereof in the technical field of workpiece machine tool machining, and the swing arm type workpiece tray automatic exchange device comprises a base which is provided with a mounting rod; the bottom of the mounting rod is connected with a first rotating shaft through a bearing, the top of the mounting rod is connected with a second rotating shaft through a bearing, and the axis of the first rotating shaft and the axis of the second rotating shaft coincide. After a workpiece on the first tray is machined, a motor is started and drives a connecting shaft to rotate, so that the connecting shaft drives a driving gear to rotate clockwise, and then a left toothed bar can be driven to move backwards, a right toothed bar can be driven to move forwards, and a top driven gear drives a second rotating shaft to rotate clockwise; the bottom driven gear drives the first rotating shaft to rotate by the same angle anticlockwise, so that the first tray can rotate to a to-be-machined area after the height of the second tray is lowered through the electric push rod, and the second tray can be heightened through the electric push rod after rotating to a machining area.

An adjusting valve of the ventilation water tank comprises a front end tooth groove, a main body is a plate-shaped structure with a shaft and a valve tail end, and the circular plate-shaped structure with the shaft is matched with the cross section of a ventilation pipe in size. A ventilation pipe penetrates through the top of the water tank main body; a shell is fixed to one side face of the ventilation pipe, a front end tooth groove is formed in the shell, an adjusting handle is arranged outside the shell, and the adjusting handle is fixedly connected with the front end tooth groove. Bearing seats are fixed on the opposite side surfaces of the ventilation pipe, and are internally and rotatably connected with the valve tail end; a sliding groove is formed in the shell, a bolt is slidably connected into the sliding groove, and the front end of the bolt is inserted into the front end tooth groove to limit the rotation angle of the adjusting valve. A filter box is installed on the top of the ventilation pipe in a penetrating mode, an exhaust fan is arranged in the filter box, and a filter mechanism capable of being rapidly replaced is arranged above the exhaust fan. The ventilation requirements in different use scenes can be met by adjusting the rotating angle of the adjusting valve, the practicability and flexibility of ventilation of the water tank are improved, and the ventilation air volume can be accurately controlled.

The invention discloses a display cabinet, and relates to the technical field of display cabinets, and the display cabinet comprises a composite mechanism. According to the display cabinet, through the design of a composite mechanism, materials are placed in the composite shell for closed display, collision to the materials is avoided, dust entering is reduced, the output pipe is connected to the middle of the inner side of the composite shell, the draught fan is connected to the top of the output pipe, wind power is generated through the draught fan, and the interior of the composite shell is ventilated; on one hand, the heat dissipation effect is achieved, the interior is kept dry, on the other hand, internal dust is absorbed through wind power, so that the effect of cleaning the internal dust is achieved, wind power is generated through a draught fan to drive a rotating block to slide, the inner wall of a pipeline is rubbed through an annular block, dust accumulation is reduced, and the ventilation effect is prevented from being affected; the chip removal effect is improved through the grooves, impurity attachment is reduced, the friction effect is prevented from being affected, the surface stress area of the component is increased through the block face grooves, and the rotating friction effect is improved.

The utility model discloses a prefabricated foundation of power equipment ventilation, damp -proof reduces condensation, relates to power equipment technical field, mainly solves the problem of power equipment foundation ventilation damp -proof, including bearing platform, the prefabricated structure of bearing platform top and the power equipment of prefabricated structure top, the lateral surface of prefabricated structure and power equipment junction place symmetry has opened a plurality of air vents, and every air vent all is provided with filter screen and variable ventilation mechanism, and variable ventilation mechanism sets up in the inside of air vent, damp -proof condensing mechanism, horizontal fixed assembly in the inside wall of prefabricated structure.

The utility model relates to electric control cabinet technical field discloses a detachable combined electric control cabinet, including main part, the shell is set up to the main part outer wall, the dismounting subassembly is set up to the main part outer wall, the shell inside is seted up to the vent, the shell outer wall is provided with dustproof subassembly, dustproof screen is included to the dustproof subassembly, dustproof screen outer wall sets up in the shell outer wall, dustproof screen outer wall fixedly connected with guide post no.

The present invention discloses a biopharmaceutical detection device and method, belonging to the field of drug detection. A biopharmaceutical detection device includes a detection box and a microscopic detection camera fixed on the inner wall of the detection box, a detection table is rotatably connected in the detection box, a culture dish is plugged in the detection table, a medicine tank and a culture liquid tank are respectively fixedly connected on both sides of the top of the detection box, and the output pipes of the medicine tank and the culture liquid tank are both inserted through the detection box to extend above the culture dish, and also includes: an air cleaning component; the present invention filters the external fresh air flow, disinfects and purifies it through the rotation of the air guide blade, and then introduces it into the detection box, so that the detection box is in a sterile state, reducing the impact of the unqualified gas environment on the detection result, and effectively improving the detection accuracy; and the repulsion between the second magnetic plate and the first magnetic plate is used to make the dust filter net vibrate, and the dust impurities attached to it are shaken off, thereby improving the filtering effect and ensuring the ventilation efficiency.

The utility model relates to the field of ventilators, in particular to an anti-bird device for a downslope ventilator and the downslope ventilator with the anti-bird device. The anti-bird device is mounted on the ventilator framework; the anti-bird device comprises an anti-bird mechanism arranged on the ventilator framework, and the anti-bird mechanism comprises an anti-bird net arranged on the lateral ventilation opening; each anti-bird net comprises a plurality of single nets arranged on the ventilator framework; each single net comprises a net body frame, and a steel net layer is arranged on the net body frame; through the arrangement of the bird preventing device, the ventilation efficiency can be guaranteed, meanwhile, birds can be effectively prevented from entering the ventilator, the birds are prevented from nesting, inhabiting and excreting in the ventilator, and damage to the ventilator and the internal structure of a roof is reduced; the anti-bird net disclosed by the utility model is formed by splicing a plurality of single nets, so that the problem that a traditional integral anti-bird net is easy to interfere with a ventilator framework during installation can be reduced or avoided.

The invention belongs to the technical field of air conditioner energy-saving adjusting devices, and discloses a cloud computing data center precise air conditioner energy-saving adjusting device and a using method thereof.The cloud computing data center precise air conditioner energy-saving adjusting device comprises a device body, a filter screen is installed in the device body, and a cleaning assembly is arranged on the outer wall of the filter screen and comprises a cleaning box arranged on the outer wall of the filter screen; a spraying assembly and a recycling assembly are arranged in the cleaning box, when the filter screen needs to be cleaned, a motor is started, the motor is started to drive a threaded rod to rotate, the threaded rod rotates to drive a moving block to move, the moving block moves to drive the cleaning box to move, the cleaning box moves to drive a brush plate to move, and the brush plate moves to drive bristles to move; and in the moving process, the surface of the filter screen is cleaned through the bristles, impurities on the surface of the filter screen can be brushed off, the ventilation efficiency of an air conditioner system is ensured, air conditioner energy consumption is indirectly reduced, and the energy-saving effect is achieved.

The utility model discloses a remote control device for an intelligent flat car, which relates to the technical field of intelligent flat car control, and comprises a box body and a protection assembly, a remote control device main body is arranged at the lower part in the box body, the protection assembly is arranged on the surface of a back plate, and the output end of a positive and negative rotation motor is connected with a driving shaft. A second half gear is connected to the right side of the first half gear, a first connecting rod and a third connecting rod are connected to the exteriors of the driving shaft and the transmission shaft, a fixing plate is connected to the other end of the second connecting rod through a rotating shaft, a mounting base is fixed to the middle of the lower portion of the surface of the fixing plate, and a temperature sensor is mounted on the right side of the mounting base; the top end of the third connecting rod is connected with a box cover through a rotating shaft. According to the remote control device of the intelligent flat car, when the filter screen moves downwards along with the fixing plate, the swing rod can drive the brush head to be tightly attached to the filter screen under the resilience assistance of the reset spring, then the brush head slides along the surface of the filter screen to brush off dust at meshes, and the ventilation efficiency of the filter screen is guaranteed.

The utility model discloses a functional equipment stage auxiliary device, which relates to the technical field of functional equipment stage auxiliary, and comprises a mounting seat fixedly mounted on the outer wall of the bottom of a device body, a dust removal mechanism and a height adjusting mechanism arranged below the mounting seat, and a control panel is arranged at the upper part of the front edge of the device body. A plurality of evenly-distributed heat dissipation openings are formed in the upper portion of one side of the device body, and the dust removal mechanism comprises a dust suction box, a drawer, a dust filtering net, a fan support, a dust suction fan, a first dust suction hood and a second dust suction hood. The control panel is provided with the dust removal mechanism, so that dust on the control panel can be conveniently and quickly removed, operators can conveniently use the control panel, dust attached to a heat dissipation opening area can be conveniently and quickly removed, the ventilation efficiency of the heat dissipation opening area is guaranteed, the heat dissipation effect is guaranteed, and normal use of the device is facilitated; and the height adjusting mechanism is arranged, so that individual requirements of different places and different equipment on the height of the device can be met.

The utility model discloses a kind of finned tube heat transfer enhancement structure for waste heat recovery device, it is related to finned tube technical field, including heat exchange bin, the inside fixed mounting of heat exchange bin has finned tube main body, finned tube main body includes liquid conduit and several radiating fins, the inside of radiating fin is equipped with several through holes, liquid conduit is sequentially penetrated in the through hole of several radiating fins inside, the side of heat exchange bin inner wall is fixedly connected with several airflow baffles in linear arrangement mode, one end of several airflow baffles is respectively arranged between two adjacent radiating fins.The utility model changes the flow direction of high-temperature gas by the setting of airflow baffle, forms turbulent flow, reduces flow rate, prolongs the residence time of airflow, promotes gas and radiating fin to contact fully, enhances the convection heat transfer of this finned tube.