129results about How to "Slow down the flow" patented technology

The invention discloses a supporting and backfilling device and method for the suspended position of a submarine pipeline, and belongs to the technical field of submarine facility protection.The method comprises the steps that firstly, a plurality of supporting and backfilling unit pieces are arranged in the longitudinal direction of the submarine pipeline, and each supporting and backfilling unit piece is arranged at the suspended position of the submarine pipeline; wherein the annular pipeline wrapping cylinder wraps the outer wall of the submarine pipeline, the left supporting plate and the right supporting plate are arranged at the two ends of the upper portion of the lower annular wrapping part correspondingly, and the submarine pipeline at the suspended position of the submarine pipeline is supported; and 2, in the longitudinal flowing process of the sand flow along the submarine pipeline, the sand flow is blocked by an upper quicksand fan-shaped baffle and a lower quicksand fan-shaped baffle, the sand flow flows to a left supporting plate and a right supporting plate along the upper quicksand fan-shaped baffle and the lower quicksand fan-shaped baffle, and finally the sand flow is dredged to the suspended position of the submarine pipeline below the submarine pipeline through sand guide holes, and backfilling is achieved.

The utility model discloses a decompression electromagnetic valve device which comprises a valve body and a valve and is characterized by further comprising a fixing ring, installation rings are fixedly arranged on the inner walls of connecting pipelines, located on the two sides of the valve, of the valve body, an inserting groove is formed in each installation ring, and an inserting block used for being inserted into the inserting groove to fix the fixing ring is fixedly arranged on the end face of the fixing ring. A buffer frame is fixedly arranged on the inner wall of the fixing ring, a plurality of drainage grooves are formed in the side wall of the buffer frame in a penetrating mode and evenly formed along the outer wall of the buffer frame, a buffer disc is slidably arranged in the buffer frame, and buffer springs fixedly connected with the bottom of the buffer frame are fixedly arranged at the end, close to the bottom of the buffer frame, of the buffer disc and evenly arranged along the end face of the buffer disc; the buffer disc is matched with the buffer spring to buffer water flow firstly, the water flow is drained through the drainage groove after being buffered and then makes contact with a gateway opening, therefore, the water flow cannot directly impact the gateway opening to cause noise, and the fixing ring is detachable and convenient to replace.

The invention relates to the technical field of brazing materials, in particular to brazing filler metal and a preparation method and application thereof. The solid state of the brazing filler metal is in a sandwich foil shape, the brazing filler metal comprises a foil-shaped brazing filler metal core and an aluminum foil layer wrapping the peripheral side of the brazing filler metal core, and the brazing filler metal core contains Sr and foamed aluminum particles. The preparation method comprises the following steps: S1, melting a required amount of aluminum foil layer raw material into molten metal, and casting to obtain a hollow plate-shaped aluminum frame body with openings at two ends; s2, a required amount of brazing filler metal metal core raw material is heated to prepare a metal suspension containing solid foamed aluminum particles, the metal suspension is injected into the aluminum frame body, and a composite metal plate is obtained after cooling; and S3, the composite metal plate is subjected to multi-pass rough rolling and finish rolling, and the sandwich foil-shaped brazing filler metal is obtained. The brazing filler metal structure and the formula components are optimized and improved, brazing filler metal loss and brazing filler metal liquid turbulence during brazing can be restrained, and the shear strength of a brazed joint is improved.

The utility model discloses an injection mold for producing a display panel. The injection mold comprises a top plate, a pouring nozzle, an upper mold plate, a lower mold plate, a bottom plate, an ejector pin mechanism and an ejector pin plate, a mold cavity insert is arranged at the bottom of the upper mold plate, a mold core insert is arranged at the top of the lower mold plate, and two symmetrically arranged molding holes are formed between the mold cavity insert and the mold core insert. According to the utility model, the two symmetrically arranged molding holes are arranged in the injection mold, so that the injection mold can simultaneously produce two curved-surface display panels during one-time mold opening and closing, and the production efficiency is high; meanwhile, the cross section of the mold core insert is of a V-shaped structure, and the middle part of the mold core insert is provided with the pouring channel for communicating the two forming holes, so that the molten plastic raw material can be uniformly conveyed and filled in the forming holes, and the mold core insert of the V-shaped structure can increase the flowing resistance of the plastic raw material so as to slow down the flowing speed of the plastic raw material; therefore, bubbles are reduced, and the product quality is improved.

This utility model relates to the field of pipeline technology, specifically to a compressor venting and noise reduction pipeline and its noise reduction system. The compressor venting and noise reduction pipeline includes: an exhaust pipeline, a bend downstream of the exhaust pipeline, a branch pipeline downstream of the bend, an output pipeline downstream of the branch pipeline, and a silencer downstream of the output pipeline. The silencer includes a spiral flow guiding device. This utility model reduces the velocity of the medium flow by using the bend, branch pipeline, and silencer, consuming part of the kinetic energy of the medium flow, thereby reducing the noise generated by the medium colliding with the pipe wall during discharge and reducing the safety risks to on-site personnel.

This utility model discloses a jet pump propulsion device, comprising: a pump casing having a water inlet section with a water inlet hole; a drive assembly including an impeller and a power component for rotating the impeller, the impeller being rotatably disposed inside the pump casing; and a guide section located within the water inlet section, the guide section having a guide surface on the side near the impeller for guiding external water flow towards the impeller, the guide surface opposite the water inlet hole, and the guide surface forming a guide channel with the inner wall of the water inlet section, the cross-section of the guide channel gradually increasing in the direction close to the impeller. This utility model can reduce shaking and vibration during propulsion, improving the smoothness of propulsion.

The invention relates to the technical field of laser scanning, in particular to vehicle-mounted laser scanning equipment which comprises an optical scanning module and further comprises a windshield, a shell, a rotating rod, a fan, an air inducing assembly, a mounting plate, a transmission assembly and a mark removing assembly. The shell is connected with the upper end of the outer surface of the light scanning module, the rotating rod is connected to the rear side of the central axis of the windshield, the fan is connected to the upper end of the rotating rod, the air inducing assembly is connected to the upper end of the light scanning module, the mounting plate is connected to the lower end of the windshield, and the transmission assembly is connected with the lower end of the rotating rod. According to the light scanning module, the area, located at the front end of the light scanning module, of the windshield is continuously replaced by rotating the windshield, and the purpose of guaranteeing the detection accuracy of the light scanning module is achieved.

The invention relates to the technical field of medical instruments, and discloses an enemator for preventing enema reflux, which comprises an enema bag, a catheter and an anal tube, the catheter is connected to the bottom of the enema bag, the bottom end of the catheter is fixedly provided with a cannula assembly, the open end of the anal tube is fixedly provided with a cannula assembly, the cannula assembly is in threaded connection with the cannula assembly, and the cannula assembly is fixedly connected with the anal tube. The bottom end of the anal tube is sealed, drainage holes are formed in the circumferential face of the bottom end of the anal tube in an array penetrating mode, and an anti-backflow assembly is fixedly installed in the upper half portion of the anal tube. The clysis liquid flows from right to left along the square channel, after the clysis liquid is divided by the V-shaped end of the flow guide block, one part of the liquid continues to flow along the square channel, the other part of the liquid penetrates through the U-shaped groove to flow, the flowing direction of the liquid is changed after the liquid passes through the U-shaped groove, convection is generated between the liquid and the liquid in the square channel, and therefore the flowing speed of the liquid in the square channel is slowed down. Therefore, the purpose of preventing the enema liquid from flowing back to the inside of the enemator is achieved.

The invention discloses a ventilation device for preventing oil liquid in a bearing box from dripping outwards, which comprises a shell with an inner cavity, a cavity partition plate with a first gas discharge through hole is arranged in the shell, and the cavity partition plate divides the inner cavity of the shell into a gas discharge cavity and an oil mist filtering cavity which are communicated up and down; an oil mist filtering mechanism forming a spiral oil mist filtering channel is arranged in the oil mist filtering cavity, an oil mist leading-in mechanism and a lubricating oil recycling mechanism are arranged at the lower end of the shell, and the spiral oil mist filtering channel is communicated with the bearing box through the oil mist leading-in mechanism and the lubricating oil recycling mechanism; and a second gas discharge through hole communicated with the outside is formed in the side wall of the gas discharge cavity. The motor bearing box can effectively solve the problems that oil mist escapes outwards and oil drips outwards, consumption of lubricating oil is reduced, and meanwhile the motor bearing box has the advantages of being exquisite in structure and free of cooperation of an external power source.

The invention discloses a semiconductor structure and a manufacturing method thereof, a radio frequency device and electronic equipment, and aims to solve the problem of low rollback efficiency. The active region structure is arranged on a substrate, the active region structure comprises a barrier layer and a channel layer which are arranged in a stacked mode, electrode layers are arranged on the active region structure in a stacked mode, electrodes comprise a first electrode and a second electrode which are arranged in a spaced mode, and the first electrode and the second electrode are both connected with the barrier layer; wherein the width of the interface of the channel layer and the barrier layer in the direction parallel to the current is gradually reduced in the direction perpendicular to the current direction, and the flowing speed of electrons is gradually increased along with the reduction of the width of the interface in a conducting state, so that the electrons can reach the saturation drift speed more quickly, and the saturation current is further achieved; the knee point voltage is reduced, and the rollback efficiency of the semiconductor structure is improved.

The utility model discloses a combined device for buffering and conveying waste liquid of semiconductor equipment, which is applied to the field of product manufacturing in the semiconductor industry and is used for blocking the waste liquid through a fixed disc, so that the waste liquid flows into a channel between a mounting cover and the fixed disc through a through hole; after impurities in the waste liquid are filtered through the filtering cotton sleeve, the mounting cover is opened, and no shielding object is arranged on the periphery of the filtering cotton sleeve, so that the impurities are relatively convenient to scrape, the impurities in the pipeline are convenient to clean, and the practicability is improved; when waste liquid flows on the surfaces of the first spiral disc and the second spiral disc, the first spiral disc and the second spiral disc block the waste liquid, so that the flowing directions of the waste liquid are opposite, the flowing speed of the waste liquid is buffered, damage to a pipeline is reduced, and the service life of the pipeline is prolonged.

The utility model discloses a fine-grade tailing dehydration device for lead ore processing, which relates to the technical field of tailing dehydration, and comprises a plurality of sedimentation tanks which are communicated with one another, drainage gates are arranged among the sedimentation tanks, and the drainage gates can adjust the height of flowing water between the adjacent sedimentation tanks. The sedimentation tank located at the tail end is communicated with a dehydration device through a water pipe, a water throwing tank is rotationally arranged in the dehydration device, the peripheral side of the water throwing tank is of a latticed double-layer structure, and the double-layer structure of the water throwing tank is filled with a filter element of an annular structure. According to the fine-grade tailing dewatering device for lead ore processing, the dewatering device is arranged, water passing through the sedimentation tank flows into the dewatering device, the water is thrown out after being blocked by the filter element through rotation of the water throwing tank, and tailings are left to be stored in the water throwing tank, so that the water content in the tailings is reduced; and the water can also be poured into the dehydration device to be dehydrated again.

The utility model discloses a reinforced conduction cold plate, and relates to the technical field of heat dissipation cold plates. The liquid cooling module comprises a substrate body, and further comprises liquid cooling pipes which are uniformly arranged on the upper end face of the substrate body in an S shape, and a reinforcing mechanism is fixed on the upper end face of the substrate body; the branch guide pipes are arranged at the upper ends of the liquid cooling pipes, spiral pipes are fixed to one ends of the branch guide pipes and distributed along the outer surfaces of the liquid cooling pipes, and the tail ends of the spiral pipes are connected with drainage pipes. According to the utility model, cooling liquid can be divided and guided through the arranged branch guide pipes and circulates through the spiral pipe, so that the flowing speed of the cooling liquid can be delayed, and the liquid cooling pipe and the spiral pipe can be ensured to be in full contact with a battery for heat dissipation, thereby ensuring the refrigeration effect of equipment; and meanwhile, the vibration effect of the cooling liquid in the liquid cooling pipe during flowing can be relieved through branch guiding of the branch guiding pipes, the liquid cooling pipe and the branch guiding pipes can be further reinforced through the arranged reinforcing plates, and then the stability of the conduction cold plate during working can be guaranteed.

The utility model discloses a gas-water separation device for a furfural production line, which comprises a separation box, the bottom of the separation box is communicated with a gas inlet pipe, and the top of the separation box is communicated with a gas outlet pipe through a formed gas outlet; wave-shaped water diversion plates for guiding the flow direction of gas and absorbing water in the gas at the same time are mounted in the separation box in an up-down staggered manner; a fan for blowing off water vapor on the water diversion plate is mounted at the top end in the separation box; a water outlet for discharging water vapor is formed in the bottom of the separation box; according to the device, the flow velocity of aldehyde-water azeotrope in the separation box is slowed down by arranging a plurality of wave-shaped water diversion plates in a vertically staggered manner, so that water vapor is adsorbed on the water diversion plates, and meanwhile, the drying assembly is arranged at the water inlet pipe to ensure that the water vapor discharged along with aldehyde gas can be adsorbed in a drying agent, so that water in the aldehyde gas is effectively removed, and the quality of the aldehyde-water azeotrope is improved. And the quality of the finally produced furfural product is ensured.

The utility model relates to desulfurizing tower technical field discloses a kind of wet flue gas desulfurization tower, including tower body, desulfurization component and be used for the spray of the spray component to desulfurization component, tower body is equipped with air inlet and air outlet, desulfurization component is arranged in tower body, desulfurization component includes sieve plate and multiple baffle, the outer periphery of sieve plate is connected with the inner wall of tower body, multiple baffle is spacedly installed at the top of sieve plate, form pass-through smoke channel between adjacent two baffle, baffle is corrugated plate, two side walls of pass-through smoke channel respectively are equipped with a group of baffle, two groups of baffle in pass-through smoke channel are staggered arrangement in the direction of smoke flow, pass-through smoke channel is filled with filler;The utility model cooperates through serpentine pass-through smoke channel and baffle, reduce the flow speed of flue gas and treatment solution, prolong residence time, to improve the reaction length of flue gas and treatment solution, improve desulfurization efficiency.

The invention discloses a kiln body structure for polluted soil thermal desorption remediation, and belongs to the technical field of polluted soil treatment. Comprising an inner-layer barrel, the outer side of the inner-layer barrel is sleeved with an outer-layer barrel, a plurality of supporting assemblies are arranged between the inner-layer barrel and the outer-layer barrel, the supporting assemblies are used for connecting the inner-layer barrel and the outer-layer barrel, and the supporting assemblies are evenly distributed in the length direction of the inner-layer barrel. Each supporting assembly comprises four supporting blocks, the four supporting blocks are evenly arranged in the circumferential direction of the inner-layer barrel, every two adjacent supporting assemblies are staggered by 45 degrees in the circumferential direction, and the arc length of one supporting block is larger than one eighth of the perimeter of the inner surface of the outer-layer barrel and smaller than one fourth of the perimeter of the inner surface of the outer-layer barrel. According to the technical scheme, the problems that in the prior art, a rotary kiln is single in function and inconvenient to use for thermal desorption of contaminated soil are solved.

This utility model discloses a flue assembly and a gas water heater, relating to the field of water heater technology. The flue assembly has independent exhaust channels and air channels. The exhaust channel is configured to communicate with the exhaust port of the gas water heater, and the air channel is configured to communicate with the air inlet of the gas water heater. The air channel has at least a first channel section, through which air flowing through the first channel section can exchange heat with the flue gas in the exhaust channel. A baffle is provided within the first channel section. This utility model's technical solution can prevent or significantly reduce the generation of condensate in gas water heaters.

This utility model discloses a scale inhibition mechanism and a water outlet device with the scale inhibition mechanism. The scale inhibition mechanism includes: a support; a slow-release cylinder for storing scale inhibitor, the slow-release cylinder having several slow-release holes, and the slow-release cylinder being connected to the support; a movable member having a cavity, one end of which is open as a first port, the slow-release cylinder extending into the cavity through the first port, the movable member being movable relative to the support between a first position and a second position; an elastic member applying an elastic force to the movable member to move it to the second position; the movable member and the support are used to control whether the slow-release cylinder releases the slow-release liquid. Since the scale inhibition mechanism only releases the scale inhibitor when the water flow in the water outlet device is still, it slows down the flow rate of water and scale inhibitor through the slow-release holes, reduces the dissolution rate of the scale inhibitor, and slows down the consumption of the scale inhibitor.

The utility model relates to an integrated adhesive film, and relates to the technical field of photovoltaic cells. The integrated adhesive film comprises a substrate film layer, a first adhesive layer and a second adhesive layer, wherein the substrate film layer is an adhesive film; the integrated adhesive film comprises a substrate film layer and a bearing film layer, the bearing film layer is a pre-crosslinking film, and the substrate film layer and the bearing film layer are compounded into the integrated adhesive film. The bearing film layer and the substrate film layer are compounded into a whole, so that the flowing speed of the integrated adhesive film is delayed, and the integrated adhesive film is prevented from flowing into a gap between the welding strip and a battery piece when the welding strip is pressed.

The present invention discloses a spraying waste gas treatment equipment, which belongs to the technical field of spraying waste gas treatment, including an equipment box, a spray unit is installed on the equipment box, an exhaust unit is installed on one side of the equipment box, a central axis mechanism is installed in the equipment box, and an air intake control unit is installed on the central axis mechanism; through the central axis mechanism, the air intake control unit and the adsorption unit, the reciprocating screw is driven by a motor to control the left and right movement of the air intake frame, and the air guide is opened and closed to adjust the air flow speed during the process, and the filter plate is cooperated to initially filter large particles. When the air intake frame moves, it scrapes the inner wall of the pipeline and collects particulate matter to the second receiving box. At the same time, the extension plate contacts the filter plate to clean the surface particles, and the rotation breaks up the gas to promote uniform distribution. The reciprocating screw also drives the fan blades to slow down the airflow, prolonging the residence time of the exhaust gas to optimize the treatment effect. In addition, the driving gear drives the activated carbon plate to rotate and revolve, and the activated carbon plate is kept clean in combination with the cleaning component to improve the adsorption efficiency.

The utility model discloses a comprehensive filter element with a water-saving function. The comprehensive filter element comprises a filter piece, a filter element body and a water passing sleeve piece, the filtering piece is arranged on the filter element body, the filter element body is provided with a water passing cavity, the water passing cavity is provided with an open end and a closed end, the water passing sleeve piece is detachably arranged at the open end of the water passing cavity, and a plurality of water passing holes communicated with the water passing cavity are formed in the water passing sleeve piece; the shower head handle is provided with a water inlet connector and a water passing channel communicated with the water inlet connector, the filter element is inserted into the water passing channel from the water inlet connector, a water passing sleeve piece of the filter element is connected to the water inlet connector in a clamped mode, and a plurality of flow passing holes communicated with the water passing cavity and the water passing channel are formed in a filter element body. The connector of the water inlet hose abuts against the water passing suite and is in sealing connection with the water inlet connector in a detachable mode, and water enters the water inlet hose through the water inlet connector and provides filtered water for the shower head handle through the filter element and the water passing channel. The utility model can play a water-saving role, improve the filtering effect, simplify the assembly and disassembly process and reduce the processing cost.

This utility model provides a diffuser accessory head for a hair dryer, including a detachably connected outer shell and an inner shell, which enclose a wind cavity. The outer shell has an air inlet communicating with the wind cavity, and the inner shell has several outwardly extending air guide columns with first air outlets on them. The inner shell also has several second air outlets arranged in a ring array, both of which communicate with the wind cavity. A flow guide is provided at the air inlet within the wind cavity. The flow guide includes several arc-shaped flow guide vanes, each arranged in a spiral pattern, causing the airflow to diffuse spirally within the wind cavity. This not only ensures uniform airflow through the first and second air outlets but also slows down the airflow, facilitating heat concentration within the wind cavity and maintaining a consistently hot state. This allows for more efficient and effective heat utilization, improving styling efficiency and results, and providing a better user experience.

The utility model relates to an electronic atomization device. The electronic atomization device comprises a shell and an atomization mechanism. The shell is provided with a containing cavity, and a liquid storage bin used for storing an aerosol generating product is arranged in the containing cavity; the atomization mechanism is arranged in the containing cavity and communicates with the liquid storage bin, the atomization mechanism comprises an atomization assembly and a buffer assembly, and the buffer assembly is arranged between the liquid storage bin and the atomization assembly and at least used for reducing the flowing speed of the aerosol generating product. The electronic atomization device can prevent the aerosol generating product from leaking from the atomization core.

The invention relates to the field of dehumidification fillers, and discloses a honeycomb filler suitable for an inner-cooling dehumidifier, which is of a honeycomb structure formed by enclosing an arc-shaped plate, a partition plate, a first air cylinder and a second air cylinder and comprising a first vertical cavity, a first annular cavity, a second vertical cavity and a second annular cavity, a coolant flowing path fully covers the outer walls of the first air cylinder and the second air cylinder through which gas passes, the heat exchange effect of the coolant and the dehumidification solution is improved, the temperature of the dehumidification solution is reduced, and the moisture absorption capacity of the dehumidification solution is improved; meanwhile, through hydrophilic coatings sprayed on the upper half parts of the inner walls of the first air cylinder and the second air cylinder and hydrophobic materials sprayed on the lower half parts of the inner walls, when the dehumidification solution flows through the upper half parts of the inner walls of the first air cylinder and the second air cylinder, the dehumidification solution is fully dispersed and spread, and the flowing speed of the dehumidification solution is reduced; the contact area and contact time of the reaction gas and the dehumidification solution are increased, and the moisture absorption effect of the dehumidification solution is improved.

This utility model relates to the field of printed circuit board technology and discloses an inner layer edge structure of a circuit board, including: a first edge plate body disposed around the substrate body; a plurality of first flow-blocking beads equidistantly arranged on one or both sides of the edge plate body; and a plurality of second flow-blocking beads equidistantly arranged on one or both sides of the first flow-blocking beads, wherein the protruding area of ​​the second flow-blocking beads is larger than that of the first flow-blocking beads, and a first adhesive flow groove is formed between the first flow-blocking beads and the second flow-blocking beads to accommodate the flow of adhesive. This design can not only significantly reduce the flow velocity of the fluid and effectively prevent it from flowing outside the circuit board, thereby avoiding the problem of insufficient adhesive filling of the board pattern, but also the first adhesive flow grooves of different widths formed between the first and second flow-blocking beads of different sizes are interleaved, which can timely and evenly spread the adhesive of the insulating layer along the first adhesive flow groove, thereby ensuring uniform adhesive filling and reducing the probability of defective products.

The utility model discloses a magnesium alloy electromagnetic induction heating melting furnace which comprises a supporting base fixed to the ground through bolts, left and right symmetrical installation frames are fixedly installed on the upper surface of the supporting base, a melting furnace shell is rotatably installed between the left and right installation frames, and a sealing upper cover is rotatably installed on the upper surface of the melting furnace shell. A crucible inner container used for melting a magnesium alloy material is fixedly installed in the middle of the interior of the melting furnace shell, an electromagnetic induction coil is attached to and wound around the outer surface of the crucible inner container, and a heat preservation pad is fixedly installed on the outer surface of the crucible inner container. According to the magnesium alloy electromagnetic induction heating melting furnace, the novel structural design is adopted, waste gas generated in the magnesium alloy melting process enters the purification box through the pressure relief pipe, harmful substances in the waste gas are filtered and purified through the filter cotton in the purification box, and therefore the situation that the waste gas is directly discharged to pollute the surrounding environment is avoided.

The utility model relates to the technical field of plastic products, and discloses a chamfering device for plastic products, which comprises a shell and a positioning mechanism mounted on one side of an inner cavity of the shell, and further comprises a hydraulic cylinder mounted on the other side of the inner cavity of the shell, an output shaft of the hydraulic cylinder is fixedly connected with a mounting frame, a knife rest is arranged at the top of the mounting frame, and a chamfering device is arranged on the knife rest. An adjusting mechanism is mounted at the bottom of the knife rest; under the cooperation of the tool rest, the adjusting mechanism and the limiting mechanism, the tool rest can be conveniently adjusted, a worker can conveniently select a proper tool, auxiliary tools are not needed when the tool rest is adjusted, the applicability of the device is improved, and meanwhile under the cooperation of the guide shell and the installation shell, the tool rest can be conveniently adjusted. According to the waste chip collecting device, the collecting box can conveniently collect waste chips, the waste chips cannot move along with air under the cooperation of the air outlet groove, and the problems that when an existing device is used, a cutter is inconvenient to replace, and the waste chip collecting effect is poor are solved.

The utility model provides a finished product particle drum screen, which relates to the technical field of drum screens and comprises a drum screen provided with a plurality of sections of screen meshes with different apertures, a drum screen driving component is mounted at the bottom of the drum screen, and a base component is arranged on the bottom surface of the drum screen driving component. An angle adjusting assembly used in cooperation with the drum screen driving assembly is installed on the base assembly, and a conveying assembly is installed at the bottom of the base assembly. When the continuous feeding amount of materials is large, the overall inclination angle of the rotary screen is driven to be reduced through the angle adjusting assembly, the flowing speed of the materials from the feeding end to the discharging end of the rotary screen is slowed down, the flowing speed of the materials is driven to be maintained at the normal level again by increasing the rotating speed of the driving motor, and then the screening precision is guaranteed; on the contrary, the inclination angle of the drum screen can be increased through the angle adjusting assembly, the rotating speed of the driving motor is reduced to screen the materials, and then the working load of the driving motor is reduced.

The utility model relates to the technical field of oxygen production, in particular to a low-oxygen pre-adaptation oxygen generator which comprises a device body, a secondary purification mechanism is fixedly connected to the top of the device body, and heat insulation baffles are fixedly connected to the two sides of an inner cavity of the device body. Through the cooperation of the box body, the heat conducting plate, the heat conducting fins, the blocking plates and the temperature sensor, the waste heat recovery function is achieved, when compressed air passes through, the blocking plates staggered on the two sides can slow down the flowing speed of air, heat contained in the air can be conducted to the heat conducting fins inserted into the box body through the heat conducting plate, and the heat conducting effect is achieved. The heat conduction fins emit heat to transmit heat to water in the box body, the temperature sensor monitors the temperature of the water in real time, the mechanism can recycle the heat generated by gas compression, the cooling effect is achieved to a certain degree, a cooling device is omitted, heat waste is avoided, and environmental protection and energy saving are achieved.

The application discloses an oil film damper damping structure, which comprises a bearing, a support seat and an adjusting structure, wherein the bearing comprises a bearing outer ring and a bearing inner ring, the bearing inner ring is suitable for being connected with a rotor; the inner ring of the support seat is coaxially arranged with the bearing outer ring to enclose an oil film cavity suitable for containing lubricating oil; the adjusting structure is fixedly arranged in the oil film cavity, and the adjusting structure is fixed on the bearing outer ring or the inner ring of the support seat; the adjusting structure comprises a flow control part, the flow control part comprises a streamlined surface and a flow resistance plane which are connected with each other, and the streamlined surface and the flow resistance plane are used for controlling the flow speed of the lubricating oil; the friction coefficient of the flow resistance plane is greater than that of the streamlined surface. The structure plays a damping role under the action of the friction resistance and the pressure difference resistance of the lubricating oil on the adjusting structure, the control effect of the oil film extrusion flow is strengthened, and the use and application range of the extrusion oil film damper are increased.