51results about How to "Change flow path" patented technology

The invention relates to a switching control valve for the state of an aircraft cargo compartment fire extinguishing system, and the switching control valve is particularly suitable for serving as a diversion element of extinguishing agents in an aircraft cargo compartment fire extinguishing pipeline. A flow control device comprises a valve body (1), a high-speed inlet (2) and a low-speed inlet (3), wherein a sliding type valve element (4), a valve cavity (5), a valve base (6) and an elastic force control switch (7) are arranged in the valve body, a slider (8) is arranged on the periphery of the sliding type valve element (4), a conical-angle face (9) is arranged at one end, close to the low-speed inlet (3), of the valve base (6), and a drying filtering cavity (10) and a throttling cavity (11) are formed in the valve cavity (5). The switching control valve meets different flow speed requirements and different requirements for extinguishing agents when fire happens to an aircraft, the using number of pipelines in the aircraft is reduced, the stability and the high efficiency of the fire extinguishing system of the aircraft are guaranteed, water, solid particles and other impurities in the extinguishing agents can be removed, and icing and blocking are avoided.

The invention discloses a regional cooperative reinforced fluidized bed heater. The regional cooperative reinforced fluidized bed heater comprises a shell, wherein a catalyst inlet is formed in the upper part of the shell, the interior of the shell is divided into a catalyst inlet influence area, a dilute phase area, a dense phase area and a gas distributor influence area, a catalyst inlet inclined pipe is arranged at the catalyst inlet upwards in an inclined mode, a regional particle distributor is arranged at the catalyst inlet in the catalyst inlet inclined pipe, a plurality of dense phasedeflectors are arranged in the dense phase area, a plurality of dilute phase deflectors are arranged in the dilute phase area, and double gas distributors are arranged in the gas distributor influencearea. According to the regional cooperative reinforced fluidized bed heater, the problems of low internal stability of the fluidized bed heater due to wear and erosion of inlet catalysts to heat exchange bundles and low heat exchange efficiency caused by the limitation of improvement of heat exchange efficiency due to partial regional reinforcement are preferably solved at the same time, so thatthe stable and efficient operation of the fluidized bed heater is realized.

The invention discloses a cyclone separator with a gradually enlarged inlet, a flow guide plate and a dustproof screen and an experiment system, and belongs to the technical field of gas-solid heterogeneous separation. The inlet of the cyclone separator is the gradually enlarged inlet which is internally provided with two flow guide plates, including a primary flow guide plate and a secondary flow guide plate; the dustproof screen is installed on the bottom of a central gas discharge pipe. The structure of the experiment system of the cyclone separator is that an air compressor is connected with the gradually enlarged inlet of the cyclone separator via a gas conveying pipeline; the gas conveying pipeline is sequentially provided with a temperature sensor, a mass flow rate meter, a first pressure sensor, an inlet of a solid particle feeder and a second pressure sensor; the central gas discharge pipe of the cyclone separator is connected with a dedusting device. According to the invention, a single dust-containing gas source is distributed by multiple channels; the flow state of the dust-containing gas streams is optimized; under the equal total gas intake amount, the treatment amount of the separator is improved; the flowing path of the dust-containing particles is changed by the dustproof screen; fine particles are effectively prevented from overflowing from the central gas discharge pipe; the separation efficiency is improved; the system pressure loss is reduced.

The invention provides a central buried olive-shaped interception nozzle rod comprising a tow mandrel (1) and forming paper (2), wherein the forming paper (2) is coated on an outer layer of the tow mandrel (1), high-absorption materials (such as active carbon and nano-adsorption materials) are buried in the center of the tow mandrel along an axial direction to prepare a solid or hollow olive-shaped adsorption core (3), and the surface of the adsorption core is provided with adsorption micro pores (4). Because the adsorption core has high adsorption performance for smoke gas, a large amount of smoke gas is adsorbed, and aerosol grains are enlarged to increase deposition efficiency, therefore, grains in the smock gas are greatly intercepted by repeatedly passing through a plurality of adsorption cores.

The invention provides an air conditioner and a heat exchange system. The air conditioner comprises a radiator, an electric box and an indoor unit water draining pipe, wherein the radiator is provided with a water inlet and a water draining opening, the radiator is arranged around the periphery of the electric box, and the indoor unit water draining pipe is in butt joint with the water inlet. According to the air conditioner, the problems that in the prior art, the condensate water resource is wasted, and the radiating effect of the electric box is poor are solved.

The invention discloses a forced circulation ionic membrane electrolytic bath, and relates to electrolytic baths. The anode ionic membrane electrolytic bath internally comprises an inlet pipe, an anode frame chamber, a gas-liquid separation chamber and an outlet; the anode frame chamber is of a frame structure, a plurality of gratings are arranged on the frame structure, and divide the anode frame chamber into a plurality of unit chambers, a plurality of baffle plates are distributed in each unit chamber, and the baffle plates are distributed on the gratings at the two ends of the unit chambers in a left-and-right staggered manner; and due to the fact that the thickness of the ionic membrane electrolytic bath is small, when the ionic membrane electrolytic bath is applied to the chlor-alkali technology process, electrolytic process of the high current density can be achieved, and therefore the yield is increased; secondly, due to the baffle effect of the baffle plates, the height of the ionic membrane electrolytic bath can be reduced to 1 / 2 to 3 / 4 of the height of a traditional ionic membrane electrolytic bath, and the manufacturing cost of the electrolytic bath can be greatly saved; and finally the baffle plates which incline by a certain angle enable electrolytes flowing through the baffle plates to rotate in an orientation manner, the radial mixing degree is increased, and the raw material using rate is better improved.

The invention relates to an annular break blocking filter rod. The annular break blocking filter rod consists of a bundle mandrel (5) and forming paper (4) enwrapping the outer layer of the bundle mandrel and is characterized in that: a layer of lining paper (1) enwrapping the bundle mandrel is arranged between the bundle mandrel and the forming paper; 1 to 10 break rings surrounding the bundle mandrel are arranged on the lining paper (1); each break ring consists of at least one transverse groove (2) peripherally formed along the bundle mandrel; and a group of drainage pores (3) are formed on the two side surfaces of each transverse groove respectively. The annular break blocking filter rod has the advantages that: the groove extrudes the bundle toward the axis so as to increase the density of the bundle and improve the longitudinal blocking efficiency to a certain extent; and part of smoke S enters the groove from the drainage pores and is subjected to transverse blocking twice in the groove area and condensed so as to further block the smoke completely and comprehensively and improve the blocking efficiency of the fiber type filter rod greatly.

The invention provides a manufacturing method of a semiconductor structure, which is characterized by comprising the following steps of: providing a semiconductor substrate and forming an epitaxial layer on the semiconductor substrate; forming a semiconductor device on the epitaxial layer, wherein the semiconductor device comprises a source region, a drain region and a grid stack; and forming a conductive layer which is not connected with the semiconductor device at the periphery of the semiconductor device and used for reducing base resistance. Correspondingly, the invention also provides a semiconductor structure manufactured by the method. The manufacturing method and the semiconductor structure are used to restrain the parasitic effect of a BJT (bipolar junction transistor) effectively, thereby improving the overall performance of the semiconductor device.

The invention relates to a flammable gas recycling thermal treatment furnace which comprises a furnace body, a combustion chamber provided with a combustor and an exhaust discharge pipe, wherein a furnace pipe is arranged in the furnace body, a furnace door is arranged at a feeding end, a closed annular hot air channel is formed between the inner wall of the furnace body and the outer wall of the furnace pipe, and a high-temperature glue gas inlet and a flue gas exhaust opening are formed on the furnace body; the combustion chamber comprises a housing which is internally provided with a combustion cavity, wherein an air jet hole and a gas inlet are formed on the housing, the combustion chamber is arranged out of the furnace body, the air jet hole is communicated with the high-temperature flue gas inlet on the furnace body, and the gas inlet of the exhaust gas discharge pipe is communicated with the inner side of the furnace pipe and the gas outlet of the exhaust gas discharge pipe extends into the combustion cavity through the gas inlet on the combustion chamber. According to the furnace provided by the invention, the combustion chamber and the furnace body are independently arranged, the exhaust gas discharge pipe introduces flammable gas generated in the furnace pipe into the combustion chamber to be combusted, and high-temperature flue gas generated by combustion is introduced into a hot air channel to supply energy for thermal treatment, so that energy sources are recycled, the energy consumption is reduced, and the furnace is energy-saving and environmental-friendly, easy to overhaul, simple in integral structure and low in cost.

The invention discloses an electric valve. The electric valve comprises a valve body, a valve seat, a sliding block and a driving device. The valve body is provided with a first connecting port, a second connecting port and a third connecting port; the valve seat is fixed into the valve body and provided with a first through hole and a second through hole, the first through hole is one part of a flowing passage formed between the first connecting port and the third connecting port, and the second through hole is one part of the a flowing passage formed between the second connecting port and the third connecting port; the sliding block is located in the valve body and slidably matched with the valve seat, and when the sliding block rotates relative to the valve seat, the condition that thefirst through hole is completely covered and the second through hole communicates with the third connecting port, or the first through hole and a part of the second through hole are synchronously covered, or the second through hole is completely covered and the first through hole communicates with the third connecting port can be realized; and the driving device drives the sliding block to rotate.The structural design of the electric valve can effectively simplify the design of a pipeline.

The invention provides an externally buried tubular column surrounding type intercepting filter rod, which consists of a tow core rod (1) and wrap paper (4) coated on the outer layer. The outer circumference of the tow core rod is provided with vertically distributed pipe cores (2); the wrap paper (4) coats the pipe cores (2) onto the tow core rod (1); and the pipe cores (2) are provided with small guide holes (3). The externally buried tubular column surrounding type intercepting filter rod has the advantages that: the pipe cores vertically buried into the tow of the filter rod extrude local tow to make the density increase and force partial smoke diffuse to the pipe cores through the small holes on the pipe cores; when the smoke flows through the small holes, the smoke can be amplified by the small holes to be diffused in a fan shape, and the flow rate is reduced or the smoke is condensed; and the pipe cores are similar to 'cold wells', the flow rate of the smoke flowing through the pipe cores is reduced due to small pressure, partial smoke is condensed and deposited in the pipe cores, and the rest smoke flows into the tow through the small holes when flowing to the tails of the pipe cores.

The invention provides a method for manufacturing a semiconductor structure. The method comprises the following steps of: providing a semiconductor substrate and forming an epitaxial layer on the semiconductor substrate; forming a semiconductor device on the epitaxial layer; forming a leakage current absorbing region, wherein the leakage current absorbing region is located at one side of a leakage region of the semiconductor device and does not contact with the leakage region. Accordingly, the invention further provides a semiconductor structure manufactured by the method. With the adoption of the method and the semiconductor structure disclosed by the invention, the leakage current in a thick epitaxial device can be effectively reduced, and thus the whole performance of the semiconductor device can be improved.

The invention discloses a gearbox lubricating property testing method and a gearbox lubricating property testing device. The gearbox lubricating property testing method comprises the following steps that a gearbox is assembled, a speed changing component is arranged in a gearbox shell, and the gearbox shell is made to be transparent; the gearbox is placed on a test bench, lubricating oil is addedinto the gearbox shell, and the gearbox is started; the gearbox is adjusted to a specific posture, rotating speed and gear through the test bench, and the lubrication state of a speed change part is observed and recorded; and the posture, the rotating speed and the gear of the gearbox are adjusted, and the lubrication state of the speed change part under different working conditions are observed and recorded. The gearbox lubricating property testing device comprises the speed changing component and the gearbox shell, the gearbox shell is arranged in a transparent mode, and the speed changing component is arranged in the gearbox shell. The gearbox lubricating property testing method and the gearbox lubricating property testing device provided by the invention have the advantage that the lubricating condition of lubricating oil on each part in the gearbox is effectively tested.

Provided is a worm with a built-in lubricating structure. The worm comprises a worm body. Worm helical teeth is arranged on the outer surface of the worm body, and a part, where the worm helical teeth meshes with a worm gear in a matched mode, on the worm helical teeth is a worm meshing teeth part. One end part of the worm body is provided with a blind hole, the worm meshing teeth part is evenly provided with a plurality of oil spit holes upward along a worm spiral line shaft, and the oil spit holes are communicated with an inner cavity of the blind hole. According to the worm with the built-in lubricating structure, the structure of the worm is improved, and the flow path of lubricating oil is changed, so that the lubricating oil directly is sprayed to the meshing part of the worm and the worm gear through the blind hole and the oil spit holes, and the flow speed of the lubricating oil is accelerated, therefore, heat dissipation is expedited, and the reliability of a lubricating system is improved.

The invention provides a plugboard type baffled anaerobic tank based on a biological framework and a sewage denitrification method.The plugboard type baffled anaerobic tank is internally provided with a plurality of baffle plates and a plug-flow stirrer, the bottom of the anaerobic tank is provided with a water inlet pipe, the upper portion of the anaerobic tank is provided with an effluent weir and a water outlet pipe, and the upper portion of the effluent weir is provided with a water inlet pipe; a plurality of groups of longitudinal slots matched with the baffle plates in size are formed in the side wall of the anaerobic tank, each baffle plate comprises a baffle plate frame body and a biological frame mounted in the baffle plate frame body, and the biological frame is of a hollow porous structure and is filled with a sulfur autotrophic denitrification biological carrier. The plugboard type baffling anaerobic tank provided by the invention can flexibly adjust the baffling path of sewage, avoids deposition and accumulation, improves the reaction treatment efficiency of the sewage, is convenient to maintain, and has remarkable progress compared with the prior art.

The invention provides a plug-in baffled anaerobic tank and a sewage denitrification method based on a biological framework. The anaerobic tank is provided with a plurality of baffles and a plug-flow agitator, and a bottom of the anaerobic tank is provided with a The water inlet pipe is provided with a water outlet weir and a water outlet pipe on the upper part of the anaerobic tank, and a plurality of groups of longitudinal slots matching the size of the baffle plate are arranged on the side wall of the anaerobic tank, and the baffle plate includes a baffle plate A plate frame body and a biological frame installed in the baffle frame body, the biological frame is a hollow porous structure, and the interior is filled with a sulfur autotrophic denitrification biological carrier. The plug-in type baffled anaerobic tank provided by the invention can flexibly adjust the baffled path of sewage, avoid sedimentation and accumulation, improve the reaction and treatment efficiency of sewage, and at the same time facilitate maintenance, which is a significant improvement compared with the prior art.

The invention provides a multifunctional integrated air conditioner. The multifunctional integrated air conditioner comprises an air conditioner main unit, an indoor unit, an outdoor unit, an indoor air inlet, an indoor air outlet, an outdoor air outlet and a control device, wherein the indoor unit and the outdoor unit are distributed on the two sides of the air conditioner main unit respectively,the indoor air outlet is connected with the indoor unit, and the outdoor air outlet is connected with the outdoor unit; the indoor air inlet communicates with the indoor environment, the indoor unitand the outdoor unit; the control device is used for controlling the indoor air inlet, the outdoor unit and the indoor unit to be started, so that indoor air enters the indoor unit and the outdoor unit through the indoor air inlet and is exhausted through the indoor air outlet and the outdoor air outlet respectively; the control device is further used for controlling the indoor air inlet and the outdoor unit to be closed so that outdoor fresh air can enter the indoor environment through the outdoor air outlet, the outdoor unit, the indoor unit and the indoor air outlet in sequence. The multifunctional integrated air conditioner has the functions of refrigeration, fresh air and air exchange at the same time, and is simple in structure.

An oxygen-enriched membrane oxygen generation device comprises a inner cabin body and an outer cabin body which are nested inside and outside as well as a cabin seat covering openings in the bottoms of the cabin bodies in a sealing manner, wherein both the inner cabin body and the outer cabin body adopt a reversely-buckled barrel shape; an air feeding port is formed in the cabin seat on the inner side of the inner cabin body, a first nitrogen-rich gas exhaust port is formed in the top of the inner cabin body, a gas flow baffle is configured in the inner cabin body, multiple oxygen permeation windows are densely formed in the side wall, and oxygen-enriched membranes are airtightly mounted on the oxygen permeation windows; an oxygen-enriched gas output port is formed in the top of the outer cabin body, and a second oxygen-enriched gas exhaust port is formed in the cabin seat and between the outer cabin body and the inner cabin body; an exhaust end of the first nitrogen-rich gas exhaust port and a gas inlet end of the second nitrogen-rich gas exhaust port are connected through a flexible first exhaust pipe, and a second exhaust pipe provided with a gas flow control valve is configured at the exhaust end of the second nitrogen-rich gas exhaust port. According to the device, the modular and small-size oxygen-enriched membranes are easy to replace by a user; the gas flow baffle can prevent nitrogen from enriching in the side wall area of the inner cabin body, and the oxygen preparation effect in the long-time use process is guaranteed.

The invention discloses a friction stir welding tool for an overlap joint. The friction stir welding tool is composed of a shaft shoulder and a stirring needle. The stirring needle is shaped like a frustum, the small bottom of the frustum is connected with the shaft shoulder, the end face of the large bottom of the frustum is provided with a round concave hole, and the outer surface of the frustum is provided with three arc-shaped grooves distributed in the circumferential direction. Meanwhile, the invention further discloses the stirring needle and the structures and the sizes of all parts of the shaft shoulder. When a stirring tool designed through the friction stir welding tool is adopted for carrying out friction stir overlap welding, the stirring needle of the frustum shape generates oblique upward thrust on plasticized metal around the overlap face, so that the perpendicular motion of the plasticized metal is reduced, and the perpendicular moving tendency of the overlap face is reduced. Moreover, as the concave hole and the grooves in the side face are formed in the bottom of the stirring needle, material flow in weld zones is improved, the overlap face is broken completely, and the weld metal can be mixed fully. Accordingly, the size of the hook-like defect in a weld joint obtained through welding of the tool is greatly reduced, and the strength coefficient of the joint is remarkably improved.

The present invention discloses a gyrotron with a compact liquid cooling structure, belonging to the technical field of gyrotrons. The gyrotron comprises a waveguide tube section, a cooling cavity anda cooling pipe sleeving the waveguide tube section, the outer wall of the waveguide tube section is provided with a dividing strip which is extended along the axial direction of the waveguide tube todivide the cooling cavity into a first cooling region and a second cooling region which communicate to each other through a circumference channel arranged on the dividing strip, a liquid inlet and aliquid outlet are arranged at the same end of the cooling cavity, and the circumference channel is arranged at the other end of the cooling cavity. The gyrotron with the compact liquid cooling structure is provided with the dividing strip and the circumference channel to change the flow path of the cooling liquid to allow the liquid outlet and the liquid inlet of the cooling cavity to be arrangedat the same end of the cooling cavity on the premise of avoiding that the bulk mass of dead water zone appears in the cooling cavity so as to allow the whole structure of the waveguide tube section onthe radial direction to maintain a compact single-layer structure.

The invention discloses a vibration dust removal device for a computer host. The vibration dust removal device comprises a shell, a dust blocking assembly and a vibration dust removal assembly. The shell is a homocentric-square-shaped cavity with front and rear openings, the front face of the shell is connected with rear screws of a fan, the dust blocking assembly is arranged in the cavity of the shell, and the dust blocking assembly can block the opening in the rear portion of the shell. The vibration dust removal assembly is further arranged in the gap of the dust blocking assembly, the vibration dust removal assembly can remove dust of the dust blocking assembly, and a dust collection box is detachably arranged below the dust blocking assembly. Compared with the prior art, a filter screen assembly can guide air at different angles, the flowing path of air flow can be changed, the air flow makes contact with filter screen assemblies with different areas so as to adapt to the filtering effect under different environments and fan power, and a dust removal elastic piece can be attached to a filter screen all the time so as to remove dust in a rotating mode.

The invention relates to a temperature-adjusting filter stick used for heating heat-not-burning tobaccos. The temperature-adjusting filter stick is composed of a filter stick barrel (1) and a solid part (2) located in the filter stick barrel (1), and a smoke channel is formed in a gap (3) between the inner wall of the filter stick barrel (1) and the solid part (2). The solid part (2) of the filterstick structure is located in the center of the filter stick to adjust distribution of heat among the solid part (2), smoke and the periphery of the filter stick so as to adjust heat transfer for cooling. The concentration of smoke is not decreased, the temperature-adjusting filter stick improves the overall smoking taste of the heat-not-burning tobaccos and decreases the temperature of the smoke, and the smoking comfort of consumers is improved.

The invention discloses a preparation method and application of a functional cigarette filter stick capable of selectively reducing tar and lessening harm. The preparation method for the functional filter stick capable of reducing tar and lessening harm comprises the following steps: opening acetate tows until the width of the acetate tows to be more than two times of that of embossing paper; coating and bonding the embossing paper so as to form an acetate tow / embossing paper / acetate tow interlayer structure; after the interlayer structure is folded and contracted forwardly, reversely, orderly and alternately for multiple times, wrapping the interlayer structure with inner wrapping forming paper for forming, and slitting the wrapped interlayer structure so as to obtain an embossing paper and acetate fiber mixed filter stick section; butting and compounding the embossing paper and acetate fiber mixed filter stick section with a hollow acetate fiber filter stick section; and wrapping the butted and compounded filter stick section with outer wrapping forming paper for forming, so as to obtain the functional filter stick. The functional filter stick is not added with any tar-reduction and harm-lessening additive, and relatively low in cost, has a good tar-reduction effect in comparison with a common hollow acetate fiber composite filter stick, meanwhile, has an excellent selective reduction effect for phenol, crotonaldehyde and other harmful ingredient in smoke, and does not obviously change the smoke mouthfeel.

The invention discloses a deodorization device for industrial waste gas treatment. The device comprises a treatment box body, the inner wall of the treatment box body is fixedly connected with a first baffle plate, a second baffle plate and a mounting groove, the first baffle plate and the second baffle plate are respectively located at two sides of the mounting groove, the inner wall of the mounting groove is fixedly connected with a rotating motor, an output shaft of the rotating motor is fixedly connected with a reciprocating lead screw, the reciprocating lead screw is sleeved with a movable block matched with the reciprocating lead screw, and the end, away from the rotating motor, of the reciprocating lead screw is fixedly connected with a rotating rod. According to the invention, the flowing path of industrial waste gas is changed, the industrial waste gas can be in full contact with the sprayed treatment liquid, the industrial waste gas is prevented from being directly discharged without being treated, the deodorization effect is improved, large-particle dust in the industrial waste gas can be cleaned in advance, the large dust is prevented from being attached to the inner wall of the device to form difficult-to-clean substances after being in contact with the treatment liquid, and sufficient treatment on the industrial waste gas is ensured.

The invention discloses a multi-way reversing valve. The multi-way reversing valve comprises a shell and a rotary core structure, wherein the shell is provided with at least three input pipelines and at least three output pipelines; the rotary core structure is assembled in the shell in a close fit way and comprises a connecting shaft and a body; the body is fixedly connected with the connecting shaft, is of an inversed circular truncated cone shape, and comprises an input part and an output part; the input part is arranged at the top end of the body and is provided with at least three inlets and at least three first channel structures communicated with the inlets in a one-to-one manner; the output part is arranged adjacent to the downside of the input part and comprises at least three circles of grooves and at least three second channel structures; the three circles of grooves are concentrically formed along the position, facing the downside of the body, on the connecting shaft; the diameters of the grooves are gradually reduced towards the downside of the body; each groove is provided with an outlet; the second channel structures are communicated with the outlets and the first channel structures in a one-to-one manner; the input pipelines are communicated with the inlets in a one-to-one manner and the output pipelines are communicated with the grooves in a one-to-one manner. During rotation, the connecting shaft drives the body to rotate together, and the flowing path of liquid can be changed.

The invention discloses a forced circulation ionic membrane electrolytic bath, and relates to electrolytic baths. The anode ionic membrane electrolytic bath internally comprises an inlet pipe, an anode frame chamber, a gas-liquid separation chamber and an outlet; the anode frame chamber is of a frame structure, a plurality of gratings are arranged on the frame structure, and divide the anode frame chamber into a plurality of unit chambers, a plurality of baffle plates are distributed in each unit chamber, and the baffle plates are distributed on the gratings at the two ends of the unit chambers in a left-and-right staggered manner; and due to the fact that the thickness of the ionic membrane electrolytic bath is small, when the ionic membrane electrolytic bath is applied to the chlor-alkali technology process, electrolytic process of the high current density can be achieved, and therefore the yield is increased; secondly, due to the baffle effect of the baffle plates, the height of the ionic membrane electrolytic bath can be reduced to 1 / 2 to 3 / 4 of the height of a traditional ionic membrane electrolytic bath, and the manufacturing cost of the electrolytic bath can be greatly saved; and finally the baffle plates which incline by a certain angle enable electrolytes flowing through the baffle plates to rotate in an orientation manner, the radial mixing degree is increased, and the raw material using rate is better improved.

The invention provides a method for manufacturing a semiconductor structure, comprising the following steps: providing a semiconductor substrate, and forming an epitaxial layer on the semiconductor substrate; forming a semiconductor device on the epitaxial layer; forming a leakage current absorption region, the The leakage current absorbing region is located at one side of the drain region of the semiconductor device and is not in contact with the drain region. Correspondingly, the present invention also provides a semiconductor structure manufactured by applying the method. The method and the semiconductor structure of the invention can effectively reduce the leakage current in the thick epitaxial device, and further improve the overall performance of the semiconductor device.

The invention discloses a vibrating and dust-removing device for a mainframe of a computer, which comprises a casing, a dust-shielding component, and a vibrating and dust-removing component, wherein the casing is a chamber with front and rear openings in the shape of a "back", and the front of the casing is screwed with the rear of the fan. connected, the cavity of the housing is provided with a dust-shielding component, which can block the opening at the rear of the housing, and a vibration dust-removing component is also arranged in the gap of the dust-shielding component, and the vibration dust-removing component can The dust of the dust-shielding component is cleaned, and a dust collecting box is detachably arranged under the dust-shielding component. Compared with the prior art, the present invention enables the filter screen assembly to guide the air at different angles, and can change the flow path of the air flow, making it contact with the filter screen assembly of different areas, so as to adapt to the filtering effect under different environments and fan power , and the dust shrapnel can always fit the filter to rotate the dust.