47results about How to "Does not affect pressure" patented technology

The invention discloses a turbocharger. The invention adopts a technical proposal that the turbocharger comprises a turbine rotor shaft assembly, an intermediate, a pressure housing, a diffusion plate fixedly connected with or integrally formed with the pressure housing, wherein the turbine rotor shaft assembly is at least provided with a set of permanent magnet rings matched with each other between a turbine and a compressor impeller. The permanent magnet rings comprise at least one permanent magnet dynamic ring and at least one permanent magnet static ring which are matched with each other to suspend a rotor shaft of the turbine rotor shaft assembly. The invention provides a friction-free turbocharger which uses permanent magnet rings to suspend the rotor shaft of the turbine. The turbocharger can solve the problems of susceptibility to damage, oil leakage and pollution, reduce response lags, and does not cause serious influence on the engine except for reduction in power when damaged. The turbocharger solves the problems of susceptibility to damage, oil leakage and pollution of the prior turbocharger and overcomes the drawbacks such as high price, large volume and complex structure of electromagnetic suspension bearing exhaust turbocharger.

The invention relates to sleep assisting functional food with GABA (gamma amino acid butyric acid) and a method for preparing sleep assisting functional food.The sleep assisting functional food comprises, by weight, 18-22% of the gamma amino acid butyric acid, 15-25% of semen ziziphi spinosae powder, 9-11% of yeast powder, 17-21% of diluents, 18-23% of flavoring agents, 0.03-0.05% of fresheners, 7-10% of adhesive, 0.8-1.2% of lubricants and 0.8-1.2% of flow agents.The sleep assisting functional food and the method have the advantages that natural raw materials are fermented by the aid of lactic acid bacteria to obtain the natural GABA, and the GABA is high in purity and free of optional toxic and side effects; the GABA and ziziphi spinosae are composition components, and calming and hypnosis effects can be realized; the yeast powder contains abundant proteins, amino acid, vitamins B and trace elements, and effects of relieving stress and soothing sleep of the sleep assisting functional food further can be improved by the 'stress relieving vitamins' VB2, VB6 and VB12; the sleep assisting functional food does not contain medicine components such as sleeping pills and antihistamine and accordingly is free of side effects of the sleeping pills and dependence, and normal work in daytime cannot be affected after the sleep assisting functional food is eaten.

A compound muffler for high temperature and high pressure steam / gas discharge. It is a new type of noise reduction device for various types of high-temperature and high-pressure air exhaust / exhaust steam, including: the two ends of the injection outer cylinder armor are welded with oval head armor; One end of the head armor piece is welded with the interface throttle pipe piece A with the pipe end plate A piece, and the other end of the oval head piece A piece is welded with the lifting ear piece A; On the joint throttling tube A, there is welded the plugging ring plate A with the throttling and decompression tube A and the tube end plate B respectively; the above-mentioned related components are welded firmly and manufactured with them. Consists of a complete set of products.

The invention discloses a broken stone collection and filtration device with a convection negative-pressure channel, and relates to the technical field of medical equipment. The broken stone collection and filtration device comprises a broken stone collection and filtration device and a negative-pressure collection system, wherein the broken stone collection and filtration device comprises a cavity formed by connecting an upper cavity body and a lower cavity body through threads; the upper cavity is provided with a connector communicated with a broken stone mixed solution outlet; the cavity is internally provided with a filtering column with one end stretching out of the lower cavity body; a plurality of through holes with pore diameters which are gradually reduced are formed in a column body of the filtering column; the negative-pressure collection system comprises a main negative-pressure bottle communicated with a negative-pressure source, a sedimentation bottle communicated with the main negative-pressure bottle, and a negative-pressure buffering bottle; a mixed solution inputting pipe and a flow fine tuning valve are arranged at the upper part of the sedimentation bottle, and a storage bottle is communicated with the lower part of the sedimentation bottle; the negative-pressure buffering bottle is communicated with the sedimentation bottle and the storage bottle. By adopting the broken stone collection and filtration device disclosed by the invention, the problems that tangible things in a mixed solution flowing out in a stone surgery are easily mutually stuck and accumulated on a filter screen and blocking is caused, so that a negative-pressure suction force in a surgery pipeline is weakened and even disappeared are solved, and definitely effective and visible continuous negative-pressure suction is kept.

Novel hydrodynamic pressure regulation and control box type pressure-superposed and pressurized water supply equipment comprises a water tank, a guiding tank and a water supply pump set, wherein a water inlet of the water tank is connected with a water inlet main pipe through a water inlet pipeline of the water tank; a water outlet of the water tank is connected with a second water inlet of the guiding tank; a first water inlet of the guiding tank is connected with the water inlet main pipe through a water inlet pipeline of the guiding tank; a water outlet of the guiding tank is connected witha water inlet end of the water supply pump set; a first hydrodynamic pressure regulation and control pipe network safety device is arranged on the water inlet pipeline of the guiding tank; a second hydrodynamic pressure regulation and control pipe network safety device is arranged on the water inlet pipeline of the water tank; and the two hydrodynamic pressure regulation and control pipe networksafety devices adopt identical structures and each comprises a gate valve and a hydraulic driving device, wherein the gate valve comprises a valve body and a gate plate, a water inlet of the gate valve is used to be connected with a water inlet pipeline, the hydraulic driving device comprises a hydraulic cylinder, the hydraulic cylinder comprises a cylinder body, a piston and a piston rod, the piston rod is connected with the gate plate, the cavity of the cylinder body is connected with the water inlet pipe through a gate plate opening power pipeline, and the upper part of the cavity of the cylinder body is connected with a gate plate closing driving device.

The invention discloses a circulating water electrochemical treatment device and method. A control system is used for judging the change of real-time water quality by acquiring current data in electrolysis of an electrode plate group in real time; a control signal corresponding to water quality is output to a power supply device according to water quality change; a pulse signal with a corresponding frequency is output to the electrode plate group through the power supply device; reagents are adopted as assistant, so that the ion concentration near the electrode plate is increased, the cathodesheet adsorbs calcium, magnesium and other easy-to-scale cations, the anode sheet reduces chloride ions, partially forms chlorine gas to be released, and partially forms hypochlorous acid and chlorinedioxide as efficient bactericides, so that the purpose that circulating water is free of sewage any more is achieved, zero discharge of the circulating water is thoroughly realized, and the operationcost of the circulating cooling water is reduced. The treatment device is installed without changing a pipeline, pressurized water does not need to be introduced through a main circulating pipeline,and the electrode plate group is put into or taken out of a cold water pool through an electrode group crane, so that the pressure and lift of a main circulating water system are not influenced, and the operation of a whole circulating water device is not influenced.

The invention discloses a carburetor which comprises a carburetor body (1) and a float cover (2), wherein the float cover (2) is connected with an accelerating pump (14), a diaphragm (18) of a cavity (17) is arranged at the end part of a top bar (19), and the top bar (19) is pressed against a mast base assembly (8); the cavity (17) is communicated with a float chamber by an accelerating oil duct (24), a pump body (15) is provided with an accelerating nozzle (26), and the accelerating nozzle (26) is arranged behind a main nozzle (42); a float (28) is provided with a gap, and a straight tube (32) communicated with a needle valve seat is arranged on the float cover (2). The carburetor disclosed by the invention has the advantages that: the accelerating nozzle (26) is arranged behind the main nozzle (42), so that the operation of the accelerating pump (14) can not cause reduction of the fuel injection amount of the main nozzle (42), therefore, the accelerating effect is good; and the outsides of through holes (for installing plugs) of the carburetor body (1) and the float cover (2) are respectively provided with a boss, therefore, the sealing effect is good.

The invention relates to a recycling method of output coal gas in an iron making technology. Generated coal gas of a final reduction reactor is subjected to dust removal by hot whirlwind; a part of generated coal gas enters a pre-reduction reactor as reduction coal gas for use; the other part of generated coal gas is subjected to dust removal, dehydration, cooling and secondary dust removal; another part of generated coal gas is used as surplus coal gas to be mixed with pre-coal gas generated by the pre-reduction reactor to form output coal gas; another part of generated coal gas is used as cold coal gas which is pressurized and then mixed with the generated coal gas through a cold coal gas line; a bypass branch line is also arranged in the cold coal gas line and is connected with the surplus coal gas line; redundant cold coal gas is discharged from the surplus coal gas line through the bypass branch line; after being pressurized, transformed and absorbed to release CO2, the output coal gas is delivered into the cold coal gas line and is mixed with the generated coal gas; and after being cooled, the generated coal gas as the reduction coal gas enters the pre-reduction reactor for use. In the invention, according to furnace conditions and the characteristic of instability of smelting rate, fuel ratio and factory energy consumption are reduced to the maximum; and the working modes of the coal gas line are flexibly switched.

The invention discloses a rotatable material distributing valve device for coal mine gangue paste body filling and an operation method and belongs to the field of coal mine gangue paste body filling.The rotatable material distributing valve device comprises a rotating valve, a mining reversing valve and a valve hydraulic driving device; the mining reversing valve and the valve hydraulic driving device are connected to the upper end of the rotating valve, and the mining reversing valve is located on one side of the valve hydraulic driving device; the mining reversing valve is used for drivingthe rotating valve for reversing by manually connecting the valve hydraulic driving device; or an electromagnetic valve of the valve hydraulic driving device is used for connecting the valve hydraulicdriving device to drive the rotating valve for rotating and reversing. The rotatable material distributing valve device has the advantages of being compact in structure, resistant to abrasion, resistant to high pressure, good in sealing performance, convenient to disassemble, assemble and maintain, easy to operate and capable of saving labor. Firstly, in-site and remote control is achieved, in-site overhauling and remote control of a center control room are facilitated; secondly, under a high-pressure work condition, leakage is also avoided; thirdly, the structure is simple, the using amountof parts is small, and the fault rate is greatly reduced; and fourthly, using in a narrow and small space can be achieved, installing is convenient, and unattended operation is achieved.

The invention discloses an uninterrupted calcium carbide furnace afterheat recovery control system and method, and belongs to calcium carbide furnace afterheat recovery systems and methods. The system comprises an afterheat recovery chamber, a heat tube exchanger, a cooling circulating air device, a hot water and steam circulating device and a PLC automatic control device, wherein the afterheat recovery chamber adopts a multi-grade parallel mode, and achieves continuous production through automatic switching so as to overcome the defect of production intermittence of general afterheat recovery; the cooling circulating air system and the hot water and steam circulating system perform real-time adjustment according to different afterheat recovery conditions and output utilization conditions; the PLC automatic control device achieves real-time monitoring and automatic control of whole afterheat recovery to adjust the switching between different afterheat recovery chambers and the rotating speed of a hot air circulating pump and a hot water and steam circulating pump so as to realize optimal control. The uninterrupted calcium carbide furnace afterheat recovery control system and method can preferably recycle radiation and sensible heat in the cooling process of calcium carbide, improve actual lasting production capacity, and have better actual promotion and application value.

The invention provides a transmission belt forming hub. The hub comprises a framework, a forming surface and a chamber which is located between the framework and the forming surface and formed by an inner chamber wall, an outer chamber wall and a chamber side wall, wherein the chamber is connected with the framework and the forming surface; air holes are distributed in the forming surface; the chamber comprises at least two separated chamber bodies in the axial direction of the forming hub; and each chamber body comprises an air inlet and one or more air outlets communicating with the corresponding air holes in the forming surface. The novel forming hub can be separated from a rubber sleeve conveniently, and the quality of the rubber sleeve and the working efficiency are improved.

The invention discloses an information interaction method and an electronic device. The method comprises the following steps: logging onto a first application based on a first user account, and creating and saving a form to be filled through the first application, wherein the form to be filled comprises at least one form item; selecting at least one second user account, and sending the form to befilled to a second electronic device corresponding to the at least one second user account through the first application; receiving subforms fed back by at least part of the second user accounts for the form to be filled through the first application; and merging feedback information contained in the subforms fed back by the at least part of the second user accounts to obtain a target form comprising the feedback information of the at least part of the second user accounts for each form item.

The invention provides a painless oral cavity pushing anesthesia apparatus automatically reminding a user of liquid medicine replacement. The painless oral cavity pushing anesthesia apparatus comprises a host, a liquid library and two opening-closing bolts, two anesthetic sleeve mounting hole seats are formed in the upper end of the host, each anesthetic sleeve mounting hole seat is detachably connected with an anesthetic sleeve, one upper joint and two lower joints are arranged on the side wall of the liquid library, free ends of two first hoses are detachably connected with the two lower joints, free ends of second hoses are detachably connected with the upper joint, the two opening-closing bolts are placed in the liquid library, an upper contact is fixed to each free end and electrically connected with an LED (light-emitting diode) lamp, lower contacts electrically connected with a battery are arranged on a plugging block, and the plugging block is connected with free ends of the opening-closing bolts through flexible wires. The painless oral cavity pushing anesthesia apparatus automatically reminding the user of liquid medicine replacement can simultaneously load two clamping anesthetic bottles, one clamping anesthetic bottle can be replaced in the anesthesia operation process, the pressure of liquid medicines in the liquid library cannot be affected, and uninterrupted anesthesia operation is realized.

The invention discloses a plug-in type three-way normally-closed hydraulic-control reducing valve which is characterized by comprising a retainer ring (1), a valve core (2), a valve body (3), a spring(4), three operating windows and a window control port X for control, wherein the three operating windows comprise an inlet P, an outlet A and a return opening T; the outlet is positioned between theinlet and the return opening; a control chamber (13) is formed among the valve core, the retainer ring and the valve body; the control chamber is communicated with the control port; a spring chamber(6) is formed between the valve core and the valve body; n communicated inner holes are formed in the valve core; the inner holes are communicated with an outlet; the spring chamber is communicated with the inner holes; the valve core is in matched with the valve body by virtue of a minimum clearance; the diameter dimension of a matching surface of the valve core and the control chamber is largerthan the diameter dimension of a matching surface of the valve core and the spring chamber; a spring is arranged in the spring chamber; the retainer ring, the inlet, the outlet and the return openingare formed in the valve body; and the control port is formed in the retainer ring. According to the reducing valve disclosed by the invention, a zero pressure state of the outlet can be realized, other branches are not influenced when one pump station drives multiple loads and a single branch is in a completely zero pressure state.

The invention relates to a pulse dry recovery and purification system and method for coal gas of a medium-high pressure gasification furnace, and the system comprises a medium-high pressure coal gas gasification furnace, heat exchange equipment, separation equipment, a dust removal system and a clean coal gas pipe network which are connected in sequence, and the dust removal system comprises a low-pressure pulse bag type dust remover and a depressurization clean coal gas reverse injection system; the low-pressure pulse bag type dust collector is used for filtering and purifying dust-containing coal gas into clean coal gas with the dust content of 5 mg / m < 3 > or below, and the depressurization clean coal gas reverse injection system is used for reducing the gas pressure in the low-pressure pulse bag type dust collector and then carrying out filter bag pulse dust collection; the depressurized clean gas reverse injection system comprises a high-pressure clean gas pressure relief system, a discharged clean gas recycling and pressurizing system, a high-pressure gas storage tank and a clean gas injection gas source pipeline with a pulse valve. The method has the advantages that the technical problem that pulse ash removal cannot be carried out on the medium-high pressure coal gas is solved, the problem that dry recovery of the coal gas of the medium-high pressure gasification furnace is difficult is solved, and the requirements of energy conservation, emission reduction and environmental protection policies are met.

The invention discloses a coaxial cable connector which comprises a metal shell, an insulator and an electric conducting terminal. The insulator and the electric conducting terminal are contained in the metal shell. The insulator comprises a head and a joint part extending from the head. The electric conducting terminal comprises a contact part arranged on the head of the insulator, a fixing part combined with the insulator, and a wiring part located in the joint part of the insulator. The joint part is provided with a bearing part used for bearing the wiring part of the electric conducting terminal, a vertical part vertically extending from the two sides of the bearing part, and a space, wherein the space is formed between the bearing part and the vertical part to contain a cable. A guiding protrusion is arranged on the vertical part, wherein the guiding protrusion protrudes into the space and is used for guiding the cable. The guiding protrusion can guide the cable and ensure accurate location of the cable in the cable assembling process.

The invention provides a painless oral anaesthetic propelling apparatus provided with a reserved medicine liquid bottle. The anaesthetic propelling apparatus comprises a host machine, an injection needle and a liquid reservoir, wherein two anaesthetic sleeve mounting hole seats are arranged at the upper end of the host machine; an anaesthetic sleeve is detachably connected to each anaesthetic sleeve mounting hole seat; a first soft hose is each fixedly connected to the top ends of the two anaesthetic sleeves; a second soft hose is fixedly connected to the tail of the injection needle; three connectors are arranged on the sidewalls of the liquid reservoir; rubber plugs are embedded in the connectors; and a connecting needle, which pierce the corresponding rubber plug, is each fixed to the free ends of the two first soft hoses and the second soft hose. According to the painless oral anaesthetic propelling apparatus provided with the reserved medicine liquid bottle provided by the invention, two clamped anaesthetic bottles can be simultaneously loaded; and via detachable connecting structures of the rubber plugs in the connectors and connecting needles, one of the clamped anaestheticbottles can be replaced in an anaesthesia operating process; influence to the pressure of medicine liquid in the liquid reservoir can be avoided; and discontinuous anaesthesia work can be implemented.

The invention discloses a turbocharger. The invention adopts a technical proposal that the turbocharger comprises a turbine rotor shaft assembly, an intermediate, a pressure housing, a diffusion plate fixedly connected with or integrally formed with the pressure housing, wherein the turbine rotor shaft assembly is at least provided with a set of permanent magnet rings matched with each other between a turbine and a compressor impeller. The permanent magnet rings comprise at least one permanent magnet dynamic ring and at least one permanent magnet static ring which are matched with each other to suspend a rotor shaft of the turbine rotor shaft assembly. The invention provides a friction-free turbocharger which uses permanent magnet rings to suspend the rotor shaft of the turbine. The turbocharger can solve the problems of susceptibility to damage, oil leakage and pollution, reduce response lags, and does not cause serious influence on the engine except for reduction in power when damaged. The turbocharger solves the problems of susceptibility to damage, oil leakage and pollution of the prior turbocharger and overcomes the drawbacks such as high price, large volume and complex structure of electromagnetic suspension bearing exhaust turbocharger.

The invention discloses a floating buffer hydraulic oil cylinder for a crane, and belongs to the field of buffer hydraulic oil cylinders. The floating buffer hydraulic oil cylinder for the crane is characterized in that heat generated by friction between a piston and the interior of a cylinder body is conducted into an oil storage bag, the solid lubricating oil inside the oil storage bag is melted, so that generated lubricating oil liquid quantitatively secretes the lubricating oil to the joint of the piston and the cylinder body in skin sweat secretion imitating mode, so that a quantitative lubricating effect is achieved, a lubricating effect is achieved conveniently, and in the lubricating oil secreting process, due to the change of hole pressure, through the arranged one-way throttle pipe, a first deformation block and a second deformation block which are arranged at the ends of the one-way throttle pipe circulate from top to bottom and are in a closed state from bottom to top, theinternal lubricating condition can be conveniently changed in a one-way mode, normal operation of lubrication can be effectively guaranteed, and in addition, the stability of the pressure intensity inside the cylinder body is not affected.

The invention provides a painless oral anaesthesia apparatus with automatic reminder to replace liquid. The painless oral anaesthesia apparatus comprises a host, a liquid library and two opening tongues; two anesthetic sleeve installing seats are arranged at the upper end of the host, and each anesthetic sleeve installing seat is detachably connected with an anesthetic sleeve thereon; one upper joint and two lower joints are arranged on the side wall of the liquid library; free ends of two first hoses are respectively detachably connected with the lower joints, and the free end of the second hose is detachably connected with the upper joint; the opening tongues are arranged in the liquid library, the free end of each opening tongue is fixed with an upper contact, and the upper contact is electrically connected with an LED lamp; a block is provided with a lower contact electrically connected with a battery and is connected with the free ends of the opening tongues through flexible cords. By the arrangement, two clamping type anesthesia medicine bottles can be loaded simultaneously, one of the clamping type anesthesia medicine bottles can be replaced during anaesthesia operation without affecting pressure of medicine liquid in the liquid library, and continuous anesthesia operation is realized.

The invention discloses a bearing seat of a carrier roller. The bearing seat of the carrier roller comprises an inner cylinder body and an outer cylinder body, wherein the inner cylinder body and the outer cylinder body are coaxially arranged, a reinforced rib is arranged between one end of the inner cylinder body and the inner wall of the outer cylinder body, a bearing installation groove is formed between an end portion inner ring of the outer cylinder body and the reinforced rib, a groove is formed in an outer ring of the outer cylinder body in the axial direction, a stopping ring is arranged at the other end of the inner cylinder body, the inner diameter of the stopping ring is smaller than that of the inner cylinder body, and a supporting rib is arranged in the inner wall of the stopping ring in the radial direction. The inner cylinder body, the outer cylinder body, the reinforced rib, the stopping ring and the supporting rib are formed by injection of materials such as high molecular weight polyethylene, plastics or nylon. The bearing seat of the carrier roller has the advantages of being reasonable in design, simple in structure, easy to machine, convenient to install, low in cost, strong in stability of the size, high in shock resistance, strong in practicability and easy to popularize and apply.

The invention discloses an air cylinder silencer. The air cylinder silencer comprises a silencing pipe and a connector and further comprises a silencer shell; the connector is fixed to the silencer shell; the silencing pipe is arranged in an inner cavity of the silencer shell; the first end of the silencing pipe is connected with the connector; the other end of the connector is an air inlet connecting opening and extends out of the silencer shell; the silencing pipe is a pipe body made of an elastic materials; multiple pipe wall micro air holes are formed in the pipe wall of the pipe body; and an air outlet communicating with the inner cavity is further formed in the silencer shell. According to the air cylinder silencer, waste compressed air of an air cylinder enters the silencing pipe through the air inlet connecting opening of the connector, then is split, discharged and released through the multiple pipe wall micro air holes of the silencing pipe, and then is discharged and released secondarily through the air outlet in the silencer shell, and the very ideal pressure reduction and silencing effects are achieved; in addition, the silencer is few in accessories, simple in structure, easy to assemble and disassemble and low in cost.

The invention discloses a positive-pressure self-closing indwelling needle. The positive-pressure self-closing indwelling needle comprises a catheter assembly, a needle tube assembly and an infusion connector assembly, and the catheter assembly comprises a three-way catheter seat and a catheter arranged at the front end of the three-way catheter seat; the needle tube assembly comprises a needle seat and a steel needle fixedly arranged on the needle seat, the steel needle is inserted into the catheter and the three-way catheter seat, and the three-way catheter seat is connected with an infusion connector through an indwelling needle infusion switch; and the indwelling needle infusion switch is provided with an energy storage and liquid storage device, the energy storage and liquid storage device automatically outputs liquid stored in the energy storage and liquid storage device when releasing stored energy, and the indwelling needle infusion switch is automatically turned off when output of the stored liquid is finished. According to the positive-pressure self-closing indwelling needle, the structure is simple and reasonable, process is simple and convenient to manufacture, operation is simple and convenient, the existing infusion specifications are conformed, the defects in the background technology are overcome, the risks in the background technology are overcome, and the problems of blood coagulation, thrombus formation or blockage in the use process of a venous indwelling needle are effectively solved.

The invention discloses a mixed injection optimization system for anti-riot water cannon vehicles, which includes a pulse water cannon mechanism, a combination of pulse damping pipelines, and a power device of a high-pressure injection mixing device. The high-pressure injection mixing device includes a high-pressure plunger pump, an injection pipeline, an outlet pipes and circulating water pipes, the power unit includes an engine, a main transmission shaft installed at the output end of the engine, and an auxiliary transmission shaft installed at the upper end of the engine; the system uses the main transmission shaft and the auxiliary transmission shaft to drive the high-pressure water pump respectively. Compared with the traditional hybrid vacuum suction structure, the power source that drives the high-pressure plunger pump has a simpler structure, clearer pipelines, and a more reliable overall structure, and can be used without reducing or affecting the original pipeline pressure. , let the water cannon spray farther, ensure the demand for long-distance injection of the mixture, thereby increasing the dispersal range of the anti-riot water cannon vehicle, enhancing the deterrent force of the anti-riot water cannon vehicle, and its economy and practicability are stronger.

The invention relates to a reactive free radical generation system, which comprises a main reaction chamber and a light source system, wherein the light source system is arranged in the main reaction chamber, and the main reaction chamber is provided with an inlet for inputting gases and liquids required by a reaction and gas outlets. According to the present invention, the design is simple, and the use is convenient; the design steps are simple, the application range is wide, and any systems requiring reactive oxygen free radicals can use the reactive free radical generation system; ozone is irradiated by an ultraviolet lamp to produce a large amount of reactive oxygen free radicals, such that the oxidation efficiency is improved, the energy consumption is effectively reduced, and the cost is saved; and through the design of the gas outlet, the generated reactive oxygen free radical can contact the gas-phase pollutants such as nitrogen oxides or organic volatiles and the like in the main gas flow pipeline within 0.1 s, and the free radical intermediate generated after the chain reaction can be prevented from the exposure to the ultraviolet lamp.