32 results about "Diffusion chamber" patented technology

This application relates to the field of swimming pool disinfection equipment technology, and in particular to a portable swimming pool disinfection dispenser, which includes a feeding assembly, a spraying assembly, a buoyancy device, a drive device, and a direction-changing assembly. The medicine storage tank is equipped with a dosing channel, and the buoyancy device surrounds the medicine storage tank to ensure buoyancy. The spraying assembly uses wind power via a guide vane to rotate the diffusion chamber, achieving uniform dispersion of the disinfectant. This application enhances stability and uniform dispersion of the disinfectant through the design of a rotary bearing, sealing ring, and regulating valve. Simultaneously, the use of wind power to drive the guide vane and rotate the diffusion chamber enables rotation control and convenient operation. This application solves the problems of complexity and high cost of existing equipment, providing a lightweight and economical swimming pool disinfection solution suitable for home and small swimming pool scenarios.

The invention discloses a monovalent cation selective separation membrane and a preparation method thereof, and belongs to the technical field of ion exchange membranes. The preparation method comprises the following steps: respectively dissolving a diamine monomer and an acyl chloride monomer in water and n-hexane to respectively obtain a water-phase solution and an oil-phase solution; fixing the porous base membrane in the middle of a central channel of a diffusion device, respectively pouring the water-phase solution and the oil-phase solution into diffusion chambers on the upper side and the lower side of the central channel, carrying out diffusion interface polymerization, taking out the membrane, washing with n-hexane, and drying to obtain the monovalent cation selective separation membrane. The preparation method of the monovalent cation selective separation membrane provided by the invention has the advantages of cheap raw materials, mild preparation conditions, simple operation and the like, so that the membrane preparation cost can be greatly reduced, and the existence of chloromethyl on the membrane makes the polyamide structure more stable. Meanwhile, the electrodialysis Na < + > / Me4N < + > and K < + > / Me4N < + > separation of the prepared monovalent cation selective separation membrane shows performance superior to that of a commercial CIMS membrane, and the monovalent cation selective separation membrane has wide application prospects in the fields of electronic-grade TMAH purification preparation and the like.

The present invention discloses a micro-nano bubble generating connector, comprising: a jet component, the jet component is provided with a gas-liquid access channel, a jet channel and a diffusion chamber connected in sequence, the gas-liquid access channel is provided with a first gas-liquid inlet for inputting a gas-liquid mixed fluid at one end away from the jet channel; the cross-sectional area of ​​the jet channel is smaller than the cross-sectional area of ​​the gas-liquid access channel and the diffusion chamber; and a bubbler, comprising at least one bubble channel, one end of the bubble channel is a second gas-liquid inlet, the other end is a gas-liquid outlet, the second gas-liquid inlet is connected to the diffusion chamber, and the cross-sectional area of ​​the bubble channel gradually increases from the second gas-liquid inlet to the gas-liquid outlet; a gas-liquid outlet joint is provided with a gas-liquid collecting chamber and a terminal connecting portion for connecting to a water outlet terminal, the gas-liquid collecting chamber is connected to the gas-liquid outlet. The micro-nano bubble generating connector can be conveniently connected to the water outlet terminal, does not require major adjustments to the cleaning equipment, is more convenient to use, and generates micro-nano bubbles with high efficiency and large quantity.

The utility model discloses a cascade large-pressure-rise ejector, and relates to the technical field of ejectors, the cascade large-pressure-rise ejector comprises a high-pressure cavity, a high-pressure fluid inlet is formed in the high-pressure cavity, a first mixing chamber is arranged in the high-pressure cavity, a low-pressure fluid nozzle is arranged at the head end of the high-pressure cavity, the tail end of the low-pressure fluid nozzle is located in the head end of the first mixing chamber, and the tail end of the low-pressure fluid nozzle is located in the head end of the second mixing chamber; a second mixing chamber is arranged at the tail end of the high-pressure cavity, the tail end of the first mixing chamber is located in the head end of the second mixing chamber, and a diffusion chamber is arranged at the tail end of the second mixing chamber. Therefore, the problems existing in a two-stage series connection mode are solved, meaningless kinetic energy loss caused by speed reduction boosting and then pressure reduction acceleration under the condition that the two ejectors are split is avoided, and the ejection capacity is improved.

The utility model discloses a transdermal diffusion experiment device which comprises a base, an anti-rotation limiting gasket and a pressing ring. A diffusion chamber is formed in the base, and a circle of step surface is arranged on the inner side wall of the base. The anti-rotation limiting gasket is arranged on the step face in a non-relative-rotation mode. The pressing ring is detachably installed above the anti-rotation limiting gasket. A liquid channel and an exhaust channel which are communicated with the diffusion cavity are formed in the outer wall of the base at intervals, the liquid channel extends to one side of the diffusion cavity from the outer wall of the base, and the bottom wall of the part, close to the diffusion cavity, of the liquid channel is flush with the bottom wall of the diffusion cavity. The exhaust channel extends to the outer wall of the base from the other side of the diffusion cavity, and the top wall of the part, close to the diffusion cavity, of the exhaust channel is flush with the top opening of the diffusion cavity. And a transdermal test membrane is detachably clamped between the opposite surfaces of the step surface and the anti-rotation limiting gasket. The transdermal diffusion experiment device disclosed by the utility model has the advantages of small volume of the diffusion chamber and convenience in use.

The utility model relates to water body oxygenation technical field especially, more particularly to a fan circulating water oxygenation equipment. Its technical scheme includes: pedestal, suction chamber and suction pipe, be equipped with the nozzle on the pedestal, be equipped with the suction chamber on the nozzle, the other end of suction chamber is equipped with the mixing chamber, the other end of mixing chamber is equipped with the diffusion chamber, the mixing chamber, nozzle, suction chamber and diffusion chamber constitute the jet structure, jet structure is used for gas water mixture, increases water body oxygen content, the bottom end suction inlet of suction chamber is equipped with suction pipe, the bottom end of suction pipe is equipped with the impurity removal structure, and the impurity removal structure is used for removing the impurity that suction pipe orifice filters. The utility model discloses through the jet structure and carries out the water body oxygenation circulation of lasting, has improved water body dissolved oxygen content, the impurity that automatic cleaning filter plate surface adheres, ensures the filtering effect of filter plate sustained and stable, avoids the equipment performance decline caused by the impurity blockage or accumulation.

An in vitro trans-dermal diffusion apparatus for gas exposure, including: a gas generator, an exposure chamber, an exhaust treating device, a sampling arm, a diffusion chamber, a liquid replenishment tank, and a sample bottle rack. The in vitro trans-dermal diffusion apparatus for gas exposure supports multiple diffusion chambers conducting gas exposure experiments simultaneously. The sampling port and replenishing port of the diffusion chamber are separated, enabling the rapid replenishment of fluids through a replenishment tank after sampling, which reduces the time the skin membrane is separated from the receptor fluid. The sampling arm of the in vitro trans-dermal diffusion apparatus for gas exposure, combined with a telescoping rod, allows the sampling needle to be inserted into the sampling port for sampling and can also be extended into a sample bottle to release the sample, minimizing the contact between the sample liquid and the air.

The present invention discloses a micro-nano bubble generation system, comprising: a gas-liquid mixer, which includes an air inlet channel, a liquid inlet channel and a mixing channel. One end of the mixing channel is connected to the air inlet channel and the liquid inlet channel, and the other end is a first gas-liquid outlet; a pump body, which is connected to the first gas-liquid outlet; and a bubble generation device, which includes a jet member and a bubbler. The jet member is provided with a gas-liquid access channel, a jet channel and a diffusion chamber. The gas-liquid access channel is provided with a first gas-liquid inlet connected to the pump body. The cross-sectional area of the jet channel is smaller than the cross-sectional areas of the gas-liquid access channel and the diffusion chamber. The bubbler includes at least one bubbling channel. One end of the bubbling channel is a second gas-liquid inlet, and the other end is a second gas-liquid outlet. The second gas-liquid inlet is communicated with the diffusion chamber, and the cross-sectional area of the bubbling channel gradually increases from the second gas-liquid inlet to the second gas-liquid outlet. In this micro-nano bubble generation system, through multiple gas-liquid mixing, it can generate water containing a large number of micro-nano bubbles, with a high bubble concentration and good effects.

To provide improved methods and compositions for treating cancers using antisense.SOLUTION: The present disclosure relates to compositions and methods for treating cancers using antisense (AS) nucleic acids directed against Insulin-like Growth Factor 1 Receptor (IGF-1R). The AS may be administered to the patients systemically, or may be used to produce an autologous cancer cell vaccine. The AS is provided in an implantable irradiated biodiffusion chamber comprising tumor cells and an effective amount of the AS. The chambers are irradiated and implanted in the abdomen of subjects and stimulate an immune response that attacks tumors distally. The compositions and methods disclosed herein may be used to treat many different kinds of cancer, e.g., glioblastoma.SELECTED DRAWING: None

The present invention discloses a system and method for measuring the in-situ gas diffusion coefficient and permeability of rocks. The measurement system includes: a diffusion and permeability measurement unit, which includes: a gas cylinder assembly, including a first target gas cylinder, a reference gas cylinder and a second target gas cylinder connected in parallel with each other; a first diffusion chamber and a second diffusion chamber, the first end of the first diffusion chamber is connected to the first output node, and the second end of the first diffusion chamber is connected to the input port of the high-temperature and high-pressure reactor; the first end of the second diffusion chamber is connected to the second output node, and the second end of the second diffusion chamber is connected to the output port of the high-temperature and high-pressure reactor; a gas chromatograph, configured to detect the gas content and composition information connected thereto; and a pressure difference sensor, configured to detect the pressure difference between a fourth common node and a fifth common node.

The invention discloses a rock in-situ gas diffusion coefficient and permeability determination system and method, and the determination system comprises a diffusion and permeability determination unit which comprises a gas cylinder assembly which comprises a first target gas cylinder, a reference gas cylinder and a second target gas cylinder which are connected in parallel; the first end of the first diffusion chamber is communicated with the first output node, and the second end of the first diffusion chamber is communicated with the input port of the high-temperature and high-pressure reaction kettle; the first end of the second diffusion chamber is communicated with the second output node, and the second end of the second diffusion chamber is communicated with the output port of the high-temperature and high-pressure reaction kettle; the gas chromatograph is configured to be used for detecting the content and component information of gas communicated with the gas chromatograph; and a pressure difference sensor configured to detect a pressure difference between the fourth common node and the fifth common node.

The embodiment of the utility model provides an ejector which comprises an ejector shell, and the ejector shell defines a negative pressure generation chamber and a diffusion chamber. The diameter of the negative pressure generating chamber decreases in the flowing direction, the diameter of the diffusion chamber increases in the flowing direction, the inner surface of the negative pressure generating chamber is formed by rotating a first generatrix around a transverse central axis, and the inner surface of the diffusion chamber is formed by rotating a second generatrix around the transverse central axis. At least one of the first bus bar and the second bus bar is an arc line protruding toward the transverse central axis. The ejector provided by the embodiment of the utility model can effectively eject the target fluid when the working fluid is high in flow or low in flow.

The invention relates to a low-pressure wide gas-liquid two-phase atomizing nozzle and a design method. The low-pressure wide gas-liquid two-phase atomizing nozzle is composed of an outer wall, a radial gas-phase inlet, a split liquid-phase inlet, a mixing cavity, a contraction accelerating cavity, a diffusion cavity and a nozzle outlet, and gas and liquid phases can be mixed in the nozzle and atomized to form fine mist spray to be sprayed out. According to the design method of the low-pressure wide-width gas-liquid two-phase atomizing nozzle, the optimal flow channel curved surface of the shrinkage acceleration cavity, the distribution angle of the shrinkage flow channel of the five-flow-channel diffusion cavity and the pressure working condition of the low-pressure wide-width gas-liquid two-phase atomizing nozzle under the given condition can be calculated. The gas-liquid two-phase atomizing nozzle has the advantages that liquid phase atomization is efficient and fine, the spraying flow and the fogdrop particle size are independently adjusted according to different operation scenes, the requirement for atomization pressure is low, atomization power consumption is low, atomization cost is low, and compared with a common gas-liquid two-phase atomizing nozzle, the number of the nozzles can be remarkably reduced.

The invention relates to a preheating module (10) comprising a dispersion chamber (11) and a diffusion chamber (12), the dispersion chamber comprising a unit (20) for distributing a gas mixture, the unit comprising an inlet (25) at a lower edge (17) and a plurality of inner walls (22) forming a flow path (21) for the gas mixture; the diffusion chamber is located downstream of and arranged above the dispersion chamber (11) and forms a stack together with the dispersion chamber. The flow path (21) of the gas mixture extends predominantly along a longitudinal axis (Y) and a transverse axis (Z) orthogonal to the stack axis (X), the dimension of the diffusion chamber (12) along the stack axis (X) differing by no more than 20% relative to the dimension of the dispersion chamber (11) along which stack axis.

The utility model discloses a cascade backflow ejector, and relates to the technical field of ejectors, the cascade backflow ejector comprises a nozzle, a first mixing chamber, a second mixing chamber, a diffusion chamber and a mixing outlet pipe which are sequentially arranged in the fluid flowing direction; the nozzle is located in the head end of the first mixing chamber, the tail end of the first mixing chamber is located in the head end of the second mixing chamber, the diffusion chamber is connected with the tail end of the second mixing chamber, the head end of the mixing outlet pipe is located in the tail end of the diffusion chamber, and water flows out of the tail end of the diffusion chamber. Mixed fluid which does not enter the mixed outlet pipe flows back into the first mixing chamber from a gap between the nozzle and the head end of the first mixing chamber, and low-pressure fluid enters the second mixing chamber from a gap between the tail end of the first mixing chamber and the head end of the second mixing chamber. Therefore, the problem that an existing ejector is poor in ejection effect is solved, the purposes of increasing the pressure-rise ratio and reducing the area ratio can be achieved, two stages are combined into a whole, the large-ejection-ratio ejection effect is achieved, kinetic energy loss is reduced, and efficiency is improved.

A device for determining radon concentration is provided. The device includes a diffusion chamber, that includes a number of openings that allow radon gas to enter and exit, and a radon sensing arrangement. The radon sensing arrangement includes at least one processing device and one or more detectors, arranged inside the diffusion chamber in such a way that no part of the diffusion chamber is located at a distance, perpendicular to the detector, of more than 20 mm from the closest part of a detector. The at least one processing device is arranged to determine the radon concentration by analyzing and processing the energy spectrum of alpha particles detected by the one or more detectors.

The present invention relates to the technical field of perforation completion and reservoir transformation, and in particular to a self-anchored deep-penetration sandblasting perforation and unblocking integrated device and a method of use. The technical scheme is as follows: an upper leather cup and a lower anchoring leather cup are provided on the middle and lower outer walls of the outer tube of the pump body, a hydraulic self-anchor is provided between the upper leather cup and the lower anchoring leather cup, a perforation nozzle is provided on the lower side of the lower anchoring leather cup, and a return sand liquid inlet is provided at the bottom of the outer tube of the pump body; a sand filter flow divider is provided on the top of the central tube assembly, the middle of the central tube assembly is connected to the outer tube of the pump body through a bridge-type flow guide, a nozzle, a diffusion chamber and a mixed liquid discharge flow channel are formed between the pump core and the inner wall of the central tube assembly, and the lower end of the mixed liquid discharge flow channel is connected to the mixed liquid outlet. The beneficial effects are: not only can the anti-creep function during sandblasting perforation be realized, but also deep-penetration sandblasting perforation can be realized, and the ejected hole wall surface is smooth and regular to avoid damaging the casing; it is easy to operate, simple and reliable in construction, and economical and efficient.

This invention discloses a device and method for efficient co-extraction of vanadium and chromium from vanadium slag, comprising a mixing tank, a slurry pump, a slurry processor, a slurry distributor, a heater, and a reactor connected in sequence. The slurry processor includes a cavity, a slurry inlet, a guide vane ring, a power nozzle, an air intake pipe, and a diffusion chamber nozzle. The cavity, from front to back, consists of a buffer chamber, a mixing chamber, and a diffusion chamber. The slurry inlet is located in the buffer chamber, and the air intake pipe is inserted into the mixing chamber. The guide vane ring and the power nozzle are connected from front to back and located between the buffer chamber and the mixing chamber, while the diffusion chamber nozzle is located between the mixing chamber and the diffusion chamber. The slurry pump is connected to the slurry inlet, the slurry distributor is connected to the diffusion chamber, and the air intake pipe is connected to a high-temperature air source. This invention's device and method achieve efficient co-extraction of vanadium and chromium at low temperature and under normal pressure, with a vanadium leaching rate of over 98% and a chromium leaching rate of over 95%.

The application discloses a monovalent cation selective separation membrane and a preparation method thereof, and belongs to the technical field of ion exchange membranes. A bisamine monomer and an acyl chloride monomer are respectively dissolved in water and n-hexane to obtain an aqueous solution and an oil solution. A porous base film is fixed in the middle part of a central channel of a diffusion device, the aqueous solution and the oil solution are respectively poured into diffusion chambers on the upper and lower sides of the central channel, interfacial polymerization is carried out, then the membrane is taken out, washed with n-hexane, dried, and a monovalent cation selective separation membrane is obtained. The preparation method of the monovalent cation selective separation membrane has the advantages of low raw material cost, mild preparation conditions and simple operation, so that the membrane preparation cost can be greatly reduced, and the existence of chloromethyl on the membrane makes the polyamide structure more stable. Meanwhile, the electrodialysis Na + / Me4N + , K + / Me4N + Separation performance of the prepared monovalent cation selective separation membrane is superior to that of a commercial CIMS membrane, and has a wide application prospect in the fields of electronic-grade TMAH purification preparation and the like.

The invention discloses a device and a method for determining a gas diffusion coefficient in rock, and belongs to the technical field of rock performance determination. The device comprises a core holder, sampling mechanisms, a gas analyzer, a gas source and a pressure gauge, a rock sample is clamped in the middle of the core holder, the two sampling mechanisms are symmetrically arranged at the two ends of the rock sample respectively, and each sampling mechanism comprises a first blind pipe, a cylinder, a second blind pipe and a sampling cavity. The opening end of the first blind pipe directly faces the rock sample and is hermetically connected with the end face of the rock sample to form a diffusion chamber. According to the device for measuring the diffusion coefficient of the gas in the rock, the single sampling cavity can be isolated from the diffusion chamber, the pressure of the diffusion chamber is not influenced in the isolation process, undisturbed sampling can be realized, the influence on the pressure of the diffusion chamber is reduced, and the accuracy of a test result is improved.

The utility model discloses a coal mine ventilation device relates to mine ventilation technical field, including the front and rear arrangement's air intake head and air outlet head, and the air intake head and air outlet head are connected with the air distribution pipe, and the air intake head is connected coal mine downhole pressure system through the pipeline, provides high pressure air, and the air outlet head is connected return air lane through the pipeline, and exhausts mixed gas, and the air distribution pipe includes suction chamber, throat and diffusion chamber, and suction chamber, throat and diffusion chamber constitute venturi effect, and the entrance position of suction chamber is provided with the nozzle, and the nozzle is opposite the throat jet, and the diffusion chamber includes gradually expanding section and export section who sets gradually from front to back, and the cross section area of gradually expanding section is increasing along the flow direction, and extends to export section, and the top of suction chamber is provided with the air inlet, and the air inlet communicates outside and suction chamber. Through high pressure jet flow produces the negative pressure, and the initiative suction blind lane dirty air, need not mechanical rotating part, fundamentally eliminates the explosion risk, improves ventilation efficiency and reduces energy consumption simultaneously.

The present application relates to oil and gas field and coal bed gas field drainage technology field, especially relates to a kind of floating pump core ring jet flow pump and use method.The technical scheme is: install low-density floating pump core in the inner cavity of pump barrel, form annular gap between low-density floating pump core and the inner wall of pump barrel, the lower side of annular gap is equipped with formation liquid suction port, the lower side of formation liquid suction port is annular throat, the lower side of annular throat is equipped with diffusion chamber, the bottom of diffusion chamber is equipped with pump core support seat, the lower side of diffusion chamber is equipped with mixed liquid outlet, diffusion chamber is communicated with mixed liquid discharge chamber.The beneficial effect is: because adjustment reduces the overall density of low-density floating pump core, the power hydraulic pressure and the amount of low-density floating pump core can be reduced, and the operation cost is reduced;In addition, the structure of the low-density floating pump core of the present application is simple, and the annular jet flow structure is formed between the pump barrel, which not only increases the drainage liquid volume, but also makes the working condition of the suction medium more extensive, and the manufacturing cost is also lower.

The application discloses a quality control method for a swelling and pain relieving composition, which comprises the following steps: A, preparing a receiving side solution; B, using a YUS chamber to prepare a test sample solution, fixing rat skin in a 0.5 cm2 diffusion chamber, with the outer epidermis side as a drug administration side, adding a swelling and pain relieving extract to the drug administration side container, with the inner epidermis side as a receiving side, adding a receiving liquid to the receiving side container to two-thirds of the container, finally covering the top of the two containers with a fresh-keeping film, opening a constant temperature water bath to maintain a constant temperature of 37.5 DEG C, waiting for 36-48 hours, passing through a 0.22 mu m microporous filter membrane, taking the filtrate, and obtaining the test sample solution; C, using a liquid chromatography program to separate and then detecting by a UV detector. The method relies on a high performance liquid chromatograph, extracts transdermal components through a YUS chamber through an isolated rat skin, and forms a new type of quality control method for a swelling and pain relieving composition.

The present invention discloses a micro-nano bubble generating device, comprising: a jet component, the jet component is provided with a gas-liquid access channel, a jet channel and a diffusion chamber connected in sequence, the gas-liquid access channel is provided with a first gas-liquid inlet for inputting a gas-liquid mixed fluid at one end away from the jet channel; the cross-sectional area of ​​the jet channel is smaller than the cross-sectional area of ​​the gas-liquid access channel and the diffusion chamber; and a bubbler, comprising at least one bubble channel, one end of the bubble channel is a second gas-liquid inlet, the other end is a gas-liquid outlet, the second gas-liquid inlet is connected to the diffusion chamber, and the cross-sectional area of ​​the bubble channel gradually increases from the second gas-liquid inlet to the gas-liquid outlet. The micro-nano bubble generating device first accelerates the flow rate through the jet channel to cause the gas to be violently mixed, and then expands the water-gas mixing volume to allow the high-speed flowing water to impact the gas to generate bubbles, thereby generating more micro-nano bubbles and higher efficiency.

An electrochemical cell system includes a stack of electrochemical cells, and a fluid ejector configured to mix a first fluid stream and a second fluid stream to form a mixed fluid stream that is provided to the stack. The fluid ejector includes a suction chamber having a secondary inlet configured to receive the second fluid stream, an inlet nozzle configured to inject the first fluid stream into the suction chamber, a mixing chamber fluidly connected to the suction chamber and configured to mix the first fluid stream and the second fluid stream to form the mixed fluid stream, and a diffusion chamber fluidly connected to the mixing chamber and having an outlet that is fluidly connected to the stack.

The embodiment of the application provides a hydrogen diffusion experiment device, and relates to the technical field of hydrogen storage. The hydrogen diffusion experiment device comprises: a core holder, the inside of the core holder is provided with a first diffusion chamber, a sample chamber and a second diffusion chamber, the first diffusion chamber and the second diffusion chamber are respectively arranged on the opposite sides of the sample chamber, and the sample chamber is used for accommodating a geological sample; a hydrogen supply mechanism connected with the second diffusion chamber; a first gas supply mechanism connected with the first diffusion chamber; and a detection mechanism connected with the first diffusion chamber and the second diffusion chamber, and used for detecting the gas concentration in the first diffusion chamber and the second diffusion chamber. The hydrogen diffusion experiment device can replace different geological samples in the core holder, carry out an experiment on the hydrogen diffusion characteristics in a room, and obtain key parameters such as diffusion coefficients under different geological structures, gas concentrations and temperature and pressure conditions, so as to provide reliable data support for hydrogen storage library site selection.

The utility model provides a methanol synthesis steam ejector. The methanol synthesis steam ejector comprises a shell, a nozzle, a suction pipe, a plurality of pushing assemblies and a driving mechanism. The shell is provided with a suction chamber, a throat pipe and a diffusion chamber which are sequentially communicated. One end of the nozzle penetrates into the suction chamber and is fixedly connected with the shell. One end of the suction pipe is communicated with the lower portion of the suction chamber, and the end of the suction pipe is opposite to the end, located in the suction chamber, of the nozzle. The multiple pushing assemblies are arranged in the suction chamber in the mode of rotating around the axis of the nozzle. The push plate is gradually used for pushing gas or liquid appearing at the end of the suction pipe to move along the inner wall of the suction chamber. The driving mechanism is used for driving the pushing assembly to rotate. According to the utility model, the pushing assembly pushes the gas and liquid at the pipe orifice of the suction pipe to move along the inner wall of the suction cavity, so that the negative pressure formed on the periphery of the steam sprayed by the nozzle is fully utilized, and the efficiency is improved.

The invention provides a device for enriching non-culturable microorganisms in organic matter compost based on a bidirectional diffusion principle, and belongs to the technical field of environmental microorganism technology and organic solid waste recycling. The problems of high liquid leakage risk, low material exchange efficiency and complicated operation in the existing diffusion chamber technology are solved. The device comprises an inner chamber, an outer chamber, a composite membrane system and a culture medium, the inner chamber and the outer chamber are both of a cylindrical structure, the inner chamber is arranged in the outer chamber, the top of the inner chamber penetrates through the top of the outer chamber and extends to the outer side of the outer chamber, and a plurality of inner chamber holes are evenly distributed in the side wall of the part, located in the outer chamber, of the inner chamber; the composite membrane system comprises a PTFE non-woven fabric composite hydrophobic membrane, the PTFE non-woven fabric composite hydrophobic membrane wraps the outer side of the side wall of the part, located in the outer chamber, of the inner chamber, the culture medium is arranged in the inner chamber, and straw compost is arranged in the outer chamber. The device is mainly used for microbial culture.

The present invention discloses a nozzle based on multi-cavity combined reflux feedback regulation, which belongs to the field of nozzle technology. It includes a first mixing chamber, a first reflux diffusion chamber and a second mixing chamber connected in sequence; the first mixing chamber is provided with a liquid inlet hole and an air inlet hole, and the air inlet hole and the liquid inlet hole are provided with an air inlet pipe and a liquid inlet pipe respectively; the two ends of the first reflux diffusion chamber are provided with a mixing feed hole and a mixing discharge hole respectively, and a main channel and a reflux channel are provided between the mixing feed hole and the mixing discharge hole, and the two ends of the main channel are aligned with the mixing feed hole and the mixing discharge hole, and the two are connected, the reflux channels are symmetrically arranged on both sides of the main channel, and the reflux channels connect the head and tail of the main channel, one end of the second mixing chamber is connected to the first reflux diffusion chamber, and the other end is provided with a spray pipe. This technical solution is used to solve the problem that the contact and collision effect of air and liquid in the nozzle in the prior art is poor, which affects the atomization effect of the nozzle.

The present invention provides a device for simulating atmospheric chemical reactions in real time, comprising a main reactor, which comprises, from the outside to the inside, an outer negative pressure refrigeration chamber, a middle transverse reaction chamber, and an inner sample gas permeation diffusion chamber, a polymethacrylic plate and a light reflecting plate being arranged on the outer negative pressure refrigeration chamber, a negative pressure pump, an electrostatic eliminator, a heat exchanger, and a turbulent fan being arranged in the outer negative pressure refrigeration chamber, a cylindrical membrane cabin made of polytetrafluoroethylene being arranged on the middle transverse reaction chamber, a drive assembly for driving the middle transverse reaction chamber to rotate being arranged on the axial direction of the middle transverse reaction chamber, a permeable membrane being arranged on the inner sample gas permeation diffusion chamber, the permeable membrane being in contact with the interior of the middle transverse reaction chamber, an airflow assembly being connected to the front and rear ends of the inner sample gas permeation diffusion chamber, a refrigeration system, a detection system, a seed aerosol injection system, and a control box being connected to the main reactor. The three-layer structural design of the present invention solves the problem that current technologies cannot simulate atmospheric chemical reactions continuously and in real time, significantly improves the gas exchange rate, reduces aerosol wall loss, and fully and realistically simulates the chemical reaction process of the ambient atmosphere.