43results about How to "Reduce microwave leakage" patented technology

A lamp assembly comprising one or more lamp clusters. Each lamp cluster comprises one or more electrodeless UV lamps which are excited by microwaves emitted from a microwave generator. The microwave generator and power supply are enclosed within a housing that is integral with the lamp clusters. The lamp clusters are wholly surrounded by a waveguide. The waveguide, comprising a flange and a distal end cap connected by a mesh, forms an enclosure. The waveguide is essentially UV transparent to allow UV light to pass through but effectively opaque to microwaves in order to substantially contain the microwaves within the waveguide enclosure.

A vacuum microwave drying apparatus, includes: a tank (1); a tank enclosure (2), which defines an accommodate space with the tank; a vacuum system, which is communicated with the accommodate space through a vacuum pipe (5); a continuous feed-in mechanism (9), including a feed-in pipe (902) communicated with the accommodate space, the continuous feed-in mechanism (9) sending materials into the accommodate space through the feed-in pipe (902) continuously; a continuous feed-out mechanism (10), which sends the materials out of the accommodate space continuously; at least two layers of material sending mechanisms (3), each of which is arranged in the accommodate space in parallel along the longitudinal direction of the tank, to send the materials from the continuous feed-in mechanism (9) into the continuous feed-out mechanism (10); and a plurality of microwave heating devices (4), each of which has a microwave feed-in port (403), which is located in the accommodate space, to send microwave to the accommodate space, the microwave being used to dry the materials which is sent by the material sending mechanism (3). The vacuum microwave drying apparatus can reduce the occupied space, and can perform a continuous drying operation.

The invention discloses a 75 kW continuous wave magnetron. The 75 kW continuous wave magnetron comprises a positive pole cavity combination (1), a negative pole lead wire combination (2), a water pipe (3) which is connected with the positive pole cavity (1), an output window combination (4) which is connected with the negative pole cavity combination (1), an antenna combination (5) which is fixed on the negative pole cavity combination (1), and an inner pole shoe (6) which is fixed at one end of the positive pole cavity combination (1), wherein the antenna combination (5) is located inside the output window combination (4). The continuous wave magnetron is reasonable in structural design, high in power, high in output efficiency, less in microwave leakage, and high in safety performance. Particularly, due to the fact that a negative pole structure of a fan-shaped resonator system structure with high characteristic impedance is adopted and an n-shaped water line cooling structure is adopted on a negative pole, heat dissipation effect is better, light striking probability is less, working is stable, structure is novel, and the magnetron is suitable for being used in a high-power microwave heating device in industries.

The invention discloses a microwave processing device for the dump leaching uranium ores. The device uses microwave to carry out irradiation to dump leaching uranium ores, due to the fact that differences exist among the microwave temperature rising effects of different minerals inside the uranium ore particles, heat stress differences are generated among the different minerals inside the uranium ore particles, the grain boundaries of the different minerals inside uranium ore particles break and the cracks inside the particles extend, therefore the poriness of the uranium ore particles is increased, the permeability of the inner portions of the uranium ore particles is improved, the dissociation degree of the uranium ores is improved, the leaching efficiency of the dump leaching of the uranium ores is improved, and a leaching period is shortened. The whole equipment comprises 16 microwave units, a material conveying system, a support, a temperature detecting and controlling system and a microwave suppressor. When the microwave processing device for the dump leaching uranium ores is used to process the dump leaching uranium ores, the microwave processing device has the advantages of being good in the matching of microwave power and the uranium ores, low in processing energy consumption, large in processing quantity, stable in material conveying, and small in microwave leakage, the poriness of the uranium ores and the dissociation degree of the uranium ores are further improved, the leaching efficiency is further improved, and the leaching period is further shortened and the like. The microwave processing device for the dump leaching uranium ores is also suitable for the processing of dump leaching gold ores, dump leaching copper ores and other dump leaching ores, and has obvious effect in increasing poriness of ore particles, improving the permeability of the inner portion of the ore particles, improving the dissociation degree of useful ores, improving leaching efficiency, and shortening leaching efficiency.

The invention discloses a 2450-MHz high-power continuous-wave magnetron and a preparation method thereof. The 2450-MHz high-power continuous-wave magnetron comprises an anode cavity combination unit (1), a cathode outgoing line combination unit (2), an output window combination unit (3) connected with the anode cavity combination unit (1), and an output antenna (4) fixed at the anode cavity combination unit (1); the other end of the output antenna (4) is arranged inside the output window combination unit (3); and the anode cavity combination unit (1) is connected with a cavity cooling water inlet-outlet pipe (5). The structure of the provided continuous-wave magnetron is designed reasonably; the power of the magnetron is high and the output power can reach over 30 KW; the service life can reach more than 5000 hours; the microwave leakage is less; and the security performance is high. Besides, according to the preparation method of the continuous-wave magnetron, lots of experiment screening is carried out; and the method has the advantages of reasonable process design and high operability. Moreover, the prepared magnetron with characteristics of high gas tightness, a high vacuum degree, low sparking probability and stable performance enables various defects existing in the prior art to be overcome.

The invention provides a microwave irradiation chamber, a microwave irradiation system and a microwave irradiation and real-time observation method. The microwave irradiation chamber comprises a shell and a shielding component, wherein a cuboid-shaped cavity is formed in the shell, a microwave receiving interface and a microwave absorption interface are arranged in the central positions of the two end walls of the shell, respectively, a first opening is formed in the central position of the top wall of the shell, and a second opening is formed in the central position of the bottom wall; the shielding component covers the first opening of the shell, and the center of the shielding component is provided with a through hole. According to the technical scheme of the invention, the microwave irradiation chamber can be directly connected into a real-time observation and analysis instrument to carry out biological index observation in real time, so that the microwave leakage is slight, and the cross-sectional area of the microwave irradiation chamber is adjustable, and therefore, the compound irradiation of microwaves with different frequencies can be realized.

The invention relates to a magnetron and discloses a magnetron cathode cable microwave leakage protective device for preventing microwave leakage by use a coaxial structure and a wave-absorbing material. The magnetron cathode cable microwave leakage protective device comprises a junction surface, a cathode cable, a sleeve and a short-circuit plate; the junction surface is mounted at the starting end of the sleeve, while the short-circuit plate is mounted at the tail end of the sleeve; the cross section of the sleeve is circular; a cooling fin is mounted on the sleeve; the cathode cable penetrates through the short-circuit plate along the central axis of the sleeve to be connected with the junction surface; the wave-absorbing material is arranged between the sleeve and the cathode cable. The magnetron and discloses a magnetron cathode cable microwave leakage protective device has the beneficial effects that the microwave energy leaked by the magnetron cathode cable is absorbed thoroughly by the wave-absorbing material arranged between the sleeve and the cathode cable in the transmission process of the coaxial transmission line, the converted heat is dissipated to the surrounding space by the cooling fin, and therefore, the normal work of the coaxial line transmission system is guaranteed, the reliability of the protective device is improved and the microwave leakage is stopped.

The invention discloses a microwave log-drying device, which comprises a box body, a power machine, a control system and an electrical control cabinet. The inner top part of the box body is provided with a microwave generating source, the lower part of the microwave generating source is provided with a microwave acting cavity, the microwave acting cavity is internally provided with a plurality of rows of rollers in the vertical direction, and the rollers can rotate forwards and reversely. A power machine chamber is arranged under the rollers, and the power machine used for driving the rollers to rotate is arranged in the power machine chamber; and the upper side of the box body is provided with a fan, and an induced air port of the fan is communicated with the microwave acting cavity. Microwave energy is adopted to dry logs, the microwave log-drying device has the advantages of uniform heating and high efficiency, the thermal efficiency is high, power consumption can be minimized, and automated control can be realized easily. Since the logs can be rotated forwards and reversely, every side face of the logs can be heated uniformly, and good heating effects can be achieved.

The invention relates to a tunnel type multi-mode microwave resonant cavity with a rotation function. The microwave resonant cavity consists of a hollow hexagonal prism, HFSS (High Frequency Structure Simulation Software) is used for simulating and positioning the positions of four microwave energy feedback holes, four microwave tubes with total 4KW independently feed microwave energy from different directions, the energy distribution of the microwave resonant cavity is improved through electromagnetic wave energy feedback simulation, and microwave energy focus points in the resonant cavity are obviously reduced; meanwhile, a pipeline installation position is designed on the middle position of the resonant cavity, pipelines made of low-microwave adsorption materials including ceramics and glass can be assembled; and the pipeline which finishes being installed can rotate under the driving of a rotation device, and materials in the pipeline can be subjected to even microwave radiation. In the field of environment protection, the microwave resonant cavity is suitable for processing agriculture and forestry waste materials, waste rubber, waste plastics, waste printing circuits and the like, can carry out intermittent batch processing, can be combined with other piece of conveying processing equipment to realize fluidization operation, has the advantages of simple structure and high practical application value and is favorable for industrial popularization.

The invention provides a tunnel type nonwoven fabric processing system and a control method thereof. The tunnel type nonwoven fabric processing system comprises an unwinding machine, a spraying mechanism, a microwave heating tunnel and a conveying belt, wherein the unwinding machine, the spraying mechanism and the microwave heating tunnel are sequentially arranged, microwave inhibitors are arranged at two ends of the microwave heating tunnel respectively, and a microwave generator is arranged in the microwave heating tunnel; the unwinding machine is used for automatically unwinding to-be-processed nonwoven fabric, the spraying mechanism is sued for spraying a solution to the unwound nonwoven fabric, and the conveying belt penetrates through the microwave heating tunnel and the microwave inhibitors and is used for conveying the nonwoven fabric. The solution is sprayed to the nonwoven fabric to reduce the dosage of the solution, meanwhile, the microwave inhibitors are used for reducing the microwave leakage to meet the continuous production requirement, the production cost is reduced and the production safety is improved.

The invention relates to a device for suppressing the electromagnetic leakage of a microwave oven, which is characterized by comprising a box-gap shielding component, a box-hole shielding metal wire mesh, a metal isolating cover (15) and a metal isolating wall (19). The box-gap shielding component is a one-sided sawtooth-shaped beryllium copper reed (1); the box-hole shielding metal wire mesh is arranged on the round-hole areas on two sides of the wall of the microwave oven; the metal isolating cover (15) is assembled together with assembling box of a low-voltage circuit unit through two screw holes at the upper end and the bottom and hereby covers the low-voltage circuit unit; and the metal isolating wall (19) is arranged at the bottom of a microwave stirrer (7) at the tail end of a microwave launching and transmitting channel (18). Due to the adoption of the device, the difficulty of shielding the gap of the shell of the microwave oven is reduced, 90% of high-frequency electromagnetic waves are suppressed from leaking outside, and the purpose of preventing the electromagnetic leakage is achieved.

The invention discloses a melamine foam uniform foaming device and belongs to the field of microwave foaming. The foaming device includes an oven body and multiple sets of microwave devices, wherein the front and rear side walls of the oven body are separately provided with a feeding door and a discharging door. Each set of microwave device includes a microwave source and a wave conduit, wherein the microwave source is arranged at one end of the wave conduit, the wave conduit is divided into a first branch pipe and a second branch pipe by a power splitter, the first branch pipe is arranged onthe top wall of the oven body, the second branch pipe is arranged outside the bottom wall of the oven body, top microwave feeding mouths are arranged on the connection surface between the first branchpipe and the oven body, bottom microwave feeding mouths are arranged on the connection surface between the second branch pipe and the oven body, and the top microwave feeding mouths and the bottom microwave feeding mouths are staggered in the length and width directions of the oven body. The melamine foam uniform foaming device has the advantages of good matching between the microwave feeding mouths, low microwave reflection rate, uniform energy density, good coupling with materials, high heating efficiency, small microwave leakage, safe use and the like.

The invention discloses a microwave electrodeless ultraviolet lamp device, which belongs to the technical field of microwaves. The microwave electrodeless ultraviolet lamp device comprises a radiation rod, a metal mesh cover and a lamp body; the lamp body is sleeved in the metal mesh cover; the radiation rod is sleeved in the lamp body; the lamp body comprises an inner wall layer and an outer wall layer; an interlayer is arranged between the inner wall layer and the outer wall layer; a filler is sealed in the interlayer; and a microwave feed-in space is arranged between the inner wall layer and the radiation rod. The microwave electrodeless ultraviolet lamp device is compact in structure, high in power, long in service life, capable of uniformly radiating ultraviolet light in all directions, high in working efficiency, capable of reducing microwave leakage and safer and more reliable.

In the invention, a microwave heating device is divided into several heating modules connected in series along a Z axis. Only a fundamental mode TE10 mode is propagated in different microwave feedingwaveguides in each module, and the electric field direction only has an X-axis component. The working microwaves in the different microwave feeding waveguides in each heating module are coherent and share the same phase, and the isolation degree between the working microwave feeding waveguides of different heating modules is very high. Non-coherent microwave sources can be employed in different heating modules, or coherent microwave sources can be employed in different heating modules arranged along the Z axis, so the working microwaves in microwave feeding waveguides belonging to different heating modules which are aligned and adjacent along the Z axis have an equal amplitude and inverted phases, and TEn0 waves which are propagated in a -Y direction from top to bottom and along a Y axis from bottom to top are excited in a heating cavity composed of cavities belonging to different heating modules, n is an integer and is greater than or equal to 2. The device can be used for heating various materials or speeding up chemical reactions.