CN211813554U - Microwave radiator and system - Google Patents
Microwave radiator and system Download PDFInfo
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- CN211813554U CN211813554U CN201921814014.1U CN201921814014U CN211813554U CN 211813554 U CN211813554 U CN 211813554U CN 201921814014 U CN201921814014 U CN 201921814014U CN 211813554 U CN211813554 U CN 211813554U
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Abstract
The utility model provides a microwave radiator relates to microwave equipment technical field. The microwave radiator comprises: the high-voltage power supply, the magnetron, the waveguide horn and the radiation window are sequentially connected, and the radiation window is arranged at one end, far away from the waveguide, of the waveguide horn. The utility model provides a current microwave source area of radiation little, the inhomogeneous problem of radiation.
Description
Technical Field
The utility model relates to a microwave equipment technical field particularly, relates to a microwave radiator and system.
Background
The industrial wastewater comprises production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. The industrial wastewater has various types and complex components. For example, the waste water from electrolytic salt industry contains mercury, the waste water from heavy metal smelting industry contains various metals such as lead and cadmium, the waste water from electroplating industry contains various heavy metals such as cyanide and chromium, the waste water from petroleum refining industry contains phenol, and the waste water from pesticide manufacturing industry contains various pesticides. Because industrial wastewater contains various toxic substances and pollutes the environment, the environment is harmful to human health, so that the industrial wastewater is developed to be comprehensively utilized and turn the harmful into the beneficial, and can be discharged after being treated by adopting corresponding purification measures according to the components and the concentration of pollutants in the wastewater.
Under the condition that water and air exist, the microwave catalyst absorbs electromagnetic waves to generate electron and electron hole pairs, oxyhydrogen electrons required by oxidative degradation are generated through a microwave catalytic reaction, and the oxyhydrogen electrons are subjected to oxidative degradation with phenolic organic matters and intermediate products in a reaction system, so that the phenolic organic matters are mineralized into inorganic matters such as carbon dioxide, water and the like, and the effect of complete degradation is achieved. However, when the existing microwave is used for treating wastewater, the penetration depth of the microwave is not enough when the microwave is transmitted in polar liquid, and the microwave radiation area is small and the radiation is not uniform.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a microwave radiator to the not enough among the above-mentioned prior art to solve the problem of current microwave source radiation area little, the inhomogeneous problem of radiation.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a microwave radiator, including: the high-voltage power supply, the magnetron, the waveguide horn and the radiation window are sequentially connected, and the radiation window is arranged at one end, far away from the waveguide, of the waveguide horn.
Preferably, the radiation window comprises a metal mesh, a safety medium layer and a filter layer, wherein the metal mesh, the safety medium layer and the filter layer are sequentially spirally arranged by taking the center of the radiation window as a center and are sequentially far away from the center of the radiation window.
Preferably, the thicknesses of the metal mesh are sequentially reduced and the thicknesses of the safety medium layer and the filter layer are sequentially increased from the center of the radiation window to the edge of the radiation window.
Preferably, the connection between the waveguide and the horn is provided with a groove, the connection between the horn and the waveguide is provided with a protrusion, and the groove and the protrusion are matched with each other.
Preferably, a sealing rubber strip is arranged between the groove and the bulge.
Preferably, a connection piece is provided between the waveguide and the horn.
Preferably, the connecting piece is made of a material that is permeable to microwaves and non-absorbing to microwaves.
Preferably, the radiation window is detachably and fixedly connected with the horn.
In a second aspect, the present invention further provides a microwave radiation system, which includes a plurality of microwave radiators according to the first aspect.
The utility model has the advantages that: an embodiment of the utility model provides a microwave radiator, include: high voltage power supply, magnetron, waveguide loudspeaker and radiation window, high voltage power supply, magnetron, waveguide and waveguide loudspeaker connect gradually, and the microwave can transmit in proper order, and under waveguide loudspeaker's effect, the microwave radiation area increase to can radiate and can be even some, in addition, the radiation window sets up the one end of keeping away from the waveguide at waveguide loudspeaker, and the radiation window can make microwave radiation more even.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a microwave radiator according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the distribution of the microwave source at the top of the microwave radiator according to an embodiment of the present invention;
fig. 3 is a schematic view of a microwave radiation system according to an embodiment of the present invention.
Icon: 1-high voltage power supply, 2-magnetron, 3-waveguide, 4-waveguide horn, 5-radiation window, 501-metal mesh, 502 safety medium layer and filter layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic view of a microwave radiator provided by an embodiment of the present invention, fig. 2 is a schematic view of a microwave source distribution at the top of the microwave radiator provided by an embodiment of the present invention, and fig. 3 is a schematic view of a microwave radiation system provided by an embodiment of the present invention. The microwave radiator provided by the embodiment of the present invention will be described in detail with reference to fig. 1 to 3.
Fig. 1 is a schematic view of a microwave radiator according to an embodiment of the present invention, as shown in fig. 1, the microwave radiator includes: the high-voltage power supply, the magnetron, the waveguide horn and the radiation window are sequentially connected, and the radiation window is arranged at one end, far away from the waveguide, of the waveguide horn.
The high-voltage power supply provides power for the microwave source, a pulse width modulation technology and advanced electronic circuits and elements are adopted, the output is free from power grid fluctuation interference, protection measures such as zero position, overcurrent, breakdown and overvoltage are provided, the overcurrent, breakdown and overvoltage protection circuit can act rapidly, and equipment and personnel safety is effectively guaranteed. The volume and the weight are light, and the device is suitable for field use.
A magnetron is an electric vacuum device used to generate microwave energy. Essentially a diode placed in a constant magnetic field. Under the control of the constant magnetic field and the constant electric field which are vertical to each other, electrons in the tube interact with the high-frequency electromagnetic field to convert energy obtained from the constant electric field into microwave energy, thereby achieving the purpose of generating the microwave energy. Meanwhile, the magnetron is a consumable and is easily aged and demagnetized.
The magnetron consists of a sealed vacuum tube with a cylindrical central cathode (electron source) placed inside a cylindrical anode, the electrons being attracted by an electrostatic field to the anode. A steady magnetic field along the axis of the vacuum tube causes the electrons to deviate from their radial path, rotating around the cathode, producing oscillations in the microwave frequency. The method is widely used for radar generators.
A waveguide refers to any linear structure that transmits electromagnetic waves between its ends.
The waveguide horn is mounted at the waveguide port for transmitting the waveguide.
The high-voltage power supply, the magnetron, the waveguide and the waveguide horn are connected in sequence to form the microwave source.
The radiation window can be arranged at one end of the waveguide horn far away from the waveguide port and is detachably and fixedly connected with the waveguide horn.
The radiation window can be fixed at one end of the waveguide horn far away from the waveguide port through a screw, and the shape of the radiation window can be matched with that of one end of the waveguide horn far away from the waveguide.
The radiation window may be used for uniform microwaves.
In this embodiment, the microwave radiator includes: high voltage power supply, magnetron, waveguide loudspeaker and radiation window, high voltage power supply, magnetron, waveguide and waveguide loudspeaker connect gradually, and the microwave can transmit in proper order, and under waveguide loudspeaker's effect, the microwave radiation area increase to can radiate and can be even some, in addition, the radiation window sets up the one end of keeping away from the waveguide at waveguide loudspeaker, and the radiation window can make microwave radiation more even.
Preferably, as shown in fig. 2, in order to make the microwaves radiated by the microwave source more uniform, the radiation window includes a metal mesh, a safety medium layer, and a filter layer, which are sequentially spirally arranged centering on the center of the radiation window and sequentially distant from the center of the radiation window.
The metal net, the safety medium and the filter layer are distributed in a ring shape.
The metal mesh can block microwaves and reduce microwave leakage.
The thickness of the metal net can be more than 1 mm, and the diameter of the mesh of the metal net is less than mm.
The liquid-proof safety medium layer can be made of materials with the lowest relative dielectric constant and the lowest loss tangent, for example, the liquid-proof safety medium layer can be made of silicon-based high polymer materials, carbon-doped silicon oxide-based materials, polyimide, polybenzoxazine, polysiloxane, polyamide and other materials with low dielectric constants.
Relative permittivity, a physical parameter that characterizes the dielectric or polarization properties of a dielectric material. The value is equal to the ratio of the capacitance of the capacitor with the same size made by taking the predicted material as the medium and taking the vacuum as the medium, and the value is also the representation of the power storage capacity of the material. Also known as relative permittivity. The relative dielectric constants of different materials differ at different temperatures.
The dielectric loss tangent is a physical quantity that characterizes the magnitude of dielectric loss of a dielectric material after an electric field is applied, and is the energy consumed by the dielectric in converting electrical energy into thermal energy (in the form of heat generation) per unit volume in unit time. A physical quantity characterizing the magnitude of dielectric loss of a dielectric material upon application of an electric field.
In addition, the thickness of the liquid-barrier safety medium layer can be more than 1 mm.
The filter layer can effectively reduce microwave reflection and enhance the microwave radiation effect.
In particular, the filter layer reduces 80% of the microwave reflection to 5%.
In addition, the relative permittivity of the filter layer may be determined by the relative permittivity of the liquid outside the radiation window and the relative permittivity of the gas within the radiation window.
The loss tangent of the filter layer may be as small as possible.
The filter layer may be solid or liquid and when the filter layer is liquid, the relative permittivity of the housing in which the liquid is contained should be as close as possible to the relative permittivity of the liquid outside the radiation window.
Preferably, for uniform microwave intensity, the thicknesses of the metal mesh are sequentially decreased and the thicknesses of the safety medium layer and the filter layer are sequentially increased from the center of the radiation window to the edge of the radiation window.
The intensity of the microwave gradually weakens from the center of the radiation window to the edge of the radiation window, so the thickness of the metal mesh can be reduced in sequence, and the thicknesses of the safety medium layer and the filter layer are increased in sequence.
Preferably, in order to reduce microwave leakage, a groove is arranged at the joint of the waveguide and the horn, a protrusion is arranged at the joint of the horn and the waveguide, and the groove and the protrusion are matched with each other.
The groove of the waveguide and the protrusion of the horn enable the waveguide and the waveguide horn to be connected more tightly, the possibility of microwave leakage is reduced, the possibility of weakening of microwave intensity is further reduced, and the liquid treatment speed of the microwave is accelerated.
Preferably, in order to further reduce microwave leakage, a sealing rubber strip is arranged between the groove and the bulge.
The sealing rubber strip can further seal the waveguide and the waveguide horn.
Preferably, a connection piece is provided between the waveguide and the horn for good processing and flexibility of use.
It should be noted that, because the microwave radiator needs to be put into liquid when in use, the waveguide and the horn must be well connected, so that the microwave energy can be transmitted without damage, and the liquid can not permeate into the waveguide and the horn.
Preferably, to reduce microwave losses, the connecting piece is made of a material that is permeable to microwaves and non-absorbing to microwaves.
In particular, the connecting piece may be made of glass, plastic or porcelain.
Preferably, the radiation window is detachably and fixedly connected with the loudspeaker in order to adjust the radiation window according to actual conditions.
The microwave intensity of radiation is different, and the radiation window that uses is also different, in order to change the radiation window according to microwave intensity, can dismantle between radiation window and the waveguide loudspeaker and be connected.
Meanwhile, the radiation window is fixedly connected with the waveguide horn for the convenience of the use process.
As shown in fig. 3, the embodiment of the present invention further provides a microwave radiation system, which includes a plurality of microwave radiators as described above.
In conclusion, the embodiment of the present invention further provides a microwave radiation system, which includes a plurality of microwave radiators. Wherein, microwave radiator includes: high voltage power supply, magnetron, waveguide loudspeaker and radiation window, high voltage power supply, magnetron, waveguide and waveguide loudspeaker connect gradually, and the microwave can transmit in proper order, and under waveguide loudspeaker's effect, the microwave radiation area increase to can radiate and can be even some, in addition, the radiation window sets up the one end of keeping away from the waveguide at waveguide loudspeaker, and the radiation window can make microwave radiation more even.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A microwave radiator, comprising: the high-voltage power supply, magnetron, waveguide loudspeaker and radiation window, the high-voltage power supply the magnetron the waveguide with the waveguide loudspeaker connects gradually, the radiation window sets up the waveguide loudspeaker is kept away from the one end of waveguide.
2. A microwave applicator as claimed in claim 1, characterised in that the radiation window comprises a metal mesh, a safety medium layer and a filter layer, the metal mesh, the safety medium layer and the filter layer being arranged in a spiral in order centred on the centre of the radiation window and in order away from the centre of the radiation window.
3. A microwave applicator as claimed in claim 2, characterised in that the thickness of the metal mesh decreases in sequence from the centre of the radiation window to the edge of the radiation window, and the thickness of the safety medium layer and the filter layer increases in sequence.
4. A microwave radiator as claimed in claim 1, characterised in that the waveguide is provided with a recess at the junction with the horn, and in that the horn is provided with a projection at the junction with the waveguide, the recess and the projection cooperating with one another.
5. A microwave applicator as claimed in claim 4, characterized in that a sealing bead is arranged between the recess and the projection.
6. A microwave applicator as claimed in claim 1, characterised in that a connecting piece is provided between the waveguide and the horn.
7. A microwave applicator as claimed in claim 6, characterized in that the connection piece is made of a material which is permeable to microwaves and non-absorbing to microwaves.
8. A microwave applicator as claimed in claim 1, characterized in that the radiation window is detachably fixedly connected to the horn.
9. A microwave radiation system comprising a plurality of microwave radiators according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921814014.1U CN211813554U (en) | 2019-10-28 | 2019-10-28 | Microwave radiator and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921814014.1U CN211813554U (en) | 2019-10-28 | 2019-10-28 | Microwave radiator and system |
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| CN211813554U true CN211813554U (en) | 2020-10-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691297A (en) * | 2020-11-19 | 2021-04-23 | 成都恒波医疗器械有限公司 | Saddle-shaped microwave irradiator |
| CN112723462A (en) * | 2019-10-28 | 2021-04-30 | 陕西青朗万城环保科技有限公司 | Microwave radiator and system |
-
2019
- 2019-10-28 CN CN201921814014.1U patent/CN211813554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112723462A (en) * | 2019-10-28 | 2021-04-30 | 陕西青朗万城环保科技有限公司 | Microwave radiator and system |
| CN112691297A (en) * | 2020-11-19 | 2021-04-23 | 成都恒波医疗器械有限公司 | Saddle-shaped microwave irradiator |
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