TWM669538U - Continuous microwave soil desorption system - Google Patents

Abstract

The present invention discloses a continuous microwave heating system with stable feeding, including: a feeding module for pulverizing and sieving a pre-processed material into a pulverized homogeneous material; a heating cavity with microwave power in the heating cavity The source has a feeding opening and a discharging opening on opposite sides respectively; a first microwave suppression cavity is docked with the feeding opening of the heating cavity, and the microwave suppression cavities include a plurality of suppression structures; A second microwave suppression cavity is connected to the discharge opening of the heating cavity, and the microwave suppression cavity includes a plurality of suppression structures; a conveyor belt is used for conveying from the feeding module and needs to be heated by microwaves The crushed homogeneous material enters the first microwave suppression cavity, then enters the heating cavity, and finally enters the second microwave suppression cavity and then outputs; a feeding device is arranged in the first microwave suppression cavity or the heating cavity. Above the inside of the second microwave suppression cavity, the feeding device contains a microwave absorbing material; and an exhaust module is connected to the heating cavity, and is used for discharging the gas generated after heating the crushed homogeneous material out of the heating cavity. With the c continuous microwave heating system with stable feeding, all kinds of pulverized and homogeneous materials can be heated quickly and uniformly, and the temperature can be lowered quickly and taken out smoothly.

Description

Continuous microwave soil desorption system

This invention is about a continuous microwave heating system, and more particularly about a continuous microwave soil desorption system.

Traditional heating methods, such as flame, hot air, electric heating, steam, etc., all use the principle of heat conduction to transfer heat from the outside of the heated object to the inside, gradually increasing the temperature of the center of the object. It takes a certain amount of time for the center of the object to reach the required temperature, and objects with poor thermal conductivity require even longer time.

Microwaves are electromagnetic waves with a frequency of 300MHz to 300GHz, usually used in radar and communication technology for information transmission. In recent years, they have also been applied to various industries and agriculture to heat, dry or crack substances. Commonly used microwave power frequencies are 915MHz and 2450MHz, which can cause polar material molecules to rub against each other to generate heat and generate heat. During use, it can be selected according to the shape, size, and water content of the heated material. Microwave heating makes the heated object itself a heating body, and does not require a heat conduction process. It heats the inside and outside at the same time, so the heating effect can be achieved in a short time. And when microwave heating, all parts of the object can usually penetrate the electromagnetic waves evenly to generate heat, so the uniformity is greatly improved. In microwave heating, microwave energy can only be absorbed by the heated object to generate heat, and the air in the heating room and the corresponding container will not heat up, so the thermal efficiency is extremely high and the production environment is significantly improved.

In the past microwave heating equipment, not all materials can effectively absorb microwaves. On the other hand, in practice, a large number of materials have different initial size states, such as bundles, agglomerates, granules, powders, etc. Therefore, the materials may be stuck or unevenly arranged when they are conveyed into the cavity by the conveyor belt, resulting in uneven heating of the materials or uneven feeding and discharging of the materials.

In view of the above problems, it is necessary to propose a continuous microwave soil desorption system to solve the above problems.

The main purpose of this invention is to propose a continuous microwave soil desorption system, especially when a large amount of materials have different initial size states in practice. The materials enter a stable feeding module for processing and become a crushed homogeneous material. The conveyor belt can smoothly deliver the processed crushed homogeneous material into the microwave cavity, so that the crushed homogeneous material is evenly heated and discharged smoothly.

In order to achieve the above main purpose, the present invention proposes a continuous microwave soil desorption system, including: a feeding module, used to crush and screen a pre-processed material into a crushed homogeneous material; a heating cavity, the heating cavity has a microwave power source, and has a feeding opening and a discharging opening on two opposite sides; a first microwave suppression cavity, connected to the feeding opening of the heating cavity, and the microwave suppression cavities contain a plurality of suppression structures; a second microwave suppression cavity, connected to the discharging opening of the heating cavity, and the microwave suppression cavities It includes a plurality of suppression structures; a conveyor belt for conveying the crushed homogenized material from the feeding module and to be heated by microwaves, into the first microwave suppression cavity, then into the heating cavity, and finally into the second microwave suppression cavity for output; a feeding device, arranged above the first microwave suppression cavity or the second microwave suppression cavity, the feeding device contains a microwave absorbing material; and an exhaust module, connected to the heating cavity, for exhausting the gas generated after the material is heated out of the heating cavity.

According to one feature of this invention, the feeding module includes a crushing mechanism for crushing the material into particles less than 3 cm; and a screening mechanism for passing the crushed material through the screening mechanism to obtain the crushed homogeneous material.

According to one feature of the invention, the feeding device is arranged above the interior of the first microwave suppression cavity and has a spraying element that can spray the microwave absorbing material onto the material heated by microwaves on the conveyor belt.

According to one feature of the invention, the feeding device is disposed above the interior of the first microwave suppression cavity and is a fluid pipeline with a plurality of openings, which sprays the microwave absorbing material onto the material heated by microwaves on the conveyor belt.

According to one feature of the invention, the feeding device is arranged above the interior of the second microwave suppression cavity and has a spraying element that can spray the microwave absorbing material onto the material heated by microwaves on the conveyor belt.

According to one feature of the invention, the feeding device is disposed above the interior of the second microwave suppression cavity and is a fluid pipeline with a plurality of openings, which sprays the microwave absorbing material onto the material heated by microwaves on the conveyor belt.

According to one of the characteristics of this creation, the restraining structures are in the form of a plurality of metal sheets.

According to one of the characteristics of this invention, these suppression structures are soft materials that absorb microwaves.

According to one of the characteristics of this creation, these suppression structures are made of soft materials that can absorb microwaves on the entire surface, and are cut into multiple sections from bottom to top to form multiple sheet structures.

According to one feature of the invention, soft conductive materials are provided on both sides of the microwave suppression cavities, and the soft conductive materials are suspended on the microwave suppression cavities and hang down.

In summary, the continuous microwave soil desorption system of this invention has the following effects: 1. The system is easy to process, manufacture and integrate; 2. The system manufacturing cost is reduced; 3. The material temperature rises and falls quickly; 4. The microwave energy safety value is achieved; 5. The material can smoothly enter and exit the microwave cavity; and 6. The material can be heated evenly.

100: Continuous microwave soil desorption system

110: Heating chamber

112a: Feeding opening

112b: Discharge opening

120: Microwave power source

122: Microwave energy

130: Microwave suppression cavity

130a: first microwave suppression cavity

130b: Second microwave suppression cavity

132: Inhibition structure

134a: Soft conductive material

134b: Soft conductive material

135: First feeding device

136: Second feeding device

137: Spray direction

138:Spraying direction

140: Exhaust module

150:Conveyor belt

155: Roller

180: Materials before processing

181: Crushing homogeneous materials

190: Feeding module

190a: Crushing mechanism

190b: Screening mechanism

H: Height

In order to make the above and other purposes, features, and advantages of this invention more clearly understood, several preferred embodiments are given below, and detailed descriptions are given in conjunction with the attached drawings.

Figure 1 is a schematic diagram of the structural side of an embodiment of a continuous microwave soil desorption system.

Figure 2 is a schematic diagram of the structural side of the first microwave suppression cavity embodiment of the continuous microwave soil desorption system of this invention.

Figure 3 is a schematic diagram of the structural side of the second microwave suppression cavity embodiment of the continuous microwave soil desorption system of this invention.

Although the present invention may be embodied in various forms, the preferred embodiments of the present invention are those shown in the accompanying drawings and described herein. Those skilled in the art will appreciate that the apparatus and methods specifically described herein and illustrated in the accompanying drawings are considered to be exemplary, non-limiting exemplary embodiments of the present invention, and that the scope of the present invention is defined solely by the scope of the patent application. Features illustrated or described in conjunction with an exemplary embodiment may be combined with features of other embodiments. Such modifications and variations are intended to be included within the scope of the present invention.

Microwaves have different effects on materials of different properties and are beneficial to drying operations. Because water molecules absorb microwaves best, parts with high water content absorb more microwave power than parts with low water content. This is the characteristic of choosing heating. When drying products such as wood and paper, this characteristic can be used to achieve uniform heating and uniform drying. It is worth noting that for some materials, the higher the temperature, the better the absorption, resulting in a vicious cycle, and the local temperature rises sharply, causing overdrying or even carbonization. When using microwave heating on such materials, it is necessary to pay attention to formulating a reasonable heating process.

Please refer to Figure 1, which is a schematic diagram of the structure side of an embodiment of a continuous microwave soil desorption system 100. The continuous microwave soil desorption system 100 includes: a feeding module 190, a heating cavity 110, a first microwave suppression cavity 130a, a second microwave suppression cavity 130b, a conveyor belt 150 and an exhaust module 140. The black arrows in the figure are the travel directions of a material 180 before treatment and a crushed homogenized material 181 after treatment.

The feeding module 190 is used to crush and screen a material into a crushed homogeneous material 181. More specifically, the pre-processed material 180 is pushed into the feeding module 190 by any power, and first passes through a crushing mechanism 190a to be crushed into particles less than 3 cm, and then enters a screening mechanism 190b to be processed into the crushed homogeneous material 181. The crushed homogeneous material 181 can be evenly heated and smoothly enter and exit the microwave cavity, solving the problem that a large number of pre-processed materials 180 are different in initial size and are fed into the cavity by the conveyor belt 150 through the roller 155, which may cause material jamming or uneven arrangement, resulting in uneven heating of the pre-processed material 180 or unsmooth discharge.

Please refer to Figure 2, which is a schematic diagram of the structure side of the first microwave suppression cavity embodiment of the continuous microwave soil desorption system of the present invention, and Figure 3, which is a schematic diagram of the structure side of the second microwave suppression cavity embodiment of the continuous microwave soil desorption system of the present invention. It more clearly illustrates the implementation of the first microwave suppression cavity 130a and the second microwave suppression cavity 130b. The black arrows in the figure are the travel directions of the material 180 before treatment and the crushed homogenized material 181 after treatment.

The heating cavity 110 has a plurality of microwave power sources 120, each having an inlet opening 112a and an outlet opening 112b on opposite sides, wherein the height H of the inlet opening 112a and the outlet opening 112b is between 3 cm and 50 cm. The microwave power sources 120 provide microwave energy 122 to the heating cavity 110, and the microwave frequency of the microwave power sources 120 is selected from one of 950 MHz, 2450 MHz or 5800 MHz. Since the heating cavity 110 has the material inlet opening 112a and the material outlet opening 112b, the heating cavity 110 needs to connect the first microwave suppression cavity 130a and the second microwave suppression cavity 130b to prevent the microwave energy 122 from leaking out from the material inlet opening 112a and the material outlet opening 112b of the heating cavity 110.

The first microwave suppression cavity 130a is connected to the feed opening 112a of the heating cavity 110, and the first microwave suppression cavity 130a includes a plurality of suppression structures; the second microwave suppression cavity 130b is connected to the discharge opening 112b of the heating cavity 110, and the second microwave suppression cavity 130b includes a plurality of suppression structures 132. The height H of the feed opening 112a and the discharge opening 112b is between 3 cm and 50 cm. Preferably, the height of the opening is between 5 cm and 20 cm.

The conveyor belt 150 is used to convey the crushed homogeneous material 181 that needs to be heated by microwaves, enter the first microwave suppression cavity 130a, then enter the heating cavity 110, and finally enter the second microwave suppression cavity 130b for output. The conveyor belt 150 carries the crushed homogeneous material 181 that is heated by microwaves. The conveyor belt 150 can be continuous conveying or step-by-step conveying. Continuous conveying means that it conveys forward at a fixed conveying speed; step-by-step conveying means that each conveying will move forward a certain distance and stay for a certain period of time. The black arrow in Figure 1 is the direction of travel of the material 180 before treatment. Since the heated material 180 before treatment is any material, such as sludge, soil, ceramics, food, fruits and vegetables, and other block materials or powder materials.

The exhaust module 140 is connected to the heating chamber 110 and is used to exhaust the gas generated after the crushed homogenized material 181 is heated out of the heating chamber 110.

In FIG. 2 and FIG. 3, the first microwave suppression cavity 130a and the second microwave suppression cavity 130b include a plurality of suppression structures 132. The suppression structures 132 are arranged on the microwave suppression cavities 130 from top to bottom. The suppression structures 132 can also be arranged up, down, left, and right inside the microwave suppression cavities 130. It should be noted that the length of the suppression structures 132 is less than the height of the microwave suppression cavities 130. Moreover, the suppression structures 132 do not contact the conveyor belt 150.

In one embodiment, the suppression structures 132 are in the form of metal sheets, preferably multiple metal sheets. In another embodiment, the suppression structures 132 are soft materials that can absorb microwaves, such as soft materials containing carbon. In one embodiment, the suppression structures 132 are soft materials that can absorb microwaves on the entire surface, and are cut and separated from bottom to top in multiple sections. That is, the suppression structures 132 are a whole piece of suppression structure, which is cut into multiple pieces and hung from top to bottom above the first microwave suppression cavity 130a and the second microwave suppression cavity 130b to hang down. When the heated crushed homogeneous material 181 is heated while traveling on the conveyor belt 150, the suppression structures 132 can be pushed away.

The two ends of the outermost sides of the first microwave suppression cavity 130a and the second microwave suppression cavity 130b are provided with soft conductive materials 134a, which are suspended from the first microwave suppression cavity 130a and the second microwave suppression cavity 130b and hang down. In addition, the joints of the first microwave suppression cavity 130a and the second microwave suppression cavity 130b and the heating cavity 110 are provided with soft conductive materials 134b, which are suspended from the microwave suppression cavities 130 and hang down. The two ends of the outermost sides of the first microwave suppression cavity 130a and the second microwave suppression cavity 130b are further provided with openable and closable metal gates (not shown in the figure). In one embodiment, the crushed homogenized material 181 heated by microwaves on the conveyor belt 150 is heated to above 120 degrees in the heating chamber 110.

In FIG. 2, a first feeding device 135 is disposed above the interior of the first microwave suppression cavity 130a, and the first feeding device 135 contains a microwave absorbing material. The first feeding device 135 sprays the microwave absorbing material onto the pulverized homogeneous material 181 heated by microwaves on the conveyor belt 150, and the spraying direction 137 is shown by the hollow arrow in FIG. 2, that is, the spraying direction 137 is generally downward. The weight of the microwave absorbing material sprayed onto the conveyor belt 150 is less than one fifth of the weight of the pulverized homogeneous material 181 on the conveyor belt 150.

In FIG. 3, a second feeding device 136 is disposed above the interior of the second microwave suppression cavity 130b, and the second feeding device 136 contains a microwave absorbing material. The second feeding device 136 sprays the microwave absorbing material onto the pre-processed material 180 heated by microwaves on the conveyor belt 150, and the spraying direction 138 is shown by the hollow arrow in FIG. 3, that is, the spraying direction 138 is generally downward. The weight of the microwave absorbing material sprayed onto the conveyor belt 150 is less than one fifth of the weight of the crushed homogenized material 181 on the conveyor belt 150.

In one embodiment, the microwave absorbing material contained in the first feeding device 135 is water, and the microwave absorbing material is sprayed and added to the pulverized homogeneous material 181 heated by microwaves on the conveyor belt 150; In one embodiment, the microwave absorbing material contained in the first feeding device 135 is selected from one of carbon black, silicon carbide, and activated carbon, and the microwave absorbing material is sprayed and added to the pulverized homogeneous material 181 heated by microwaves on the conveyor belt 150; In one embodiment, the microwave absorbing material contained in the first feeding device 135 is an oxide material, and the microwave absorbing material is sprayed and added to the crushed homogeneous material 181 heated by microwaves on the conveyor belt 150; In one embodiment, the microwave absorbing material contained in the first feeding device 135 is one of metal bars or metal particles, and the microwave absorbing material is sprayed and added to the crushed homogeneous material 181 heated by microwaves on the conveyor belt 150.

In one embodiment, the microwave absorbing material contained in the second feeding device 136 is water, and the microwave absorbing material is sprayed and added to the pulverized homogeneous material 181 heated by microwaves on the conveyor belt 150. After the pulverized homogeneous material 181 heated by microwaves on the conveyor belt 150 is sprayed with water above the second feeding device 136 inside the second microwave suppression cavity 130b, its temperature is reduced to below 60 degrees. In one embodiment, the second feeding device 136 is a plastic hose or the second feeding device 136 is a glass tube. The microwave absorbing material in the second feeding device 136 is selected from one of water, refrigerant or ionized water. The first feeding device 135 surrounds the second microwave suppression cavity 130b and has a plurality of holes (not shown) for spraying microwave absorbing material onto the pulverized homogeneous material 181 heated by microwaves on the conveyor belt 150. The second feeding device 136 is preferably a water ring formed by water, which flows through a cooling device (not shown in the figure) and then enters the second feeding device 136 to achieve a cooling cycle. The weight of the microwave absorbing material sprayed onto the pulverized homogeneous material 181 on the conveyor belt 150 is less than one fifth of the weight of the pulverized homogeneous material 181 on the conveyor belt 150.

In summary, the continuous microwave soil desorption system of this invention, which can quickly cool down the outlet materials, has the following effects: 1. The system is easy to process and manufacture; 2. The system manufacturing cost is reduced; 3. The outlet materials are quickly cooled; 4. The microwave energy safety value is achieved; 5. The materials can smoothly enter and exit the microwave cavity; and 6. The materials can be evenly heated.

Although this creation has been disclosed by the above-mentioned preferred embodiments, it is not intended to limit this creation. Anyone familiar with this art can make various changes and modifications within the spirit and scope of this creation. As explained above, various types of modifications and changes can be made without destroying the spirit of this new type. Therefore, the scope of protection of this creation shall be determined by the scope of the patent application attached hereto.

100: Continuous microwave soil desorption system

110: Heating chamber

112a: Feeding opening

112b: Discharge opening

120: Microwave power source

122: Microwave energy

130a: first microwave suppression cavity

130b: Second microwave suppression cavity

132: Inhibition structure

135: First feeding device

136: Second feeding device

140: Exhaust module

150:Conveyor belt

155: Roller

180: Materials before processing

181: Crushing homogeneous materials

190: Feeding module

190a: Crushing mechanism

190b: Screening mechanism

Claims (10)

A continuous microwave soil desorption system, wherein each component is electrically connected to each other, comprises: a feeding module, used to crush and screen a pre-processed material into a crushed homogeneous material; a heating cavity, wherein the heating cavity has a microwave power source, and has a feeding opening and a discharging opening on opposite sides; a first microwave suppression cavity, connected to the feeding opening of the heating cavity, wherein the microwave suppression cavities contain a plurality of suppression structures; a second microwave suppression cavity, connected to the discharging opening of the heating cavity, wherein the microwave suppression cavities contain a plurality of suppression structures; It includes a plurality of suppression structures; a conveyor belt for conveying the crushed homogenized material from the feeding module and to be heated by microwaves, into the first microwave suppression cavity, then into the heating cavity, and finally into the second microwave suppression cavity for output; a feeding device, arranged above the first microwave suppression cavity or the second microwave suppression cavity, the feeding device contains a microwave absorbing material; and an exhaust module, connected to the heating cavity, for exhausting the gas generated after the material is heated out of the heating cavity. The continuous microwave soil desorption system as described in claim 1, wherein the feed module comprises a crushing mechanism for crushing the pre-processed material into particles less than 3 cm; and a screening mechanism for passing the crushed material through the screening mechanism to obtain the crushed homogeneous material. The continuous microwave soil desorption system as described in claim 1, wherein the feeding device is arranged above the interior of the first microwave suppression cavity and has a spraying element that can spray the microwave absorbing material to the pulverized homogeneous material heated by microwaves on the conveyor belt. The continuous microwave soil desorption system as described in claim 1, wherein the feeding device is arranged above the interior of the first microwave suppression cavity and is a fluid pipeline with a plurality of openings, and the microwave absorbing material is sprayed and added to the pulverized homogeneous material heated by microwaves on the conveyor belt. The continuous microwave soil desorption system as described in claim 1, wherein the feeding device is arranged above the interior of the second microwave suppression cavity and has a spraying element that can spray the microwave absorbing material to the crushed homogeneous material heated by microwaves on the conveyor belt. The continuous microwave soil desorption system as described in claim 1, wherein the feeding device is arranged above the interior of the second microwave suppression cavity and is a fluid pipeline with a plurality of openings, and the microwave absorbing material is sprayed and added to the pulverized homogeneous material heated by microwaves on the conveyor belt. The continuous microwave soil desorption system as described in claim 1, wherein the suppression structures are a plurality of metal sheets. The continuous microwave soil desorption system as described in claim 1, wherein the suppression structures are soft materials that absorb microwaves. The continuous microwave soil desorption system as described in claim 1, wherein the suppression structures are soft materials that can absorb microwaves on the entire surface, and are cut into multiple sections from bottom to top to form multiple sheet structures. The continuous microwave soil desorption system as described in claim 1, wherein soft conductive materials are arranged on both sides of the microwave suppression cavities, and the soft conductive materials are suspended on the microwave suppression cavities and hang down.