CN209451357U - A kind of implanted Microwave Extraction device - Google Patents

Abstract

A kind of implanted Microwave Extraction device, the implanted Microwave Extraction device are made of extractor and microwave radiometer；It is characterized in that, the extractor is made of pond in pond outside solvent and sample, cooling sandwith layer is equipped between the outer inside and outside wall in pond of the solvent, lower end is equipped with filtering sieve plate, bottom is equipped with direct-through valve, is equipped with microwave reflection interlayer in the sample between the inside and outside wall in pond, and bottom is equipped with a porous shelf；The microwave radiometer is clava, and described clava one end is equipped with microwave radiation head, and the other end is equipped with coaxial interface；From the sample packet being equipped in extractor implantation sample cell, coaxial interface end is coupled by coaxial connection with microwave source the microwave radiation head.The utility model utilizes the double-cell extractor with pond in the outer pond of solvent and sample, is coaxially exported using solid state microwave sources to the microwave radiometer in implantation sample cell, preferably resolves the problems such as existing Microwave Extraction device is easy to overheat, microwave utilization rate is low.

Description

A kind of implanted Microwave Extraction device

Technical field

The utility model relates to a kind of microwave extraction technologies, specifically design a kind of implanted Microwave Extraction device, belong to Technical field of analytical instruments.

Technical background

Microwave technology is widely used to chemical synthesis, analysisization as a kind of novel energy-saving and environment-friendly heating method The fields such as, Medical Biology, food processing, material preparation, communication.Microwave technology mainly applies in analytical chemistry field The pretreatment of the samples such as micro-wave digestion, Microwave Extraction, microwave drying.Microwave technology can be significantly improved due to its unique effect The rate of reaction process, in extracting method, Microwave Extraction can quick crashing cell wall, extraction efficiency is high, particularly with solid Sample facilitates extraction of substance and desorbs from sample matrices, hence it is evident that improves extraction rate.Microwave loss mechanisms with efficiently quickly, Energy conservation and environmental protection, batch processing and can be realized automation etc. many advantages, be organic analysis especially environmental analysis sample it is pre- Processing opens a new approach.

Microwave technology has a good application prospect in the analysis such as GC or GC-MS sample pre-treatments field, but existing at present Microwave Extraction device mostly reequiped by household microwave oven, household microwave oven usually using magnetron as microwave source, by waveguide and Multimode cavity imports microwave energy, and microwave magnetron source needs high pressure in addition, needs the instrument space compared with large cavity.Therefore existing There are the following problems for some Microwave Extraction devices: first, generalling use the microwave source of relatively high power to guarantee the enough power of cavity Density is easy to cause sample heating in extractor to overheat fastly very much, and temperature distribution is non-uniform, is difficult to control temperature, affect As a result reliability is also unfavorable for the analysis of heat-sensitive materials；Second, bulky, structure is complicated, and extraction element is placed in microwave cavity In vivo, it is difficult to the operation such as be loaded, be sampled, cooled down, separated, also be inconvenient to observe extraction situation；Third, extraction element is placed in In microwave cavity, high-power microwave source acts on entire extraction element by waveguide, while heating extraction object, holds extraction The device of liquid is also heated simultaneously, and extracting solution, the device for holding extracting solution can absorb microwave strongly, is unfavorable for the efficient of microwave It utilizes.Since there are disadvantages mentioned above, application of the microwave technology in the analysis sample pre-treatments such as GC or GC-MS is constrained.

The utility model utilizes the double-cell extractor with pool structure in the outer pond of solvent and sample, coaxially to export small-power Solid state microwave sources and microwave radiometer energy regenerative replace conventional multi-mode resonance cavity system, solid state microwave sources are coaxially exported to implantation sample Microwave radiometer in product pond, from sample interior feed-in microwave energy, provide it is a kind of it is quickly time saving, easy to operate, can solve to mention Equipment overheat is taken, microwave utilization rate is effectively improved, realizes the integrated implanted Microwave Extraction device of separation and Extraction.

Utility model content

For main problem existing for prior art, the utility model utilizes double ponds with pond in the outer pond of solvent and sample Solid state microwave sources are coaxially exported the microwave radiometer in extremely implantation sample cell, are equipped between the outer inside and outside wall in pond of solvent cold by extractor But interlayer is equipped with microwave reflection interlayer in sample between the inside and outside wall in pond, the purpose of this utility model is: one is to provide a kind of implantation Type micro-wave extraction element replaces conventional multi-mode resonance with coaxial output small-power solid state microwave sources and microwave radiometer energy regenerative system Microwave radiometer is implanted into sample interior by chamber system, from sample interior feed-in microwave energy, effectively improves microwave utilization rate.Two want A kind of compact, easy to operate is provided, realizes and extracts isolation integral, the Microwave Extraction device with condensation effect.

A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: implanted Microwave Extraction device, it is described Implanted Microwave Extraction device is made of extractor and microwave spoke device.It is characterized in that the extractor is by pond outside solvent and sample Interior pond composition is equipped with cooling sandwith layer between the outer inside and outside wall in pond of the solvent, and lower end is equipped with filtering sieve plate, and bottom is equipped with direct-through valve, Microwave reflection interlayer is equipped in the solvent between the inside and outside wall in pond, bottom is equipped with a porous shelf；The microwave radiometer is rodlike Body, described clava one end are equipped with microwave radiation head, and the other end is equipped with coaxial interface；The rodlike microwave spoke device radiate head end from In the sample packet being equipped in extractor implantation sample cell, coaxial interface end is coupled by coaxial connection with low power microwave source.

The outer pond of the solvent is selected from high-boron-silicon glass, quartz glass or polytetrafluoroethylene (PTFE) material as a preferred technical solution, One kind of material, internal diameter is 1-2 times of pond diameter in sample, highly 1-2 times for pond height in sample, to guarantee pond in sample It can be placed in the outer pond of solvent.

Pond is equipped in the sample as a preferred technical solution, microwave reflection sandwich material is selected from can microwave reflection One kind of flake aluminum or scale copper, the inside and outside wall are polytetrafluoroethylene material, and pond internal diameter is microwave radiometer in the sample 1-4 times of diameter, to ensure that microwave radiometer and sample packet can be placed on pond in sample.

The microwave radiometer is attached to the small function of a power adjustable by coaxial output line as a preferred technical solution, Rate microwave source, by coaxial output line by microwave transmission to microwave radiometer, microwave radiometer implantation sample packet is placed in microwave source The center of sample cell, it is microwave energy is accurate, comprehensive adequately to act on sample.

The microwave source is selected from the semiconductor solid-state microwave generator coaxially exported, power as a preferred technical solution, 0-100 w is adjustable, 2450 MHz of microwave frequency, and microwave source is coupled by external coaxial connection with microwave radiometer.

Sample packet PPS(polyphenylene sulfide fibre as a preferred technical solution) it is made, there is high temperature resistant, resistance to The features such as soda acid, microwave radiometer are placed in sample packet, come into full contact with the radiating surface of microwave radiometer with sample, improve microwave Service efficiency.

The porous shelf is equipped with evenly arranged circular hole, and the porous shelf as a preferred technical solution, It is made of stainless steel material.

The cooling sandwith layer as a preferred technical solution, it is characterised in that: cooling sandwith layer lower end is equipped with refrigerant inlet, Upper end is equipped with refrigerant exit, and selected refrigerant is one of water, sodium chloride, ethylene glycol.

The direct-through valve as a preferred technical solution, it is characterised in that: the direct-through valve and filter screen Plate constitutes separator, is used for extraction fluid.

The filtering sieve plate as a preferred technical solution, it is characterised in that: sieve pore, sieve pore are uniform-distribution on sieve plate 8 mm of internal diameter, the porous shelf are made of nylon material.

Compared with prior art, the beneficial effect that the utility model obtains is:

(1) conventional multi-mode resonant cavity system is replaced using coaxial output small-power solid state microwave sources and microwave radiometer energy regenerative Microwave radiometer is implanted into and extracts sample interior by system, from sample interior feed-in microwave energy, avoids to entire extraction element and big The unnecessary heating of Extraction solvent is measured, energy regenerative is high-efficient；Meanwhile microwave energy is assembled in pond in the sample equipped with microwave reflection interlayer In sample in pond, microwave radiometer only carries out zonule radiation in sample in pond, it is only necessary to which the microwave of 100 w can guarantee sample Microwave Power Density in pond in product, further improves microwave utilization rate.

(2) double ponds design makes to flow through the solvent in sample in pond by microwave heating, into solvent outside solvent in pond it is cold But, the solvent in the outer pond of the extracting solution and solvent being heated in pond in sample constantly carries out thermal convection by porous barrier and heat passes It leads, entire extraction process is in dynamic circulation process, can be improved solvent extraction rate, accelerates extraction rate, effectively reduces solvent Dosage.

(3) solvent outside pond in sample and solvent between pond convection current and the cooling sandwith layer that is equipped with of the outer pond of solvent can The temperature for reducing extracting solution in sample cell, can guarantee that entire extraction process carries out at a lower temperature, can effectively avoid biography The problem of system microwave device sample is easy to overheat, and thermal activity ingredient is destroyed.

(4) extractor lower end is equipped with filtering sieve plate, and bottom is equipped with direct-through valve, can quickly and effectively realize extraction point It is simple to operate from integration.

(5) microwave radiometer is placed in sample, and structure is simple, compact, is easy to amplify, and is not necessarily to bulky equipment, easily It is generated in operation, the existing device of whole system volume ratio is obviously reduced.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used does simple introduction.

Fig. 1 is the perspective view of structure of the invention；

Fig. 2 is the cross-sectional view of structure of the invention；

Fig. 3 is the perspective view in pond in sample；

Fig. 4 is the cross-sectional view in pond in sample；

Fig. 5 is the top view in pond in sample.

Wherein 1- extractor, the outer pond of 11- solvent, pond in 12- sample, 13- solvent cell outer wall, 14- cooling sandwith layer, 15- are molten Agent pond inner wall, 16- filter sieve plate, 17- direct-through valve, 18- refrigerant inlet, 19- refrigerant exit, 120- sample cell outer wall, 121- Microwave reflection interlayer, 122- sample cell inner wall, 123- porous barrier, 124- sample packet；

2- microwave radiometer, 21- microwave radiation head, 22- coaxial interface, 23- coaxial connection, 24- microwave source；

3- sample.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1, a kind of implanted Microwave Extraction device, including extractor 1 and microwave radiometer 2；It is characterized in that, The extractor 1 is equipped with the outer pond 11 of solvent, pond 12 in sample, the outer pond of the solvent include solvent cell outer wall 13, cooling sandwith layer 14, Solvent cell inner wall 15 filters sieve plate 16, direct-through valve 17, refrigerant inlet 18, refrigerant exit 19, and pond is equipped with sample in the sample Pond outer wall 120, microwave reflection interlayer 121, sample cell inner wall 122, porous barrier 123, sample packet 124；The microwave radiometer 2 Including microwave radiation head 21, coaxial interface 22, coaxial connection 23, microwave source 24；Pond 12 is placed in the outer pond 11 of solvent in the sample Filtering sieve plate 16 on, microwave radiometer radiates head end 21 and is implanted into the sample packet 124 being equipped in pond 12 in sample from extractor 1 In, coaxial interface end 22 is coupled by coaxial connection 23 with low power microwave source 24.

As shown in Figure 1, the material in the outer pond 11 of the solvent is selected from high-boron-silicon glass, quartz glass or polytetrafluoroethylene material One kind, internal diameter is 1-2 times of pond diameter in sample, highly 1-2 times for pond height in sample, to guarantee pond energy in sample It is placed in the outer pond of solvent.

As shown in figure 3,121 material of microwave reflection interlayer that pond 12 is equipped in the sample be selected from can microwave reflection thin aluminium One kind of piece or scale copper, the inner wall 122, outer wall 120 are polytetrafluoroethylene material, and 12 internal diameter of pond is microwave in the sample 1-4 times of 2 diameter of radiator, to ensure that microwave radiometer 2 and sample packet 124 can be placed on pond 12 in sample.

As shown in Figure 1, the microwave radiometer 2 is attached to the low power microwave source of a power adjustable by coaxial connection 23 24, by coaxial connection 23 by microwave transmission to microwave radiometer 2, microwave radiometer 2 is implanted into sample packet 124 and is placed in microwave source 24 The center in pond in sample, it is microwave energy is accurate, comprehensive adequately to act on sample 3.

As shown in figure 3, the microwave source 24 is selected from the semiconductor solid-state microwave generator coaxially exported, power 0-100 w Adjustable, 2450 MHz of microwave frequency, microwave source is coupled by external coaxial connection with microwave radiometer.

As shown in Figure 1, the sample packet 124 PPS(polyphenylene sulfide fibre) it is made, there is high temperature resistant, acid and alkali-resistance etc. Feature, microwave radiometer are placed in sample packet, come into full contact with the radiating surface of microwave radiometer 2 with sample 3, are improved microwave and are used Efficiency.

As shown in figure 3, the porous shelf 123 is equipped with evenly arranged circular hole, and the porous shelf is by stainless Steel material is made.

As shown in Figure 1,14 lower end of cooling sandwith layer is equipped with refrigerant inlet 18, upper end is equipped with refrigerant exit 19, selected cold Matchmaker is one of water, sodium chloride, ethylene glycol.

As shown in Figure 1, the direct-through valve 17 constitutes separator with filtering sieve plate 16, it to be used for extraction fluid.

As shown in Figure 1, be uniform-distribution with sieve pore on the filtering sieve plate 16,8 mm of sieve pore internal diameter, the porous shelf by Nylon material is made.

Claims (9)

1. a kind of implanted Microwave Extraction device, the implanted Microwave Extraction device is made of extractor and microwave radiometer； It is characterized in that, the extractor is made of pond in pond outside solvent and sample, cooling folder is equipped between the outer inside and outside wall in pond of the solvent Layer, lower end are equipped with filtering sieve plate, and bottom is equipped with direct-through valve, is equipped with microwave reflection interlayer, bottom in the sample between the inside and outside wall in pond Portion is equipped with a porous shelf；The microwave radiometer is clava, and described clava one end is equipped with microwave radiation head, and the other end is set There is coaxial interface；From the sample packet being equipped in extractor implantation sample cell, coaxial interface end passes through the microwave radiation head Coaxial connection couples with microwave source.

2. implanted Microwave Extraction device according to claim 1, it is characterised in that: the outer pond of the solvent is selected from high borosilicate One kind of glass, quartz glass or polytetrafluoroethylene material, internal diameter is 1-2 times of pond diameter in sample, highly in sample 1-2 times of pond height, to guarantee that pond can be placed on outside solvent in pond in sample.

3. implanted Microwave Extraction device according to claim 1, it is characterised in that: the microwave that pond is equipped in the sample Reflect sandwich material be selected from can the aluminium flake of microwave reflection or one kind of copper sheet, the inside and outside wall be polytetrafluoroethylene material, it is described Pond internal diameter is 1-4 times of microwave radiometer diameter in sample, to ensure that microwave radiometer and sample packet can be placed on pond in sample.

4. implanted Microwave Extraction device according to claim 1, it is characterised in that: the microwave radiometer passes through coaxial Output line is attached to the microwave source of a power adjustable, microwave source by coaxial output line by microwave transmission to microwave radiometer, it is micro- Wave emitter implantation sample packet is placed in the center of sample cell.

5. implanted Microwave Extraction device according to claim 1, it is characterised in that: the microwave source is selected from coaxial output Semiconductor solid-state microwave generator, power 0-100 w is adjustable, 2450 MHz of microwave frequency, and microwave source passes through external coaxial Wiring couples with microwave radiometer.

6. implanted Microwave Extraction device according to claim 1, it is characterised in that: the sample packet is with PPS polyphenyl Sulfide fibers are made.

7. implanted Microwave Extraction device according to claim 1, it is characterised in that: the cooling sandwith layer lower end is equipped with cold Matchmaker's entrance, upper end are equipped with refrigerant exit, and selected refrigerant is one of water, sodium chloride, ethylene glycol.

8. implanted Microwave Extraction device according to claim 1, it is characterised in that: the direct-through valve and filtering sieve plate Separator is constituted, extraction fluid is used for.

9. implanted Microwave Extraction device according to claim 1, it is characterised in that: sieve pore is uniform-distribution on sieve plate, 8 mm of sieve pore internal diameter, the porous shelf are made of nylon material.