CN208653963U - Microwave Thermgravimetric Analysis Apparatus - Google Patents

Abstract

The utility model provides a kind of microwave Thermgravimetric Analysis Apparatus, including microwave cavity, microwave system, weighing system, temperature measuring system, gas partition system, control system and case frame, microwave resonance is intracavitary to be equipped with second space, and microwave cavity bottom plate is equipped with the through-hole being connected to second space, sample support bar is provided on weighing system, the top of sample support bar stretches in reaction chamber；It further include protective enclosure; it surrounds the first space, and the bottom end of cover main body and cover bottom plate are tightly connected, and cover main body top and microwave cavity bottom plate are tightly connected; weighing system is located in the first space and is fixed on cover bottom plate, and through-hole is located in the first space and is connected in the first space with second space.Weighing system is closed by protective enclosure, is completely cut off with external environment, and weighing results accuracy is improved；Protective enclosure can prevent gas exchanges and circulation in ambient atmos and second space, avoid the additional adverse effect of atmosphere in reaction chamber.

Description

Microwave Thermgravimetric Analysis Apparatus

Technical field

The utility model relates to a kind of microwave Thermgravimetric Analysis Apparatus, belong to analysis test apparatus technical field.

Background technique

Thermogravimetry is by thermobalance under programed temperature to obtain the quality of substance and a skill of temperature relation Art.Currently, conventional thermogravimetric analysis is typically put into minimal amount of sample and is heated by Electric heating, belong to external heating side Formula；Specimen temperature is represented using thermocouple measurement sample surrounding atmosphere temperature, studies sample quality under programed temperature With the relationship of temperature or quality and time.Of bulky block material or quality greatly is generally due to testing the sample used Grain material, the too small property that cannot really reflect bulk specimen of sample mass, and the survey of usually used conventional thermogravimetric analyzer Amount range rests on 0 ~ 100mg mostly, is not able to satisfy the needs of bulk specimen research, so that simulation bulk specimen is in high temperature and different gas The research that penetration quality dynamic changes under atmosphere seems difficult.Again due to the sample amount of being put into very little, the temperature of thermocouple measurement is sample week The non-specimen temperature of temperature of atmosphere is enclosed, whether resulting conclusion, which is suitable for actual conditions, is also worth discussion.

Microwave heating have heating rapidly, product uniformity is good, the reaction time is short, low energy consumption and " whole heating " etc. are numerous Advantage, special heating mechanism make heat and mass and conventional heating mode inside material have very big difference, and may The difference of reaction mechanism is caused, so thermal weight loss and reaction mechanism of the research bulk specimen under microwave heating are very significant.Together When, block material biggish for volume and the biggish granule materials of quality, the porous media of especially a large amount of aggregates, stomata, Its thermal coefficient very little heats up slower, and conventional heating mode is unable to meet demand, but these material absorbing properties are good, microwave Heating can be a kind of better choice.Therefore, occur microwave Thermgravimetric Analysis Apparatus, the master of microwave Thermgravimetric Analysis Apparatus at present Want structure member include microwave system, microwave cavity, positioned at the intracavitary reaction chamber of microwave resonance, weighing system, air supply system, Research on Automatic Measuring System of Temperature and control system and equipment appearance shell structure are constituted, wherein weighing system generallys use electronics day Flat, electronic balance upper end connects sample support bar, and the bottom plate of microwave cavity is equipped with through-hole, for the top of sample support bar It stretches in reaction chamber, sample crucible is arranged in sample support bar top, and sample crucible is located in reaction chamber, for holding sample. In the prior art, electronic balance is typically at naked state, and to guarantee its measurement accuracy, sample support bar and reaction chamber Between be it is discontiguous, then should be greater than the diameter of sample support bar on reaction chamber for the through-hole internal diameter that sample holder passes through.

The prior art has the following disadvantages and deficiency: 1, electronic balance non-close is arranged, and electronic balance is very sensitive, then External environment, for example air-flow blows or vibrates will affect its measurement accuracy；2, electronic balance non-close is arranged, and on reaction chamber The internal diameter of the through-hole passed through for sample support bar is larger, and in order to not influence the measurement accuracy of electronic balance, the through-hole and sample Sealing structure can not be set between support rod, then ambient atmos can be entered in reaction chamber by the through-hole, or reaction is indoor Gas can be overflowed through the through-hole, i.e., will do it gas exchanges and circulation between external environment inside reaction chamber, influence reaction chamber The interior amount and purity for generating gas, to will affect thermal gravimetric analysis results；Reaction chamber internal gas and external environment gas in order to prevent Exchange and circulation between body, some, which uses, in the prior art guarantees in reaction chamber for the mode of micro-positive pressure, by reaction chamber Gas outflow through-hole prevent ambient atmos from entering in reaction chamber, in this way will cause the loss that gas is generated in reaction chamber, thus So that result inaccuracy when generating gas measurement analysis.

Utility model content

The utility model provides a kind of microwave Thermgravimetric Analysis Apparatus, can solve prior art weighing system non-close and sets The problem of setting, influencing measurement accuracy and thermal gravimetric analysis results accuracy.

To achieve the purpose that solve above-mentioned technical problem, the utility model is achieved using following technical scheme:

A kind of microwave Thermgravimetric Analysis Apparatus provides the microwave system of microwave including microwave cavity, to microwave cavity, claims The case frame of weight system, temperature measuring system, gas partition system, control system and outside, the microwave resonance is intracavitary to be set There is the second space as reaction chamber, and the bottom plate of the microwave cavity is equipped with the through-hole being connected to the second space, Sample support bar is provided on the weighing tray of the weighing system, the top of the sample support bar passes through the through-hole and protrudes into In to the second space；The gas partition system includes the first space and the second space, the microwave thermogravimetric analysis Device further includes protective enclosure, and the protective enclosure surrounds first space, and the protective enclosure includes cover bottom plate and by four The cover main body that cycle side plate is constituted, the bottom end of the cover main body and the cover bottom plate are tightly connected, the top of the cover main body and institute The bottom plate for stating microwave cavity is tightly connected, and the weighing system is located in first space and is fixed on the cover bottom plate On, the through-hole is located in first space and is connected in first space with the second space.

Junction is equipped with seal shock-proof component between the bottom end of the cover main body and the cover bottom plate.

The microwave cavity is integrally connected on the roof of the case frame, and the protective enclosure suspension type connects On the bottom plate of the microwave cavity.

The first air inlet pipe is provided in the protective enclosure, for being passed through protection gas into first space, described Gas pressure in one space is greater than the gas pressure in the second space.

The second space is surrounded by the bottom plate of reaction chamber cover, lid and the microwave cavity, the reaction chamber cover Body is in the tubular of upper and lower opening, and the upper opening of the lid and the reaction chamber cover cooperates, under the reaction chamber cover The bottom plate palette at end and the microwave cavity；Micro porous filtration inner cylinder, the sample support are equipped in the second space The top of bar is located in the micro porous filtration inner cylinder, and is formed between the micro porous filtration inner cylinder and the reaction chamber cover Three spaces, the gas partition system further include the third space, and the third space is communicated with third air inlet pipe, for Reaction gas or protection gas are passed through in the third space.

The gas pressure in the third space is greater than the gas pressure in the surrounded inner space of micro porous filtration inner cylinder.

The top of the second space is connected with outlet passageway, generates gas for reaction to be discharged.

The microwave resonance is intracavitary to be additionally provided with the 4th space, and the gas partition system further includes the 4th space, institute The region between the chamber shell and the reaction chamber cover that the 4th space is the microwave cavity is stated, the 4th space is communicated with 4th air inlet pipe, for being passed through protection gas into the 4th space, the protection atmospheric pressure in the 4th space is greater than described the Gas pressure in two spaces.

The temperature measuring system includes infrared temperature probe, quartz ampoule and tool there are three the threeway bracket of access, described Threeway bracket is installed on the outside of the chamber shell of the microwave cavity, and the sound end of the infrared temperature probe is plugged in the threeway In first access of bracket, the outer end of the quartz ampoule is plugged in second access of the threeway bracket, the threeway The third access of bracket is connected with the 4th air inlet pipe；The inner end of the quartz ampoule is protruded into the second space, and described red The axis of the axis of outer temperature probe and the quartz ampoule is on the same line.

The microwave Thermgravimetric Analysis Apparatus further includes weighing leveling system, and the weighing leveling system is described including being connected to Multiple height adjustable casters on case frame bottom surface, in advance parallel the first bubble/air-bubble leveling ruler of correction levelness and Second bubble/air-bubble leveling ruler；First bubble/air-bubble leveling ruler is horizontally arranged on the cover bottom plate, second water Bubble/air-bubble leveling ruler lies in a horizontal plane in the title when it is parallel with first bubble/levelness of air-bubble leveling ruler in correction On the weighing tray of weight system；The case frame, which is equipped with, can be observed first bubble/air-bubble leveling ruler peep hole.

Compared with prior art, the utility model microwave Thermgravimetric Analysis Apparatus has the advantages that:

1, weighing system is closed by protective enclosure, is isolated with external environment, then avoids external air flow and blow sample support Bar leads to the problem of weighing results inaccuracy, while can also reduce the influence that external shock moves weighing system measurement accuracy；

2, weighing system is closed by protective enclosure, and the through-hole on microwave cavity bottom surface is also in enclosure space, from And protective enclosure can prevent ambient atmos from entering in reaction chamber space by the through-hole, then without guaranteeing gas in reaction chamber space Micro-positive pressure prevents ambient atmos from entering, and prevents exchange and circulation between reaction chamber space gases and external environment gas, then The loss that gas is generated in reaction chamber can be reduced, to be further ensured that the accuracy for generating result when gas measurement is analyzed；

3, weighing system is closed by protective enclosure, and weighing system region is made to form the first space, the first space and work Gas gas partition system is formed for the second space of reaction chamber and the third space of microwave cavity and the 4th space, is led to The pressure difference of itself and the adjustment of operator's impressed pressure between each space are crossed, each space gases different pressures control may be implemented System realizes control of the operator to each room atmosphere flow path, to guarantee the production quantity control to gas is generated in second space System is reduced as far as generating the loss of gas, guarantees the accuracy of result when analysis.

Detailed description of the invention

Fig. 1 is the utility model microwave Thermgravimetric Analysis Apparatus schematic perspective view；

Fig. 2 is the utility model microwave Thermgravimetric Analysis Apparatus longitudinal direction schematic cross-sectional view；

Fig. 3 is the portion I schematic enlarged-scale view in Fig. 2；

Fig. 4 is the cover structural diagram of base plate of the protective enclosure of weighing system in the utility model；

Fig. 5 is the portion A schematic enlarged-scale view in Fig. 2；

Fig. 6 is the portion B schematic enlarged-scale view in Fig. 2.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Referring to Fig. 1 and Fig. 2, a kind of microwave Thermgravimetric Analysis Apparatus of the present embodiment, including microwave cavity 10, to microwave resonance Chamber 10 provides microwave system 20, weighing system 30, temperature measuring system 40, the gas partition system of microwave, 50 He of control system External case frame 60, microwave cavity 10 is interior to be equipped with second space 70, and second space 70 is the anti-of microwave cavity 10 Room is answered, and the bottom plate 12 of microwave cavity 10 is equipped with the through-hole 11 being connected to second space 70, the weighing support of weighing system 30 Sample support bar 80 is provided on disk, the top of sample support bar 80 passes through through-hole 11 and stretches in second space 70, sample branch Strut 80 is used to support the reaction vessels for holding sample, such as reaction crucible, or directly supports sample；Gas subregion system System includes the first space 100 and second space 70, and microwave Thermgravimetric Analysis Apparatus further includes protective enclosure 90, and protective enclosure 90 surrounds First space 100, protective enclosure 90 include cover bottom plate 91 and the cover main body 92 being made of four cycle side plates, cover main body 92 Bottom end and cover bottom plate 91 are tightly connected, and the top of cover main body 92 and the bottom plate 12 of microwave cavity 10 are tightly connected, weighing system 30 are located in the first space 100 and are fixed on cover bottom plate 91, through-hole 11 be located in the first space 100 by the first space 100 with Second space 70 is connected to.

The weighing system 30 of the utility model microwave Thermgravimetric Analysis Apparatus is closed by protective enclosure 90, with external environment every Absolutely, then the problem that external air flow blows weighing system 30 and sample support bar 80 leads to weighing results inaccuracy is avoided, simultaneously Also it can reduce the influence of 30 measurement accuracy of extraneous vibration weighing system；Meanwhile weighing system 30 is closed by protective enclosure 90, And the through-hole 11 on 10 bottom surface of microwave cavity is also in enclosure space (the first space 100), so that protective enclosure 90 can hinder Only ambient atmos are entered in second space 70 by the through-hole 11, then without guaranteeing that the micro-positive pressure of reaction indoor gas also can be reduced The loss of gas is generated in second space 70, to be further ensured that the accuracy for generating result when gas measurement is analyzed；First space 100 and second space 70 be used as two gas partition spaces, can be by controlling the gas pressure in each space, such as by the first sky Between 100 connection air inlet pipe, to rise it is internal be passed through protection gas, so that its interior gas pressure is greater than the gas pressure in second space 70, And then the gas controlled in second space 70 will not be overflowed to the first space 100, it is raw in second space 70 to guarantee as much as possible It will not be lost at gas.

It further, is the influence for avoiding equipment vibration weighing system 30, in the present embodiment preferably, in cover main body 92 Bottom end and cover bottom plate 91 between junction be equipped with seal shock-proof component 110, such as silica gel strip, rubber strip etc..Specifically, as schemed Shown in 3, cover bottom plate 91 and cover main body 92 are by border flanged joint, the position contacted on cover bottom plate 91 with cover main body 92 It is equipped with a circle locating slot 93, seal shock-proof component 110 is in locating slot 93, while the height of seal shock-proof component 110 is big In the depth of locating slot 93, to play the role of damping and sealing between cover bottom plate 91 and cover main body 92.Certainly, locating slot It can also be provided in cover main body 92, be equal with the present embodiment effect, can be not particularly limited.

Also for the influence for reducing equipment vibration weighing system 30, further, microwave cavity 10 is whole solid It is connected on the roof of case frame 60, and protective enclosure 90 is connected to the bottom plate 12 of microwave cavity 10 in a manner of suspension type On.I.e. protective enclosure 90 is vacantly connected on the bottom plate 12 of microwave cavity 10 together with internal weighing system 30, cover bottom plate 91 It is not contacted with case frame 60, to reduce the contact point of protective enclosure 90 Yu apparatus casing frame 60 as far as possible, thus as far as possible Ground reduces the influence of equipment vibration weighing system 30.Meanwhile seal shock-proof is set between cover bottom plate 91 and cover main body 92 in addition When component 110, can the Aseismatic Design of weighing system 30 reach and advanced optimize.

As described above, influencing second space 70 in the gas reflux in second space 70 to the first space 100 in order to prevent The interior production quantity for generating gas, is provided with the first air inlet pipe 220, for being passed through guarantor into the first space 100 in protective enclosure 90 Gas is protected, consequently facilitating the gas pressure in the first space 100 of control, should ensure that in the first space 100 after being passed through protective gas Gas pressure be greater than the gas pressure in second space 70, then can be in this way since the gas pressure in the first space 100 is big It prevents the gas in second space 70 from flowing backward in reflux to the first space 100, avoid loss reaction gas and generates gas.

Specifically, it for second space 70, is enclosed by the bottom plate 12 of reaction chamber cover 71, lid 72 and microwave cavity 10 At reaction chamber cover 71 is in the tubular of upper and lower opening, can be cylinder, square tube, trapezoidal cylinder etc., preferably drum.Lid 72 and anti- The upper opening of room cover 71 is answered to cooperate, the lower end of reaction chamber cover 71 and 12 palette of bottom plate of microwave cavity 10；Instead Answer room cover 71 and 72 material of lid for quartzy or other do not absorb or absorb the few advanced low-k materials of microwave.Due to Reaction gas or protection gas are usually passed through when sample to be tested is handled in second space 70, and sample support bar 80 protrudes into second In space 70, the reactive gas current being passed through can impact sample support bar 80 to influence the accuracy of the measurement of weighing system 30, be Reduce impact of the reactive gas current to sample support bar 80 as much as possible, in the present embodiment, micropore is equipped in second space 70 Inner cylinder 120 is filtered, the present embodiment is specially the ceramic filter layer of tubular, and the top of sample support bar 80 is located at micro porous filtration inner cylinder In 120, and third space 130 is formed between micro porous filtration inner cylinder 120 and reaction chamber cover 71, gas partition system further includes The third space 130, third space 130 are communicated with third air inlet pipe 140, for being passed through reaction into third space 130 Gas or protection gas, namely reaction gas or protection gas are passed through into second space 70.Then when from third air inlet pipe 140 to third space When being passed through reaction gas or protection gas in 130, reaction gas or the filtering for protecting gas to first pass through micro porous filtration inner cylinder 120 enter back into micropore The inner space that filtering inner cylinder 120 is surrounded, air velocity is slowed down, since the top of sample support bar 80 is located at micropore mistake It filters in inner cylinder 120, then can reduce impact of the air-flow to sample support bar 80, prevent the measurement accuracy for shaking weighing system 30 Adverse effect.

At this time due to being provided with micro porous filtration inner cylinder 120, generates gas and be predominantly located at the surrounded inside of micro porous filtration inner cylinder 120 In space, it is similarly the gas reflux for preventing generating gas, is specifically prevented outside its reflux to micro porous filtration inner cylinder 120, preferably Ground, the gas pressure in third space 130 are greater than the gas pressure for the inner space that micro porous filtration inner cylinder 120 is surrounded.Pass through Control enters the pressure of the gas in third space 130, further avoids the loss for generating gas.

In order to carry out centralized collection to the generation gas in second space 70, in order to the analysis of next step, second space 70 Top be connected with outlet passageway 150, generate gas for reaction to be discharged, outlet passageway 150 can connect quartz ampoule, anti-for collecting It should generate gas, in the present embodiment, specific connection the surrounded inner space of micro porous filtration inner cylinder 120 of outlet passageway 150.

In addition, due to generalling use ground and class between the lid 72 of second space 70 and the mating surface of reaction chamber cover 71 Like sealing structure, after the product that is put to the test (such as tar) or repeatedly pick-and-place material repetitive operation, lid 72 and reaction chamber cover 71 Between can be poorly sealed, to generate gas leakage, i.e., the generation gas in second space 70 can from lid 72 and reaction chamber cover 71 it Between run out of to second space 70 so that and not all generation gas from outlet passageway 150 be discharged collect, that is, have part Gas is generated to lose.To solve this problem, the 4th space 170, gas subregion are additionally provided in the present embodiment in microwave cavity 10 System equally further includes the 4th space 170, and the 4th space 170 is the chamber shell 13(metalwork of microwave cavity 10) and reaction chamber cover Region between body 71, the 4th space 170 are communicated with the 4th air inlet pipe 180, for being passed through protection gas into the 4th space 170, Similarly, be passed through protection gas after should ensure that the 4th space 170 protection atmospheric pressure be greater than second space 70 in gas pressure, i.e., by It is big in the gas pressure in the 4th space 170, then the gas in second space 70 can be prevented due to reaction chamber cover 71 and lid Cooperate gas leakage that is not tight and generating between body 72, further avoids loss and generate gas.Specifically, for high temperature in second space 70 Sample of processing, such as sintering, burning etc., the settable insulating layer in the 4th space 170 completely cuts off 10 internal and external temperature of microwave cavity, If sample carries out low-temperature treatment, for example is only used for heating moisture etc., can no setting is required insulating layer, the 4th space 170 is only air Layer.

In conclusion the present embodiment microwave Thermgravimetric Analysis Apparatus, by the way that multiple spaces, i.e. the first space 100, second is arranged Space 70, third space 130 and the 4th space 170, the first space 100, third space 130,170 space of the 4th space connect Connect respective gas circuit, i.e. the first air inlet pipe 220, third air inlet pipe 140, the 4th air inlet pipe 180, device using when pass through control The gas pressure in each space can manually or automatically be controlled by gas meter 240 as shown in Figure 1, guarantee the gas in the first space 100 Body pressure is greater than the gas pressure in second space 70, and the gas pressure in third space 130 is greater than the gas in second space 70 The protection atmospheric pressure of pressure, the 4th space 170 is greater than the gas pressure in second space 70, realizes gas pressure zoning design, Each space gases different pressures control may be implemented, control of the operator to each room atmosphere flow path is realized, to guarantee Production quantity control to gas is generated in second space 70 is reduced as far as generating the loss of gas, guarantees the standard of result when analysis True property.

Microwave Thermgravimetric Analysis Apparatus, temperature measuring system usually select infrared measurement of temperature, in the prior art, if avoiding being arranged Gas leakage at infrared probe, usually in reaction chamber wall on infrared measurement of temperature through-hole be arranged infrared glass seal, in this way one side due to The barrier of glass will affect the measurement accuracy and measurement range of infrared probe, and another aspect infrared glass is by gas inside reaction chamber It is inaccurate to also result in infrared probe thermometric for the pollution of body (such as tar).To solve this problem, in the present embodiment, referring to fig. 4, Temperature measuring system 40 includes that there are three the threeway bracket 43 of access, threeway brackets for infrared temperature probe 41, quartz ampoule 42 and tool 43 are installed in 13 outside of chamber shell of microwave cavity 10, and the sound end of infrared temperature probe 41 is plugged in the first of threeway bracket 43 In a access, the outer end of quartz ampoule 42 is plugged in second access of threeway bracket 43, the third access of threeway bracket 43 Be connected with the 4th air inlet pipe 230, in thermometric to being passed through protection gas inside threeway bracket 43；The inner end of quartz ampoule 42 is protruded into In second space 70, and the axis of the axis of infrared temperature probe 41 and quartz ampoule 42 is on the same line, and infrared measurement of temperature is visited There are gap 44,230 face of the 4th air inlet pipe gaps 44 for the outer end of first 41 sound end and quartz ampoule 42.Pass through a quartz Pipe 42 moves to infrared temperature probe 41 outside microwave cavity 10, is protruded into inside second space by quartz ampoule 42, no setting is required Infrared glass piece is aligned inside quartz ampoule 42 by infrared temperature probe 41, and then is aligned in second space 70, directly to the second sky Between gas in 70 carry out thermometric, ensure that the precision and range of measurement；And when thermometric, from the 4th air inlet pipe 230 to threeway branch Protection gas is passed through inside frame 43, protection gas enters in quartz ampoule 42 in turn, on the one hand can prevent outside reaction gas reflux contaminated red Temperature probe 41, meanwhile, protection air-flow can rinse infrared temperature probe 41, keep probe cleaning, i.e., no setting is required infrared glass Glass piece, it is also ensured that the cleaning of temperature probe 41, and then guarantee its measurement accuracy.

Since the leveling of weighing system 30 is most important to its measurement accuracy, for convenience of the leveling at any time of weighing system 30, Microwave Thermgravimetric Analysis Apparatus further includes weighing leveling system in the present embodiment, specifically, as shown in Fig. 5 and Fig. 3, weighing leveling system System includes the multiple height adjustable casters 190 being connected on 60 bottom surface of case frame, corrects first of levelness in parallel in advance Bubble/air-bubble leveling ruler 200 and the second bubble/air-bubble leveling ruler 210；First bubble/air-bubble leveling ruler 200 is horizontally arranged at cover On bottom plate 91, the second bubble/air-bubble leveling ruler 210 correct its it is parallel with the first bubble/levelness of air-bubble leveling ruler 200 when It lies in a horizontal plane on weighing system 30；Case frame 60, which is equipped with, can be observed the first bubble/air-bubble leveling ruler 200 peep hole 61, as shown in Figure 1, chip glass can be installed on peep hole 61, to protect internal structure.The levelling principle for leveling system of weighing Be: the first bubble/air-bubble leveling ruler 200 and the second bubble/air-bubble leveling ruler 210 correct levelness in advance, since weighing is System 30 then carries out the leveling correction of weighing system 30, specifically, by second inside protective enclosure 90 in equipment assembling process Bubble/air-bubble leveling ruler 210 is lain in a horizontal plane on weighing system 30, observes the first bubble/air-bubble leveling ruler 200 and the second water Bubble/air-bubble leveling ruler 210 makes the two by adjusting height adjustable casters 190 while showing water if it does not show level simultaneously It is flat, when the two shows level simultaneously, show that weighing system 30 has leveled, the first bubble/air-bubble leveling ruler 200 and the second water Bubble/air-bubble leveling ruler 210 has corrected, and can remove the second bubble/air-bubble leveling ruler 210 at this time, continue the assembly of equipment, work as equipment After the assembly is completed, since the first bubble/air-bubble leveling ruler 200 and the second bubble/air-bubble leveling ruler 210 have corrected, then in use, The first bubble/air-bubble leveling ruler 200 only need to be observed, if it is not at level, makes it by adjusting height adjustable casters 190 Level, then weighing system 30 has accordingly leveled.The present embodiment ensure that the survey of weighing system 30 by setting weighing leveling system Accuracy is measured, and Levelling operation is simple and convenient.

The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model Protect range.

Claims (10)

1. a kind of microwave Thermgravimetric Analysis Apparatus provides microwave system, the weighing of microwave including microwave cavity, to microwave cavity The case frame of system, temperature measuring system, gas partition system, control system and outside, the microwave resonance is intracavitary to be equipped with As the second space of reaction chamber, and the bottom plate of the microwave cavity is equipped with the through-hole being connected to the second space, institute It states and is provided with sample support bar on the weighing tray of weighing system, the top of the sample support bar passes through the through-hole and stretches to In the second space；It is characterized by: the gas partition system includes the first space and the second space, the microwave Thermgravimetric Analysis Apparatus further includes protective enclosure, and the protective enclosure surrounds first space, and the protective enclosure includes cover bottom Plate and the cover main body being made of four cycle side plates, the bottom end of the cover main body and the cover bottom plate are tightly connected, the cover main body The bottom plate of top and the microwave cavity is tightly connected, and the weighing system is located in first space and is fixed on described On cover bottom plate, the through-hole is located in first space and is connected in first space with the second space.

2. microwave Thermgravimetric Analysis Apparatus according to claim 1, it is characterised in that: the bottom end of the cover main body and the cover Junction is equipped with seal shock-proof component between bottom plate.

3. microwave Thermgravimetric Analysis Apparatus according to claim 1 or 2, it is characterised in that: the microwave cavity is integrally solid It is connected on the roof of the case frame, and the protective enclosure suspension type is connected on the bottom plate of the microwave cavity.

4. microwave Thermgravimetric Analysis Apparatus according to claim 3, it is characterised in that: be provided with first in the protective enclosure Air inlet pipe, for being passed through protection gas into first space, it is empty that the gas pressure in first space is greater than described second Interior gas pressure.

5. microwave Thermgravimetric Analysis Apparatus according to claim 1, it is characterised in that: the second space is by reaction chamber cover The bottom plate of body, lid and the microwave cavity surrounds, and the reaction chamber cover is in the tubular of upper and lower opening, the lid and institute State the upper opening cooperation of reaction chamber cover, the lower end of the reaction chamber cover and the bottom plate sealing paste of the microwave cavity It closes；Micro porous filtration inner cylinder is equipped in the second space, the top of the sample support bar is located in the micro porous filtration inner cylinder, And third space is formed between the micro porous filtration inner cylinder and the reaction chamber cover, the gas partition system further includes institute Third space is stated, the third space is communicated with third air inlet pipe, for being passed through reaction gas or protection into the third space Gas.

6. microwave Thermgravimetric Analysis Apparatus according to claim 5, it is characterised in that: the gas pressure in the third space is big Gas pressure in the surrounded inner space of micro porous filtration inner cylinder.

7. microwave Thermgravimetric Analysis Apparatus according to claim 5, it is characterised in that: the top of the second space is connected with Outlet passageway generates gas for reaction to be discharged.

8. microwave Thermgravimetric Analysis Apparatus according to claim 7, it is characterised in that: the microwave resonance is intracavitary to be additionally provided with Four spaces, the gas partition system further include the 4th space, and the 4th space is the chamber shell of the microwave cavity With the region between the reaction chamber cover, the 4th space is communicated with the 4th air inlet pipe, for into the 4th space It is passed through protection gas, the protection atmospheric pressure in the 4th space is greater than the gas pressure in the second space.

9. microwave Thermgravimetric Analysis Apparatus according to claim 1, it is characterised in that: the temperature measuring system includes infrared There are three the threeway bracket of access, the threeway bracket is installed in the chamber of the microwave cavity for temperature probe, quartz ampoule and tool On the outside of shell, the sound end of the infrared temperature probe is plugged in first access of the threeway bracket, the quartz ampoule Outer end is plugged in second access of the threeway bracket, and the third access of the threeway bracket is connected with the 4th air inlet Pipe；The inner end of the quartz ampoule is protruded into the second space, and the axis of the infrared temperature probe and the quartz ampoule Axis is on the same line.

10. microwave Thermgravimetric Analysis Apparatus according to claim 1, it is characterised in that: the microwave Thermgravimetric Analysis Apparatus is also Including leveling system of weighing, the weighing leveling system includes the multiple height adjustable foots being connected on the case frame bottom surface Wheel corrects levelness parallel the first bubble/air-bubble leveling ruler and the second bubble/air-bubble leveling ruler in advance；First water Bubble/air-bubble leveling ruler is horizontally arranged on the cover bottom plate, and second bubble/air-bubble leveling ruler is correcting itself and described first Bubble/air-bubble leveling ruler levelness is lain in a horizontal plane on the weighing tray of the weighing system when parallel；The case frame Being equipped with can be observed first bubble/air-bubble leveling ruler peep hole.