CN104971787A - Quantitatively gas-leakage and pressure-relieving sealed microwave high-pressure digestion tank - Google Patents
Quantitatively gas-leakage and pressure-relieving sealed microwave high-pressure digestion tank Download PDFInfo
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- CN104971787A CN104971787A CN201410145327.8A CN201410145327A CN104971787A CN 104971787 A CN104971787 A CN 104971787A CN 201410145327 A CN201410145327 A CN 201410145327A CN 104971787 A CN104971787 A CN 104971787A
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Abstract
The invention discloses a quantitatively gas-leakage and pressure-relieving sealed microwave high-pressure digestion tank which includes a tank support, a sample dissolving cup, a cup cover and a protective sleeve. The protective sleeve is arranged in a manner of sleeving the dissolving cup closely in the tank support. The cup cover includes a plug part which is sealedly inserted into the dissolving cup and a cover part which covers the mouth of the dissolving cup in a sealing manner. The quantitatively gas-leakage and pressure-relieving sealed microwave high-pressure digestion tank also includes at least one elastic body and an abutting part. A plurality of gas channels are formed in the plug part, wherein one end of the gas channels are communicated with the side edge, which is abutted against the side wall of the dissolving cup, of the plug part, and the other end of the gas channels are communicated with the end surface, which is inserted into the dissolving cup, of the plug part. An opening, which is aligned with the mouth dissolving cup, of the abutting part is threadly connected into the interior of the tank support and is abutted against to the end surface, which is far away from the dissolving cup, of the cover part across the elastic body. By means of arrangement of the elastic body between the cup cover and the abutting part and the abutting part which is threadly connected into the tank support from the tank support, a constant safe pressure-relieving value of the quantitatively gas-leakage and pressure-relieving sealed microwave high-pressure digestion tank can be ensured.
Description
Technical field
The present invention relates to a kind of quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure.
Background technology
Namely microwave digestion method is be placed in microwave dissolver by the closed container that sample and reagent are housed to carry out heating using microwave.In microwave heating process, sample and reagent generation chemical reaction, make temperature and pressure in tank constantly raise rapidly, if instrument does not have a set of effective robot control system(RCS) and lose heart to rush down compression functions, will cause the Bao Zha Wei Insurance of closed digestion tank.Light then damage equipment is heavy then injure personnel.For this reason, the safety problem how effectively solving counteracting tank is the important topic that current apparatus manufacturer must be studied.
At present, as shown in Figure 1, some micro-wave diminishing pots design the exhaust duct 102 of diameter an about 1mm on bowl cover 101, exhaust duct 102 is pressed a slice thickness be the plastic tab 103 of 0.3 1 0.5 Te Fulong, when pressure increase in tank is to when exceeding plastic tab 103 bearing strength, plastic tab 103 is blown brokenly and release pressure by gases at high pressure.The shortcoming of this method is: because the material manufacturing bowl cover and thin slice is engineering plastics, by different temperatures in heating process, the impact of different pressures and different heating time can make them produce the distortion of different situations, exhaust duct is because being constantly squeezed, aperture is reduced even block, in addition, thin slice changes because of the impact thickness of the gas that is stressed and shape, compression strength is changed, is difficult to maintain a safety relief value accurately; Due to the easy deformed damaged of thin slice, so regulation is often new with once changing tune, this just makes troublesome poeration, and turn increases consumptive material; In exhaust duct, easy cleaning does not easily produce cross pollution; Because exhaust duct diameter only has a millimeter once gases at high pressure have little time to release instantaneously when there is superpressure, easily there is counteracting tank bursting accident.
Fig. 2 ~ 5 are the micro-wave diminishing pot of another two kinds of prior aries, and as shown in Figure 2-5, cover 104 is threaded connection compression bowl cover 105 makes counteracting tank airtight.When pressure increase in tank is to the Cheng Shou Li Time exceeding cover 104, cover 104 top can be out of shape, so bowl cover 105 rises, gases at high pressure release from bleed passage.The defect of such technical scheme is: the material of cover 104 is engineering plastics, through different temperatures, pressure, the effect of heat time, the aging distortion of easy generation and lose the original physical property of material, therefore, a fixing safety relief value cannot be ensured equally to ensure the capable and security of the Zheng Chang Jin of Xiao Solution process.This is also reduce even dry-out through often there will be sample in the not cleer and peaceful tank of Specimen eliminating after clearing up end; On the other hand, at the bottom of the molten sample cup strength of materials, and the screw thread place be connected with cover is again stress concentration point, so easily occur that rim of a cup is pulled off phenomenon, so counteracting tank is withstand voltage not high.
Summary of the invention
The technical problem to be solved in the present invention be in order to overcome prior art cannot ensure fixing safety relief value and when molten sample cup internal gas pressure jumps the insufficient defect causing security low of pressure release, provide a kind of and can set safety relief value and the closed microwave high-pressure digestion tank of pressure is rushed down in higher quantitatively the losing heart of security.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure, it includes a tank frame, a molten sample cup, a bowl cover and a protective sleeve, described protective sleeve is sheathed on outside described molten sample cup at described tank frame inner close fitting, described bowl cover includes airtight piston part and the airtight cap covering the opening of described molten sample cup filling in described molten sample cup, its feature is, the described closed microwave high-pressure digestion tank rushing down pressure that quantitatively loses heart also includes: at least one elastomer and an abutting part;
Described piston part is provided with some gas passages, and the side that described molten sample cup sidewall is close in one end and the described piston part of some described gas passages is connected, and the end face that described molten sample cup is filled in the other end and described piston part is communicated with;
Described abutting part just to the opening spiral of described molten sample cup to be screwed into described tank frame inner, and abut the end face of described cap away from described molten sample cup across described elastomer.
That is, abutting part compresses elastomer and then pressed glass and is placed on the rim of a cup of molten sample cup, and abutting part that to be spiral be screwed into tank frame is inner, the instruments such as torque spanner can be used to control the pressure (namely can set the pressure of compression) compressed.And the gas passage on the piston part of bowl cover is obstructed (wall of cup of molten sample cup is led in one end outlet of gas passage) when bowl cover sealing is pressed on molten sample cup, and when pressure in molten sample cup rises in the process of elevated pressures (abutting part exceeding setting compresses elastomeric pressure) gradually, piston part is by the pressure slowly jack-up in molten sample cup, be positioned at piston part to expose (rim of a cup from molten sample cup) closer to one end of the gas passage of cap, pressure is released.After pressure is released, due to elastomeric elastic force effect, bowl cover is depressed heavy, is returned to original state (pressure of that setting that pressure presses down lower than abutting part in instant sample cup).
Preferably, one end of described gas passage is being connected from the side that described cap is close to described molten sample cup sidewall apart from different positions respectively, and the end face that described molten sample cup is filled in the other end and described piston part is communicated with.
Preferably, described abutting part abuts described elastomer with the torsion that one presets.
That is, if the raising speed of the pressure in molten sample cup is very fast, under effect of inertia, in the short time, piston part is by the higher position of the air pressure jack-up in molten sample cup.So, the gas passage exposed from the rim of a cup of molten sample cup is just more, and pressure is also just more easily released.And after pressure is released, due to elastomeric elastic force effect, it is heavy that bowl cover is depressed, be returned to original state (pressure of that setting that pressure presses down lower than abutting part in instant sample cup).
Preferably, described elastomer is made of metal.
Herein, design flexibility body is made of metal mainly because metal is more suitable for heating in microwave field, and not by temperature, the impact of pressure and heat time, can forever use.
Preferably, described gas passage includes at least one first gas passage and at least one second gas passage, and the area in the interior cross section of described first gas passage is less than the area in the interior cross section of described second gas passage;
The distance of the position that the distance of the position that described first gas passage is communicated with the side of described piston part and described cap is communicated with the side of described piston part than described second gas passage and described cap is nearer.
That is, position is thinner closer to the first gas passage of cap, is suitable for the pressure in the molten sample cup of the release of a little when pressure slowly increases; And the second gas passage be positioned at below the first gas passage is thicker, being applicable to pressure in molten sample cup discharges gas faster when the short time surges, slowly-releasing pressure.
Preferably, described abutting part is an explosion block.Explosion block can rupture when pressure increases sharply, and the gas in molten sample cup can be discharged fast from above-mentioned the second thicker gas passage.
Preferably, an explosion layer is provided with between described abutting part and described elastomer, described abutting part is cylindricality, described elastomer is provided with a hole groove on the position of the described abutting part of correspondence, the cross section of described hole groove is greater than the cross section of described abutting part, and the cross section of described hole groove is less than the cross section of described explosion layer.
That is, the abutting part of cylindricality can under the effect of a reaction force, explosion lamination is broken, at this moment the abutting part of cylindricality will fall in hole groove that elastomer is arranged, so the activity space of bowl cover has just occurred, the second gas passage is able to be exposed to release pressure fast from the rim of a cup of molten sample cup.Rise suddenly and sharply in the short time that above-mentioned reaction force derives from gas pressure in molten sample cup.So just can prevent from molten sample cup from exploding to damage.
Preferably, described explosion layer and described abutting part one-body molded, be provided with at least one blade in the groove of described hole, described blade is used for cutting off described explosion layer when air pressure in described molten sample cup increases rapidly.
That is, arranging blade makes explosion layer can cut off rapidly explosion layer when exploding by more efficient air pressure in molten sample cup.
Preferably, one is provided with between described elastomer and described cap for holding elastomeric elastomer box.
Preferably, the end face of described cap away from described molten sample cup is provided with one for the position-limit mechanism spacing to described elastomer box.
Herein, such setting can make the closed microwave high-pressure digestion jar structure that rushes down pressure of quantitatively losing heart of the present invention more reasonable.
Positive progressive effect of the present invention is: by arranging elastomer between bowl cover and abutting part, then is screwed into abutting part from tank frame external spiral, makes the closed microwave high-pressure digestion tank that rushes down pressure of quantitatively losing heart of the present invention can ensure a fixing safety relief value; On the other hand, by the gas passage that setting position is different, make of the present invention quantitatively lose heart the closed microwave high-pressure digestion tank rushing down pressure both can release pressure slowly, also can the release pressure of safety when pressure rises suddenly and sharply in molten sample cup.
Accompanying drawing explanation
Fig. 1 is the structural representation of the micro-wave diminishing pot of prior art.
Fig. 2 is the structural representation of the micro-wave diminishing pot of prior art.
Fig. 3 is the structural representation of the micro-wave diminishing pot of prior art.
Fig. 4 is the structural representation of the micro-wave diminishing pot of prior art.
Fig. 5 is the structural representation of the micro-wave diminishing pot of prior art.
Fig. 6 is that quantitatively losing heart of the embodiment of the present invention 1 rushes down the structural representation of the closed microwave high-pressure digestion tank of pressure.
Fig. 7 is that quantitatively losing heart of the embodiment of the present invention 1 rushes down the structural representation of the bowl cover of the closed microwave high-pressure digestion tank of pressure.
Fig. 8 is that quantitatively losing heart of the embodiment of the present invention 1 rushes down the post-rift structural representation of pressure-bearing plate of the closed microwave high-pressure digestion tank of pressure.
Fig. 9 is that quantitatively losing heart of the embodiment of the present invention 2 rushes down the structural representation of the closed microwave high-pressure digestion tank of pressure.
Figure 10 is that quantitatively losing heart of the embodiment of the present invention 2 rushes down the post-rift structural representation of pressure-bearing plate of the closed microwave high-pressure digestion tank of pressure.
Detailed description of the invention
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.
Embodiment 1
Fig. 6 is that quantitatively losing heart of the present embodiment rushes down the structural representation of the closed microwave high-pressure digestion tank of pressure, Fig. 7 is that quantitatively losing heart of the present embodiment rushes down the structural representation of the bowl cover of the closed microwave high-pressure digestion tank of pressure, as shown in figs. 6-7, the closed microwave high-pressure digestion tank rushing down pressure that quantitatively loses heart that the present embodiment relates to includes: tank frame 2, molten sample cup 7, bowl cover, protective sleeve 6, elastomer 3 and the pressure-bearing screw 1 as abutting part, protective sleeve 6 is sheathed on outside molten sample cup 7 at tank frame 2 inner close fitting, bowl cover includes airtightly fills in the piston part 42 of molten sample cup 7 and the airtight cap 41 covering the opening of molten sample cup 7.
Piston part 42 is provided with 4 the first gas passages 51 and 4 the second gas passages 52, first gas passage 51 is being connected from the side that cap 41 is close to molten sample cup 7 sidewall apart from different positions and piston part 42 respectively with one end of the second gas passage 52, and the end face that molten sample cup 7 is filled in the other end and piston part 42 is communicated with;
Wherein, the area in the interior cross section of the first gas passage 51 is less than the area in the interior cross section of the second gas passage 52.The distance of the position that the distance of the position that the first gas passage 51 is communicated with the side of piston part 42 and cap 41 is communicated with the side of piston part 42 than the second gas passage 52 and cap 41 is nearer.
In addition, pressure-bearing screw 1 just to the opening spiral of molten sample cup 7 to be screwed into tank frame 2 inner, and abut the end face of cap 41 away from molten sample cup 7 across elastomer 3.And pressure-bearing screw 1 abuts elastomer 3 with the torsion (the present embodiment is set to 2 newton) that one presets.
That is, position is thinner closer to the first gas passage 51 of cap 41, is suitable for the pressure in the molten sample cup 7 of the release of a little when pressure slowly increases; And the second gas passage 52 be positioned at below the first gas passage 51 is thicker, being applicable to pressure in molten sample cup 7 discharges gas faster when the short time surges, slowly-releasing pressure.
Pressure-bearing screw 1 compresses elastomer 3 and then pressed glass is placed on the rim of a cup of molten sample cup 7, and pressure-bearing screw 1 to be spiral be screwed into that tank frame 2 is inner, the instruments such as torque spanner can be used to control the pressure (namely can set the pressure of compression) compressed.And the first gas passage 51 on the piston part 42 of bowl cover and the second gas passage 52 are obstructed (one end of the first gas passage 51 and the second gas passage 52 exports the wall of cup leading to molten sample cup 7) when bowl cover sealing is pressed on molten sample cup 7, and when pressure in molten sample cup 7 rises in the process of elevated pressures (the pressure-bearing screw 1 exceeding setting compresses the pressure of elastomer 3) gradually, piston part 42 is by the pressure slowly jack-up in molten sample cup 7, be positioned at piston part 42 to expose (rim of a cup from molten sample cup 7) closer to one end of the first gas passage 51 of cap 41, pressure is released.After pressure is released, due to the elastic force effect of elastomer 3, bowl cover is depressed heavy, is returned to original state (pressure of that setting that pressure presses down lower than pressure-bearing screw 1 in instant sample cup 7).
If the raising speed of the pressure in molten sample cup 7 is very fast, under effect of inertia, in the short time, piston part 42 is by the higher position of the air pressure jack-up in molten sample cup 7.So, the second gas passage 52 exposes from the rim of a cup of molten sample cup 7, and pressure is also just more easily released.And after pressure is released, due to the elastic force effect of elastomer 3, it is heavy that bowl cover is depressed, be returned to original state (pressure of that setting that pressure presses down lower than pressure-bearing screw in instant sample cup 7).
Elastomer 3 is made of metal.
Herein, design flexibility body 3 is made of metal mainly because metal is more suitable for heating in microwave field, and not by temperature, the impact of pressure and heat time, can forever use.
Fig. 8 is that quantitatively losing heart of the present embodiment rushes down the post-rift structural representation of pressure-bearing plate of the closed microwave high-pressure digestion tank of pressure, as shown in Figure 8, pressure-bearing screw 1 is provided with pressure-bearing plate 11 between elastomer 3, pressure-bearing plate 11 is one-body molded with pressure-bearing screw 1, pressure-bearing screw 1 is cylindricality, elastomer 3 is provided with hole groove 31 on the position of corresponding pressure-bearing screw 1, and the cross section of hole groove 31 is greater than the cross section of pressure-bearing screw 1, and the cross section of hole groove 31 is less than the cross section of pressure-bearing plate 11.
That is, the pressure-bearing screw 1 of cylindricality can under the effect of a reaction force, pressure-bearing plate 11 is broken, at this moment the pressure-bearing screw 1 of cylindricality will fall in the hole groove 31 of setting on elastomer 3, so the activity space of bowl cover has just occurred, the second gas passage 52 is able to be exposed to release pressure fast from the rim of a cup of molten sample cup 7.Rise suddenly and sharply in the short time that above-mentioned reaction force derives from gas pressure in molten sample cup 7.So just can prevent from molten sample cup 7 from exploding to damage.
The elastomer box 32 for holding elastomer 3 is provided with between elastomer 3 and cap 41.
The end face of cap 41 away from molten sample cup 7 is provided with one for the stopper slot 43 spacing to elastomer box 32.
Embodiment 2
Fig. 9 is that quantitatively losing heart of embodiment 2 rushes down the structural representation of the closed microwave high-pressure digestion tank of pressure, Figure 10 is that quantitatively losing heart of embodiment 2 rushes down the post-rift structural representation of pressure-bearing plate of the closed microwave high-pressure digestion tank of pressure, as shown in Fig. 9 ~ 10, embodiment 2 is with the difference of embodiment 1, piston part 42 is only provided with some (the present embodiment is 4) first gas passage 51(and does not namely arrange the second gas passage).
In addition, cutting blade 5 is provided with between elastomer 3 and pressure-bearing plate 11.Tighten pressure-bearing screw 1 during use to abut pressure-bearing plate 11 pressure-bearing plate 11 and cutting blade 5 are compressed.
The principle of embodiment 2 is: when the pressure in molten sample cup 7 is less, and pressure jacking piston part 42 is risen, and makes the first gas passage 51 expose with release pressure; When the pressure in molten sample cup 7 rises rapidly, pressure jacking piston part 42, and then promotion elastomer 3 applies larger pressure towards pressure-bearing plate 11, the cutting blade 5 between elastomer 3 and pressure-bearing plate 11 is made to cut off pressure-bearing plate 11, at this moment the pressure-bearing screw 1 of cylindricality will fall in the hole groove 31 of setting on elastomer 3, so the activity space of bowl cover has just occurred, whole piston part 42 is deviate from from the rim of a cup of molten sample cup 7, and the gas in molten sample cup 7 is exposed to release pressure fast on a large scale.So just can prevent from molten sample cup 7 from exploding to damage.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that this only illustrates, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection scope of the present invention.
Claims (10)
1. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure, it includes a tank frame, a molten sample cup, a bowl cover and a protective sleeve, described protective sleeve is sheathed on outside described molten sample cup at described tank frame inner close fitting, described bowl cover includes airtight piston part and the airtight cap covering the opening of described molten sample cup filling in described molten sample cup, it is characterized in that, the described closed microwave high-pressure digestion tank rushing down pressure that quantitatively loses heart also includes: at least one elastomer and an abutting part;
Described piston part is provided with some gas passages, and the side that described molten sample cup sidewall is close in one end and the described piston part of some described gas passages is connected, and the end face that described molten sample cup is filled in the other end and described piston part is communicated with;
Described abutting part just to the opening spiral of described molten sample cup to be screwed into described tank frame inner, and abut the end face of described cap away from described molten sample cup across described elastomer.
2. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 1, it is characterized in that, one end of described gas passage is being connected from the side that described cap is close to described molten sample cup sidewall apart from different positions respectively, and the end face that described molten sample cup is filled in the other end and described piston part is communicated with.
3. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 1, it is characterized in that, described abutting part abuts described elastomer with the torsion that one presets.
4. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 1, it is characterized in that, described elastomer is made of metal.
5. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 2, it is characterized in that, described gas passage includes at least one first gas passage and at least one second gas passage, and the area in the interior cross section of described first gas passage is less than the area in the interior cross section of described second gas passage;
The distance of the position that the distance of the position that described first gas passage is communicated with the side of described piston part and described cap is communicated with the side of described piston part than described second gas passage and described cap is nearer.
6. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 1, it is characterized in that, described abutting part is an explosion block.
7. quantitatively losing heart as described in Claims 1 to 5 rushes down the closed microwave high-pressure digestion tank of pressure, it is characterized in that, an explosion layer is provided with between described abutting part and described elastomer, described abutting part is cylindricality, described elastomer is provided with a hole groove on the position of the described abutting part of correspondence, the cross section of described hole groove is greater than the cross section of described abutting part, and the cross section of described hole groove is less than the cross section of described explosion layer.
8. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 7, it is characterized in that, described explosion layer and described abutting part one-body molded, be provided with at least one blade in the groove of described hole, described blade is used for cutting off described explosion layer when air pressure in described molten sample cup increases rapidly.
9. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 8, is characterized in that, being provided with one for holding described elastomeric elastomer box between described elastomer and described cap.
10. the quantitatively disappointing closed microwave high-pressure digestion tank rushing down pressure as claimed in claim 9, is characterized in that, the end face of described cap away from described molten sample cup is provided with one for the position-limit mechanism spacing to described elastomer box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145327.8A CN104971787B (en) | 2014-04-11 | 2014-04-11 | The quantitative discouraged closed microwave high-pressure digestion tank for rushing down pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145327.8A CN104971787B (en) | 2014-04-11 | 2014-04-11 | The quantitative discouraged closed microwave high-pressure digestion tank for rushing down pressure |
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| CN104971787B CN104971787B (en) | 2017-08-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109310978A (en) * | 2016-05-02 | 2019-02-05 | Cem有限公司 | High temperature pressure digestion container system with double action sealing element |
| CN113333045A (en) * | 2021-06-07 | 2021-09-03 | 北京牡丹电子集团有限责任公司数字科技中心 | Sealed crucible with pressure relief function and preparation method thereof |
| CN114397169A (en) * | 2022-01-04 | 2022-04-26 | 池州市农产品质量安全监测中心 | High-pressure digestion tank for heavy metal detection of agricultural products |
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| CN114397169B (en) * | 2022-01-04 | 2023-12-01 | 池州市农产品质量安全监测中心 | High-pressure digestion tank for heavy metal detection of agricultural products |
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Effective date of registration: 20170622 Address after: 200235 Shanghai city Xuhui District Guanshengyuan Road No. 227 South third floor Applicant after: Xinyi Microwave Chemistry Tech Co., Ltd. Address before: 200030, room 20, No. 1023, Lane 1607, two South Road, Zhongshan, Shanghai, Xuhui District Applicant before: Huang Tingguo Applicant before: Huang Jing |
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