CN87210110U - Jar (or case) type vaccum device for measuring real density of powder substance - Google Patents
Jar (or case) type vaccum device for measuring real density of powder substance Download PDFInfo
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- CN87210110U CN87210110U CN 87210110 CN87210110U CN87210110U CN 87210110 U CN87210110 U CN 87210110U CN 87210110 CN87210110 CN 87210110 CN 87210110 U CN87210110 U CN 87210110U CN 87210110 U CN87210110 U CN 87210110U
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Abstract
The utility model is named as jar (or case) type vaccum device for measuring real density of powder substance which relates to the technical fields of dust removal art and powder technology. The utility model comprises a vacuum container with a plurality of bottles and a liquid reservoir. Liquid feeding can be carried through in vacuum, and a plurality of test specimens can be measured in one time and the average can be obtained. The test time is saved about 40%, air bleeding can be carried through at the situation of, occurring no spatter and having precise test result. The utility model can be widely used in all industries measured the true density of powder such as fire resistant, containing oxygen atom, dust removal art, pneumatic conveying, etc.
Description
The utility model is the improvement of existing vacuum method being measured powder real density device, belongs to dedusting technology, technical field of powder engineering.
The vacuum plant that the pycnometer vacuum method is measured the powder real density has several patterns.A kind of is Japanese Jing Shi vacuum plant, and its core component is multiway stopcock valve (well one paddy guiding principle one is write, dust collect plant, 2-6, Nikkan Kogyo Shimbun, clear and in September, 38).It is that health research institute of China Preventive Medicial Science Institute is recommended.See accompanying drawing 1, wherein 1 is pycnometer; 2 is surge flask; 3 is moisture separator; 4 is the multiway stopcock valve; 5 is reservoir; 6 is filling funnel; 7 is pressure vacuum gauge (or vacuum manometer); 11 for meeting vacuum pump place (or vacuum pump); 19 are logical vacuum pump stopcock; 20 are logical pressure vacuum gauge stopcock; 21 is the blast cock valve; 22 is the D cock valve; Second kind is the improvement to first kind of device, as surge flask is changed to Y-pipe etc., to reach the purpose that can survey two samples at every turn.See accompanying drawing 2, wherein 1 is pycnometer; 3 is moisture separator; 4 is the multiway stopcock valve; 5 is reservoir; 7 is vacuum manometer; 8 is Y-pipe; 9 is gas outlet; 10 is liquid injection pipe; 11 is vacuum pump; 19 are logical vacuum pump stopcock; 20 are logical vacuum manometer stopcock; 23 fluid injection stopcocks; 24 are the emptying spring clamp; 25 are the draining spring clamp; 26 are the fluid injection spring clamp; 27 is fixed support.These two kinds of apparatus features are small and exquisite, and are glassware entirely, can be observed the situation of bleeding with liquid feeding.Weak point is not, powder easily splashes when bleeding, and the emulsion tube that is connected with pycnometer is easily flat, is unfavorable for bleeding.The third is to make vacuum plant (well Yi Gu guiding principle one is write, dust collect plant 2-6, Nikkan Kogyo Shimbun, clear and in September, 38) with vacuum dryer.Be characterized in the vacuum tightness height, help test.Weak point is, liquid feeding can not carry out in a vacuum, after the powder immersion liquid, because the surface tension effects of liquid is unfavorable for the discharge of powder air, bleeding has bubble to break often, cause the liquid splash that contains powder, the 4th kind is the vacuum plant that recommend international standard ISO787/10～1981, sees accompanying drawing 3, and wherein 1 is pycnometer; 11 for meeting the vacuum pump place; 12 is suction flask; 13 is tap funnel; 23 are the fluid injection stopcock; 21 is the drain cock valve.Characteristics are all-glass works, are convenient to the observation experiment situation, and are small and exquisite, but U type pipe place is perishable.Use above-mentioned four kinds of device to test, also have its common shortcoming, that is: can only make one or two sample at every turn.Parallel sample is few, and the parallel condition of parallel sample is poor, measure the average of powder real density, needs to survey several times, to the degree of accuracy that records the result is affected.
The utility model is that society releases the new device that a kind of pycnometer vacuum method is measured the powder real density.Testing system device of the present utility model is seen accompanying drawing 4.Wherein 1 is pycnometer; 5 is reservoir; 7 is vacuum manometer; 11 is vacuum pump; 14 is vacuum tank; 15 is the pycnometer carriage; 16 is minim pipette; 17 is rubber plug; 18 is exsiccator; 19 are logical vacuum pump stopcock; 21 is the drain cock valve; 23 are the fluid injection stopcock; 28 is exhaust tube.
Primary structure of the present utility model is: a vacuum tank with cover (14) is arranged, and it is shaped as cylinder formula or box.Place a pycnometer carriage (15) in the vacuum tank, carriage can slide, extract out or put into along cylinder mouth direction.Can place 4(or 6 on the carriage) individual pycnometer (1).Directly over vacuum tank, bore 4 holes, a bonding minim pipette (16) on each hole, minim pipette and proportion bottleneck be centering one by one, and stopcock (23) is housed on each minim pipette, is used for the quantity of controlling liquid injection pycnometer.Second critical piece is reservoir, is positioned at the top of vacuum tank.The short tube of reservoir bottom communicates with every minim pipette centering of vacuum tank.Vacuum tank and reservoir respectively have an exhaust tube, and drying device (18) joins with vacuum pump (11).Vacuum manometer (7) communicates with vacuum tank (14).
Vacuum tank of the present utility model and reservoir are glass (or organic glass) goods.Vacuum tank is a glass with cover garden cylinder, and the cylinder mouth is located at the front side, polishes the surface of contact of cylinder mouth and lid, and it is tight to make it to coincide.During use, on the surface of contact of cylinder mouth and lid, coat vaseline or vacuum grease, with anti-gas-leak.Four short tubes of reservoir bottom, during fabrication, must with 4 minim pipette centerings of vacuum tank.
The advantage of this utility model: can powder not take place splash at dry powder body situation lower pumping; Can be at liquid feeding under the vacuum condition; Can survey 4(or 6 at every turn) individual parallel sample; The collimation of parallel sample is good; Once test can obtain the average of sample real density, and it is about 40% to reduce the test duration, and this device passes through and experimental results demonstrate that test result is accurate, and is respond well.
Use the step of the utility model mensuration powder real density as follows:
1, gets 4 of clean pycnometers of drying, be taken at 110 ± 5 ℃ and dry experiment powder 40～80 grams that are cooled to room temperature down.
2, weighing pycnometer on ten thousand/balance, quality is with M
1Expression.
3, in each pycnometer, pack into 5～10 the gram dry powder, weighing on balance respectively is with M
2Expression, M=M
2-M
1, M is the quality of powder sample.
4, the pycnometer that powder is housed is placed on the carriage, puts into vacuum reservoir again, cut-out tap valve 19,22,23 takes off rubber plug 17, injects 900 milliliters of liquid media in reservoir, covers rubber plug 4.Start vacuum pump, open stopcock 19,, continued again to bleed 30 minutes when surplus pressure in the vacuum tank reaches 20 mm Hg when following.
5, the cut-out tap valve 19, open stopcock 21, close vacuum pump.
6, open stopcock 23 successively, fluid injection covers bottle stopper till be lower than bottleneck 12-15 millimeter at leisure in pycnometer, and making in the bottle and in the kapillary of bottle stopper does not have bubble.
7, pycnometer was put into water bath with thermostatic control constant temperature (20 ° ± 0.5 ℃) 30～40 minutes, take out, dry, weigh, quality is represented with R.
8, sample in the pycnometer and liquid are outwelled, peace and quiet, the liquid medium in the reservoir that reinjects takes out, and covers bottle cap, and making does not have bubble in the bottle.
9, pycnometer was put into water bath with thermostatic control constant temperature (20 ° ± 0.5 ℃) 30～40 minutes, take out, dry, weigh, quality is represented with M.
10, calculate the powder real density by following formula.
ρ＝ (Mρ
2)/(M+W+R)
ρ is the powder real density in the formula, ρ
2Be the liquid medium real density.
The utility model is rational in infrastructure, and is easy to use, can be widely used in fire-resistant, cement, flour, dedusting technology, strength and carry dyestuff etc. all need to be measured in the industry of powder real density.
Claims (3)
1, a kind of vacuum plant of measuring the powder real density mainly is made up of exsiccator [18], vacuum pump [11], vacuum manometer [7] and vacuum plant, the utility model vacuum plant has been characterised in that a cylinder formula (or box) vacuum tank [14] and a reservoir [5], reservoir is positioned on the vacuum tank, and both link to each other with emulsion tube by four short tubes separately.
2, cylinder formula according to claim 1 (or box) vacuum tank, it is characterized in that this container is glass with cover (or organic glass) cylinder (or case) (14), directly over it, be bonded with 4(or 6) individual minim pipette (16), one pycnometer carriage (15) is arranged in vacuum tank, can place 4(or 6 on the carriage) individual pycnometer (1), proportion bottleneck and minim pipette (16) be centering one by one.
3, reservoir according to claim 1 (5) is characterized in that, in the bottom adhesive of reservoir 4(or 6 is arranged) individual short tube, make its with vacuum tank directly over the 4(or 6 that bonds) individual minim pipette one by one centering communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210110 CN87210110U (en) | 1987-07-10 | 1987-07-10 | Jar (or case) type vaccum device for measuring real density of powder substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210110 CN87210110U (en) | 1987-07-10 | 1987-07-10 | Jar (or case) type vaccum device for measuring real density of powder substance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87210110U true CN87210110U (en) | 1988-06-08 |
Family
ID=4825086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87210110 Withdrawn CN87210110U (en) | 1987-07-10 | 1987-07-10 | Jar (or case) type vaccum device for measuring real density of powder substance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87210110U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320348C (en) * | 2005-03-04 | 2007-06-06 | 中国地质大学（武汉） | Method for measuring real density of double-density bottle powder |
| CN100385248C (en) * | 2004-06-01 | 2008-04-30 | 肇庆市风华锂电池有限公司 | Method for testing battery electrode material filling properties |
| CN101929995A (en) * | 2009-06-25 | 2010-12-29 | 宝山钢铁股份有限公司 | Method for determining content of pulverized coal, coke and iron-containing charge in blast furnace dust |
| CN103994947A (en) * | 2014-04-15 | 2014-08-20 | 青岛大学 | Fiber specific gravity testing method |
-
1987
- 1987-07-10 CN CN 87210110 patent/CN87210110U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385248C (en) * | 2004-06-01 | 2008-04-30 | 肇庆市风华锂电池有限公司 | Method for testing battery electrode material filling properties |
| CN1320348C (en) * | 2005-03-04 | 2007-06-06 | 中国地质大学（武汉） | Method for measuring real density of double-density bottle powder |
| CN101929995A (en) * | 2009-06-25 | 2010-12-29 | 宝山钢铁股份有限公司 | Method for determining content of pulverized coal, coke and iron-containing charge in blast furnace dust |
| CN103994947A (en) * | 2014-04-15 | 2014-08-20 | 青岛大学 | Fiber specific gravity testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |