CN202869929U - Device for testing dust particle size distribution by using pipette method - Google Patents
Device for testing dust particle size distribution by using pipette method Download PDFInfo
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- CN202869929U CN202869929U CN 201220540536 CN201220540536U CN202869929U CN 202869929 U CN202869929 U CN 202869929U CN 201220540536 CN201220540536 CN 201220540536 CN 201220540536 U CN201220540536 U CN 201220540536U CN 202869929 U CN202869929 U CN 202869929U
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- transfer pipet
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Abstract
The utility model discloses a device for testing dust particle size distribution by using a pipette method. The device comprises liquid gravity settling bottles, bottle plugs covering on the bottle mouths at the upper parts of the liquid gravity settling bottles, and a plurality of liquid absorbing and moving elements installed on the bottle plugs, wherein the liquid gravity settling bottles are arranged in the vertical direction; a plurality of installing ports for installing the liquid absorbing and moving elements are formed in the bottle plugs; the liquid absorbing and moving elements comprise glass tubes arranged in the liquid gravity settling bottles and pipettes and liquid absorbing elements on the outer sides of the liquid gravity settling bottles; the pipettes and the liquid absorbing elements are communicated with the glass tubes through connecting tubes; the glass tubes are arranged in the vertical direction; and the heights of the bottoms of the glass tubes in the plurality of liquid absorbing and moving elements are all different from each other. The device is simple in structure, reasonable in design, convenient to machine, manufacture and assemble, easy and convenient to use and operate and good in use effect, and not only is the testing efficiency of the dust particle size distribution greatly improved, but also the testing precision is improved.
Description
Technical field
The utility model belongs to dust size distribution testing technology field, especially relates to a kind of transfer pipet method and measures the proving installation that dust size distributes.
Background technology
The transfer pipet method claims again the liquid gravity sedimentation, its be particles according to different sizes under Action of Gravity Field, different this principle of the settling velocity in liquid is tested.The speed that particle has when making the constant speed natural subsidence in liquid (or gas) medium is called settling velocity, and its size can represent with Stokes formula.During actual test, the powder sample is placed in the liquid medium, natural subsidence, through behind the certain hour, the particle of different-diameter will be distributed in the liquid medium of differing heights.According to this situation, in the different settling times, take out a certain amount of liquid on the different settling heights, weigh the powder quality contained in the liquid of taking out, the particle diameter that just can determine powder distributes.In the transfer pipet method test process, the liquid medium that adopts is called dispersion liquid.It is the traditional methods of a kind of classics that the transfer pipet method is measured particle size distribution, and to compare its physical significance simple and clear with the Modern Laser particle size analyzer, and apparatus structure is simple, thereby possesses wider application prospect.
The dust size distribution tester is adopted in existing laboratory, mainly comprise liquid gravity sedimentation bottle, enema syringe, measuring cup, analytical balance, transparent Water Tank with Temp.-controlled etc., wherein on the liquid gravity sedimentation bottle with sedimentation bottle, transfer pipet and pear-shaped containers, and on this pear-shaped containers with stop,threeway.Before the test, utilize first Stokes formula and according to the test philosophy of liquid gravity sedimentation, calculate the predetermined imbibition time of a plurality of different-grain diameter powders that need test.In the actual test process, mainly may further comprise the steps: the first, with in advance weighing and the dry tested powder of the crossing dispersion liquid used with test, be added in the liquid gravity sedimentation bottle, and with the sedimentation bottle rotate up and down, shaken several times, so that powder is uniformly dispersed, after stopping to rock, begin to use manual time-keeping in dispersion liquid, as the initial settling time, write down simultaneously room temperature; The second, the predetermined imbibition time that goes out by calculated in advance is carried out imbibition: actual when carrying out imbibition, by at the uniform velocity being pulled outwardly syringe, so that the liquid that is loaded in the liquid gravity sedimentation bottle slowly rises along transfer pipet, when being drawn onto the 10mL scale mark, closure piston immediately, and the 10mL liquid of institute's sucking-off entered in the discharging tube; Subsequently, at the uniform velocity push inward syringe, make the interior 10mL liquid of discharging tube by in the measuring cup of pressing the people to weigh; Then inhale distilled water flushing 10mL container by discharging tube, in the wash-down water row people measuring cup, flushing is carried out 2～3 times; Three, according to the imbibition method described in the step 2, and carry out repeatedly imbibition operation according to the predetermined imbibition time of realizing calculating, until draw out the powder of the minimum grain size that requirement measures; Write down simultaneously room temperature; Four, the liquid that is obtained in all measuring cups is carried out the drying processing, and to the powder quality m in each measuring cup after the drying
iCarry out weighing.At last, to the data analysis arrangement that test draws, just can draw the particle diameter distribution tests result of tested powder.
But in the actual test process, above-mentioned existing dust size distribution tester exists following defective and deficiency: the first, repeatability is relative relatively poor: can not repeat repeatedly to test, thereby input cost is high, the wasting of resources is more serious; The second, minute is relatively long: owing to the imbibition position of containing the liquid of a plurality of different-grain diameter powders is same position, the actual powder that must wait corresponding particle diameter when carrying out imbibition all is precipitated to this imbibition position just can carry out when following, thereby the predetermined imbibition time that can only go out according to calculated in advance, by first to after several times the liquid that contains the different-grain diameter powder is drawn respectively, thereby in the test process settling time of required wait longer; Three, dust size distribution tests result is not accurate enough: when adopting syringe to carry out imbibition, sealing property is bad, and is feasible theoretically, but imbibition difficulty in the practical operation, be difficult to accurately draw quantitative liquid to transfer pipet, thereby cause dust size distribution tests result's precision lower.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, provide a kind of transfer pipet method to measure the proving installation that dust size distributes, it is simple in structure, reasonable in design, processing and fabricating and easy to assembly and use easy and simple to handle, result of use good, not only significantly improved the determination efficiency that dust size distributes, and measuring accuracy is higher.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of transfer pipet method is measured the proving installation that dust size distributes, it is characterized in that: comprise liquid gravity sedimentation bottle, mount cover the bottle stopper on the top bottleneck of described liquid gravity sedimentation bottle and be installed in a plurality of imbibitions on the bottle stopper and move the liquid element that described liquid gravity sedimentation bottle is vertically to laying; Have on the described bottle stopper a plurality of respectively for a plurality of described imbibitions and move the installing port that the liquid element is installed, and the quantity of a plurality of described installing ports and a plurality of described imbibitions and to move the quantity of liquid element identical; Described imbibition and move the liquid element and comprise transfer pipet and the imbibition element that is laid in the glass tube in the described liquid gravity sedimentation bottle and is positioned at the described liquid gravity sedimentation bottle outside, described transfer pipet and imbibition element all are connected with glass tube by connecting pipe, and described glass tube is vertically to laying; A plurality of described imbibitions and to move the bottom height of the glass tube in the liquid element all not identical.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: described connecting pipe is the threeway glass tube, and three mouths of pipe of described threeway glass tube are respectively the mouth of pipe one, the mouth of pipe two and the mouth of pipe three; The described mouth of pipe one, the described mouth of pipe two and the described mouth of pipe three join with glass tube, transfer pipet and imbibition element respectively.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: a plurality of described installing ports and a plurality of described imbibition and the quantity of moving the liquid element are three.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: described imbibition element has pipetting hose, rubber pipette bulb and is clipped on tongs on the pipetting hose; One end and the rubber pipette bulb of described pipetting hose join, and the described mouth of pipe three of its other end and described threeway glass tube joins.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: between described glass tube and the described mouth of pipe one and between described transfer pipet and the described mouth of pipe two, all connect by emulsion tube.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: described liquid gravity sedimentation bottle is cylindrical graduated cylinder.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: a plurality of described installing ports are even laying.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, it is characterized in that: the diameter of described bottle stopper from top to bottom dwindles gradually, and the manhole of described installing port for installing for glass tube, described glass tube from top to bottom plug-in mounting enters in the described liquid gravity sedimentation bottle.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, it is characterized in that: be provided with the rule that the volume of its inside institute carrying liquid is measured on the lateral wall of described liquid gravity sedimentation bottle, three described imbibitions and the bottom height that moves the glass tube in the liquid element respectively with described rule in 100ml scale mark, 300ml scale mark mutually concordant with the 500ml scale mark.
Above-mentioned a kind of transfer pipet method is measured the proving installation that dust size distributes, and it is characterized in that: the volume of described cylindrical graduated cylinder is 1000ml, and the volume of described transfer pipet is 10ml.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and processing and fabricating convenience, input cost is low.
2, easy to assembly, mainly formed by elements such as graduated cylinder, threeway glass tube, glass tube, transfer pipet and imbibition elements.
3, use is easy and simple to handle, and can be repeatedly used, and testing cost is lower.
4, minute is shorter, can carry out sampling and measuring three different settling heights, thereby has significantly shortened the stand-by period of powder precipitation, has improved the determination efficiency that dust size distributes.
5, less to the disturbance of the liquid that fills in the liquid gravity sedimentation bottle, thereby dust size distribution tests precision is higher.
In sum, the utility model is simple in structure, reasonable in design, processing and fabricating and easy to assembly and use easy and simple to handle, result of use good, not only significantly improved the determination efficiency that dust size distributes, and measuring accuracy is higher.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-cylindrical graduated cylinder; 2-bottle stopper; 3-1-glass tube;
3-2-transfer pipet; 3-3-imbibition element; 3-31-pipetting hose;
3-32-rubber pipette bulb; 3-33-tongs; 3-4-threeway glass tube;
3-5-emulsion tube.
Embodiment
As shown in Figure 1, the utility model comprises liquid gravity sedimentation bottle, mount cover the bottle stopper 2 on the top bottleneck of described liquid gravity sedimentation bottle and be installed in a plurality of imbibitions on the bottle stopper 2 and move the liquid element, and described liquid gravity sedimentation bottle is vertically to laying.Have on the described bottle stopper 2 a plurality of respectively for a plurality of described imbibitions and move the installing port that the liquid element is installed, and the quantity of a plurality of described installing ports and a plurality of described imbibitions and to move the quantity of liquid element identical.Described imbibition and move the liquid element and comprise transfer pipet 3-2 and the imbibition element 3-3 that is laid in the glass tube 3-1 in the described liquid gravity sedimentation bottle and is positioned at the described liquid gravity sedimentation bottle outside, described transfer pipet 3-2 and imbibition element 3-3 all are connected with glass tube 3-1 by connecting pipe, and described glass tube 3-1 is vertically to laying.A plurality of described imbibitions and to move the bottom height of the glass tube 3-1 in the liquid element all not identical.Each described imbibition and move that the quantity of included glass tube 3-1, transfer pipet 3-2 and imbibition element 3-3 is one in the liquid element.
In the present embodiment, described connecting pipe is threeway glass tube 3-4, and three mouths of pipe of described threeway glass tube 3-4 are respectively the mouth of pipe one, the mouth of pipe two and the mouth of pipe three.The described mouth of pipe one, the described mouth of pipe two and the described mouth of pipe three join with glass tube 3-1, transfer pipet 3-2 and imbibition element 3-3 respectively.
In the present embodiment, a plurality of described installing ports and a plurality of described imbibition and the quantity of moving the liquid element are three.
Be provided with the rule that the volume of its inside institute carrying liquid is measured on the lateral wall of described liquid gravity sedimentation bottle, three described imbibitions and the bottom height that moves the glass tube 3-1 in the liquid element respectively with described rule in 100ml scale mark, 300ml scale mark mutually concordant with the 500ml scale mark.
During actual the use, can be according to concrete needs, a plurality of described installing ports and a plurality of described imbibition and the quantity of moving the liquid element are adjusted accordingly.
In the present embodiment, described imbibition element 3-3 is by pipetting hose 3-31, rubber pipette bulb 3-32 and be clipped on tongs 3-33 on the pipetting hose 3-31.An end and the rubber pipette bulb 3-32 of described pipetting hose 3-31 join, and the described mouth of pipe three of its other end and described threeway glass tube 3-4 joins.
During actual the connection, between described glass tube 3-1 and the described mouth of pipe one and between described transfer pipet 3-2 and the described mouth of pipe two, all connect by emulsion tube 3-5.
Described liquid gravity sedimentation bottle is cylindrical graduated cylinder 1, and a plurality of described installing ports are even laying.
In the present embodiment, the diameter of described bottle stopper 2 from top to bottom dwindles gradually, and the manhole of described installing port for installing for glass tube 3-1, and described glass tube 3-1 from top to bottom plug-in mounting enters in the described liquid gravity sedimentation bottle.
In the present embodiment, the volume of described cylindrical graduated cylinder 1 is 1000ml, and the volume of described transfer pipet 3-2 is 10ml.
Before the actual test, because three described imbibitions and to move the imbibition position of the glass tube 3-1 bottom in the liquid element all not identical, thereby utilize first Stokes formula and according to the test philosophy of liquid gravity sedimentation, calculate in advance three described imbibitions and move the liquid element predetermined imbibition time of corresponding imbibition position.During actual the use, use operating process of the present utility model is as follows:
Step 3, carry out imbibition according to three described imbibitions that precompute and predetermined imbibition time of moving the liquid element: actual when carrying out imbibition, rubber pipette bulb 3-32 carries out at the uniform velocity imbibition, liquid in the cylindrical graduated cylinder 1 slowly rises along glass tube 3-1, and slowly flow into by threeway glass tube 3-4 in the transfer pipet 3-2 of correspondence, block the lower end of transfer pipet 3-2 during imbibition with the forefinger finger, when liquid reaches 10mL in the transfer pipet 3-2, clamp with tongs 3-33 pipetting hose 3-31 immediately, then unclamp forefinger, the 10mL liquid in the transfer pipet 3-2 is slowly put into measuring cup;
Step 4, according to the imbibition method described in the step 3, and repeat the imbibition operation according to the predetermined imbibition time of realizing calculating, until draw out the powder of the minimum grain size that requirement measures; Write down simultaneously room temperature;
Step 5, the liquid of obtained in all measuring cups is carried out drying process, and to the powder quality m in each measuring cup after the drying
iCarry out weighing.At last, to the data analysis arrangement that test draws, just can draw the particle diameter distribution tests result of tested powder.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (10)
1. a transfer pipet method is measured the proving installation that dust size distributes, it is characterized in that: comprise liquid gravity sedimentation bottle, mount cover at the bottle stopper (2) on the top bottleneck of described liquid gravity sedimentation bottle and be installed in a plurality of imbibitions on the bottle stopper (2) and move the liquid element that described liquid gravity sedimentation bottle is vertically to laying; Have on the described bottle stopper (2) a plurality of respectively for a plurality of described imbibitions and move the installing port that the liquid element is installed, and the quantity of a plurality of described installing ports and a plurality of described imbibitions and to move the quantity of liquid element identical; Described imbibition and move the liquid element and comprise transfer pipet (3-2) and the imbibition element (3-3) that is laid in the glass tube (3-1) in the described liquid gravity sedimentation bottle and is positioned at the described liquid gravity sedimentation bottle outside, described transfer pipet (3-2) and imbibition element (3-3) all are connected with glass tube (3-1) by connecting pipe, and described glass tube (3-1) is vertically to laying; A plurality of described imbibitions and to move the bottom height of the glass tube (3-1) in the liquid element all not identical.
2. measure the proving installation that dust size distributes according to a kind of transfer pipet method claimed in claim 1, it is characterized in that: described connecting pipe is threeway glass tube (3-4), and three mouths of pipe of described threeway glass tube (3-4) are respectively the mouth of pipe one, the mouth of pipe two and the mouth of pipe three; The described mouth of pipe one, the described mouth of pipe two and the described mouth of pipe three join with glass tube (3-1), transfer pipet (3-2) and imbibition element (3-3) respectively.
3. measure the proving installation that dust sizes distribute according to claim 1 or 2 described a kind of transfer pipet methods, it is characterized in that: a plurality of described installing ports and a plurality of described imbibition and the quantity of moving the liquid element are three.
4. measure the proving installation that dust size distributes according to a kind of transfer pipet method claimed in claim 2, it is characterized in that: described imbibition element (3-3) has pipetting hose (3-31), rubber pipette bulb (3-32) and is clipped on tongs (3-33) on the pipetting hose (3-31); One end of described pipetting hose (3-31) and rubber pipette bulb (3-32) join, and the described mouth of pipe three of its other end and described threeway glass tube (3-4) joins.
5. measure the proving installation that dust size distributes according to a kind of transfer pipet method claimed in claim 2, it is characterized in that: between described glass tube (3-1) and the described mouth of pipe one and between described transfer pipet (3-2) and the described mouth of pipe two, all connect by emulsion tube (3-5).
6. measure the proving installation that dust size distributes according to claim 1 or 2 described a kind of transfer pipet methods, it is characterized in that: described liquid gravity sedimentation bottle is cylindrical graduated cylinder (1).
7. measure the proving installation that dust size distributes according to claim 1 or 2 described a kind of transfer pipet methods, it is characterized in that: a plurality of described installing ports are even laying.
8. measure the proving installation that dust size distributes according to claim 1 or 2 described a kind of transfer pipet methods, it is characterized in that: the diameter of described bottle stopper (2) from top to bottom dwindles gradually, and the manhole of described installing port for installing for glass tube (3-1), described glass tube (3-1) from top to bottom plug-in mounting enters in the described liquid gravity sedimentation bottle.
9. measure the proving installation that dust size distributes according to a kind of transfer pipet method claimed in claim 3, it is characterized in that: be provided with the rule that the volume of its inside institute carrying liquid is measured on the lateral wall of described liquid gravity sedimentation bottle, three described imbibitions and the bottom height that moves the glass tube (3-1) in the liquid element respectively with described rule in 100ml scale mark, 300ml scale mark mutually concordant with the 500ml scale mark.
10. measure the proving installation that dust size distributes according to a kind of transfer pipet method claimed in claim 6, it is characterized in that: the volume of described cylindrical graduated cylinder (1) is 1000ml, and the volume of described transfer pipet (3-2) is 10ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540536 CN202869929U (en) | 2012-10-19 | 2012-10-19 | Device for testing dust particle size distribution by using pipette method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540536 CN202869929U (en) | 2012-10-19 | 2012-10-19 | Device for testing dust particle size distribution by using pipette method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869929U true CN202869929U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220540536 Expired - Fee Related CN202869929U (en) | 2012-10-19 | 2012-10-19 | Device for testing dust particle size distribution by using pipette method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202869929U (en) |
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2012
- 2012-10-19 CN CN 201220540536 patent/CN202869929U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131019 |