CN2160105Y

CN2160105Y - Sedimentation-analytical balance

Info

Publication number: CN2160105Y
Application number: CN 93206611
Authority: CN
Inventors: 连嗣南
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-16
Filing date: 1993-03-16
Publication date: 1994-03-30
Anticipated expiration: 2003-03-16

Abstract

A sedimentation-analytical balance is formed by adding a sedimentation weight rack which is parallel to an optical analytical balance weight rack below the sedimentation weight rack, and arranging a sedimentation receiver which is composed of a sedimentation cylinder and a sedimentation disc below the left end of a beam. The balance not only has the function of testing the particle size and the distribution condition of the powder, but also has the function of an optical analytical balance. The balance is simple in structure, high in accuracy and convenient to operate, 12-18 samples can be tested by each person every day, the electricity and the samples are saved, the balance is safe and reliable, no dust pollution is caused, and the balance is suitable for industrial conventional testing of 5-1200 mu m particle size powder and scientific research.

Description

Precipitation analysis balance

The utility model is a kind of balance, is specially adapted to measure powder granularity and distribution thereof with the settled weight method, has the function of optical analysis balance simultaneously.

Existing sedimentation balance, as Gallenkamp sedimentation balance, Shimaelzu sedimentation balance etc., all be to start with electromagnetism, automatically the raise the price principle of balance granules sedimentation, the amount of space of at every turn raising the price is constant, cause in the fine fraction fractional error bigger, dispersion particle concentration big (1～5%), complicated operation, easy break-down.These sedimentation balances only are fit to measure the usefulness of following granulometric range of 100 μ m and laboratory study, are not suitable for industrial conventional routine test work.To all using sieve formula greater than the polydispersion body more than the 100 μ m.Various disadvantages such as and there is the size of mesh mutability in sieve formula, and it is low to measure precision, and labour intensity is big, and power consumption consumption sample is many, and static adheres to, and technology unsafe factor and dust infringement operating personnel are healthy are very limited its use.Quite a few industrial powder granularity upper limit is arranged at present more than 500 microns, existing sedimentation balance and sieve formula all can't accurately be measured.

The purpose of this utility model provides a kind of sedimentation balance, can measure 5～1200 μ m powder granularity size and distribution situations thereof, and have the function of optical analysis balance.

The utility model takes following measure to achieve the above object: on the shell of double plate optical analysis balance, set up the circle sign indicating number of raise the price frame and a control thereof parallel with the former frame of raising the price below the frame of raising the price; Below the damping box of its crossbeam A end, be provided with one by settlement barrel and the sedimentation receiver that places the sedimentation dish in the settlement barrel to form, the sedimentation dish hangs on the hook that links to each other with crossbeam A end.Take off the sedimentation receiver, change sample weighting disk, just become a double plate optical analysis balance.

The utlity model has simple in structurely, easy to operate, economize on electricity economizes sample, and measurement range is wide, the degree of accuracy height, and relative error is less than ± 1.5%, is suitable for testing powder granularity size and distribution situation thereof in the conventional and scientific research of industry.Can be used as the optical analysis balance again uses.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the C-C view of Fig. 1;

Fig. 3 is 5 cam diagrams of main cam group;

Fig. 4 is 3 cam diagrams of auxiliary cam group.

With reference to Fig. 1, on the shell 13 of double plate optical analysis balance, be positioned at the former frame 5 of raising the price below, set up the circle sign indicating number 3 of raise the price frame 4 and a control thereof parallel with the frame 5 of raising the price.Crossbeam 7 two ends of double plate optical analysis balance are represented with A and B respectively.The B end of crossbeam 7 is provided with a sedimentation receiver for adding circle sign indicating number end below A end damping box 9, it is by transparent or semitransparent settlement barrel 2 and places the sedimentation dish 1 in it to constitute.Settlement barrel 2 is that the oil resistance polyester is made, and sedimentation dish 1 is that by brass rod is fixed on brass disk center and forms.The other end of brass rod can be connected with the hook that crossbeam 7A end links to each other by nylon wire.The sedimentation receiver is arranged on shell 13 outsides, promptly on the base plate under the damping box 9 hole is arranged, and is connected up and down by this hole by nylon wire.The sedimentation receiver also can be arranged in the shell 13, and this can decide as required.Below crossbeam 7A end damping box 9, a balance weight body 10 can be set, make it as when sedimentation balance uses, playing equilibrium activity.The limit pendulum device 12 of a pointer 11 can be set, as the hunting range of limit pointer 11 on pillar 8.

With reference to Fig. 2, Fig. 3, the frame 4 of raising the price is the one group of main cam group 16 that is made of 5 different cams 20,21,22,23,24 of the shared phase place of tip edge tooth paddy.The outer fixed axis gear 14 coaxial with main cam group 16 is 12 teeth.Main cam group 16 and outer fixed axis gear 14 are fixed on the outer dead axle 15.Outer fixed axis gear 14 is divided into 12 class (phase place) with main cam group 16, and these 12 class are divided into again: first section is 1～5 grade, and every grade adds circle sign indicating number 200mg; Second section is 6～11 grades, and every grade adds circle sign indicating number 100mg; The 12nd grade is 0 grade.And the circle sign indicating number of the 3rd section 10mg level is finished by the frame 5 control circle sign indicating numbers 6 of raising the price.Now main cam group 16 is transferred yardage value and program listing as follows:

Annotate: "+"---add this circle sign indicating number; "-"---do not add this circle sign indicating number.

With reference to Fig. 2, Fig. 3, Fig. 4, the frame 4 of raising the price also can be made up of main cam group 16 and auxiliary cam group 18.Main cam group 16 and outer fixed axis gear 14 are as in the previous paragraph.Auxiliary cam group 18 is to be made of 3 tip edges and the different cam 25,26,27 of the shared phase place of tooth paddy.The interior fixed axis gear 19 coaxial with auxiliary cam group 18 is 6 teeth.Auxiliary cam group 18 and interior fixed axis gear 19 are fixed on the interior dead axle 17.Interior fixed axis gear 19 is divided into 6 class (phase place) with auxiliary cam group 18, and the 6th grade is 0 grade, and 1～5 grade is the 3rd section, is that examination adds circle sign indicating number section, bears the circle sign indicating number of transferring the 10mg level.I.e. examination earlier adds 80mg circle sign indicating number, and is long as the settling time, can change 50mg or 30mg or 20mg or 10mg into.Now auxiliary cam group 18 is transferred yardage value and program listing as follows:

Test operating procedure summary: put positive sedimentation receiver, in settlement barrel 2, inject the sedimentation medium, hang up sedimentation dish 1, make the pointer 11 of sedimentation balance reach zero balance, close balance then, add 200mg circle sign indicating number 3 in advance.Before test job begins, 5 gram samples are added in the settlement barrel 2, stir evenly with sedimentation dish 1.Hang up sedimentation dish 1 immediately, and open day gentle table that clocks that starts simultaneously, the particles settling amount is balance 200mg circle sign indicating number just, when promptly pointer 11 points to zero point, records the time, and adds circle sign indicating number 3 for the second time again, repeats previous action, up to testing.According to each accumulative total add code value and the test duration is made curve map, the line data of going forward side by side is handled, and just can determine the size and the distribution situation thereof of powder granularity.Such sedimentation balance can be tested 12～18 samples for each person every day.

Claims

1, a kind of sedimentation-analytical balance, comprise shell [13], pillar [8], crossbeam [7], pointer [11], circle sign indicating number [6], the frame of raising the price [5], scale pan, damping box [9], of the present utility model being characterised in that on the described shell [13] set up a raise the price frame [4] parallel with the frame of raising the price [5] and circle sign indicating number [3] thereof; Below the damping box [9] of described crossbeam [7] A end, be provided with one by settlement barrel [2] and the sedimentation receiver that places the sedimentation dish [1] in it to form, sedimentation dish [1] hangs over crossbeam [7] A and holds on the hook that links to each other.

2, sedimentation according to claim 1---analytical balance is characterized in that the described frame of raising the price (4) is to constitute one group of main cam group (16) by 5 cams (20,21,22,23,24), and the outer fixed axis gear (14) coaxial with it is 12 teeth.

3, sedimentation according to claim 1---analytical balance, the main cam group (16) that it is characterized in that the described frame of raising the price (4) is to be made of 5 cams (20,21,22,23,24), the outer fixed axis gear (14) coaxial with it is 12 teeth, auxiliary cam group (18) is to be made of 3 cams (25,26,27), and the interior fixed axis gear (19) coaxial with it is 6 teeth.

4,, it is characterized in that below the damping box (9) of described crossbeam (7) A end a balance weight body (10) being set according to claim 1 or 2 or 3 described sedimentation---analytical balances.

5,, it is characterized in that to be provided with on the described pillar (8) the limit pendulum device (12) of a pointer (11) according to claim 1 or 2 or 3 described sedimentation---analytical balances.

6, sedimentation according to claim 4---analytical balance is characterized in that can being provided with on the described pillar (8) the limit pendulum device (12) of a pointer (11).

7, sedimentation according to claim 6---analytical balance is characterized in that described sedimentation receiver also can be arranged in the shell (13).

8, sedimentation according to claim 4---analytical balance is characterized in that described sedimentation receiver also can be arranged in the shell (13).

9, sedimentation according to claim 5---analytical balance is characterized in that described sedimentation receiver also can be arranged in the shell (13).