CN2033901U

CN2033901U - Continuous sampling sample divider

Info

Publication number: CN2033901U
Application number: CN 88206349
Authority: CN
Inventors: 史荣义
Original assignee: Beijing General Research Institute of Mining and Metallurgy
Current assignee: Beijing General Research Institute of Mining and Metallurgy
Priority date: 1988-06-03
Filing date: 1988-06-03
Publication date: 1989-03-08

Abstract

The utility model relates to a continuous shrinkage type division machine for preparing analysis samples of coal or other granular materials. After the original sample is put into the division machine, the division can be automatically carried out twice: the first time division ratio is 1/2, 1/3 and … … 1/24; the second reduction ratio is 1/2, 1/3 … … 1/12, etc. And adjusting the sample dividing umbrella according to actual needs to obtain 36 division ratios from 1/2 to 1/288, thereby preparing the analysis sample meeting the requirements.

Description

Continuous quartering machine for test samples

The utility model relates to and a kind ofly prepares contracting continuously of coal or other bulk granular material analytical sample and get type division machine.

Though it is dissimilar that the division machine of now general preparation analytical sample has, they are all got principle by intermittently contracting and carry out work, the part (Fig. 1, the blacking part among a) in the just column former state stream of getting that promptly contracts.Because of the former state that feeds the division machine is not a homogeneous, get type division machine so intermittently contract with this class, the instant variation that feeds division machine former state quality be can't all capture, thereby the accuracy of division and the representativeness of sample influenced.

By retrieval and consult domestic and international interrelated data, and find no the division machine that contracts continuously and get bulk granular material.

Task of the present utility model, just provide a kind of contracting continuously and get type division machine, the instant of the former state quality that feeds the division machine is changed, can both not be reflected in the positive sample that contraction goes out with once not leaking, make the division process have higher accuracy, make representative higher sample.

The utility model is made up of critical pieces such as umbrella hat, branch sample umbrella, ring groove, drawer wheel and gearings.Umbrella hat 1 is driven to do by central shaft 2 and turns clockwise 60～80 rev/mins of rotating speeds.Back-up ring is arranged around the umbrella hat.The branch sample umbrella that the umbrella hat below is made up of exumbrella 4 and interior umbrella 5.Exumbrella and interior umbrella all are to have the relative angle 6 that accounts for umbrella cover area 1/2 and 7 hollow frustum of a cone (referring to Fig. 3) on umbrella cover, and both lappings are branch sample umbrella in one.Divide the sample umbrella to be driven to do with the concentric middle sleeve 8 of central shaft 2 and be rotated counterclockwise, 40～50 rev/mins of rotating speeds divide the sample umbrella to rotate with hand.The lower edge of exumbrella has 10 gap 17, and the handgrip 18 of inboard, umbrella lower edge is stuck in the gap in being contained in, and interior exumbrella just forms one; As handgrip is extracted from gap, interior exumbrella can also relatively rotate, the angle difference of rotating, the angle 6 of exumbrella and 7 formed sections sample open area of the angle of interior umbrella and with the long-pending ratio A(in minute whole inclined-plane of sample umbrella exumbrella be division than) all corresponding different, the A value has following relation with the ratio of exumbrella rotational angle X:

X＝90°－180°A

Around dividing the sample umbrella ring groove 9 is arranged, scraper plate 10 is housed in the groove, bottom land has a discharge chute 11.Divide drawer wheel 12 is housed under the sample umbrella, the drawer wheel is divided into 12 compartments, all can put into one in each compartment and connect sample drawer bucket 13 with blade.The drawer wheel is placed on the chassis 14, and the outer sleeve 15 concentric by central shaft drives, and the drawer wheel can be done turn clockwise 30～40 rev/mins of rotating speeds.

This shows that the utility model is actually a umbrella hat, divides sample umbrella and drawer wheel to make the division machine of concentric guiding, friction speed rotation.

Fig. 1 is a bulk granular material division schematic diagram;

Fig. 2 contracts to get type sample splitter synoptic diagram continuously;

Fig. 3 is a branch sample umbrella structural representation.

In the drawings, A is an exumbrella, and B is interior umbrella; A is the batch (-type) sampling theorem, b is that former state flows on the shape cap with columnar samples, when c is the umbrella hat rotation columnar samples rheology is flowed for reversing the tubular sample, d intercepts sample for dividing the sample umbrella from reverse tubular sample stream, e is the twin-feed spiral band shape for the sample of intercepting, and f is that drawer wheel is thinly sliced hurricane band (is example with the single head spiral) to fall into again and connect sample drawer bucket; 1 is umbrella hat, and 2 is central shaft, and 3 is back-up ring, 4 is exumbrella, and 5 is interior umbrella, and 6 is the exumbrella angle, 7 is interior umbrella angle, and 8 is middle sleeve, and 9 is ring groove, 10 is scraper plate, and 11 is the discharge chute, and 12 are the drawer wheel, 13 for connecing sample drawer bucket, and 14 is the chassis opening, and 15 is outer sleeve, 16 is the discharge funnel, and 17 is gap, and 18 is handgrip.

The utility model can carry out twice division automatically to the former state that drops into: the division ratio of sample division for the first time is 1/2,1/3,1/4 ... 1/24; For the second time the division ratio be 1/2,1/3,1/4 ... 1/12 etc.; Twice division ratio of sample is 1/2～1/288.

Operational circumstances of the present utility model is summarized as follows:

With the former state of preparing division be column give on umbrella hat 1 (Fig. 1, b), after the rotation changing of the relative positions produces certain immixture, be reverse tubular sample stream (Fig. 1, c) drop on carry out on the branch sample umbrella of reverse rotation division (Fig. 1, d).Drop on coal sample on the umbrella cover and be slipped to after 9 li of the ring grooves around the branch sample umbrella, scraped in the discharge chute 11 by scraper plate 10 immediately, division for the first time that Here it is abandon sample; Fall the positive sample that the sample that cuts in the sample mouth is exactly division for the first time.Positive sample equals to cut sample open area and the ratio A that divides the whole inclined-plane of sample umbrella exumbrella just with the ratio (being the division ratio) of former state, therefore, borrow handgrip 17 to regulate the relative position of interior exumbrella, according to actual needs, can obtain 10 division ratios such as 1/2,1/3,1/4,1/6,1/8,1/10,1/12,1/16,1/20 and 1/24.Fall into the coal sample of cutting the sample mouth and be twin-feed spiral band shape (Fig. 1, e), fallen into by drawer round cut skive again and connect sample drawer bucket 13, according to the drawer bucket quantity that is placed in the drawer wheel, can obtain division ratio for the second time by actual needs, i.e. 6 division ratios such as 1/2,1/3,1/4,1/6,1/12 and 5/12; The coal sample that falls into the compartment of not putting the drawer bucket drops on the chassis 14, division for the second time that Here it is abandon sample, the sample that falls into the drawer bucket that connects material is exactly the positive sample of final division.Because of the division machine has twice division, according to actual needs, can obtain 36 kinds of division ratios from 1/2～1/288.

During operation,, can obtain total division ratio as long as according to the sample weight after former state general assembly (TW) and the division; Through collocation, just can obtain the division ratio that the first time and division for the second time should be got.Then handgrip 18 is extracted from gap 17, exumbrella relatively rotates required angle in the order, just can obtain the ratio of division for the first time; In compartment, put into corresponding drawer bucket by actual needs, just can obtain the ratio of division for the second time.Like this, once just can be with the former state division to required sample weight.

Claims

1, a kind of by umbrella hat 1, divide contracting continuously that sample umbrella, ring groove 9 and drawer wheel 12 form to get the type sample splitter, it is characterized in that umbrella hat, divide sample umbrella and drawer wheel to drive by central shaft 2, middle sleeve 8 and outer sleeve 15 respectively, carry out concentric, incorgruous, friction speed ground rotation: umbrella hat turns clockwise, 60～80 rev/mins of rotating speeds, divide the sample umbrella to be rotated counterclockwise, rotating speed 40-50 rev/min, drawer wheel 11 turns clockwise 30～40 rev/mins of rotating speeds.

2, division machine as claimed in claim 1 is characterized in that the branch sample umbrella that become with interior umbrella 5 lappings by exumbrella 4, both can by in sleeve 8 driven rotary, also available hand rotates.

3, as claim 1 and 2 described division machines, it is characterized in that there are 10 gap 17 lower edge of exumbrella 4, handgrip 18 is equipped with in the inboard, lower edge of interior umbrella 5; Handgrip 18 is stuck in the gap, and interior exumbrella just is integral and rotates; As handgrip is deviate from from gap, just interior umbrella and exumbrella can relatively rotate.

4, as claim 1 and 2 described division machines, it is characterized in that all having angle 6 and 7 symmetrically on the inclined-plane of exumbrella and interior umbrella, the total area of angle respectively accounts for 1/2 of its umbrella inclined-plane.

5, as claim 3 and 4 described division machines, it is characterized in that handgrip is deviate from from gap, make exumbrella and interior umbrella relatively rotate different angle X and cut the sample mouth, to draw different divisions than A, X=90 ° of-180 ° of A to regulate.

6, division machine as claimed in claim 1 is characterized in that umbrella hat is the umbrella shape ducted body with two kinds of gradients, and top gradient and plane are 75 ° of angles, and bottom gradient and plane are 45 °～60 ° angles.

7, division machine as claimed in claim 1 is characterized in that having under the branch sample umbrella a right handed drawer that is driven by outer sleeve 15 to take turns 12, is divided into 12 compartments with blade on the wheel; Can put into 1 drawer bucket 13 in each compartment, regulate the ratio of division for the second time with the drawer bucket number of putting into.