CN210386568U

CN210386568U - Test device for rapidly sorting needle flaky particles

Info

Publication number: CN210386568U
Application number: CN201921008296.6U
Authority: CN
Inventors: 许娜; 吴为健; 吴红; 于明明; 向世豪; 郭黎静
Original assignee: Gezhouba Group Testing and Inspection Co Ltd
Current assignee: Gezhouba Group Testing and Inspection Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-04-24
Anticipated expiration: 2029-07-01

Abstract

A test device for rapidly sorting needle flaky particles comprises a plurality of groups of sieves, wherein each group of sieves comprises a material tray, a flaky collecting box and a needle-shaped collecting box are respectively fixed on the left and the right of the lower end of the material tray, and the needle-shaped collecting boxes are connected with the material tray through needle-shaped separating sieves which are inclined downwards; the material tray and the needle-shaped separation sieve are separated by an upright column of the needle-shaped gauge; the material tray is provided with sheet-shaped sieve pores; the needle-shaped separation sieve is provided with elliptical holes. The utility model provides a pair of test device of quick sorting needle slice granule can improve needle slice standard efficiency of software testing.

Description

Test device for rapidly sorting needle flaky particles

Technical Field

The utility model relates to a test device of needle slice granule is selected separately fast relates to the needle slice granule content test of coarse aggregate for construction fields such as building, highway, water conservancy, water and electricity.

Background

The content of acicular particles (acicular particles refer to particles with the length being 2.4 times larger than the average particle diameter of the acicular particles, and flaky particles refer to particles with the thickness being 0.4 times smaller than the average particle diameter) is an important parameter for evaluating the quality of the aggregate, and is also one of important factors influencing the performance of concrete, so the parameter needs to be detected frequently to evaluate whether the quality of the aggregate meets the quality requirement. In various national standards and industrial standards, the needle sheet test method only comprises a gauge method and a vernier caliper method, which are very low in efficiency, for example, the needle sheet gauge can only measure one aggregate at a time, the working efficiency is extremely low, the vernier caliper method is more serious, the length, the width and the height of a single aggregate are required to be measured, and the shape of the aggregate is determined according to the length-width ratio, so that time and labor are wasted. Particularly, the aggregate with small particle size needs to be measured more, and the test time is longer.

Disclosure of Invention

The utility model aims to solve the technical problem that a test device of needle slice granule is selected separately fast is provided, can improve work efficiency greatly, and the save time cost reduces intensity of labour

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a test device for rapidly sorting needle flaky particles comprises a plurality of groups of sieves, wherein each group of sieves comprises a material tray, a flaky collecting box and a needle-shaped collecting box are respectively fixed on the left and the right of the lower end of the material tray, and the needle-shaped collecting boxes are connected with the material tray through needle-shaped separating sieves which are inclined downwards; the material tray and the needle-shaped separation sieve are separated by an upright column of the needle-shaped gauge; the material tray is provided with sheet-shaped sieve pores; the needle-shaped separation sieve is provided with elliptical holes.

The multiple groups of sieves comprise a primary sieve, a secondary sieve, a tertiary sieve, a quaternary sieve, a quinary sieve and a quinary sieve; six sets of screeners correspond to the coarse aggregates of six aggregate size fractions, respectively.

The utility model relates to a test device of quick sorting needle slice granule has following technological effect: the screening device is provided with the densely distributed sheet holes, the needle-shaped stand columns and the like, so that the device can simultaneously carry out needle sheet gauge test on a plurality of aggregates, and meanwhile, the effect of gravity sliding is utilized to realize automatic screening, and finally, the purpose of separating the aggregate needle sheet particles in a labor-saving and time-saving manner is achieved.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic structural diagram of the present invention.

In the figure: the screening device comprises a screening device 1, a material tray 2, a sheet collecting box 3, a needle-shaped collecting box 4, a needle-shaped separating screen 5, a stand column 6, a sheet screen hole 7 and an elliptical hole 8.

Detailed Description

According to the standard requirements of the Hydraulic concrete sandstone aggregate test procedure (DL/T5151-2014), the aggregate particle size is divided into six grades, namely (5-10) mm, (10-16) mm, (16-20) mm, (20-25) mm, (25-31.5) mm and (31.5-40) mm.

Six sieves 1 have been designed in this application, are one-level sieve, second grade sieve, tertiary sieve, level four sieve, five grades of sieves, six grades of sieves respectively, and six sieves 1 correspond above-mentioned six aggregate respectively.

Each group of the screeners is made of stainless steel plates with the thickness of 1-2mm and is divided into three parts which are welded together. The screening device 1 comprises a material tray 2, a sheet collecting box 3 and a needle-shaped collecting box 4 are respectively fixed on the left and the right of the lower end of the material tray 2, wherein the needle-shaped collecting box 4 is connected with the material tray 2 through a needle-shaped separating screen 5 which is inclined downwards; the material tray 2 and the needle-shaped separation sieve 5 are separated by an upright post 6 of the needle-shaped gauge; the material tray 2 is provided with a sheet-shaped sieve pore 7; the needle-shaped separation screen 5 is provided with elliptical holes 14.

The needle-shaped separating screen 5 is obliquely arranged, so that the needle-shaped separating screen can automatically screen through gravity sliding.

The gauge dimensions of the needle plate corresponding to the size fraction are detailed in table 1.

The corresponding dimensions in the present application are listed above:

in the primary sifter here: the spacing of the columns 6 of the needle gauge is: 18.0mm, the hole width of the sheet-shaped sieve hole 7 is: 3.0mm, the size of the elliptical hole 8 is 18.0 mm;

in the secondary screening device: the spacing of the columns 6 of the needle gauge is: 31.2mm, the hole width of the sheet-shaped sieve hole 7 is: 5.2mm, the size of the elliptical hole 8 is 31.2 mm;

in the tertiary sieving ware: the spacing of the columns 6 of the needle gauge is: 43.2mm, the hole width of the sheet-shaped sieve hole 7 is: 7.2mm, and the size of the elliptical hole 8 is 43.2 mm;

in the four-stage screening device: the spacing of the columns 6 of the needle gauge is: 54.0mm, the hole width of the sheet-shaped sieve hole 7 is: 9.0mm, the size of the elliptical hole 8 is 54.0 mm;

in the five-stage screening device: the spacing of the columns 6 of the needle gauge is: 67.8mm, the hole width of the sheet-shaped sieve opening 7 is: 11.3mm, the size of the elliptical hole 8 is 67.8 mm;

in the six-stage screener: the spacing of the columns 6 of the needle gauge is: 85.8mm, the hole width of the sheet-shaped sieve hole 7 is: 14.3mm, the size of the elliptical hole 8 is 85.8 mm;

the intervals of the upright columns 6 in the screeners corresponding to the aggregates of each grade are the same, the sizes of the flaky sieve holes 7 are the same, and the sizes of the elliptic holes 8 are the same.

The needle-shaped gauge can only evaluate single-particle aggregates, so when the test is carried out, firstly, a common sieve is selected to separate the aggregates according to the standard. In the test, the aggregate is firstly screened into corresponding size fractions, and then needle-shaped particle screening is carried out. Therefore, the aggregate in each collection box after screening has different particle shapes and is divided into normal particles, needle-shaped particles or sheet-shaped particles regardless of the size of the needle-shaped or sheet-shaped aggregate or the size of the particle grade corresponding to the screening of the aggregate.

For example, if the size of a certain aggregate is (5-20) mm, the aggregate is sieved by sieves with the hole sizes of 5mm, 10mm, 16mm and 20mm during the test, and the aggregate is sieved step by step from a small-mesh sieve to a large-mesh sieve during the selection process. The aggregate with the size of 5mm is firstly screened out, the aggregate with the size of 10mm is then screened out, the aggregate with the size of 5-10 mm is screened out, the aggregate with the size of 16mm is secondly screened out, and finally the aggregate with the size of 16-20 mm is screened out by the sieve with the size of 20 mm.

After screening, the aggregates with different particle sizes are taken for subpackage, and then the needle-shaped particles of each particle size are respectively selected by utilizing six groups of screeners 1.

For example, aggregate (5-10) mm is sieved by a primary sieving machine (the interval of the upright columns 6 of the needle gauge is 18.0mm, the hole width of the sheet-shaped sieve holes 7 is 3.0mm, and the size of the elliptical holes 8 is 18.0 mm). In the screening process, when a tester dials the aggregates to the upright post 6, the flaky aggregates fall into the flaky collecting box 3; some needle-shaped aggregates can be blocked, other normal aggregates and some needle-shaped aggregates can pass through the needle-shaped separating screen 5 through the upright column, normal aggregate particles fall to the ground after passing through the needle-shaped separating screen 5, and some needle-shaped aggregates cannot pass through and finally fall into the needle-shaped collecting box. Finally, the flake aggregate is in the flake collecting box 3, the needle aggregate is in the charging tray 2 and the needle collecting box 4, and the normal aggregate is on the ground under the sieving device 1.

Claims

1. The utility model provides a test device of quick sorting needle slice granule which characterized in that: the screening device comprises a plurality of groups of screening devices (1), wherein each group of screening devices (1) comprises a material tray (2), a sheet collecting box (3) and a needle-shaped collecting box (4) are respectively fixed on the left and right sides of the lower end of the material tray (2), and the needle-shaped collecting boxes (4) are connected with the material tray (2) through needle-shaped separating screens (5) which incline downwards; the material tray (2) and the needle-shaped separation sieve (5) are separated by an upright post (6) of the needle-shaped gauge; the material tray (2) is provided with a sheet-shaped sieve pore (7); the needle-shaped separating screen (5) is provided with elliptical holes (8).

2. The testing device for rapidly sorting needle-shaped flaky particles according to claim 1, characterized in that: the multiple groups of screeners (1) comprise a primary screener, a secondary screener, a tertiary screener, a quaternary screener, a five-stage screener and a six-stage screener; six sets of the screeners (1) respectively correspond to the coarse aggregates of six aggregate size fractions.