CN212821063U

CN212821063U - Sandstone screening test integrated device

Info

Publication number: CN212821063U
Application number: CN202021705104.XU
Authority: CN
Inventors: 张飘阳; 朱兵见; 吴佳俊
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2020-08-15
Filing date: 2020-08-15
Publication date: 2021-03-30
Anticipated expiration: 2030-08-15

Abstract

The utility model belongs to the technical field of testing arrangement, a experimental integrated device of grit screening is related to, the novel nipple rectifier comprises an outer barrel, level in proper order in the urceolus has set up the coaxial sieve tray of multilayer, the sieve mesh aperture of sieve tray reduces from top to bottom in proper order, and the below of every sieve tray all is provided with the inductor of spring and detection mass, still be provided with the electromagnetic shaker that makes the sieve tray take place vibrations on the device. The utility model provides a grit screening test integrated device has reduced experiment preparation time and test time, has improved experimental accuracy.

Description

Sandstone screening test integrated device

Technical Field

The utility model belongs to the technical field of testing arrangement, a experimental integrated device of grit screening is related to.

Background

The strength of concrete is an important index for judging construction quality, the most direct influence on the strength of concrete is the quality grade of sand adopted by the concrete, and the strength of concrete made of building sand with different quality grades is different; meanwhile, the required strength of concrete is different according to different building requirements, so that the quality grade of the sand for concrete is very necessary to detect during construction.

The existing detection mode is as follows: the fineness modulus of the sand is calculated by testing the grain composition of the sand, and the thickness degree of the sand is evaluated. The grain grading of the sand refers to the matching proportion of sand grains with different grain sizes. Good grading means that the gaps of coarse particles are just filled by medium particles, the gaps of the medium particles are just filled by fine particles, and the sand is filled step by step to form the densest packing state, the porosity reaches the minimum value, and the packing density reaches the maximum value. Thus, the aims of saving cement and improving the comprehensive performance of concrete can be achieved. The specific experimental steps are as follows:

(1) the sample is accurately weighed to 500g to 1 g.

(2) And stacking the standard sieves in the order of increasing the aperture, adding a bottom tray, pouring the weighed sample into the uppermost 4.75mm sieve, covering, placing on a sieve shaker, and shaking for about 10 min.

(3) And taking down the sleeve screen from the screen shaker, and screening by hand one by one according to the size sequence of the screen holes until the throughput per minute is less than 0.1 percent of the total amount of the samples. The passed granules were incorporated into the next sieve and sieved together with the sample in the next sieve in this order until all sieves were screened.

(4) Weighing the screen allowance on each screen, wherein the screen allowance of the sample on each screen is not more than 200g, otherwise, dividing the screen allowance sample into two parts, then screening, and taking the screen allowance twice.

The method has the defects that the test steps are complicated, and tools are complicated, so that the development of a simpler device for carrying out the sand screening test becomes a technical problem which needs to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a grit screening test integrated device, reduced experiment preparation time and test time, improved experimental accuracy.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a grit screening test integrated device, includes the urceolus, level in proper order is provided with the coaxial sieve tray of multilayer in the urceolus, the sieve mesh aperture of sieve tray reduces from top to bottom in proper order, and the below of every sieve tray all is provided with spring and detection quality's inductor, still be provided with the electromagnetic shaker that makes the sieve tray take place to shake on the device.

The sensor is a weighing sensor known in the art, and a pressure sensor, a resistance sensor, or the like may be used.

The outer barrel is a split outer barrel and is formed by stacking a plurality of sections of outer barrel in a split mode, each outer barrel split corresponds to one screen disc, and the outer barrel split bodies are detachably fixed through buckles.

In the split type outer barrel, a cover plate is arranged at the upper end of the outer barrel split body at the uppermost layer, the lower end of the outer barrel split body at the lowermost layer is provided with an opening, the upper end of the outer barrel split body at the lowermost layer is provided with an opening, and the upper end and the lower end of the outer barrel split body at the middle layer are both provided with openings; the vibrator is arranged at the bottom of the split outer barrel of the lowermost layer, and vibrates the outer barrel and drives the sieve tray to vibrate.

And a gauze is connected between the upper end of the sieve tray and the outer barrel and seals a gap between the sieve tray and the inner wall of the outer barrel.

The springs and the inductors are arranged in a plurality of positions, are uniformly distributed at the bottom of the sieve tray, and the sum of the quality tested by the inductors is the sand quality in the sieve tray. The number of the springs and the inductors is preferably four, and the inductors are arranged at the corresponding positions of the springs.

The lower end of the spring is connected to the inner wall of the outer cylinder through a support.

The inductor is electrically connected with the display screen through the transmission line, the display screen displays the sand and stone quality and the proportion of the sand and stone in each sieve tray detected by the inductor, and the display screen is electrically connected with the power supply and is installed on the outer side of the outer barrel through the installation assembly.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses a granule gradation of integrated device survey grit, only need during the use to place the grit can accomplish the detection automatically on the sieve tray of the superiors. Therefore, the preparation time and the test time of the experiment are reduced, and the accuracy of the experiment is improved.

2. The utility model discloses an urceolus adopts split type, can dismantle the connection through the buckle, and the experiment finishes can carrying out convenient dismantlement, and the grit that the clearance detected finishing.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is another schematic cross-sectional view of the present invention;

reference numerals: 1. an outer cylinder; 2. a sieve tray; 3. a spring; 4. an inductor; 5. a vibrator; 6. buckling; 7. a cover plate; 8. a base plate; 9. gauze; 10. supporting; 11. a transmission line; 12. a display screen.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 3:

the utility model provides a grit screening test integrated device, includes urceolus 1, level in proper order has the coaxial sieve tray 2 of multilayer in the urceolus 1, the mesh aperture of sieve tray 2 reduces from top to bottom in proper order, and the below of every sieve tray 2 all is provided with spring 3 and detection quality's inductor 4, still be provided with the electromagnetic shaker 5 that makes sieve tray 2 take place vibrations on the device.

The sensor 4 is a weighing sensor known in the art, and may be a pressure sensor, a resistance sensor, or the like.

The utility model discloses an urceolus adopts detachable structure, specifically does: the outer barrel 1 is a split outer barrel and is formed by stacking a plurality of sections of outer barrel in a split mode, each outer barrel in a split mode corresponds to one screen disc 2, and the outer barrel in the split mode is detachably fixed through the buckles 6.

Further, in the split outer barrel, a cover plate 7 is arranged at the upper end of the uppermost outer barrel split body, the lower end of the uppermost outer barrel split body is provided with an opening, a bottom plate 8 is arranged at the lower end of the lowermost outer barrel split body, the upper end of the lowermost outer barrel split body is provided with an opening, and the upper end and the lower end of the middle outer barrel split body are both provided with openings; the vibrator 5 is arranged at the bottom of the outer cylinder split body of the lowest layer, and the vibrator 5 vibrates the outer cylinder 1 and drives the sieve tray 2 to vibrate.

Be connected with gauze 7 between the upper end of above-mentioned sieve tray 2 and urceolus 1, gauze 7 seals the clearance between sieve tray 2 and the 1 inner wall of urceolus, and the obstructed sieve hole of grit directly falls into lower floor's sieve tray 2 when avoiding vibrations.

The springs 3 and the inductors 4 are arranged in a plurality and are uniformly distributed at the bottom of the sieve tray 2, and the sum of the quality tested by the inductors 4 is the quality of sand and stone in the sieve tray 2. The number of the springs 3 and the inductors 4 is preferably four, and the inductors 4 are installed at corresponding positions of the springs 3.

The lower end of the spring 3 is connected to the inner wall of the outer cylinder 1 through a support bracket 10.

The sensor 4 is electrically connected with the display screen 12 through the data line 11, the display screen 12 displays the sand quality and the proportion of the sand in each screen disc 2 detected by the sensor 4, and the display screen 12 is electrically connected with the power supply and is arranged on the outer side of the outer barrel 1 through the mounting component.

The utility model discloses a test process is:

turning on a switch-reset button on the display screen 12, accurately weighing 500g of the sample, pouring the weighed sample into the uppermost layer of the sieve tray 2, covering the sieve tray 7, and then automatically shaking for about 10 min. After 10min, the device can automatically calculate, and the mass and the occupied proportion of the sandstone on each sieve tray 2 can be read from the display screen 12 after the calculation is finished. Specifically, the shaker 5 shakes the sieve tray 2 to disperse sand into each sieve tray 2, the sum of the masses sensed by the sensor 4 is equal to the mass of sand on the sieve tray 2, the transmission line 11 of the sensor 4 is connected with an external display screen 12, and data can be displayed on the display screen 12. After the test is finished, the outer cylinder 1 can be disassembled to pour out the sandstone. Furthermore, the device has a data export function, and data can be printed out if necessary.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a grit screening test integrated device, its characterized in that, includes urceolus (1), level in proper order has multilayer coaxial sieve dish (2) in urceolus (1), the mesh aperture of sieve dish (2) reduces from top to bottom in proper order, and the below of every sieve dish (2) all is provided with spring (3) and detection quality's inductor (4), still be provided with electromagnetic shaker (5) that make sieve dish (2) take place vibrations on the device.

2. The sand and stone screening test integrated device according to claim 1, wherein the outer cylinder (1) is a split outer cylinder and is formed by stacking a plurality of segments of outer cylinder split bodies, each outer cylinder split body corresponds to one screen disc (2), and the outer cylinder split bodies are detachably fixed through buckles (6).

3. A sand and stone screening test integration device according to claim 2, characterized in that the uppermost outer cylinder split is provided with a cover plate (7), the lowermost outer cylinder split is provided with a bottom plate (8), and the vibrator (5) is arranged at the bottom of the lowermost outer cylinder split.

4. A sand and stone screening test integrated device according to claim 1, characterized in that a gauze (9) is connected between the upper end of the screen plate (2) and the outer cylinder (1).

5. A sand and stone screening test integrated device according to claim 1, characterized in that, a plurality of springs (3) and inductors (4) are provided and evenly distributed at the bottom of the screen tray (2).

6. A sand and stone screening test integrated device according to claim 1, characterized in that the lower end of the spring (3) is connected to the inner wall of the outer cylinder (1) through a support bracket (10).

7. A sand and stone screening test integrated device according to claim 1, characterized in that, the inductor (4) is electrically connected with a display screen (12) through a transmission line (11), and the display screen (12) displays the sand and stone quality and the proportion in each screen tray (2) detected by the inductor (4).