CN220322521U

CN220322521U - Pulverized coal weighing device

Info

Publication number: CN220322521U
Application number: CN202322028707.0U
Authority: CN
Inventors: 韩雪峰; 展飞; 高丽丽
Original assignee: Youluoka Shandong Mining Industry Technology Co ltd
Current assignee: Youluoka Shandong Mining Industry Technology Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-01-09
Anticipated expiration: 2033-07-31

Abstract

The utility model discloses a pulverized coal weighing device, which relates to the technical field of instruments for coal mines and comprises a weighing device and a weighing barrel for placing pulverized coal to be weighed, wherein a plurality of filter barrels are arranged in the weighing barrel, each filter barrel comprises a first filter barrel, a plurality of first filter holes are formed in the first filter barrel, and the first filter barrels are detachably connected in the weighing barrel; the second filter vat is provided with a plurality of second filtration pores, and the second filter vat can be dismantled and connect in weighing barrel, and first filter vat is located the top of second filter vat, and the aperture of first filtration pore is greater than the aperture of second filtration pore. According to the pulverized coal weighing device, the weight of pulverized coal in a unit volume of a borehole is measured, the weight of pulverized coal with different particle sizes is measured, the weight distribution of the pulverized coal with different particle sizes can be further known, and the quantitative determination of the surrounding rock grade and the accurate determination of the corresponding coal body stress state are facilitated through the parameters.

Description

Pulverized coal weighing device

Technical Field

The utility model relates to the technical field of instruments for coal mines, in particular to a pulverized coal weighing device.

Background

The rock burst monitoring method has a plurality of methods, and the drilling cutting method is used as a simple and reliable rock burst monitoring means, has important roles in rock burst prediction, pressure relief effect inspection and the like, and is valued by engineering technicians. Fourteen and five times, the construction of intelligent mines is an important direction of development of each mine, but the drilling cuttings method is used as a main means for rock burst monitoring, the traditional modes of artificial drilling cuttings, weighing and recording are continued all the time, and the requirements of intelligent development of the mines are not met.

Drilling cutting method: a method for identifying the impact danger by constructing drilling holes in a coal seam according to the amount of coal dust discharged per meter, the change rule of the coal dust and the related dynamic phenomenon in the drilling process.

The principle of the drilling cutting method is to determine the corresponding coal stress state by measuring the amount of coal dust in the drilling hole. If the drilling of the coal seam is regarded as the digging of a micro roadway in the impact dangerous area, the coal seam drilling process is just like the rock burst simulation test with reduced scale.

The critical indexes of the drilling cutting method generally comprise drilling cutting quantity indexes, drilling cutting granularity indexes, dynamic phenomena and the like, and all the critical indexes of the drilling cutting method reflect the peak value and the concentration degree of the stress of the coal body. In areas with high impact risk, multiple indexes are often simultaneously generated, so comprehensive analysis and judgment are needed.

The traditional construction method comprises the following steps:

(1) and (3) connecting a drilling machine: the 42mm drill bit passes through the coal dust collector and hangs the coal dust collecting barrel under the coal dust collector.

(2) And (5) two persons centralize the drilling machine and the drilling rod, insert the rod sleeve of the alignment drilling machine, and confirm that the rod connecting pin is reliably connected with the rod sleeve hole.

(3) Holding a right handle of the drilling machine, rotating the drilling machine clockwise, stopping pushing after pushing the drill rod 1 section (1 m) at a constant speed, keeping the drilling machine to normally operate, stopping drilling after stopping coal dust injection for 5 seconds by visual inspection of an orifice.

The pulverized coal was weighed. The volume of the pulverized coal is weighed by a container or the mass of the pulverized coal is weighed by a spring balance, and data and dynamic effects in the detection process are recorded on a recording table. And pouring the pulverized coal into a preassigned container after weighing, so as to clean and transport the pulverized coal.

(5) And (3) re-connecting the pulverized coal accommodating barrel under the pulverized coal collector, and starting the drilling detection of the nth section of drill rod (sequentially operating the steps until the construction of the 14 th section of drill rod is finished).

The existing products are not enough:

the existing weighing device cannot refine the particle size of the pulverized coal, so that more accurate drilling cuttings analysis cannot be performed.

At present, coal mine drill cuttings are constructed, most of coal dust is placed in gunny bags for weighing, the gunny bags are poor in quality and are not durable, the coal mine drill cuttings are required to be replaced at regular time, and a plurality of labor costs are increased.

Therefore, how to provide a pulverized coal weighing device to accurately weigh pulverized coal with different particle diameters is a technical problem that needs to be solved currently by those skilled in the art.

Disclosure of Invention

The utility model aims to provide a pulverized coal weighing device for accurately weighing pulverized coal with different particle diameters.

In order to achieve the above object, the present utility model provides a pulverized coal weighing device, including a weighing device and a weighing barrel for placing pulverized coal to be weighed, wherein a plurality of filter barrels are arranged in the weighing barrel, and the filter barrels include: the first filter vat is provided with a plurality of first filter holes and is detachably connected in the weighing barrel; the second filter vat, be provided with a plurality of second filtration holes on the second filter vat, the second filter vat can dismantle connect in the bucket of weighing, just first filter vat is located the top of second filter vat, the aperture of first filtration hole is greater than the aperture of second filtration hole.

Preferably, the inner wall of the weighing barrel is provided with a first annular limiting block and a second annular limiting block, a first annular edge wing is arranged at the opening edge of the first filtering barrel, a second annular edge wing is arranged at the opening edge of the second filtering barrel, the outer diameter of the second annular edge wing is smaller than the aperture of the first annular limiting block, the first annular edge wing is attached to the upper end of the first annular limiting block, and the second annular edge wing is attached to the upper end of the second annular limiting block.

Preferably, the first filter vat and the second filter vat are both provided with vibrators, and the vibrators are electrically connected with the control switch.

Preferably, the outer wall of the weighing barrel is provided with a first handle, the first filter barrel is provided with a second handle, and the second filter barrel is provided with a third handle.

Preferably, the weighing tub, the first filter tub and the second filter tub are all made of stainless steel.

Preferably, the first filter vat and the second filter vat are all stamped integral pieces.

Preferably, the weighing machine is a horizontal meter or a hand-held meter.

Preferably, a clamping groove is formed in the upper end of the horizontal meter, and the weighing barrel is placed in the clamping groove.

Compared with the background art, the coal dust weighing device provided by the utility model has the advantages that the weighing barrel is placed on the weighing device, the coal dust from the drill cuttings is poured on the first filter barrel, the first filter hole is formed in the bottom of the first filter barrel, the coal dust with the particle size smaller than the aperture of the first filter hole falls on the second filter barrel through the first filter hole, the second filter hole is formed in the second filter barrel, the coal dust with the particle size smaller than the aperture of the second filter hole falls on the bottom of the weighing barrel through the second filter hole, after all the drill cuttings coal dust is inverted, the numerical value of the weighing device is recorded as M, the first filter barrel is separated from the weighing barrel, the numerical value of the weighing device is recorded as N, and the coal dust with the particle size larger than the aperture of the first filter hole remains on the first filter barrel, so that the weight of the coal dust with the particle size larger than the aperture of the first filter hole falls on the bottom of the weighing barrel is M-N-first filter barrel; then the second filter vat is separated from the weighing vat, the numerical value of the weighing device is recorded as O, the weight of the coal dust with the grain diameter larger than the aperture of the second filter vat is N-O-the weight of the second filter vat, the weight of the coal dust with the grain diameter smaller than the aperture of the second filter vat is O-the weight of the weighing vat, further the weight of the coal dust in the unit volume of the drilling hole is measured, the weight ratio of the coal dust with different grain diameters is measured, and the quantitative determination of the surrounding rock grade and the accurate determination of the corresponding coal body stress state are facilitated through the parameters.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a weighing barrel and a horizontal meter according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the operation of a weighing barrel and a portable meter according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a weighing barrel according to an embodiment of the present utility model;

fig. 4 is a schematic diagram illustrating assembly of a weighing barrel and a filter cartridge according to an embodiment of the present utility model.

Wherein:

1-weighing barrel, 11-first annular limiting block, 12-second annular limiting block, 13 first handle, 2-first filter vat, 21-first filter hole, 22-first annular edge wing, 23-second handle, 3-second filter vat, 31-second filter hole, 32-second annular edge wing, 33-third handle, 4-horizontal meter, 41-draw-in groove, 5-portable meter.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

Referring to fig. 1-4, the pulverized coal weighing device provided by the application comprises a weighing device, a weighing barrel 1 for placing pulverized coal to be measured, a first filter barrel 2 and a second filter barrel 3 which are positioned in the weighing barrel 1, wherein a plurality of first filter holes 21 are formed in the first filter barrel 2, and the first filter barrel 2 is detachably connected in the weighing barrel 1; be provided with a plurality of second filtration pores 31 on the second filter vat 3, second filter vat 3 can dismantle and connect in weighing barrel 1, and first filter vat 2 is located the top of second filter vat 3, leaves the clearance between second filter vat 3 and the weighing barrel 1 bottom, and the aperture of first filtration pore 21 is greater than the aperture of second filtration pore 31.

When the pulverized coal weighing device is applied, the first filter vat 2 and the second filter vat 3 are firstly arranged in the weighing vat 1, the first filter vat 2 is arranged above the second filter vat 3, the weighing vat 1 is arranged on the weighing device, the pulverized coal from drill cuttings is then poured on the first filter vat 2, as the bottom of the first filter vat 2 is provided with the first filter hole 21, the pulverized coal with the grain size smaller than that of the first filter hole 21 falls onto the second filter vat 3 through the first filter hole 21, as the second filter vat 3 is provided with the second filter hole 31, the pulverized coal with the grain size smaller than that of the second filter hole 31 falls onto the bottom of the weighing vat 1 through the second filter hole 31, after all the drill cuttings are completely inverted, the numerical value of the weighing device is recorded as M, the first filter vat 2 is separated from the weighing vat 1 at the moment, and the numerical value of the weighing device is recorded as N, as the pulverized coal with the grain size larger than that of the first filter vat 21 is stored on the first filter vat 2, and the pulverized coal with the grain size larger than that of the first filter vat 21 falls onto the second filter vat 3, and the pulverized coal with the grain size smaller than that of the first filter vat 21 is recorded as M-N weight of the first pulverized coal with the grain size of the first filter vat; then the second filter vat 3 is separated from the weighing vat 1, the numerical value of the weighing device is recorded as O, the weight of the coal dust with the grain diameter larger than the aperture of the second filter vat 31 is N-O-the weight of the second filter vat 3, the weight of the coal dust with the grain diameter smaller than the aperture of the second filter vat 31 is the weight of the O-weighing vat 1, the weight of the coal dust in the drilling hole with unit volume is measured, the weight of the coal dust with different grain diameters is measured, the weight ratio of the coal dust with different grain diameters is further known, and the determination of the surrounding rock grade quantization and the accurate determination of the corresponding coal body stress state are facilitated through the parameters.

On the basis of the embodiment, the inner wall of the weighing barrel 1 is fixedly provided with the first annular limiting block 11 and the second annular limiting block 12, through holes are formed in the middle of the first annular limiting block 11 and the middle of the second annular limiting block 12, the aperture of the second annular limiting block 12 is smaller than that of the first annular limiting block 11, the first annular side wing 22 is arranged at the opening edge of the first filter barrel 2, the second annular side wing 32 is arranged at the opening edge of the second filter barrel 3, the second filter barrel 3 is firstly placed on the second annular limiting block 12, namely, the second annular side wing 32 of the second filter barrel 3 is attached to the second annular limiting block 12, so that the outer diameter of the second annular side wing 32 is larger than that of the second annular limiting block 12, then the first filter barrel 2 is placed on the first annular limiting block 11, namely, the outer diameter of the first annular side wing 22 of the first filter barrel 2 is attached to the first annular limiting block 11, and the outer diameter of the first annular side wing 22 is larger than that of the first annular limiting block 11, and the outer diameter of the second annular side wing 32 is smaller than that of the first annular limiting block 11 is required to pass through the first annular limiting block 11.

The purpose of this arrangement is to achieve a detachable connection of the first filter vat 2 and the second filter vat 3 with the weighing vat 1, i.e. to facilitate the taking and placing of the first filter vat 2 and the second filter vat 3 in the weighing vat 1.

The number and the pore diameter of the first filter holes 21 and the second filter holes 31 are not limited based on the above embodiment, and may be adjusted according to actual working requirements.

On the basis of the embodiment, be equipped with a plurality of filter vat in the bucket 1 of weighing, this application annular stopper in the bucket 1 of weighing and the actual quantity of filter vat can be according to the work demand and decide, for example still can be provided with third annular stopper and fourth annular stopper in the bucket 1 of weighing, and then correspond in the bucket 1 of weighing and can place third filter vat and fourth filter vat, and guarantee that the aperture that is located the annular stopper of bucket 1 bottom of weighing is minimum, place on the annular stopper of bucket 1 bottom of weighing in the filter vat of bucket 1 bottom of weighing.

On the basis of the embodiment, the first filter vat 2 and the second filter vat 3 are respectively provided with a vibrator, and the vibrators are externally connected with a control switch.

That is, through the setting of vibrator on this application first filter vat 2 and second filter vat 3, when the buggy that the drill cuttings come out is placed in on the first filter vat 2, the control switch control vibrator work, makes the buggy that the particle diameter is less than first filtration pore 21 aperture drop to on the second filter vat 3 through first filtration pore 21, makes the buggy that the particle diameter is less than second filtration pore 31 aperture drop to the bottom of weighing bucket 1 through second filtration pore 31, realizes the accurate measurement of different particle diameter buggy.

On the basis of the embodiment, the outer wall of the weighing barrel 1 is provided with a first handle 13, the first filter barrel 2 is provided with a second handle 23, and the second filter barrel 3 is provided with a third handle 33

That is, by the arrangement of the first handle 13 of the present application, the weighing barrel 1 is convenient to be placed on the weighing machine, the first filter barrel 2 and the second filter barrel 3 are convenient to be taken and placed in the weighing barrel 1 by the arrangement of the second handle 23 and the third handle 33,

on the basis of the embodiment, the weighing barrel 1, the first filter barrel 2 and the second filter barrel 3 are all made of stainless steel, specifically, the weighing barrel 1 is formed by welding thickened 304 stainless steel plates, and the first filter barrel 2 and the second filter barrel 3 are integrally formed by stamping 304 stainless steel plates.

That is, the use of stainless steel further ensures the firmness and durability, and the service life of the pulverized coal weighing device is prolonged.

Based on the above embodiment, the weighing device is a horizontal meter 4 or a portable meter 5; the upper end of the horizontal meter 4 is provided with a clamping groove 41, and the weighing barrel 1 is placed in the clamping groove 41 to prevent the weighing barrel 1 from moving on the horizontal meter 4 to cause measurement errors.

Specifically, the horizontal meter 4 and the portable meter 5 are both used directly in the prior art, and the horizontal meter 4 is used directly in the existing products of the company, and reference is made to chinese patent CN202221100709.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The principles and embodiments of a pulverized coal weighing device provided by the present utility model are described herein by applying specific examples, and the above examples are only used to help understand the method and core ideas of the present utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides a buggy weighing device, its characterized in that, including weighing ware and be used for placing the bucket (1) of weighing of waiting to weigh buggy, be equipped with a plurality of filter vat in bucket (1) of weighing, the filter vat includes:

the first filter vat (2), a plurality of first filter holes (21) are formed in the first filter vat (2), and the first filter vat (2) is detachably connected in the weighing vat (1);

the second filter vat (3), be provided with a plurality of second filtration pore (31) on second filter vat (3), second filter vat (3) can dismantle connect in weighing vat (1), just first filter vat (2) are located the top of second filter vat (3), the aperture of first filtration pore (21) is greater than the aperture of second filtration pore (31).

2. The pulverized coal weighing device according to claim 1, characterized in that a first annular limiting block (11) and a second annular limiting block (12) are arranged on the inner wall of the weighing barrel (1), a first annular side wing (22) is arranged at the opening edge of the first filtering barrel (2), a second annular side wing (32) is arranged at the opening edge of the second filtering barrel (3), the outer diameter of the second annular side wing (32) is smaller than the aperture of the first annular limiting block (11), the first annular side wing (22) is attached to the upper end of the first annular limiting block (11), and the second annular side wing (32) is attached to the upper end of the second annular limiting block (12).

3. The pulverized coal weighing device according to claim 2, characterized in that the first filter vat (2) and the second filter vat (3) are provided with vibrators, which are electrically connected with a control switch.

4. The pulverized coal weighing device according to claim 1, characterized in that a first handle (13) is arranged on the outer wall of the weighing barrel (1), a second handle (23) is arranged on the first filter barrel (2), and a third handle (33) is arranged on the second filter barrel (3).

5. The pulverized coal weighing device according to claim 1, characterized in that the weighing tub (1), the first filter tub (2) and the second filter tub (3) are all made of stainless steel.

6. The pulverized coal weighing device according to claim 1, characterized in that the first filter vat (2) and the second filter vat (3) are both stamped in one piece.

7. The pulverized coal weighing device according to claim 1, characterized in that the weighing machine is a horizontal meter (4) or a hand-held meter (5).

8. The pulverized coal weighing device according to claim 7, characterized in that a clamping groove (41) is arranged at the upper end of the horizontal meter (4), and the weighing barrel (1) is placed in the clamping groove (41).