Dust removal device for compressed air drilling

Abstract

The utility model provides a dust removal device for compressed air drilling, and relates to the technical field of dust removal, the dust removal device comprises a dust blocking cover, a fixing assembly for fixing the dust blocking cover on a drilled wall is arranged at an opening of the dust blocking cover, a dust removal pipeline is connected to the lower part of the dust blocking cover, and a spraying assembly for spraying water into the dust removal pipeline is arranged on the dust removal pipeline; dust diffusion is limited through the dust blocking cover, dust-containing gas in the dust blocking cover is led out through the dust removal pipeline, water spraying and dust falling are conducted on the dust removal pipeline in combination with the spraying assembly, and the dust concentration of a working place is remarkably reduced; the influence of dust on the sight line of an operator is reduced, the misoperation risk caused by sight line blocking is reduced, and the safety of the working process and the body health of the operator are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal, in particular to a dust removal device for compressed air drilling. BACKGROUND

[0002] Compressed air drilling is a commonly used technical method in coal mine underground wall drilling operation, which uses compressed air as a power source, and delivers compressed air to the bottom of the drill hole through the channel inside the drill rod. Compressed air forms a high-pressure air flow at the bottom of the drill hole, which blows up the drill cuttings and discharges them outward along the annular space between the drill rod and the drill hole wall, and finally discharges them to the outside of the drill hole.

[0003] However, compressed air drilling mainly relies on compressed air for discharge, resulting in a large amount of dust in the operation site. These dusts diffuse in the workplace, not only seriously affecting the operator's vision, making it difficult for them to clearly observe the equipment operation status and working environment, easily leading to misoperation and increasing the possibility of accidents, but also being inhaled by the operator, which can damage their respiratory system and seriously endanger their health. SUMMARY

[0004] The purpose of the present application is to provide a dust removal device for compressed air drilling, which can solve the technical problem that compressed air drilling causes dust to diffuse in the operation site, which not only seriously affects the operator's vision, increases the risk of misoperation and accidents, but also is inhaled by the operator, damaging their respiratory system and endangering their health.

[0005] The present application provides a dust removal device for compressed air drilling, which includes a dust blocking cover, a fixing assembly for fixing the dust blocking cover on the drill hole wall is arranged at the opening of the dust blocking cover, a dust removal pipeline is connected to the lower part of the dust blocking cover, a spraying assembly for spraying water into the dust removal pipeline is arranged on the dust removal pipeline, and a connecting assembly for the drill rod to pass through and work is arranged on the dust blocking cover.

[0006] Further, the spraying assembly includes a spraying sleeve and a high-pressure water pipe, an annular chamber is arranged on the spraying sleeve, the high-pressure water pipe communicates with the annular chamber, the spraying sleeve is fixedly sleeved on the dust removal pipeline, a plurality of spraying holes are uniformly arranged on the inner side of the spraying sleeve, the spraying holes extend into the dust removal pipeline, and an atomizing mesh is fixedly arranged in the spraying hole.

[0007] Further, the fixing assembly includes a connecting ring and a plurality of fixing nails, the connecting ring is fixedly arranged on the dust blocking cover, a plurality of fixing holes matched with the fixing nails are uniformly arranged on the connecting ring, and the fixing nails and the fixing holes one-to-one correspond.

[0008] Further, a gasket is fixedly arranged on the side of the connecting ring away from the dust blocking cover.

[0009] Further, the connecting assembly comprises a connecting cylinder and a sealing ring, the connecting cylinder is fixed on the dust cover and communicates with the dust cover, and the sealing ring is fixed in the connecting cylinder.

[0010] Further, the sealing ring is made of wear-resistant material.

[0011] Further, the inner wall of the dust cover is uniformly provided with a plurality of grooves.

[0012] The utility model discloses the beneficial effect:

[0013] The utility model discloses the dust diffusion is limited to dust cover, utilizes dust removal pipeline to lead out dust-containing gas in dust cover, and then combines spray assembly to spray water and reduce dust to dust removal pipeline, significantly reduces the dust concentration of workplace, reduces the influence of dust to the sight of operator, reduces the risk of misoperation caused by the sight obstruction, guarantees the safety of operation process and the health of operator. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0015] Figure 1 It is the structural schematic diagram in some embodiments of the present application;

[0016] Figure 2 It is the sectional view in some embodiments of the present application;

[0017] The reference signs are respectively:

[0018] 1, dust cover; 11, groove; 2, fixed assembly; 21, connecting ring; 22, fixed nail; 3, dust removal pipeline; 4, spray assembly; 41, spray sleeve; 411, annular chamber; 412, spray hole; 413, atomization screen; 42, high-pressure water pipe; 5, connecting assembly; 51, connecting cylinder; 52, sealing ring; 6, gasket. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantage of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application, and the technical scheme in the embodiments of the present application is clearly and completely described, obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0021] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. Specific embodiments:

[0026] As Figure 1 and Figure 2As shown, the application provides a dust removal device for compressed air drilling, which comprises a dust blocking cover 1, a fixing assembly 2 is arranged at the opening of the dust blocking cover 1 for fixing the dust blocking cover 1 on the drilling wall, a dust removal pipeline 3 is connected to the lower part of the dust blocking cover 1, a spraying assembly 4 is arranged on the dust removal pipeline 3 for spraying water into the dust removal pipeline 3, and a connecting assembly 5 is arranged on the dust blocking cover 1 for allowing the drill rod to pass through for operation. The dust blocking cover 1 is stably fixed on the drilling wall by the fixing assembly 2, so that the dust blocking cover 1 is stable during drilling. The dust blocking cover 1 surrounds the drilling to form a relatively closed space, so that the dust is limited in the space at the initial stage of diffusion, and the diffusion range is reduced. The dust removal pipeline 3 is connected to the lower part of the dust blocking cover 1 for leading out the dust-containing air in the dust blocking cover 1. The spraying assembly 4 sprays water into the pipeline, so that the water mist mixes with the dust-containing air. The dust is adsorbed and settled after being wetted, so that the air is purified. The connecting assembly 5 provides a basis for the normal operation of the drill rod. Through the cooperation of the dust blocking cover 1, the dust removal pipeline 3 and the spraying assembly 4, the dust concentration in the workplace is significantly reduced, the influence of dust on the operator's vision is reduced, the risk of misoperation caused by blocked vision is reduced, and the safety of the operation process and the health of the operator are ensured.

[0027] As shown in Figure 1 and Figure 2 , the spraying assembly 4 comprises a spraying sleeve 41 and a high-pressure water pipe 42. The spraying sleeve 41 is fixedly sleeved on the dust removal pipeline 3. The inside of the spraying sleeve 41 is uniformly provided with a plurality of spraying holes 412. The spraying holes 412 extend into the dust removal pipeline 3. An atomizing mesh 413 is fixedly arranged in the spraying hole 412. During dust removal, high-pressure water flows through the high-pressure water pipe 42 into the annular chamber 411. The water in the annular chamber 411 enters the dust removal pipeline 3 through the plurality of spraying holes 412. The hole channel of the spraying hole 412 constrains and accelerates the water flow to be sprayed out. When the water flow impacts the atomizing mesh 413, the water flow is divided and scattered into tiny water mist particles. The water mist particles contact and mix with the dust-containing air in the dust removal pipeline 3. The dust is wetted and adsorbed by the water mist, and settles from the air as its weight increases, achieving the purpose of purifying the air. The plurality of spraying holes 412 are uniformly distributed and cooperate with the atomizing mesh 413 to generate a large amount of fine water mist, which has a large contact area with the dust-containing air, greatly improving the adsorption efficiency of the dust and the water mist and enhancing the dust-settling effect, thereby more effectively reducing the dust concentration in the workplace and better protecting the health of the operator.

[0028] As shown in Figure 1 and Figure 2As shown, the fixing assembly 2 includes a connecting ring 21 and a plurality of fixing nails 22, the connecting ring 21 is fixedly arranged on the dust cover 1, a plurality of fixing holes adapted to the fixing nails 22 are uniformly arranged on the connecting ring 21, the fixing nails 22 correspond to the fixing holes one by one, during installation, the operator drives the fixing nails 22 into the drilled wall through the corresponding fixing holes, and the connecting ring 21 is firmly fixed on the wall, so that the dust cover 1 is stably installed at the drilled wall, and the installation is simple.

[0029] As shown in Figure 1 and Figure 2 , the connecting ring 21 is fixedly arranged with a gasket 6 on the side away from the dust cover 1, when the fixing nail 22 is driven into the drilled wall through the fixing hole on the connecting ring 21, the gasket 6 is clamped between the connecting ring 21 and the wall, and the gasket 6 is extruded from the connecting ring 21 and the wall as the fixing nail 22 is tightened, the gasket 6 is made of a material with certain elasticity and toughness (such as rubber), which will elastically deform when extruded, filling the small concave-convex unevenness between the connecting ring 21 and the wall surface, avoiding dust leakage from the gap between the connecting ring 21 and the wall, and better realizing the dust reduction and dust removal effect.

[0030] As shown in Figure 1 and Figure 2 , the connecting assembly 5 includes a connecting barrel 51 and a sealing ring 52, the connecting barrel 51 is fixedly arranged on the dust cover 1 and communicates with the dust cover 1, and the sealing ring 52 is fixedly arranged in the connecting barrel 51, the connecting barrel 51 provides a stable through channel for the drill rod, during drilling operation, the drill rod smoothly enters the inside of the dust cover 1 through the connecting barrel 51, and is connected with the drilling position, and the drilling operation is carried out, when the drill rod passes through the connecting barrel 51, the inner side of the sealing ring 52 closely abuts the outer wall of the drill rod, which can effectively fill the gap between the drill rod and the connecting barrel 51, and prevent dust from leaking into the working place through the gap between the drill rod and the connecting barrel 51.

[0031] As shown in Figure 2 , the sealing ring 52 is made of wear-resistant material, such as polyurethane rubber, fluorine rubber, etc., the application of wear-resistant material greatly enhances the wear resistance of the sealing ring 52, so that the wear rate is greatly reduced under the working condition of frequent friction with the drill rod, the service life of the sealing ring 52 is prolonged, the frequency of replacement due to serious wear is reduced, and the labor and material costs of equipment maintenance are reduced.

[0032] As shown in Figure 2As shown, the inner wall of the dust cover 1 is uniformly provided with a plurality of grooves 11, in the process of compressed air drilling, the dust generated moves with the airflow in the dust cover 1, when the dust-containing airflow passes through the inner wall of the dust cover 1, due to the existence of the grooves 11, the airflow will form a local turbulent flow area at the grooves 11, the dust particles are more easily separated from the main airflow under the action of turbulent flow, and are adsorbed or settled in the grooves 11, and the dust particles located in the grooves 11 can buffer the airflow to avoid the direct scouring of the airflow to the inner wall of the dust cover 1, thereby reducing the erosion degree of the dust to the inner wall of the dust cover 1, slowing down the wear speed of the inner wall, and prolonging the service life of the dust cover 1.

[0033] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dust removing device for air pressure drilling, characterized by: The dust cover is provided with a fixing assembly for fixing the dust cover on the drilled wall body at the opening of the dust cover, and a dust removal pipeline is connected to the lower part of the dust cover, and a spraying assembly for spraying water into the dust removal pipeline is arranged on the dust removal pipeline, and a connecting assembly for allowing a drill rod to pass through the dust cover for operation is arranged on the dust cover. The spraying assembly comprises a spraying sleeve and a high-pressure water pipe, the spraying sleeve is provided with an annular chamber, the high-pressure water pipe is in communication with the annular chamber, the spraying sleeve is fixedly sleeved on the dust removal pipeline, a plurality of spraying holes are uniformly arranged on the inner side of the spraying sleeve and extend into the dust removal pipeline, and an atomizing mesh is fixedly arranged in the spraying hole.

2. The dust removal device for compressed air drilling according to claim 1, characterized in that: The fixing assembly comprises a connecting ring and a plurality of fixing nails, the connecting ring is fixedly arranged on the dust cover, a plurality of fixing holes matched with the fixing nails are uniformly arranged on the connecting ring, and the fixing nails and the fixing holes are one-to-one corresponding.

3. The dust removal device for compressed air drilling according to claim 2, characterized in that: A gasket is fixedly arranged on the side of the connecting ring away from the dust cover.

4. The dust removal device for compressed air drilling according to claim 1, characterized in that: The connecting assembly comprises a connecting barrel and a sealing ring, the connecting barrel is fixedly arranged on the dust cover and communicates with the dust cover, and the sealing ring is fixedly arranged in the connecting barrel.

5. The dust removal device for compressed air drilling according to claim 4, characterized in that: The sealing ring is made of wear-resistant material.

6. The dust removal device for compressed air drilling according to claim 1, characterized in that: A plurality of grooves are uniformly arranged on the inner wall of the dust cover.

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