CN211768900U

CN211768900U - Pneumatic conveying device for coal dust in hydraulic chip removal drilling of coal mine

Info

Publication number: CN211768900U
Application number: CN202020197998.XU
Authority: CN
Inventors: 李培波; 韩晓明; 李钊; 李永林; 李国栋; 李学成; 千志科; 周磊
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-10-27
Anticipated expiration: 2030-02-24

Abstract

The utility model discloses a coal mine hydraulic chip removal drilling coal dust pneumatic conveying device, which comprises a frame, an unloading pipe groove, a rubber conveying hose, a conveying ejector, a screening conical hopper and a protective cover; the periphery of the screening conical funnel is provided with screen plates, the inside of the screening conical funnel is welded and fixed with a screen plate which inclines downwards from front to back, and a coal block discharge hole is formed in the screen plate on the rear side connected with the screen plate; the protective cover is connected with the screening conical funnel up and down; the conveying ejector is fixedly connected below the screening conical hopper, and two ends of the rubber conveying hose are respectively and fixedly connected with the discharging pipe groove and the conveying ejector; the device can sieve out coal blocks with larger granularity which are discharged occasionally in the drilling process, separate water from coal dust through the screen side plate, and convey and load wet coal dust into a mine car by utilizing the pneumatic action generated by introducing compressed air into the conveying ejector; the conveying path can be bent, equipment arrangement is flexible in narrow underground coal mine tunnels, deposition of coal dust in underground tunnels is avoided, and coal dust cleaning work efficiency is improved.

Description

Pneumatic conveying device for coal dust in hydraulic chip removal drilling of coal mine

Technical Field

The utility model relates to a coal bits clearance technical field that is used for colliery underground hydraulic force chip removal to drill particularly, especially, relate to a coal bits autosegregation and conveyor that is used for colliery underground hydraulic force chip removal to drill.

Background

In the engineering construction of geological exploration drilling, gas extraction drilling, anchor bolt support drilling and the like, a hydraulic chip removal drilling process is widely adopted under a coal mine. In the work progress, a large amount of coal cinder is piled up in the tunnel after being washed out by water from the drilling, brings very big inconvenience for drilling site operation drilling equipment in the pit and the workman that comes and goes, has seriously influenced the standardized image of mine, and the colliery need arrange special cleaning personnel regularly to carry out manual cleaning to accumulational coal cinder, utilizes the spade to pack the coal cinder into the mine car, and cleaning work intensity of labour is big, and operational environment is abominable, has improved the cost of labor of coal mine production.

Disclosure of Invention

Utilize water conservancy chip removal drilling to carry out geological exploration drilling, gas drainage drilling, the coal cinder that brings in the engineering construction such as stock support drilling to above-mentioned coal enterprise piles up the problem, the utility model provides a coal mine water conservancy chip removal drilling coal cinder pneumatic conveyor, the device can be in with the drilling in-process in the great coal cinder screening of discharged granularity come out the back occasionally, further separate water and coal cinder through the screen cloth curb plate to utilize compressed air to let in the pneumatic action that carries the sprayer production and carry the moist coal cinder to pack into the mine car.

The specific technical scheme is as follows: a pneumatic conveying device for coal dust in hydraulic chip removal drilling holes of a coal mine comprises a rack, a discharging pipe groove, a rubber conveying hose, a conveying ejector, a screening conical hopper and a protective cover; wherein, the delivery injector consists of a nozzle, a throat pipe, a feed chute and an air source valve; the screening conical funnel consists of supporting legs, a connecting plate, a front side screen plate, a left side screen plate, a right side screen plate, a rear side screen plate, a screen plate and a coal guide chute; the protective cover consists of a left side plate, a right side plate, a rear side plate and a top plate.

The screening conical funnel is internally welded and fixed with a screen plate which inclines downwards from front to back, and the diameter of a screen hole of the screen plate is equal to the minimum inner diameter of a throat pipe of the conveying ejector; a coal block discharge port is arranged on the rear side screen plate connected with the screen plate, and a coal block guide chute is fixedly welded on the outer edge of the coal block discharge port; the middle position of a connecting plate of the screening conical funnel is provided with a funnel discharge port, and the peripheral edges of the funnel discharge port are respectively welded and fixed with the front side screen plate, the left side screen plate, the right side screen plate and the rear side screen plate; the four supporting legs are respectively welded and fixed at the four corners of the connecting plate.

A through drilling hole is formed in the rear side plate of the protective cover; the left side plate and the right side plate of the protective cover are respectively fixedly connected with the left screen plate and the right screen plate of the screening conical funnel up and down by bolts.

The size of the feed port of the feed chute of the conveying ejector is the same as that of the funnel discharge port of the connecting plate of the screening conical funnel, and the feed chute of the conveying ejector is fixedly connected below the funnel discharge port of the connecting plate of the screening conical funnel through bolts.

The discharging pipe groove is fixedly arranged on the frame; one end of the rubber conveying hose is fixedly connected with the discharge pipe groove by a hoop, and the other end of the rubber conveying hose is fixedly connected with a throat pipe of the conveying ejector by the hoop.

The utility model has the advantages that the pneumatic conveying device for coal mine hydraulic chip removal drilling coal dust has simple structure and convenient use, can further separate water and coal dust through the screen side plate after screening out coal blocks with larger granularity which are occasionally discharged in the drilling process, and conveys and loads moist coal dust into a mine car by utilizing the pneumatic action generated by introducing compressed air into the conveying ejector; the conveying path can be bent, equipment arrangement is flexible in a narrow underground coal mine roadway, siltation of coal dust in the underground roadway is avoided, the number of workers for cleaning the coal dust is reduced, the labor intensity of workers is reduced, the working efficiency of cleaning the coal dust is improved, and the purposes of reducing people and improving efficiency are achieved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Figure 2 is the utility model discloses a screening conical hopper structure schematic diagram.

Fig. 3 is a bottom view of the sieving conical funnel of fig. 2.

Fig. 4 is a schematic view of the protective cover structure of the present invention.

Fig. 5 is a schematic structural view of the delivery injector of the present invention.

Detailed Description

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the pneumatic conveying device for coal mine hydraulic chip removal drill coal chips comprises a frame 1, a discharge pipe chute 2, a rubber conveying hose 4, a conveying ejector 5, a screening conical hopper 6 and a protective cover 7; wherein, the delivery injector 5 consists of a nozzle 52, a throat 54, a feeding groove 53 and a gas source valve 51; the screening conical funnel 6 consists of a supporting leg 68, a connecting plate 67, a front side screen plate 61, a left side screen plate 62, a right side screen plate 66, a rear side screen plate 63, a screen plate 60 and a coal guide chute 65; the hood 7 is composed of a left side plate 71, a right side plate 73, a rear side plate 72, and a top plate 74.

The screening cone-shaped funnel 6 is internally welded and fixed with a screening plate 60 which inclines downwards from front to back, and the diameter of a screen hole of the screening plate 60 is equal to the minimum inner diameter of the throat pipe 54 of the conveying ejector 5; a coal block discharge port 64 is arranged on the rear screen plate 63 connected with the screen plate 60, and a coal block guide chute 65 is fixedly welded on the outer edge of the coal block discharge port 64; a funnel discharge port 69 is arranged in the middle of a connecting plate 67 of the screening conical funnel 6, and the peripheral edges of the funnel discharge port 69 are respectively welded and fixed with the front side screen mesh plate 61, the left side screen mesh plate 62, the right side screen mesh plate 66 and the rear side screen mesh plate 63; the four legs 68 are welded and fixed to four corners of the coupling plate 67, respectively.

A through drilling hole 75 is formed in the rear side plate 72 of the protective cover 7; the left side plate 71 and the right side plate 73 of the protective cover 7 are respectively fixedly connected with the left screen plate 62 and the right screen plate 66 of the screening conical funnel 6 by bolts.

The size of the feed inlet of the feed chute 53 of the conveying ejector 5 is the same as that of the funnel discharge port 69 of the connecting plate 67 of the screening cone-shaped funnel 6, and the feed chute 53 of the conveying ejector 5 is fixedly connected below the funnel discharge port 69 of the connecting plate 67 of the screening cone-shaped funnel 6 through bolts.

One end of the rubber conveying hose 4 is fixedly connected with the discharge pipe groove 2 by a clamp 3, and the other end of the rubber conveying hose is fixedly connected with a throat pipe 54 of the conveying ejector 5 by a clamp 8.

When engineering construction such as geological exploration drilling, gas extraction drilling, anchor bolt support drilling and the like is carried out by utilizing the hydraulic chip removal drilling, the mine car 10 is pushed below the rack 1, and the discharge opening of the discharge pipe chute 2 is opposite to the mine car 10; placing the coal block box 9 below the coal block guide chute 65 of the screening conical hopper 6; meanwhile, the screen plate 61 at the front side of the screening conical hopper 6 is abutted against the coal wall, a drill rod 11 for drilling is penetrated through a through drilling hole 75 on a rear side plate 72 of the protective cover 7 from the rear, and then the drilling operation is started; in the drilling process of the drill rod 11, water and coal dust discharged from a drill hole fall into the screening conical hopper 6 from a feed inlet on the front side of the protective cover 7, the water leaks to the ground through the front side screen plate 61, the left side screen plate 62, the right side screen plate 66 and the rear side screen plate 63 of the screening conical hopper 6, coal blocks with large particle sizes are screened out by the screen plate 60, and then fall into the coal block box 9 through the coal block discharge hole 64 and the coal block guide groove 65 on the rear side screen plate 63 of the screening conical hopper 6, and meanwhile, moist coal dust with small particle sizes falls into the feed groove 53 of the conveying ejector 5 through the screen plate 60.

When the air source valve 51 of the delivery injector 5 is opened, when compressed air enters the throat 54 from the nozzle 52 of the delivery injector 5, under the action of air force generated inside the delivery injector 5, wet coal dust enters the throat 54 from the feed chute 53, is delivered to the discharge chute 2 through the rubber delivery hose 4, and falls into the mine car 10 from the discharge opening of the discharge chute 2.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of 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 thus should not be construed as limiting the scope of the present invention.

Claims

1. Colliery water conservancy chip removal drilling coal bits pneumatic conveyor, its characterized in that: comprises a frame, a discharge pipe groove, a rubber conveying hose, a conveying ejector, a screening conical hopper and a protective cover; wherein, the delivery injector consists of a nozzle, a throat pipe, a feed chute and an air source valve; the screening conical funnel consists of supporting legs, a connecting plate, a front side screen plate, a left side screen plate, a right side screen plate, a rear side screen plate, a screen plate and a coal guide chute; the protective cover consists of a left side plate, a right side plate, a rear side plate and a top plate.

2. The pneumatic conveying device for coal mine hydraulic chip removal drill coal dust according to claim 1, characterized in that: the screening conical funnel is internally welded and fixed with a screen plate which inclines downwards from front to back, and the diameter of a screen hole of the screen plate is equal to the minimum inner diameter of a throat pipe of the conveying ejector; a coal block discharge port is arranged on the rear side screen plate connected with the screen plate, and a coal block guide chute is fixedly welded on the outer edge of the coal block discharge port; the middle position of a connecting plate of the screening conical funnel is provided with a funnel discharge port, and the peripheral edges of the funnel discharge port are respectively welded and fixed with the front side screen plate, the left side screen plate, the right side screen plate and the rear side screen plate; the four supporting legs are respectively welded and fixed at the four corners of the connecting plate.

3. The pneumatic conveying device for coal mine hydraulic chip removal drill coal dust according to claim 1, characterized in that: a through drilling hole is formed in the rear side plate of the protective cover; the left side plate and the right side plate of the protective cover are respectively fixedly connected with the left screen plate and the right screen plate of the screening conical funnel up and down by bolts.

4. The pneumatic conveying device for coal mine hydraulic chip removal drill coal dust according to claim 1, characterized in that: the size of the feed port of the feed chute of the conveying ejector is the same as that of the funnel discharge port of the connecting plate of the screening conical funnel, and the feed chute of the conveying ejector is fixedly connected below the funnel discharge port of the connecting plate of the screening conical funnel through bolts.

5. The pneumatic conveying device for coal mine hydraulic chip removal drill coal dust according to claim 1, characterized in that: the discharging pipe groove is fixedly arranged on the frame; one end of the rubber conveying hose is fixedly connected with the discharge pipe groove by a hoop, and the other end of the rubber conveying hose is fixedly connected with a throat pipe of the conveying ejector by the hoop.