Coal mine underground air drill drilling dust removal device

Abstract

The utility model discloses an underground coal mine air drill hole drilling dust removal device, belongs to the technical field of underground coal mine dust removal, and solves the problem that dust cannot be effectively removed during underground coal mine hole drilling. An inner shell clamping structure is sleeved in one end of a barrel, an outer shell clamping structure is arranged on the barrel, and a dust falling barrel is connected below the barrel; the inner shell clamping structure comprises an inner rotary clamping handle which is connected with a circular rotary inner shell, the circular rotary inner shell is connected with an inner shell movable beef tendon sleeve, an inner shell fixed beef tendon sleeve is fixedly arranged in the cylinder body, and the inner shell fixed beef tendon sleeve is in contact with the inner shell movable beef tendon sleeve; the outer shell clamping structure comprises an outer rotating clamping handle connected with a circular rotating shell, the circular rotating shell is arranged on the peripheral side wall of the cylinder in a sleeving mode, the circular rotating shell is connected with a shell movable beef tendon sleeve, and a shell fixed beef tendon sleeve is fixedly arranged on the peripheral side wall of the cylinder. According to the air drill, dust harmful to the respiratory system of a human body is eliminated when the air drill is used for drilling, the harm of the dust to staff is effectively reduced, and the working environment of the staff is improved.

Description

Technical Field

[0001] This utility model belongs to the field of underground dust removal technology in coal mines, and specifically relates to a dust removal device for underground pneumatic drills in coal mines. Background Technology

[0002] Pneumatic drills are a common type of mechanical tool used in my country's mining and underground coal mines for drilling and blasting holes in rock walls. While widely applicable, they produce harmful dust. Wet drilling is generally used in underground tunnels, but the resulting mud and muddy water cannot be drained, especially in downhill tunnels, where the muddy water inside the borehole affects the depth of explosive loading. Therefore, dry drilling is sometimes used. While dry drilling produces excellent blasting results, the generated dust cannot be eliminated. The most common method is to wear dust masks, but this makes breathing difficult. There is no better solution. The dust generated during pneumatic drilling poses a significant health hazard to underground workers. Chronic silicosis is extremely harmful to the respiratory system, making dust control and suppression one of the biggest challenges for frontline miners. Utility Model Content

[0003] The purpose of this invention is to provide a dust removal device for underground pneumatic drills in coal mines, so as to solve the problem of ineffective dust removal during underground drilling in coal mines.

[0004] The technical solution of this utility model is: a dust removal device for drilling holes in a coal mine pneumatic drill, including a cylinder, an inner shell clamping structure is provided at one end of the cylinder, an outer shell clamping structure is also provided on the cylinder, and a dust collection bucket is connected to the bottom of the cylinder.

[0005] The inner shell clamping structure includes an inner rotating clamping handle, which is connected to a circular rotating inner shell. The circular rotating inner shell is fitted inside one end of the cylinder and is connected to a movable inner shell tendon sleeve. A fixed inner shell tendon sleeve is fixed inside the cylinder and contacts the movable inner shell tendon sleeve. A hexagonal drill rod is fitted inside the circular rotating inner shell, and the hexagonal drill rod has a drill rod air inlet hole along its length.

[0006] The outer shell clamping structure includes an outer rotating clamping handle, which is connected to a circular rotating outer shell. The circular rotating outer shell is fitted onto the outer peripheral side wall of the cylinder. The circular rotating outer shell is connected to a movable outer shell tendon sleeve. A fixed outer shell tendon sleeve is fixed to the outer peripheral side wall of the cylinder, and the fixed outer shell tendon sleeve is in contact with the movable outer shell tendon sleeve.

[0007] As a further improvement of this utility model, the cylinder body and the bottom of the dust collection bin are connected by a flexible hose. The dust collection bin is provided with an air outlet and a water inlet for water exchange at the top. The dust collection bin is provided with upper and lower conical water-proof cavities. The upper part of the dust collection bin is provided with upper filter dust prevention water, and the lower part of the dust collection bin is provided with lower filter dust prevention water. The conical surface of the lower part of the dust collection bin is also provided with an upward air outlet. The bottom of the dust collection bin is provided with a circular dust collection pipe with multiple dust collection holes evenly distributed around it. The bottom side wall of the dust collection bin is provided with a drain hole.

[0008] As a further improvement of this utility model, the outer wall of the circular rotating inner shell is provided with an inner shell sealing thread, and the inner wall of one end of the cylinder is provided with an inner shell sealing thread, which is compatible with the inner shell sealing thread; the inner wall of the circular rotating outer shell is provided with an outer shell fixing thread, and the outer peripheral side wall of the cylinder is provided with an outer shell fixing thread, which is compatible with the outer shell fixing thread.

[0009] As a further improvement of this utility model, an inner rotating spherical head is provided at the connection between the circular rotating inner shell and the inner shell movable tendon sleeve; an outer rotating spherical head is provided at the connection between the circular rotating outer shell and the outer shell movable tendon sleeve.

[0010] As a further improvement of this utility model, the cross-sections of the inner shell movable tendon sleeve, the inner shell fixed tendon sleeve, the outer shell movable tendon sleeve, and the outer shell fixed tendon sleeve are conical.

[0011] As a further improvement of this utility model, the bottom of the dust collection bin is provided with multiple ventilation holes, and water-blocking soft rubber sheets are provided in the ventilation holes by fixing soft rubber sheet clips.

[0012] As a further improvement of this utility model, the dust collection bin is divided into two parts with the upper and lower conical water-proof cavities as the boundary. The upper and lower parts of the dust collection bin are connected by the upper convex thread and the lower concave thread.

[0013] As a further improvement of this utility model, the dust collection bin is provided with an upper water level line and a lower water level line; the outer wall of the dust collection bin is provided with a handle; the air outlet and water inlet of the dust collection bin are cylindrical, the air outlet and water inlet are provided with secondary dust filter cotton, and a baffle plate is provided at the connection between the air outlet and water inlet and the dust collection bin, the baffle plate is arranged opposite to each other and extends into the dust collection bin.

[0014] The beneficial effects of this utility model are as follows: This utility model changes the working environment in coal mines, directly eliminating the dust harmful to the human respiratory system generated during pneumatic drilling, reducing the occurrence of silicosis, and preventing dust from flying around during pneumatic drilling, so that the underground roadway is no longer shrouded in mist. Furthermore, it makes the working surface slippery, so that people can walk on muddy ground, solving the problem of workers slipping and falling due to dust generated during pneumatic drilling and slippery underground roadways. It also improves the working environment in underground roadways. Moreover, this utility model is very durable and practical, providing protection for personal safety and safe production, solving the harm of dust to the human respiratory system, enabling underground workers to have a good working environment and work with peace of mind, effectively reducing the harm of dust to employees, and improving the working environment for employees. Attached Figure Description

[0015] Figure 1 This is a front view of the entire utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a top sectional view of the dust collection bin in this utility model;

[0018] Figure 4 This is a side sectional view of the middle cylinder of this utility model;

[0019] Figure 5 This is a side sectional view of the shell clamping structure in this utility model;

[0020] Figure 6 This is a side cross-sectional view of the inner shell clamping structure in this utility model.

[0021] In the diagram: 1-Cylinder body; 2-Inner rotating clamping handle; 3-Inner shell sealing external thread; 4-Inner shell sealing internal thread; 5-Circular rotating inner shell; 6-Inner rotating spherical head; 7-Inner shell movable reinforcing sleeve; 8-Inner shell fixed reinforcing sleeve; 9-Inner shell fixing screw; 10-Inner shell fixing iron ring; 11-Inner shell fixing outer round iron piece; 12-Inner shell fixing inner round iron piece; 13-Inner shell fixing screw; 15-Inner shell circular groove; 16-Outer rotating clamping handle; 17-Outer shell fixing internal thread; 18-Outer shell fixing external thread; 19-Circular rotating outer shell; 20-Outer rotating spherical head; 21-Outer shell movable reinforcing sleeve; 22-Outer shell fixed reinforcing sleeve; 23-Outer shell fixing screw; 24-Outer shell fixing iron ring; 25-Outer shell fixing outer round iron piece; 26-Outer shell fixing inner round iron piece; 27-Outer shell fixed... 29-Fixed screw; 30-Circular groove on outer shell; 31-Dust outlet; 32-Hose connection thread; 33-Hose fixing clip; 34-Dust collection bin connection thread; 35-Inlet; 36-Air outlet and water inlet; 37-Secondary dust filter cotton; 38-Dust collection bin; 39-Water baffle; 40-Upper water level line; 41-Upper filter dustproof water; 42-Water-blocking soft rubber sheet; 43-Ventilation hole; 44-Fixing soft rubber sheet clip; 45-Bug handle; 46-Lower water level line; 47-Upward air outlet; 48-Drain hole; 49-Drain hole plug; 50-Lower filter dustproof water; 51-Upper and lower conical water-proof cavities; 52-Circular dust collection pipe; 53-Dust collection hole; 54-Upper convex thread; 55-Lower concave thread; 56-Hexagonal drill rod; 57-Drill rod air inlet. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-6 As shown, a dust removal device for drilling holes in a coal mine pneumatic drill includes a cylinder 1. An inner shell clamping structure is fitted inside one end of the cylinder 1, and an outer shell clamping structure is also provided on the cylinder 1. A dust collection bucket 38 is connected to the bottom of the cylinder 1.

[0024] The inner shell clamping structure includes an inner rotating clamping handle 2, which is connected to a circular rotating inner shell 5. The circular rotating inner shell 5 is fitted inside one end of the cylinder 1. The circular rotating inner shell 5 is connected to a movable inner shell tendon sleeve 7. An inner shell fixed tendon sleeve 8 is fixed inside the cylinder 1. The inner shell fixed tendon sleeve 8 is in contact with the inner shell movable tendon sleeve 7. A hexagonal drill rod 56 is fitted inside the circular rotating inner shell 5. The hexagonal drill rod 56 has a drill rod air inlet hole 57 along its length.

[0025] The outer shell clamping structure includes an outer rotating clamping handle 16, which is connected to a circular rotating outer shell 19. The circular rotating outer shell 19 is fitted onto the outer peripheral side wall of the cylinder 1. The circular rotating outer shell 19 is connected to a movable outer shell tendon sleeve 21. A fixed outer shell tendon sleeve 22 is fixed to the outer peripheral side wall of the cylinder 1. The fixed outer shell tendon sleeve 22 is in contact with the movable outer shell tendon sleeve 21.

[0026] The bottom of the cylinder 1 and the dust collection bin 38 are connected by a flexible hose 32. The dust collection bin 38 is provided with an air outlet and a water inlet 36. The dust collection bin 38 is provided with upper and lower conical water-proof cavities 51. The upper part of the dust collection bin 38 is provided with an upper filter dustproof water 41, and the lower part of the dust collection bin 38 is provided with a lower filter dustproof water 50. The conical surface of the lower part of the dust collection bin 38 is also provided with an upward air outlet 47. The bottom of the dust collection bin 38 is provided with a circular dust collection pipe 52. The circular dust collection pipe 52 is evenly distributed with multiple dust collection holes 53 in a circumferential direction. The bottom side wall of the dust collection bin 38 is provided with a drain hole 48.

[0027] The outer wall of the circular rotating inner shell 5 is provided with an inner shell sealing thread 3, and the inner wall of one end of the cylinder 1 is provided with an inner shell sealing thread 4, which is compatible with the inner shell sealing thread 3; the inner wall of the circular rotating outer shell 19 is provided with an outer shell fixing thread 17, and the outer circumferential side wall of the cylinder 1 is provided with an outer shell fixing thread 18, which is compatible with the outer shell fixing thread 17.

[0028] An inner rotating spherical head 6 is provided at the connection between the circular rotating inner shell 5 and the inner shell movable tendon sleeve 7; an outer rotating spherical head 20 is provided at the connection between the circular rotating outer shell 19 and the outer shell movable tendon sleeve 21. The cross-sections of the inner shell movable tendon sleeve 7, the inner shell fixed tendon sleeve 8, the outer shell movable tendon sleeve 21, and the outer shell fixed tendon sleeve 22 are conical.

[0029] The bottom of the dust collection bin 38 is provided with multiple ventilation holes 43, and a water-blocking soft rubber sheet 42 is provided in the ventilation holes 43 through a fixing soft rubber sheet clip 44. The dust collection bin 38 is divided into two parts by the upper and lower conical water-proof cavities 51, and the upper and lower parts of the dust collection bin 38 are connected by the upper convex threaded opening 54 and the lower concave threaded opening 55.

[0030] The dust collection bin 38 is provided with an upper water level line 40 and a lower water level line 46; the outer wall of the dust collection bin 38 is provided with a handle 45; the air outlet and water inlet 36 of the dust collection bin 38 is cylindrical, and the air outlet and water inlet 36 is provided with a secondary dust filter cotton 37; a baffle plate 39 is provided at the connection between the air outlet and water inlet 36 and the dust collection bin 38, and the baffle plate 39 is arranged opposite to each other and extends into the dust collection bin 38.

[0031] The cylinder 1 is a thickened circular shape. A dust outlet 30 is provided at the bottom of the cylinder 1. The dust outlet 30 is connected to one end of the hose 32 through the hose connection thread 31. The inlet 35 of the dust collection bin 38 is connected to the other end of the hose 32 through the dust collection bin connection thread 34. The hose 32 and the outer wall of the dust collection bin 38 are fixed by the hose fixing clamp 33. The drain hole 48 is blocked by a drain hole plug 49.

[0032] The outer wall of the cylinder 1 is welded with a housing fixing iron ring 24 and a housing fixing tendon sleeve 22. The housing fixing iron ring 24 and the housing fixing tendon sleeve 22 are further fixedly connected by housing fixing screws 23. The circular rotating housing 19 and the housing movable tendon sleeve 21 are also fitted with a housing fixing inner circular iron plate 26 and a housing fixing outer circular iron plate 25. A housing circular groove 29 is fitted between the housing fixing inner circular iron plate 26 and the housing fixing outer circular iron plate 25. The outer rotating spherical head 20 is located in the housing circular groove 29. Multiple housing fixing screws 27 are provided on the housing fixing inner circular iron plate 26 and the housing fixing outer circular iron plate 25.

[0033] The inner wall of the end of the cylinder 1 is welded with an inner shell fixing iron ring 10 and an inner shell fixing tendon sleeve 8. The inner shell fixing iron ring 10 and the inner shell fixing tendon sleeve 8 are further fixedly connected by an inner shell fixing screw 9. An inner shell fixing outer round iron plate 11 and an inner shell fixing inner round iron plate 12 are fitted between the circular rotating inner shell 5 and the inner shell movable tendon sleeve 7. An inner shell circular groove 15 is fitted between the inner shell fixing outer round iron plate 11 and the inner shell fixing inner round iron plate 12. The inner rotating spherical head 6 is located in the inner shell circular groove 15. Multiple inner shell fixing screws 13 are provided on the inner shell fixing outer round iron plate 11 and the inner shell fixing inner round iron plate 12.

[0034] The inner rotating clamping handle 2, the inner shell sealing external thread 3, the circular rotating inner shell 5, the inner rotating spherical head 6, the inner shell movable reinforcing sleeve 7, the inner shell fixing outer circular iron plate 11, the inner shell fixing inner circular iron plate 12, the inner shell fixing screw 13, and the inner shell circular groove 15 together form a movable clamping drill rod, which serves to seal against dust leakage; the inner shell sealing internal thread 4, the inner shell fixing reinforcing sleeve 8, the inner shell fixing screw 9, and the inner shell fixing iron circle 10 are a whole, which are fixed to the inner end of the integral thickened circular cylinder 1 by welding, forming a fixed inner shell clamping structure for clamping the drill rod, which serves to seal against dust leakage.

[0035] The rock wall fixing and sealing system consists of an outer rotating clamping handle 16, an outer shell fixing thread 18, a circular rotating outer shell 19, an outer rotating spherical head 20, an outer shell movable tendon sleeve 21, an outer shell fixing outer circular iron plate 25, an outer shell fixing inner circular iron plate 26, an outer shell fixing screw 27, and an outer shell circular groove 29, forming a movable rock wall that serves to fix the whole structure and seal off dust leakage. The outer shell fixing inner thread 17, the outer shell fixing tendon sleeve 22, the outer shell fixing screw 23, and the outer shell fixing iron circle 24 are welded to the outer front of the overall thickened circular cylinder 1, forming an outer shell clamping structure that serves to fix the rock wall as a whole and seal off dust leakage.

[0036] The dust collection (dust removal) section is connected to the dust collection bucket 38 via a dust outlet 30, a hose connection thread 31, a hose 32, a hose fixing clamp 33, a dust collection bucket connection thread 34, and an inlet 35. The dust collection (dust removal) section also consists of a baffle plate 39, an upper water level line 40, an upper filter dustproof water 41, a water-blocking soft rubber sheet 42, and an upper convex thread 54, forming an upper water dust removal structure for the dust collection bucket 38. It also consists of a lower water level line 46, an upward air outlet 47, a lower filter dustproof water 50, upper and lower conical water-proof cavities 51, a circular dust dispersion pipe 52, a dust dispersion hole 53, and a lower concave thread 55, forming a lower water dust removal structure for the dust collection bucket 38. The upper and lower conical water-proof cavities 51, the upper convex thread 54, and the lower concave thread 55 connect the upper and lower parts of the dust collection bucket 38 together to form a dust collection (dust removal) device.

[0037] In use, the hexagonal drill rod 56 is inserted through the circular rotating inner shell 5. By rotating the inner rotating clamping handle 2, the circular rotating inner shell 5 and the inner wall of the cylinder 1 are fixed together with the inner shell sealing threads 3 and 4. The cooperation between the inner shell movable tendon sleeve 7 and the inner shell fixed tendon sleeve 8 can further improve the clamping effect of the hexagonal drill rod 56. Similarly, the other end of the cylinder 1 is inserted into the outer rock wall (cavity). By rotating the outer rotating clamping handle 16, the circular rotating outer shell 19 and the outer wall of the cylinder 1 are fixed together with the outer shell fixed inner threads 17 and 18. The cooperation between the outer shell movable tendon sleeve 21 and the outer shell fixed tendon sleeve 22 can further improve the fixing effect.

[0038] During pneumatic drilling, dust enters the cylinder 1 through the drill rod air inlet 57, then flows through the dust outlet 30, hose 32, and inlet 35 into the dust collection bin 38. The upper and lower conical water-proof cavities 51 form a waterproof barrier, effectively preventing moisture penetration. Part of the dust is moistened and adsorbed by the upper filter dustproof water 41, and finally exits through the air outlet and water exchange inlet 36. During this process, the dust is further filtered by the secondary dust filter cotton 37. The other part of the dust falls into the lower filter dustproof water 50 through the upward air outlet 47 for moistening and adsorption, and finally exits through the dust dispersion hole 53. This eliminates the dust that is harmful to the human respiratory system when the pneumatic drill is drilling. When the upper filter dustproof water 41 and the lower filter dustproof water 50 need to be replaced after the operation, pull the drain hole plug 49 out of the drain hole 48, drain the water used during the operation and then plug it in. Then, the replacement water can be introduced through the air outlet and water inlet 36 to carry out the next operation.

Claims

1. A dust removal device for underground pneumatic drills in coal mines, characterized in that: Includes a cylinder (1), with an inner shell clamping structure fitted inside one end of the cylinder (1), and an outer shell clamping structure also provided on the cylinder (1), with a dust collection bucket (38) connected below the cylinder (1). The inner shell clamping structure includes an inner rotating clamping handle (2), which is connected to a circular rotating inner shell (5). The circular rotating inner shell (5) is fitted inside one end of the cylinder (1). The circular rotating inner shell (5) is connected to a movable inner shell tendon sleeve (7). An inner shell fixing tendon sleeve (8) is fixed inside the cylinder (1). The inner shell fixing tendon sleeve (8) is in contact with the inner shell movable tendon sleeve (7). A hexagonal drill rod (56) is fitted inside the circular rotating inner shell (5). The hexagonal drill rod (56) has a drill rod air inlet hole (57) along its length. The outer shell clamping structure includes an outer rotating clamping handle (16), which is connected to a circular rotating outer shell (19). The circular rotating outer shell (19) is fitted onto the outer peripheral side wall of the cylinder (1). The circular rotating outer shell (19) is connected to a movable outer shell tendon sleeve (21). A fixed outer shell tendon sleeve (22) is fixed on the outer peripheral side wall of the cylinder (1). The fixed outer shell tendon sleeve (22) is in contact with the movable outer shell tendon sleeve (21).

2. The dust removal device for underground pneumatic drills in coal mines according to claim 1, characterized in that: The cylinder (1) is connected to the bottom of the dust collection bin (38) via a flexible hose (32). The dust collection bin (38) is provided with an air outlet and a water inlet (36) at the top. The dust collection bin (38) is provided with upper and lower conical water-proof cavities (51). The upper half of the upper and lower conical water-proof cavities (51) of the dust collection bin (38) is provided with upper filter dustproof water (41), and the lower half of the dust collection bin (38) is provided with lower filter dustproof water (50). The conical surface of the lower half of the dust collection bin (38) is also provided with an upward air outlet (47). The bottom of the dust collection bin (38) is provided with a circular dust collection pipe (52). The circular dust collection pipe (52) is evenly distributed with multiple dust collection holes (53) in the circumference. The bottom side wall of the dust collection bin (38) is provided with a drain hole (48).

3. A dust removal device for underground pneumatic drills in coal mines according to claim 1 or 2, characterized in that: The outer wall of the circular rotating inner shell (5) is provided with an inner shell sealing thread (3), and the inner wall of one end of the cylinder (1) is provided with an inner shell sealing thread (4). The inner shell sealing thread (4) is adapted to the inner shell sealing thread (3). The inner wall of the circular rotating outer shell (19) is provided with an outer shell fixing thread (17), and the outer peripheral side wall of the cylinder (1) is provided with an outer shell fixing thread (18). The outer shell fixing thread (18) is adapted to the outer shell fixing thread (17).

4. The dust removal device for underground pneumatic drills in coal mines according to claim 3, characterized in that: The circular rotating inner shell (5) is provided with an inner rotating spherical head (6) at the connection between the inner shell movable tendon sleeve (7); the circular rotating outer shell (19) is provided with an outer rotating spherical head (20) at the connection between the outer shell movable tendon sleeve (21).

5. A dust removal device for underground pneumatic drills in coal mines according to claim 4, characterized in that: The inner shell movable tendon sleeve (7), the inner shell fixed tendon sleeve (8), the outer shell movable tendon sleeve (21) and the outer shell fixed tendon sleeve (22) have conical cross sections.

6. A dust removal device for underground pneumatic drills in coal mines according to claim 5, characterized in that: The dust collection bin (38) has multiple ventilation holes (43) at the bottom, and a water-blocking soft rubber sheet (42) is provided in the ventilation hole (43) through a fixing soft rubber sheet clip (44).

7. A dust removal device for underground pneumatic drills in coal mines according to claim 6, characterized in that: The dust collection bin (38) is divided into two parts by the upper and lower conical water-proof cavities (51). The upper and lower parts of the dust collection bin (38) are connected by the upper convex thread (54) and the lower concave thread (55).

8. A dust removal device for underground pneumatic drills in coal mines according to claim 7, characterized in that: The dust collection bin (38) is provided with an upper water level line (40) and a lower water level line (46); the outer wall of the dust collection bin (38) is provided with a handle (45); the air outlet and water inlet (36) of the dust collection bin (38) is cylindrical, the air outlet and water inlet (36) is provided with a secondary dust filter cotton (37), and a baffle plate (39) is provided at the connection between the air outlet and water inlet (36) and the dust collection bin (38). The baffle plate (39) is arranged opposite to each other and extends into the dust collection bin (38).

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