Air cap of rotary drill

Abstract

The utility model discloses a blast cap of a rotary drill, belongs to the technical field of mine perforation, and solves the problems that the blast cap of the existing rotary drill and the connecting position of the blast cap lose sealing protection due to work, and the blast cap is difficult to maintain. The cone drill comprises a cone drill and a rotary joint, one end of the rotary joint is connected with a sealing gland through a connector, the sealing gland is connected with the cone drill, and the other end of the rotary joint is connected with an air pipe bayonet. The rotary joint is simple in structure and convenient to use, in the operation process, the rotary joint moves along with a drill bit of the rotary drill, the rotary joint and the drill bit in the working process form uniform coaxiality and concentricity movement, the operation and maintenance cost of the rotary drill is effectively reduced, the maintenance labor intensity is reduced, and the safety in the operation process is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mining drilling technology, specifically relating to a wind cap for a roller cone drill. Background Technology

[0002] A rotary drill is a drilling device primarily used in large open-pit mines. Over the past half-century, open-pit drilling equipment has evolved from "nodding drills" to flame drills and percussion (down-the-hole) drills. Ultimately, the rotary drill, with its advantages of large hole diameter and high drilling efficiency, has become the most widely used drilling equipment in large and medium-sized open-pit mines.

[0003] In mining production, the drilling process of a rotary drill is crucial. During the drilling process, the drill bit of the rotary drill needs to rise and fall rapidly in large numbers. The drill bit and the drill rod will swing and squeeze from side to side, causing the air cap and the seal at the air cap connection point of the rotary drill to be torn and deformed, losing their original sealing and protective function. Therefore, frequent maintenance is required. This not only affects the overall production efficiency and equipment drilling efficiency, but also increases the labor intensity of maintenance workers and poses a significant safety risk during equipment operation. Utility Model Content

[0004] This invention provides a vent cap for a roller cone drill to solve the problems that the vent cap and its connection points of existing roller cone drills lose their sealing protection during operation, and that it is difficult to maintain the vent cap.

[0005] The technical solution of this utility model is: a wind cap for a rotary drill, including a rotary drill and a rotary joint. One end of the rotary joint is connected to a sealing cap through a connector. The sealing cap is connected to the rotary drill. The other end of the rotary joint is connected to a duct clamp.

[0006] As a further improvement of this utility model, the duct bayonet is provided with threads corresponding to the duct.

[0007] The beneficial effects of this utility model are as follows: By modifying the original seal into a rotary joint, the rotary joint moves in tandem with the drill bit of the rotary drill during operation. This ensures that the rotary joint and the drill bit move in a unified coaxial and concentric manner, preventing the seal at the air cap and its connection point from being torn or deformed due to swaying or squeezing, thus avoiding loss of its original sealing and protective function. This utility model has a simple structure and is easy to use, effectively reducing the operation and maintenance costs of the rotary drill, reducing the labor intensity of maintenance, and improving safety during operation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] In the diagram: 1-Sealing gland, 2-Connector, 3-Rotary joint, 4-Duct clamp, 5-Roller drill. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] like Figure 1 As shown, a vent cap for a roller cone drill includes a roller cone drill 5.

[0012] A vent cap for a rotary drill rig also includes a rotary joint 3. One end of the rotary joint 3 is connected to a sealing gland 1 via a connector 2. The sealing gland 1 is connected to the rotary drill rig 5. The other end of the rotary joint 3 is connected to a duct clamp 4.

[0013] The duct clamp 4 is provided with threads corresponding to the duct.

[0014] In use, connect the sealing cap 1 to the rotary drill 5 and ensure a seal. Screw the air duct into the air duct bayonet 4 to supply air to the rotary joint 3. Start the rotary drill 5 and make the whole unit rotate with the rotary drill 5. At this time, the rotary joint 3 rotates synchronously with the rotating part of the rotary drill 5, forming a uniform coaxiality and concentricity with the drill bit during operation. This not only prevents particles and dust from entering the gearbox and damaging the internal parts, but also keeps the modified rotary joint 3 rotating with the drill bit and drill rod to form a seamless connection, improving the sealing effect.

Claims

1. A vent cap for a roller cone drill, characterized in that: It includes a rotary joint (3), one end of which is connected to a sealing cap (1) via a connector (2), the sealing cap (1) being connected to a roller cone drill (5), and the other end of the rotary joint (3) being connected to a duct clamp (4), the duct clamp (4) being provided with threads corresponding to the duct.

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