An impact rotary high pressure sealing device
A high-pressure sealing and sealing cylinder technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as leakage of connecting channels, achieve the effect of ensuring sealing effect, maintaining normal high-pressure working conditions, and compact structure
Active Publication Date: 2017-08-18
CHINA UNIV OF MINING & TECH
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Problems solved by technology
[0005] The existing hydraulic rock drills generally have leakage problems in the connecting tunnels to varying degrees, especially the leakage of dynamic seals is more common under the conditions of high-speed rotation and axial displacement of the rotating shaft
Method used
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Embodiment Construction
[0031] The present invention will be further described below in conjunction with the accompanying drawings.
[0032] Such as figure 1 , figure 2 As shown, the impact rotary high-pressure sealing device includes a sealing cylinder 10, a sealing sleeve 4, an end cover 8, a guide sleeve 6, an outer end cover 7 and a drill rod assembly 11; a sealing sleeve 4, an end cover 8, a guide sleeve 6 and an outer end The cover 7 is arranged in two parts, and is symmetrically installed on the sealing cylinder 10 left and right.
[0033] The drill rod assembly 11 is threaded through the axial center of the sealing cylinder 10, such as Figure 5 As shown, the drill rod assembly 11 includes a reinforcement sleeve 11-2 and a drill rod 11-3. The drill rod 11-3 is a hollow structure, and the cylindrical sleeve-type reinforcement sleeve 11-2 is fixedly set on the drill rod 11-3 and strengthened. The sleeve 11-2 is sealed and installed and connected with the drill rod 11-3, the front end of the...
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The invention discloses an impact-rotary high-pressure sealing device. The impact-rotary high-pressure sealing device comprises a sealing barrel (10), sealing sleeves (4), end covers (8), guide sleeves (6), outer end covers (7) and a drill rod component (11), wherein the two sealing sleeves, the two end covers, the two guide sleeves and the two outer end covers are arranged on the sealing barrel in a left and right symmetrical manner; the drill rod component is connected at the axial position of the sealing barrel in a penetration manner, and comprises a reinforcement sleeve (11-2) and a drill rod (11-3); the outer peripheries and the inner peripheries of the sealing sleeves and the end covers are separately provided with a sealing groove along the peripheral direction; each sealing groove is internally provided with a sealing ring I (1), a sealing ring II (2) and a sealing ring III (5); and the guide sleeves are arranged in guide sleeve positioning assembly grooves of the end covers. The impact-rotary high-pressure sealing device is compact in structure; a high-pressure working medium can be safely sealed in a sealing cavity without leakage, and thus the aims of maintaining normal high-pressure working conditions and lowering potential safety hazards are realized; and the impact-rotary high-pressure sealing device is applicable to high-pressure sealing at working conditions of gadders and well drills and other impact-rotary working conditions.
Description
technical field [0001] The invention relates to a sealing device, in particular to a high-pressure sealing device suitable for impact rotation, and belongs to the technical field of rock drilling equipment. Background technique [0002] The impact rotation method is usually used in mining and excavation rock engineering. Usually, the drill bit or drill bit impacts the rock formation while rotating, and the impact load exceeds the crushing strength of the rock. The rock breaking effect of the rotating method is significantly improved. [0003] Percussive rock drilling is the main process of crushing medium-hard rocks. It is widely used in mining and excavation of rock engineering. Taking the rock drill as an example, the energy output by the rock drill is transmitted to the rock with the help of drill rods and drill bits (rock drilling tools) to achieve The purpose of breaking rocks to form blastholes, hydraulic rock drills are a kind of rock drill developed on the basis of ...
Claims
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IPC IPC(8): F16J15/3284F16J15/16
CPCF16J15/3284F16J15/34
Inventor 刘送永程刚沈刚彭玉兴李伟唐玮韩玉辉李洪盛吴洪状徐海乔
Owner CHINA UNIV OF MINING & TECH