Air and water leakage prevention sealing device for static ring of rotary trolley of rotary drill
By embedding copper bushing grinding pads and graphite carbon rods into the stationary ring body of the rotary trolley of the rotary drilling rig, combined with a spring design, the problem of wear of the sealing device at high temperatures was solved, achieving higher sealing performance and equipment reliability, and reducing spare parts consumption and safety risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-10
AI Technical Summary
The sealing device of the rotary trolley of the rotary drilling rig is prone to wear at high temperatures, which can lead to air and water leakage, affecting the equipment's lifespan and safety, and posing safety hazards.
The design incorporates a copper bushing grinding pad and a graphite carbon rod embedded within the stationary ring body, combined with a spring design, to ensure close contact between the graphite carbon rod and the working surface, providing lubrication and resistance to high-temperature deformation, and preventing seal wear.
It improved the sealing effect, reduced spare parts wear, increased equipment operating efficiency and safety, and prevented safety accidents.
Smart Images
Figure CN223984445U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rotary drilling rigs for mining equipment, and in particular relates to a leak-proof air and water sealing device for the stationary ring of the rotary trolley of a rotary drilling rig. Background Technology
[0002] The rotary trolley of a rotary drilling rig is a crucial component for drilling. Inside the trolley are reduction gear components such as the primary and secondary rotary shafts and the hollow shaft, all immersed in lubricating oil. The hollow shaft delivers compressed air and dust-proof water to the drill bit. The upper part of the trolley is equipped with a stationary ring seal and other leak-proof air and water devices. The stationary ring is made of nylon, which is prone to wear and deformation at excessively high operating temperatures, allowing air and water to flow into the trolley. This can cause poor lubrication of the primary and secondary shafts, the hollow shaft, and their lower bearings, leading to damage to spare parts and affecting drilling production. Simultaneously, some air and water leak to the outside, spilling onto the upper part of the trolley and the drilling platform, creating safety hazards, especially in winter when it easily freezes and becomes slippery, posing a significant risk of slipping and falling. Failure to address this promptly can result in serious safety risks to both personnel and equipment. Summary of the Invention
[0003] The purpose of this invention is to create a leak-proof air and water sealing device for the stationary ring of a rotary trolley of a roller cone drilling rig, thereby avoiding the defects of the original design, reducing the equipment failure rate, saving spare parts costs, increasing equipment operating rate, and increasing output.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] The present invention relates to a rotary trolley stationary ring anti-leakage and water sealing device, characterized in that it includes a stationary ring body, a copper sleeve grinding pad embedded in the stationary ring body, two positioning pin holes set at the two side edges of the stationary ring body, several graphite carbon rods evenly distributed so that the working surfaces are always in close contact, and a spring set at the lower part of each graphite carbon rod.
[0006] The copper bushing grinding pad has a stop and is embedded inside the stationary ring body.
[0007] The number of graphite carbon rods mentioned is six.
[0008] Advantages of this utility model:
[0009] (1) The rotary trolley of this utility model has a low manufacturing cost and is easy to install;
[0010] (2) The static ring anti-leakage air and water sealing device of the rotary trolley of the present invention greatly improves the lubrication and sealing effect of the static ring;
[0011] (3) The rotary trolley static ring anti-leakage air and water sealing device of this utility model effectively reduces spare parts wear and improves drilling efficiency;
[0012] (4) The rotary trolley of this utility model has a static ring anti-leakage air and water sealing device to prevent safety accidents. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This utility model Figure 1 Top view.
[0015] Figure 3 This utility model Figure 1 A sectional view. Detailed Implementation
[0016] The specific embodiments of this utility model are further described below with reference to the accompanying drawings.
[0017] like Figure 1 , 2 As shown in Figure 3, the rotary trolley stationary ring anti-leakage air and water sealing device of this utility model is characterized by comprising a stationary ring body 1, a copper sleeve grinding pad 4 embedded in the stationary ring body 1, two positioning pin holes 5 set at the two side edges of the stationary ring body 1, several graphite carbon rods 3 evenly distributed and embedded in the stationary ring body 1 and always in close contact with the working surface, and springs 2 respectively set at the lower part of each graphite carbon rod 3.
[0018] The copper sleeve grinding pad 4 has a stop and is embedded inside the stationary ring body 1.
[0019] The aforementioned graphite carbon rods 3 number six.
[0020] This utility model relates to a leak-proof air and water sealing device for the stationary ring of a rotary roller drill, comprising a stationary ring body 1, a spring 2, a graphite carbon rod 3, a copper sleeve grinding pad 4, and a positioning pin hole 5.
[0021] The stationary ring body 1 is a key component of the sealing device for preventing air and water leakage on the rotary trolley of the rotary drill rig.
[0022] The spring 2 is placed at the bottom of the graphite carbon rod 3 to support the graphite carbon rod 3.
[0023] The graphite carbon rods 3 are evenly distributed and embedded in the stationary ring body 1, and are always in close contact with the working surface, so as to lubricate and reduce the wear between the copper sleeve grinding pad 4 and the working surface.
[0024] The copper bushing grinding pad 4 has a stop and is embedded inside the stationary ring body 1. With the lubrication of the graphite carbon rod 3, it effectively increases wear resistance and resistance to high temperature deformation.
[0025] The positioning pin hole 5 is a groove on the edge of the stationary ring body 1. During installation, the positioning pin can be used to fix it and prevent the stationary ring body 1 from rotating together with the working part.
[0026] The specific modification scheme for the anti-leakage ventilation and water device of the rotary trolley of a roller cone drill is as follows:
[0027] The copper bushing grinding pad 4 is embedded into the stationary ring body 1 so that its working surface is precisely matched with the end face of the stationary ring.
[0028] Two positioning pin holes 5 are drilled on the two sides of the original stationary ring body 1 to fix the stationary ring body 1. Six equally spaced holes are drilled on the working surface of the copper sleeve grinding pad 4 together with the stationary ring body 1.
[0029] Place the appropriate spring 2 into the six equally spaced holes.
[0030] The graphite carbon rod 3 is embedded into the six equally spaced holes, and the spring 2 is effectively compressed. This ensures that the graphite carbon rod 3 is always in close contact with the working surface, increasing lubrication.
[0031] Based on the existing seal, a 10mm × 15mm locating pin hole 5 is machined into the stationary ring body 1 to fix the stationary ring body 1 and prevent it from rotating. This avoids wear on the O-ring seal due to rotation and increases the service life of the seal. A copper sleeve wear-resistant pad 4 with a graphite carbon rod 3 is selected. The copper sleeve grinding pad 4 is machined to match the inner diameter of the stationary ring body 1. The stationary ring body 1 and the copper sleeve grinding pad 4 are fitted together in a tight fit. Then, six holes with a diameter of 8.1mm and a depth of 20mm are drilled on the copper sleeve grinding pad 4 and the stationary ring body 1. A spring 2 with a diameter of 6mm and a length of 10mm is placed into the machined holes, and a graphite carbon rod 3 with a diameter of 8mm and a length of 15mm is pressed into the holes. Under the action of the spring 2, the graphite carbon rod 3 is kept in close contact with the working surface and kept in a lubricated state, reducing friction and thus increasing the service life of the device. Example
[0032] Due to the high drilling intensity and poor working environment, the stationary ring of the rotary trolley of drilling rig #10 frequently breaks down. Since this problem has not been solved, the wind and water protection device of the stationary ring of the rotary trolley can be improved.
[0033] The specific operating steps are as follows:
[0034] 1. Based on the existing seal, a 10mm×15mm positioning pin hole 5 is machined into the stationary ring body 1 to fix the stationary ring body 1, prevent the stationary ring body 1 from rotating, avoid wear of the O-ring seal due to rotation, and increase the service life of the seal.
[0035] 2. A copper bushing polishing pad 4 is machined to match the inner diameter of the stationary ring body 1. The stationary ring body 1 and the copper bushing polishing pad 4 are fitted together in a tight fit.
[0036] 3. Drill six equal holes with a diameter of 8.1 mm and a depth of 20 mm on the copper sleeve grinding pad 4 and the stationary ring body 1.
[0037] 4. Place the spring 2, which has a diameter of 6mm and a length of 10mm, into the machined hole.
[0038] 5. Press the 8mm diameter and 15mm long graphite carbon rod 3 into the hole. Under the action of spring 2, the graphite carbon rod 3 is kept in close contact with the working surface and kept in a lubricated state, reducing friction. This increases the service life of the device.
Claims
1. A water-tight seal device for preventing air leakage of a rotary table trolley stationary ring of a rotary drilling rig, characterized in that, It comprises a static ring body, a copper sleeve grinding pad inlaid in the static ring body, two positioning pin holes arranged at both side edges of the static ring body, a plurality of graphite carbon rods inlaid on the static ring body and uniformly distributed and always closely combined with the working surface, and springs arranged at lower parts of each graphite carbon rod respectively.
2. The windproof leakage water-tight seal device for the swing trolley stationary ring of the roller bit rig, according to claim 1, characterized in that, The copper sleeve grinding pad is provided with a stopper and is inlaid in the static ring body.
3. The windproof leakage water seal device for the swing trolley stationary ring of the roller bit rig, characterized in that, The plurality of graphite carbon rods are six.