Deep groove spiral anti-overflow drill rod

Abstract

The utility model relates to the field of coal mine production, in particular to a deep groove spiral anti-overflow drill rod. The deep groove spiral anti-overflow drill rod comprises a rod body. Two ends of the rod body are respectively connected with a female joint and a male joint; wherein flow stopping grooves are formed in the two ends of the female connector in a penetrating mode, flow stopping assemblies are arranged in the flow stopping grooves, and water in the rod body can be prevented from flowing back through the flow stopping assemblies; the flow stopping groove is composed of a wedge-shaped groove, a thread groove and a steel ball groove. According to the deep groove spiral anti-overflow drill rod, the flow stopping assembly is arranged, the phenomenon that water in the rod body flows back can be prevented through the flow stopping assembly, flushing water is kept in the rod body, the flowing water pressurizing time during re-drilling is greatly shortened, operation is easier and more convenient, work is more reliable, and in addition, due to the use of the flow stopping assembly, the flow stopping assembly is more convenient to use. The product is low in manufacturing cost, the labor intensity of workers is reduced, the working efficiency is improved, meanwhile, the on-site working environment is improved, and standardized management of on-site safety production is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of coal mine production, in particular to a deep groove spiral anti-overflow drill rod. Background Art

[0002] In the daily production process of coal mines, geological disaster prevention and control is the top priority. When coal and gas are outbursts, drilling construction is the main way to extract gas. During drilling construction, water needs to be injected into the hole through the water hole in the center of the drill rod to flush the drill cuttings and cool the drill bit. After drilling a certain length, it is necessary to stop drilling and load and unload new drill rods and drill bits to meet the hole depth requirements, especially when drilling with an upward elevation angle. When connecting a new drill rod, there is a lot of water in the water hole of the drill rod. After stopping drilling and stopping pressure, the water in the drill rod will flow back due to gravity. After the water in the water hole of the drill rod has flowed back, the next step of loading and unloading drilling tools can be carried out. At present, with the continuous increase in the depth of the borehole, the borehole and the drill rod are getting longer and longer, and the water in the drill rod is getting more and more. The backflow of water takes longer and longer. The running water destroys the construction environment, is not convenient for the standardized management of on-site safety production, and also greatly increases the labor intensity and working time of workers, reducing work efficiency.

[0003] Therefore, it is necessary to provide a new deep groove spiral anti-overflow drill rod to solve the above-mentioned technical problems. Utility Model Content

[0004] In order to overcome the defects of the prior art, a deep groove spiral anti-overflow drill rod is provided to solve the above problems.

[0005] The deep groove spiral anti-overflow drill rod provided by the utility model comprises: a rod body; a female joint and a male joint are respectively connected at both ends of the rod body; wherein, a stop groove is penetrated through both ends of the female joint, and a stop groove component is arranged in the stop groove, and the stop groove can prevent the water in the rod body from flowing back; the stop groove is composed of a wedge groove, a wire groove and a steel ball groove.

[0006] Preferably, the flow-stop assembly includes a screw rod threadedly connected to the screw groove, screw holes are formed at both ends of the screw rod, steel balls are rollingly connected in the steel ball groove, the diameter of the steel balls is larger than the diameter of the screw holes, and the inner diameter of the steel ball groove is larger than the diameter of the steel balls.

[0007] Preferably, water holes are formed through both ends of the rod body, and the stop groove is connected to the water holes.

[0008] Preferably, a pin hole is provided at the top of the female connector, and a cylindrical pin is embedded in the pin hole.

[0009] Preferably, the wire groove is located between the wedge-shaped groove and the steel ball groove, the steel ball groove is located on the side of the female joint close to the rod body, and the wedge-shaped groove is located on the side of the female joint away from the rod body.

[0010] Compared with the related art, the deep groove spiral anti-overflow drill rod provided by the utility model has the following beneficial effects:

[0011] The utility model provides a flow-stop component, which can prevent water backflow in the rod body, so that flushing water is stored in the rod body, which greatly reduces the water pressurization time when drilling again, making the operation easier and the work more reliable. Moreover, due to the use of the flow-stop component, the cost of this product is relatively low, the labor intensity of workers is reduced, and the work efficiency is improved. At the same time, it also improves the on-site working environment, which is conducive to the standardized management of on-site safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a preferred embodiment of a deep groove spiral anti-overflow drill rod provided by the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure of the female connector shown.

[0014] Numbers in the figure: 1, male connector; 2, female connector; 21, stop groove; 3, rod body; 4, cylindrical pin; 5, steel ball; 6, screw rod. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0016] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0017] See also Figure 1 to Figure 2 The embodiment of the utility model provides a deep groove spiral anti-overflow drill rod, which includes: a rod body 3; a female joint 2 and a male joint 1 are connected at both ends of the rod body 3; wherein, a stop groove 21 is penetrated at both ends of the female joint 2, and a stop groove component is arranged in the stop groove 21, and the stop groove 21 can prevent the water in the rod body 3 from flowing back; the stop groove 21 is composed of a wedge groove, a wire groove and a steel ball groove.

[0018] It should be noted that: by providing a stop groove 21 in the female connector 2 and equipping it with a stop assembly, the backflow of water in the rod body 3 can be prevented, so that the flushing water is kept in the rod body, and the water pressurization time when drilling again is reduced. The female connector 2 and the end of the connector 1 close to the rod body 3 are connected to the rod body 3 by friction welding, and the surface of the weld is turned and smoothed. Friction welding provides a strong and reliable connection that is not easily affected by vibration and other external forces. Secondly, the weld is turned and smoothed to ensure the flatness and sealing of the connection part, further enhancing the stability of the connection.

[0019] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The flow-stopping assembly includes a screw rod 6 threadedly connected to the wire groove, and wire holes are formed at both ends of the screw rod 6. A steel ball 5 is rollingly connected in the steel ball groove. The diameter of the steel ball 5 is larger than the diameter of the wire hole, and the inner diameter of the steel ball groove is larger than the diameter of the steel ball 5. Water holes are formed at both ends of the rod body 3, and the flow-stopping groove 21 is connected to the water holes. A pin hole is formed at the top of the female joint 2, and a cylindrical pin 4 is embedded in the pin hole.

[0020] It should be noted that the diameter of the steel ball 5 is larger than the diameter of the thread hole of the screw rod 6, which can effectively prevent the steel ball 5 from falling off. The cylindrical pin 4 is embedded in the female joint 2 through the cylindrical pin hole, which is convenient for the water flow to flow from the female joint 2 through the male joint 1 under pressure, and prevents the steel ball 5 from blocking the water hole in the center of the rod body 3. When the elevation drilling is working, the water pump pressurizes the water to lift the steel ball 5, and the overall water hole of the rod body 3 is unobstructed, thereby ensuring the normal operation of the drilling. When the rod body 3 is connected and unloaded or the drilling tool is lifted and lowered, and the pump and pressure are stopped for some reason, the steel ball 5 naturally falls due to gravity and is embedded in the thread hole of the screw rod, thereby preventing the water in the rod body 3 from flowing back.

[0021] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The wire groove is located between the wedge groove and the steel ball groove, the steel ball groove is located on the side of the female joint 2 close to the rod body 3, and the wedge groove is located on the side of the female joint 2 away from the rod body 3.

[0022] It should be noted that the wedge-shaped groove is located at the opening of the female joint 2 . After the water enters the wedge-shaped groove, it passes through the flow paths of the wire groove and the steel ball groove and is further transmitted along the inside of the rod body 3 .

[0023] The working principle of the deep groove spiral anti-overflow drill rod provided by the utility model is as follows: when the elevation drilling is working, the water pump is pressurized to make the flushing water enter the jacking steel ball 5 through the wedge-shaped groove, and the overall water hole of the rod body 3 is unobstructed, thereby ensuring the normal operation of the drilling. When the rod body 3 is connected and unloaded or the drill tool is lifted and lowered, and the pump and pressure are stopped for some reason, the steel ball 5 naturally falls due to gravity and is embedded in the wire hole of the screw rod 6, thereby preventing the water in the rod body 3 from flowing back, so that the flushing water is stored in the rod body 3, and the water pressurization time when drilling again is reduced. The product is easy to operate, reliable in operation, low in cost, reduces the labor intensity of workers, improves work efficiency, and at the same time improves the on-site working environment, which is convenient for on-site safety production standardization management.

[0024] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A deep groove spiral anti-overflow drill pipe, characterized in that: include: Rod body (3); A female connector (2) and a male connector (1) are respectively connected at two ends of the rod body (3); Wherein, both ends of the female connector (2) are provided with flow-stop grooves (21), and a flow-stop component is provided in the flow-stop groove (21), and the flow-stop component can prevent water in the rod body (3) from flowing back; The flow-stop groove (21) consists of a wedge-shaped groove, a wire groove and a steel ball groove.

2. The deep groove spiral anti-overflow drill pipe according to claim 1, characterized in that: The flow-stop assembly comprises a screw rod (6) threadedly connected to the thread groove, thread holes are formed at both ends of the screw rod (6), a steel ball (5) is rollingly connected in the steel ball groove, the diameter of the steel ball (5) is larger than the diameter of the thread hole, and the inner diameter of the steel ball groove is larger than the diameter of the steel ball (5).

3. The deep groove spiral anti-overflow drill pipe according to claim 2, characterized in that: Water holes are formed through both ends of the rod body (3), and the stop groove (21) is connected to the water holes.

4. The deep groove spiral anti-overflow drill pipe according to claim 3, characterized in that: A pin hole is provided on the top of the female joint (2), and a cylindrical pin (4) is embedded in the pin hole.

5. The deep groove spiral anti-overflow drill pipe according to claim 4, characterized in that: The wire groove is located between the wedge-shaped groove and the steel ball groove, the steel ball groove is located on a side of the female joint (2) close to the rod body (3), and the wedge-shaped groove is located on a side of the female joint (2) away from the rod body (3).

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