Compressed air backflow device for rod stabilizer of rotary drill

Abstract

The utility model discloses a rotary drill rod stabilizer compressed air backflow device which comprises a hollow rod stabilizer, a threaded hole is formed in one side of the inner wall of the hollow rod stabilizer, a backflow device is installed in the threaded hole, the backflow device comprises a one-way valve body and a spring connecting piece, one side of the one-way valve body is connected with one end of the spring connecting piece, and the other side of the one-way valve body is connected with the other end of the spring connecting piece. One end of the spring connecting piece is fixedly connected with the rod stabilizer, the other end of the spring connecting piece is connected with a one-way valve adjusting screw, the spring connecting piece comprises a spring body, a first connecting rod and a second connecting rod, and one end of the spring body is fixedly connected with one end of the first connecting rod. The one-way valve is designed into a spring compression type, the design is simple, the cost is low, the service life is long, disassembly is convenient, the one-way valve can be repeatedly used, rock slag in a water hole is blocked outside a drill rod through the backflow device, the effects of preventing equipment from being damaged and blocking a pipeline are achieved, and the service life of the rotary drill rig is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of open-pit rotary blasthole drills, in particular to an air reverse flow device for a stabilizer of a rotary blasthole drill. Background Technique

[0002] At present, most mines use large equipment for open-pit mining. Due to the large number of mining equipment, cable lines are important components for transmitting energy for various equipment. Previously, the stabilizer of the open-pit rotary blasthole drill was designed with a hollow structure, and its function was to transmit air with high air volume and low air pressure, thereby removing rock slag in the drill hole to form a blast hole.

[0003] However, the traditional use of rotary blasthole drills has the following disadvantages:

[0004] When the rotary blasthole drill suddenly loses power during use, the air compressor stops rotating, and the compressed air of the air compressor will generate reverse pressure air. This reverse pressure air will carry the water and rock slag in the hole into the pipeline, damaging the pipeline of the drill hole and the air compressor equipment, and shortening the service life of the rotary blasthole drill. Content of the Utility Model

[0005] The purpose of the utility model is to provide an air reverse flow device for a stabilizer of a rotary blasthole drill, so as to solve the problem that when the rotary blasthole drill suddenly loses power during use, the air compressor stops rotating, and the compressed air of the air compressor will generate reverse pressure air. This reverse pressure air will carry the water and rock slag in the hole into the pipeline, damaging the pipeline of the drill hole and the air compressor equipment, and shortening the service life of the rotary blasthole drill as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An air reverse flow device for a stabilizer of a rotary blasthole drill, including a hollow stabilizer. A threaded hole is opened on one side of the inner wall of the hollow stabilizer, and a reverse flow device is installed inside the threaded hole. The reverse flow device includes a one-way valve body and a spring connecting piece. One side of the one-way valve body is connected to one end of the spring connecting piece, and the other end of the spring connecting piece is connected to a one-way valve adjusting screw. The spring connecting piece includes a spring body, a first connecting rod, and a second connecting rod. One end of the spring body is fixedly connected to one end of the first connecting rod, and the other end of the spring body is fixedly connected to one end of the second connecting rod. The one-way valve body includes a valve body and a support spring. A valve core is installed on one side of the inner wall of the valve body. A sealing ring is sleeved at the connection between the valve body and the valve core. One end of the valve core is fixedly connected to one end of the support spring, and the other end of the support spring is fixedly connected to the side of the valve body opposite thereto.

[0007] Preferably, the one-way valve adjusting screw is threadedly connected to the threaded hole. The user rotates the one-way valve adjusting screw, and the screw on the surface of the one-way valve adjusting screw matches the thread on the inner wall of the threaded hole, thereby installing the reverse flow device inside the hollow stabilizer.

[0008] Preferably, a suspension ring is fixedly installed at one end of the first connecting rod away from the spring body, and the suspension ring is connected to the one-way valve adjusting screw. The user uses the suspension ring to sleeved on the one-way valve adjusting screw to complete the assembly of the spring connecting piece and the one-way valve adjusting screw.

[0009] Preferably, an assembly plate is fixedly installed at one end of the second connecting rod away from the spring body, and two symmetrically arranged assembly holes are formed on the surface of the assembly plate. The user screws a screw through the assembly hole to fix the assembly plate on the one-way valve body.

[0010] Preferably, a gasket is slidably connected to the middle of the second connecting rod, and screws are threadedly connected to both sides of the top of the gasket. The tops of the two screws are rotatably connected to suction cups, and one ends of the two suction cups away from the screws are connected to the side of the one-way valve body facing each other. The user slides the gasket along the second connecting rod to adjust the position of the suction cup, or the user rotates the screw. The thread on the surface of the screw matches the thread on the inner wall of the gasket, so the screw rotates and lifts relative to the gasket. The screw pushes the suction cup from one side, and the suction cup adsorbs at the use position to complete the adsorption and fixation of the spring connecting piece and the one-way valve body.

[0011] Preferably, screw sleeves are installed at both ends of the valve body at a high position, and nuts extending to the outside are threadedly connected to the interiors of the two screw sleeves. Connecting springs are fixedly installed on the opposite sides of the two nuts, and one ends of the two connecting springs away from the nuts are fixedly connected to the side of the screw sleeve facing each other.

[0012] Preferably, one end of one of the nuts is connected to the spring connecting piece, and the one-way valve body is connected to the spring connecting piece through the nut.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: By setting a backflow device, the one-way valve is designed as a spring compression type, which does not affect the smooth ventilation, the valve opens smoothly, the design is simple, the cost is low, the service life is long, the disassembly is convenient and it can be reused. The backflow device blocks the rock slag in the water hole outside the drill pipe, playing a role in preventing damage to the equipment and blocking the pipeline, and extending the service life of the rotary drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a connection diagram of the hollow stabilizer and the backflow device of the present utility model;

[0015] Figure 2 is a side view of the backflow device of the present utility model;

[0016] Figure 3 is a side view of the spring connecting piece of the present utility model;

[0017] Figure 4 is a cross-sectional view of the one-way valve body of the present utility model.

[0018] In the figure: 1. Hollow stabilizer; 2. Reverse flow device; 21. Check valve body; 211. Valve body; 212. Spool; 213. Sealing ring; 214. Support spring; 215. Sleeve; 216. Connecting spring; 217. Nut; 22. Spring connecting piece; 221. Spring body; 222. First connecting rod; 223. Suspension ring; 224. Second connecting rod; 225. Screw; 226. Suction cup; 227. Assembly plate; 228. Assembly hole; 229. Gasket; 23. Check valve adjusting screw; 3. Threaded hole. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Please refer to Figures 1-4 , the present invention provides a reverse air flow device for the stabilizer of a roller rig, including a hollow stabilizer 1. A threaded hole 3 is provided on one side of the inner wall of the hollow stabilizer 1. A reverse flow device 2 is installed inside the threaded hole 3. The reverse flow device 2 includes a check valve body 21 and a spring connecting piece 22. One side of the check valve body 21 is connected to one end of the spring connecting piece 22, and the other end of the spring connecting piece 22 is connected to a check valve adjusting screw 23. The spring connecting piece 22 includes a spring body 221, a first connecting rod 222, and a second connecting rod 224. One end of the spring body 221 is fixedly connected to one end of the first connecting rod 222, and the other end of the spring body 221 is fixedly connected to one end of the second connecting rod 224. The check valve body 21 includes a valve body 211 and a support spring 214. A spool 212 is installed on one side of the inner wall of the valve body 211. A sealing ring 213 is sleeved at the connection between the valve body 211 and the spool 212. One end of the spool 212 is fixedly connected to one end of the support spring 214, and the other end of the support spring 214 is fixedly connected to the side opposite to the valve body 211.

[0021] The check valve adjusting screw 23 is threadedly connected to the threaded hole 3. The user rotates the check valve adjusting screw 23, and the screw on the surface of the check valve adjusting screw 23 matches the thread on the inner wall of the threaded hole 3, thereby installing the reverse flow device 2 inside the hollow stabilizer 1.

[0022] A suspension ring 223 is fixedly installed at the end of the first connecting rod 222 away from the spring body 221. The suspension ring 223 is connected to the check valve adjusting screw 23. The user uses the suspension ring 223 to sleeved on the check valve adjusting screw 23 to complete the assembly of the spring connecting piece 22 and the check valve adjusting screw 23.

[0023] One end of the second connecting rod 224 away from the spring body 221 is fixedly installed with an assembly plate 227. Two symmetrically arranged assembly holes 228 are formed on the surface of the assembly plate 227. The user screws a screw through the assembly hole 228 to fix the assembly plate 227 on the one-way valve body 21.

[0024] A gasket 229 is slidably connected to the middle of the second connecting rod 224. Screws 225 are threadedly connected to both sides of the top of the gasket 229. Suction cups 226 are rotatably connected to the tops of the two screws 225. One ends of the two suction cups 226 away from the screws 225 are connected to the side of the one-way valve body 21 facing them. The user slides the gasket 229 along the second connecting rod 224 to adjust the position of the suction cups 226, or the user rotates the screws 225. The threads on the surface of the screws 225 match the threads on the inner wall of the gasket 229. Therefore, the screws 225 rotate and lift relative to the gasket 229, and the screws 225 push the suction cups 226 from one side. The suction cups 226 adsorb at the use position to complete the adsorption and fixation of the spring connecting piece 22 and the one-way valve body 21.

[0025] Sleeve nuts 215 are installed at both ends of the valve body 211 at a high position. Nuts 217 extending to the outside are threadedly connected to the interiors of the two sleeve nuts 215. Connecting springs 216 are fixedly installed on the opposite sides of the two nuts 217. One ends of the two connecting springs 216 away from the nuts 217 are fixedly connected to the side of the sleeve nut 215 facing them.

[0026] One end of one of the nuts 217 is connected to the spring connecting piece 22. The one-way valve body 21 is connected to the spring connecting piece 22 through the nut 217.

[0027] When the embodiment of the present application is in use: A trapezoid is designed at 40 mm upward from the end of the hollow stabilizer 1 as the conical one-way valve body 21; Secondly, threads are machined at 30 mm from the end of the hollow stabilizer 1 to form a threaded hole 3 to ensure that the one-way valve adjusting screw 23 rotates freely; The assembly of the reflux device 2 is completed. The spring connecting piece 22 is placed in the conical one-way valve body 21, and finally the one-way valve adjusting screw 23 is tightened.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A compressed air reverse flow device for a stabilizer of a rotary drill, comprising a hollow stabilizer (1), characterized in that: On one side of the inner wall of the hollow stabilizer bar (1), a threaded hole (3) is provided, and a reverse flow device (2) is installed inside the threaded hole (3). The reverse flow device (2) includes a one-way valve body (21) and a spring connecting piece (22). One side of the one-way valve body (21) is connected to one end of the spring connecting piece (22), and the other end of the spring connecting piece (22) is connected to a one-way valve adjusting screw (23). The spring connecting piece (22) includes a spring body (221), a first connecting rod (222), and a second connecting rod (224). One end of the spring body (221) is fixedly connected to one end of the first connecting rod (222), and the other end of the spring body (221) is fixedly connected to one end of the second connecting rod (224). The one-way valve body (21) includes a valve body (211) and a support spring (214). A valve core (212) is installed on one side of the inner wall of the valve body (211). A sealing ring (213) is sleeved at the connection between the valve body (211) and the valve core (212). One end of the valve core (212) is fixedly connected to one end of the support spring (214), and the other end of the support spring (214) is fixedly connected to the side of the valve body (211) opposite thereto.

2. The air reverse flow device of the stabilizer of a rotary drill rig according to claim 1, characterized in that: The one-way valve adjusting screw (23) is threadedly connected to the threaded hole (3).

3. The air reverse flow device for the stabilizer of the rotary drill rig according to claim 1, characterized in that: A suspension ring (223) is fixedly installed at the end of the first connecting rod (222) away from the spring body (221), and the suspension ring (223) is connected to the one-way valve adjusting screw (23).

4. A blast air reverse flow device for a stabilizer of a rotary drill, characterized in that: An assembly plate (227) is fixedly installed at the end of the second connecting rod (224) away from the spring body (221), and two symmetrically arranged assembly holes (228) are provided on the surface of the assembly plate (227).

5. The air reverse flow device of the stabilizer of the rotary drill rig according to claim 1, wherein: A gasket (229) is slidably connected to the middle of the second connecting rod (224). Screws (225) are threadedly connected to both sides of the top of the gasket (229). The tops of the two screws (225) are rotatably connected to suction cups (226), and one ends of the two suction cups (226) away from the screws (225) are connected to the side of the one-way valve body (21) opposite thereto.

6. The air reverse flow device of the stabilizer of a rotary drill rig according to claim 1, characterized in that: Sleeve nuts (215) are installed at both ends of the valve body (211) at a high position. Nuts (217) extending to the outside are threadedly connected inside the two sleeve nuts (215). Connecting springs (216) are fixedly installed on the opposite sides of the two nuts (217), and one ends of the two connecting springs (216) away from the nuts (217) are fixedly connected to the sides of the sleeve nuts (215) opposite thereto.

7. The air reverse flow device of the stabilizer for a rotary drill rig according to claim 6, characterized in that: One end of one of the nuts (217) is connected to the spring connecting piece (22).

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