Anti-blocking drill bit for mudstone
By installing a one-way valve and a limit ring in the drill bit, water can flow in one direction during mudstone drilling, preventing mud and gravel from clogging the holes. This solves the problems of low drilling efficiency and drill bit wear, improves mine production efficiency, and reduces equipment costs.
Patent Information
- Application Number
- CN202520511131.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-22
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-22
AI Technical Summary
When drilling mudstone, mud and gravel can easily clog the drill rod, leading to reduced drilling speed and severe drill bit wear, thus increasing production costs.
An anti-clogging drill bit was designed, which uses an internally hollow drill bit body and connecting rod integrally formed, and is equipped with a one-way valve and a limit ring to ensure that the water flows in one direction and prevents the backflow of mud and gravel. The water is discharged through the top and side water outlets.
It effectively prevents drill pipe clogging, improves drilling efficiency, reduces drill bit wear, lowers equipment replacement frequency, and saves production costs.
Smart Images
Figure CN223824926U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a drill bit, in particular to a prevent clogging drill bit for mudstone. BACKGROUND
[0002] In the mine production process, the coal rock occurrence geological environment condition is complex and changeable, especially in the mine excavation work progress, the timely support after excavation is very important. However, the rock in weakly cemented soft rock stratum usually shows weak, disintegrates in water, cementation in water and other adverse characteristics affecting production mining, for example, the above adverse characteristics can make the mudstone disintegrate and mudify in water when drilling anchor rod and drilling anchor cable drilling operation, and the mudstone debris can be poured into the drill rod from the drill bit to cause the drill rod cavity to be blocked, the water flow cannot flow out, thereby greatly reducing the drilling speed, and the drill bit is seriously worn, which seriously reduces the mine production efficiency and increases the production equipment cost, therefore, a prevent clogging drill bit for mudstone is urgently needed. SUMMARY
[0003] In view of the above problems existing in the prior art, the utility model provides a prevent clogging drill bit for mudstone, and the mudstone debris cannot be poured into the drill rod from the drill bit to cause the drill rod cavity to be blocked.
[0004] To achieve the above purpose, the utility model provides the following technical scheme: including the drill bit head body and connecting rod that are hollow, the drill bit head body and connecting rod are integrally formed, the top surface and side surface of the drill bit head body are respectively provided with a plurality of top water outlet holes and side water outlet holes, further including a one-way valve and a limiting ring, the limiting ring is located in the interior of the drill bit head body and connected with the inner wall of the drill bit head body, a plurality of through holes are formed in the limiting ring, the one-way valve includes a valve seat, a steel ball and a spring, the valve seat is located in the interior of the connecting rod and connected with the inner wall of the connecting rod, the valve seat is hollow and the lower valve port is an inner conical port, the upper valve port is flush with the top end of the connecting rod, the steel ball is located in the interior of the valve seat, and the two ends of the spring are respectively connected with the steel ball and the limiting ring.
[0005] Further, the inner conical surface of the lower valve port is provided with a sealing gasket.
[0006] Further, the top water outlet hole and the side water outlet hole are both provided with a water outlet hole valve.
[0007] Further, the inner wall of the connecting rod below the one-way valve is provided with an inner threaded port.
[0008] Further, the limiting ring is located below or above the side water outlet hole to prevent the limiting ring from interfering with the water flow.
[0009] Compared with the prior art, the utility model discloses the one-way valve is arranged in the water channel of connecting rod, makes water flow only one -way inflow and can not reverse backflow, solved when the soft weak rock layer hole of drilling mudstone etc. and water disintegrating softening, the water and slurry backflow into the drill bit water channel and make the drill bit and drill pipe jam, cause water flow to surge greatly reduce even complete jam, make the drilling work efficiency seriously reduce, simultaneously due to the loss of water flow makes the drill bit consumption wear aggravation key problem, guarantee the smooth progress of drilling work, reduce the equipment replacement of drill bit wear drill pipe jam, save the equipment cost of mine production, significantly improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0010] Fig. 1 It is the side view of the utility model;
[0011] Fig. 2 It is the perspective view of the utility model;
[0012] Fig. 3 It is the sectional view of the utility model;
[0013] In the drawing: 1, drill head body, 2, connecting rod, 3, top water hole, 4, sealing washer, 5, steel ball, 6, spring, 7, limit ring, 8, upper valve port, 9, valve seat, 10, one-way valve, 11, lower valve port, 12, internal thread port, 13, side water hole, 14, water hole valve. DETAILED DESCRIPTION
[0014] The utility model will be further described below in combination with the drawings.
[0015] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0016] As Figs. 1 to 3 The utility model provides a technical scheme: including inside hollow drill head body 1, connecting rod 2, one-way valve 10 and limit ring 7, drill head body 1 and connecting rod 2 are integrally formed, the top surface, side of drill head body 1 is equipped with a plurality of top water hole 3, side water hole 13 respectively, in order to improve the effect of preventing block, and top water hole 3 and side water hole 13 are equipped with water hole valve 14 in.
[0017] The limiting ring 7 is located inside the drill bit body 1 and connected to the inner wall of the drill bit body 1. Several through holes are formed on the limiting ring 7. The one-way valve 10 includes a valve seat 9, a steel ball 5, and a spring 6. The valve seat 9 is located inside the connecting rod 2 and connected to the inner wall of the connecting rod 2. The valve seat 9 is hollow inside, and its lower valve port 11 is an inner conical opening. The upper valve port 8 is flush with the top of the connecting rod 2. The steel ball 5 is located inside the valve seat 9. The two ends of the spring 6 are connected to the steel ball 5 and the limiting ring 7, respectively. An internal threaded port 12 is provided on the inner wall of the connecting rod 2 below the one-way valve 10 for connecting the drill pipe.
[0018] like Fig. 3 As shown, the drill bit body 1 and connecting rod 2 are integrally formed and hollow inside, which serves as the water flow channel. Under normal conditions, water flows from the connecting rod 2 to the drill bit body 1, and finally flows out from the top water outlet 3 and side water outlet 13 on the top and side surfaces of the drill bit body 1. A one-way valve 10 is installed inside the connecting rod 2. In conjunction with the one-way valve 10, a limiting ring 7 is installed inside the drill bit body 1. Without external force, the spring 6 presses down on the steel ball 5, making the steel ball 5 tightly adhere to the inner conical surface of the lower valve port 11. To improve the sealing effect, a sealing gasket 4 is provided on the inner conical surface of the lower valve port 11. After the one-way valve 10 is installed, the water first flushes... The top steel ball 5 overcomes the elastic force of the spring 6, causing the steel ball 5 to separate from the inner conical surface of the lower valve port 11. Then, the water flows in through the lower valve port 11 and then flows into the drill bit body 1 through the upper valve port 8. Finally, it flows out from the top water outlet 3 and the side water outlet 13 on the top and side surfaces of the drill bit body 1. After the water stops flowing, the steel ball 5 will again be tightly sealed to the inner conical surface of the lower valve port 11. Since the lower valve port 11 has an inner conical structure, the steel ball 5 can only move in one direction. Therefore, the water can only enter through the lower valve port 11 and flow out through the upper valve port 8, and cannot enter through the upper valve port 8 and flow out through the lower valve port 11. This achieves the purpose of unidirectional water flow.
[0019] Before drilling, the drill bit is screwed to the drill rod through the internal thread port 12. Then, the high-pressure water flow switch is turned on, and the water flows through the drill rod into the connecting rod 2. The water then flows to the lower valve port 11, where the steel ball 5 is lifted up by the force of the high-pressure water flow. The water flows in through the lower valve port 11 and out through the upper valve port 8, entering the drill bit body 1. At this time, the water outlet valve 14 is opened, and the water flows out from the top water outlet 3 and the side water outlet 13 on the top and side surfaces of the drill bit body 1, allowing for the next step of the operation.
[0020] After the work is completed, the high pressure water flow switch is closed, the steel ball 5 is again in contact with the inner conical surface of the lower valve port 11 under the elastic force of the spring 6 and is kept sealed by the sealing washer 4. If the drilling hole has a certain inclination, the mud and gravel in the hole wall will flow back into the drill bit under the driving of the residual water flow. Due to the presence of the one-way valve 10, the mud and gravel are temporarily stored in the valve seat 9 and the interior of the drill bit body 1. When drilling work is performed again, the high pressure water flow switch is opened, the water flow flows to the lower valve port 11, the steel ball 5 is lifted under the force of the high pressure water flow, and the mud and gravel stored during the previous work will be washed out under the force of the high pressure water flow. When slightly turbid water flow is seen flowing from the drill bit body 1, the next step of work can be performed.
[0021] If the drill bit equipment is worn due to long-term use, the connection between the spring 6 and the steel ball 5 or the limiting ring 7 is lost, and the steel ball 5 can be located at the lower valve port 11 under the action of gravity without high pressure water flow, so that the one-way valve 10 is in a naturally closed state. If the limiting ring 7 is also worn, the drill bit equipment can be replaced according to the specific situation.
[0022] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0023] The above is only a preferred embodiment of the present application and does not limit the present application. Any slight modification, equivalent replacement and improvement made according to the technical essence of the present application to the above embodiments should be included in the protection scope of the technical scheme of the present application.
Claims
1. A clog-resistant drill bit for use in mudstone, comprising a hollow drill bit body (1) and a connecting rod (2), wherein the drill bit body (1) and the connecting rod (2) are integrally formed, and the top and side surfaces of the drill bit body (1) are respectively provided with a plurality of top water outlet holes (3) and side water outlet holes (13); characterized in that, It also includes a check valve (10) and a limit ring (7); The limiting ring (7) is located inside the drill bit body (1) and connected to the inner wall of the drill bit body (1). Several through holes are opened on the limiting ring (7). The one-way valve (10) includes a valve seat (9), a steel ball (5) and a spring (6). The valve seat (9) is located inside the connecting rod (2) and connected to the inner wall of the connecting rod (2). The valve seat (9) is hollow inside and the lower valve port (11) is an inner conical port. The upper valve port (8) is flush with the top of the connecting rod (2). The steel ball (5) is located inside the valve seat (9). The two ends of the spring (6) are connected to the steel ball (5) and the limiting ring (7) respectively.
2. The anti-clogging drill bit for mudstone as described in claim 1, characterized in that: A sealing gasket (4) is provided on the inner conical surface of the lower valve port (11).
3. The anti-clogging drill bit for mudstone as described in claim 1, characterized in that: Both the top water outlet (3) and the side water outlet (13) are equipped with water outlet valves (14).
4. The anti-clogging drill bit for mudstone as described in claim 1, characterized in that: The inner wall of the connecting rod (2) below the one-way valve (10) is provided with an internal thread (12).
5. The anti-clogging drill bit for mudstone as described in claim 1, characterized in that: The limiting ring (7) is located below or above the side water outlet (13).