Novel drilling bit
By integrating diversion channels, jet channels, and drainage channels into the drill bit, high-pressure water flow is used to flush the borehole wall and discharge mud, solving the problems of drill bit overheating and clogging, and improving drilling efficiency.
Patent Information
- Application Number
- CN202520246432.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-17
AI Technical Summary
When drilling soft soil layers, the drill bit overheats due to frictional heat and the sprayed water flow causes mud to clog the water passages, affecting drilling efficiency.
A novel drilling bit is designed that integrates a diversion channel, a jet channel, a mud gate, and a discharge channel. It utilizes high-pressure water flow to flush the borehole wall and discharges mud through a one-way valve to prevent blockage.
It effectively reduces drill bit friction resistance, improves drilling efficiency, prevents mud blockage, and ensures normal drill bit operation.
Smart Images
Figure CN223707544U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of drilling tools, in particular to a novel drilling bit. BACKGROUND
[0002] Drilling or exploration is a mechanical engineering technology using deep drilling to exploit natural resources in the ground or the seabed, or to take the profile of the stratum, obtain solid samples, provide experiments to obtain relevant data, etc., according to different terrain, environment and actual situation, and determine the drilling method. At present, when drilling in soft soil, the drill bit needs to rotate back and forth to drill holes in the soft soil, and the deeper the drill bit drills in the soft soil, the greater the friction between the drill bit and the soil, which generates a large amount of friction heat, causing the drill bit to overheat. At this time, in order to prevent the drill bit from overheating and being damaged, water flow needs to be sprayed outward, and the high-speed water flow can impact and break the soil layer, especially for the soft soil layer with high viscosity, which can effectively reduce its strength, make the drill bit easier to cut in, soften the soil layer structure, and further improve the drilling efficiency. However, the mud produced by spraying water flow mixed with soft soil layer is easy to flow back into the drill bit, blocking the waterway, so the drill bit needs to be further improved. SUMMARY
[0003] Therefore, it is necessary to provide a novel drilling bit to solve the above problems.
[0004] A novel drilling bit, comprising a connecting part, a drill bit part and a drill bit body, the connecting part is detachably connected with the drill bit part and the drill bit body through the drill bit part, a shunt groove is arranged in the middle of the drill bit part, a shunt cone is arranged at the center of the bottom of the shunt groove, a plurality of shunt channels are uniformly and spacedly arranged around the shunt cone, the shunt channels are inclinedly and extendingly arranged to one end of the drill bit body, the shunt channels are used for connecting the shunt groove and a jet groove, a mud blocking grid is arranged at the slot opening of the jet groove, the mud blocking grid is inclined upward, a plurality of drainage channels are arranged on the drill bit part, the drainage channels are one-to-one connected with the jet groove, and a one-way valve is arranged in the drainage channel.
[0005] Preferably, a plurality of stepped platforms are arranged on the lower side of the shunt channel.
[0006] Preferably, a plurality of reaming teeth are arranged on the outer circumferential surface of the drill bit part along the axial direction, and the mud blocking grid is arranged between two adjacent reaming teeth.
[0007] Preferably, a guide tip is arranged at the top of the drill bit body, a plurality of scrapers are distributed around the guide tip, and a plurality of alloy teeth are welded on the surface of the scraper.
[0008] Preferably, the alloy teeth are made of tungsten steel.
[0009] Preferably, the number of said doctor blades is four.
[0010] The utility model discloses the advantage lies in: integrated water spraying function in the drill bit part, make high pressure water flow flush hole wall, make hole wall soft change, reduce the friction resistance that drill bit part received when drilling. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a new type of drilling drill bit three -dimensional schematic view for one embodiment;
[0012] Figure 2 It is a new type of drilling drill bit overhead schematic view;
[0013] Figure 3 It is Figure 2 It is A-A towards sectional schematic view. DETAILED DESCRIPTION
[0014] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0015] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is considered "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.
[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0017] As Figures 1-3As shown, a new drilling bit, comprising a connecting part 1, a bit part 2 and a bit body 3, the connecting part 1 is detachably connected with the bit part 2 and the bit body 3, a middle part of the bit part 2 is provided with a shunt groove 21, a bottom center of the shunt groove 21 is provided with a shunt cone 22, a plurality of shunt channels 23 are uniformly and spacedly arranged around the shunt cone 22, the shunt channels 23 are obliquely and extendingly arranged to one end of the bit body 3, the shunt channels 23 are used for connecting the shunt groove 21 and a jet groove 24, a mud baffle 25 is arranged at a slot opening of the jet groove 24, the mud baffle 25 is upwardly inclined, a plurality of drainage channels 26 are further arranged on the bit part 2, the drainage channels 26 are one-to-one corresponding to the jet groove 24, and a one-way valve 27 is arranged in the drainage channel 26. Specifically, in the embodiment, the connecting part 1 is used for connecting a transmission shaft (not shown in the figure), the bit part 2 is used as an intermediate connecting part for connecting the connecting part 1 and the bit body 3, and a water spraying function is integrated on the bit part 2, when the connecting part 1 drives the bit part 2 and the bit body 3 to drill downward, the bit part 2 and the bit body 3 rotate synchronously, at this time, an outer circumferential surface of the bit part 2 is in contact with a hole wall, high-pressure water flow is input to the shunt groove 21 through a pipeline, the high-pressure water flow passes through the shunt cone 22, is shunted, passes through the plurality of shunt channels 23, and is sprayed from the jet groove 24, so that the high-pressure water flow washes the hole wall, the hole wall is softened, the frictional resistance of the bit part 2 during drilling is reduced, and the drilling efficiency is improved. The shunt cone 22 is used for shunting the water flow in the shunt groove 21, the mud baffle 25 is arranged at the slot opening of the jet groove 24, and the mud baffle 25 is upwardly inclined, so that the mud baffle 25 can block the soil when the bit part 2 drills downward, the soil is prevented from blocking the slot opening of the jet groove 24, the water flow can normally wash the hole wall, and the soil is softened. Meanwhile, a corresponding drainage channel 26 is further arranged corresponding to each jet groove 24, the drainage channel 26 is located below the jet groove 24, and the one-way valve 27 is arranged in the drainage channel 26. Under normal working conditions, when the jet groove 24 sprays water flow outward, the water flow can be simultaneously sprayed from the one-way valve 27 and the mud baffle 25 at this time, when there is no water flow sprayed outward, the one-way valve 27 is closed, and the external mud is prevented from entering the jet groove 24 from the one-way valve 27. Only part of the mud enters the jet groove 24 through the mud baffle 25 at this time, because the shunt channels 23 extend outwardly from the shaft center, the mud is discharged from the drainage channel 26 through the one-way valve 27 under the action of its own gravity, and the mud is prevented from blocking the jet groove 24 and the shunt channels 23.
[0018] As Figure 3 shown, a plurality of stepped platforms 231 are arranged on the lower side of the shunt channel 23. Specifically, the stepped platforms 231 are used for blocking the deposited mud, and the particles in the mud are prevented from spreading into the shunt groove 21 under the action of the water flow.
[0019] As Figures 1-3As shown, the outer circumferential surface of the drill bit 2 is provided with a plurality of reaming teeth 28 along its axial direction, and the mudguard 25 is disposed between two reaming teeth 28. Specifically, in this embodiment, the reaming teeth 28 can be used to increase the borehole diameter, and the mudguard 25 is disposed between the reaming teeth 28 so that the outer surface of the mudguard 25 does not directly contact the borehole wall, and the water flow it sprays can directly act on the borehole wall to soften the soil.
[0020] like Figures 1-3 As shown, the top of the drill bit body 3 is provided with a guide tip 31, and several scrapers 32 are distributed around the guide tip 31. Several alloy teeth 33 are welded to the surface of each scraper 32. Specifically, the guide tip 31 guides the drill bit to drill in a straight line, preventing borehole deviation. The alloy teeth 33 are made of tungsten steel and have a hardened surface treatment to improve their wear resistance and service life. There are four scrapers 32 in total.
[0021] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A novel drill bit for drilling, characterized by: The utility model provides drilling head, including connecting portion, drill bit and drill bit body, connecting portion is detachable connection through drill bit and drill bit body, the middle part of drill bit is provided with the diversion groove, the bottom center position of diversion groove is provided with the diversion cone, a plurality of diversion channels are evenly spaced and are arranged around diversion cone, diversion channel is inclined extension setting to the one end of drill bit body, diversion channel is used to communicate diversion groove with injection groove, the notch of injection groove is provided with the fender, the fender is inclined upwards, drill bit is still provided with a plurality of drainage channels, drainage channel one to one is communicated with injection groove, and one-way valve is arranged in drainage channel.
2. A novel drill bit for drilling as claimed in claim 1, characterized in that: The lower side of the diversion channel is provided with a plurality of stepped platforms.
3. A novel drill bit for drilling as claimed in claim 1, wherein: The outer circumferential surface of the drill bit is provided with a plurality of reaming teeth along the axial direction thereof, and the fender is arranged between two adjacent reaming teeth.
4. A novel drill bit for drilling as claimed in claim 1, wherein: The top of the drill bit body is provided with a guide tip, and a plurality of scrapers are distributed around the guide tip. The surface of the scraper is welded with a plurality of alloy teeth.
5. A novel drill bit for drilling as claimed in claim 4, wherein: The alloy teeth are made of tungsten steel.
6. A novel drill bit for drilling as claimed in claim 4, wherein: The number of scrapers is four.