CN220434671U - Screw drilling tool with pressure limiting protection function - Google Patents
Screw drilling tool with pressure limiting protection function Download PDFInfo
- Publication number
- CN220434671U CN220434671U CN202321746457.8U CN202321746457U CN220434671U CN 220434671 U CN220434671 U CN 220434671U CN 202321746457 U CN202321746457 U CN 202321746457U CN 220434671 U CN220434671 U CN 220434671U
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- drilling tool
- screw drilling
- fixedly connected
- pressure limiting
- assembly
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- 238000005553 drilling Methods 0.000 title claims abstract description 54
- 238000009434 installation Methods 0.000 claims description 27
- 238000013016 damping Methods 0.000 claims description 21
- 230000003139 buffering effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 abstract description 4
- 230000035939 shock Effects 0.000 description 13
- 239000006096 absorbing agent Substances 0.000 description 10
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a screw drilling tool with a pressure limiting protection function, and relates to the technical field of screw drilling tools. According to the utility model, the bypass valve unit is arranged, when the pump pressure rises, the valve core moves downwards, so that the first through hole and the second through hole are staggered, and in a closed state, the bypass valve is in a closed state, so that slurry enters the driving motor, the pressure difference is reduced, and then the screw drilling tool can be driven to normally work.
Description
Technical Field
The utility model relates to the technical field of screw drilling tools, in particular to a screw drilling tool with a pressure limiting protection function.
Background
The screw drilling tool is a volumetric underground power drilling tool which uses drilling fluid as power and converts the pressure energy of the drilling fluid into mechanical energy. When mud pumped by the mud pump flows through the bypass valve to enter the motor, a certain pressure difference is formed between the inlet and the outlet of the motor, the rotor is pushed to rotate around the axis of the stator, and the rotating speed and the torque are transmitted to the drill bit through the universal shaft and the transmission shaft, so that drilling operation is realized.
In the prior art, a Chinese patent document with publication number of CN207776819U and publication date of 2018, 8 and 28 is proposed to solve the above technical problems, and the technical scheme disclosed in the patent document is as follows: a screw drilling tool with a pressure limiting protection function comprises a stator, a rubber bushing and a hollow rotor; the upper end of the hollow rotor is connected with a hollow anti-falling pull rod, the upper end of the stator is connected with an anti-falling valve body, and the hollow anti-falling pull rod is arranged in the anti-falling valve body; the outer circular surface of the hollow anti-falling pull rod is sleeved with a baffle ring, an anti-falling check ring is arranged between the baffle ring and the hollow rotor in the anti-falling valve body, and the outer diameter of the baffle ring is larger than the inner diameter of the anti-falling check ring; the baffle ring is provided with a plurality of flow holes, and the distance from the flow holes to the center of the baffle ring is smaller than the inner diameter of the anti-drop check ring; the upper end of the hollow drop-proof pull rod is provided with a drain valve. The utility model can ensure the stable performance and efficiency of the screw drilling tool and prolong the service life of the screw drilling tool.
In order to solve the problem that the valve body is easy to be blocked in the use process of the screw drilling tool, so that mud cannot flow into the motor, the prior art is to set a pressure relief valve to relieve pressure, when the valve body is used for relieving pressure, the valve core is extruded under the action of the spring, so that the mud flows into the screw drilling tool, impurities in the mud are easy to block the spring, the valve core cannot move, and the operation of the screw drilling tool is further not facilitated.
Disclosure of Invention
The utility model provides a screw drilling tool with a pressure limiting protection function, which aims to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a screw rod drilling tool with pressure limiting protect function, includes the barrel, the inside upper end fixed mounting of barrel has the bypass valve unit, screw rod drilling tool drive unit is installed to bypass valve unit bottom, screw rod drilling tool drive unit's bottom fixed mounting has damping device, damping device bottom side fixed mounting has drill bit dismounting device.
The bypass valve unit comprises a valve body, the outer surface of the valve body is fixedly connected with the upper end inside the cylinder body, a first through hole is formed in the left side and the right side of the lower portion of the valve body, a valve core is slidably connected with the inner wall above the valve body, a second through hole is formed in the left side and the right side below the valve core, and a spring is arranged on the outer wall of the valve core.
In the technical scheme, when the pump pressure is increased, the valve core moves downwards, so that the first through hole and the second through hole are staggered and are in a closed state, the bypass valve is in a closed state, mud enters the driving motor to drive the screw drilling tool to work, the spring is arranged in a sealed space, the spring is prevented from being clamped, and the operation of the screw drilling tool is ensured.
The damping device comprises a supporting frame assembly, wherein the supporting frame assembly is arranged at the bottom of the screw drilling tool driving unit, and a buffering damping assembly is arranged in the supporting frame assembly.
The drill bit dismounting device comprises an installation connecting component, wherein the installation connecting component is arranged at the bottom of the buffering and damping component, and the drill bit component is installed below the installation connecting component through threads.
The technical scheme of the utility model is further improved as follows: the edge of the top of the valve core is fixedly connected with a sealing ring, and the top of the valve core through groove is fixedly connected with a filter screen.
Among the above-mentioned technical scheme, the sealing washer of setting can improve the leakproofness of valve body, and the filter screen of setting can filter some impurity that make the hollow channel plug.
The technical scheme of the utility model is further improved as follows: the screw drilling tool driving unit comprises a driving motor which is fixedly connected to the bottom of the valve body, the output end of the driving motor is fixedly connected with a universal shaft, and the bottom side of the universal shaft is fixedly connected with a transmission shaft.
The technical scheme of the utility model is further improved as follows: the supporting frame assembly comprises a supporting frame, the top of the supporting frame is fixedly connected with the bottom of the transmission shaft, sliding grooves are formed in the inner walls of the left end and the right end of the supporting frame, and sliding blocks are slidably connected to the inner walls of the sliding grooves.
The technical scheme of the utility model is further improved as follows: the buffering and damping assembly comprises a damper which is embedded in the top of the supporting frame, a supporting plate is embedded in the bottom of the damper, and the outer walls of the left end and the right end of the supporting plate are fixedly connected with the outer wall of one side of the sliding block.
In the above-mentioned technical scheme, the vibrations that it produced make the spring in the bumper shock absorber by the extrusion for the slider of backup pad both sides removes in the spout, weakens the vibrations that will receive through the bumper shock absorber, and then can protect the normal operation of internals and drill bit.
The technical scheme of the utility model is further improved as follows: the installation connecting assembly comprises an installation column, the top of the installation column is fixedly connected with the bottom of the supporting plate, an installation groove is formed in the bottom side of the installation column, a first threaded hole is formed in the front and the back of the installation groove, and a bolt is connected with the first threaded hole in an internal threaded mode.
The technical scheme of the utility model is further improved as follows: the drill bit assembly comprises a mounting block, the outer wall of the mounting block is in sliding connection with the inner wall of the mounting groove, a second threaded hole is formed in the front and the rear of the mounting block, the bolt penetrates through the second threaded hole, and a drill bit is fixedly connected to the bottom of the mounting block.
According to the technical scheme, when the drill bit is required to be disassembled and replaced due to abrasion after the screw operation is completed, the bolts are screwed out of the first threaded hole and the second threaded hole, so that the drill bit is disassembled from the inside, and a new drill bit is replaced.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
1. the utility model provides a screw drilling tool with a pressure limiting protection function, a bypass valve unit is arranged on the device, when a pump pressure rises, a valve core moves downwards, so that a first through hole and a second through hole are staggered, and in a closed state, the bypass valve is in a closed state, so that slurry enters a driving motor, the pressure difference is reduced, the screw drilling tool can be driven to work normally, a filter screen is arranged on a through groove at the top of the valve core, impurities which cause a hollow channel to be blocked can be filtered, the spring is arranged in a sealed space, the spring is prevented from being clamped, and the operation of the screw drilling tool is ensured.
2. The utility model provides a screw drilling tool with a pressure limiting protection function, and a damping device is arranged, so that huge vibration generated by the screw drilling tool during operation can be relieved through a supporting frame component and a buffering damping component, damage to internal parts is avoided, the damping effect is good, the generated vibration enables springs in the damper to be extruded, sliding blocks on two sides of a supporting plate move in a sliding groove, the vibration received by the damper is weakened, and then the internal parts and the normal operation of a drill bit can be protected.
3. The utility model provides a screw drilling tool with a pressure limiting protection function, wherein a drill bit dismounting device is arranged on the screw drilling tool, and a worn drill bit can be dismounted and replaced through a mounting connection assembly and a drill bit assembly, and the drill bit and a mounting column are connected through bolts, so that the screw drilling tool is stable in connection and convenient to dismount.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1 according to the present utility model;
FIG. 3 is a schematic view of the bypass valve unit of FIG. 2 according to the present utility model;
FIG. 4 is a schematic view of the shock absorbing device of FIG. 2 according to the present utility model;
fig. 5 is a schematic structural view of the bit dismounting device of fig. 2 according to the present utility model.
In the figure: 1. a cylinder; 2. a bypass valve unit; 3. a screw drill driving unit; 4. a damping device; 5. a drill bit dismounting device; 21. a valve body; 22. a first through hole; 23. a valve core; 24. a second through hole; 25. a filter screen; 26. a seal ring; 27. a spring; 31. a drive motor; 32. a universal shaft; 33. a transmission shaft; 41. a support frame assembly; 42. a cushioning shock absorbing assembly; a1, a supporting frame; a2, a chute; a3, a sliding block; b1, a shock absorber; b2, supporting the plate; 51. installing a connecting component; 52. a drill bit assembly; c1, mounting columns; c2, a first threaded hole; c3, a bolt; c4, a mounting groove; d1, a drill bit; d2, installing blocks; d3, a threaded hole II.
Detailed Description
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a screw rod drilling tool with pressure limiting protect function, includes barrel 1, and the inside upper end fixed mounting of barrel 1 has bypass valve unit 2, and screw rod drilling tool drive unit 3 is installed to bypass valve unit 2 bottom, and the bottom fixed mounting of screw rod drilling tool drive unit 3 has damping device 4, and damping device 4 downside fixed mounting has drill bit dismounting device 5.
In this embodiment, the bypass valve unit 2 includes a valve body 21, the outer surface of the valve body 21 is fixedly connected with the upper end inside the cylinder 1, a first through hole 22 is formed on the left and right sides below the valve body 21, a valve core 23 is slidably connected to the inner wall above the valve body 21, a second through hole 24 is formed on the left and right sides below the valve core 23, a spring 27 is arranged on the outer wall of the valve core 23, a sealing ring 26 is fixedly connected to the edge of the top of the valve core 23, a filter screen 25 is fixedly connected to the top of the through groove of the valve core 23, the bypass valve unit 2 is installed on the device, when the pump pressure rises, the valve core 23 moves downwards, so that the first through hole 22 and the second through hole 24 are staggered, and in a closed state, the bypass valve is in a closed state, so that slurry enters a driving motor 31, the pressure difference is reduced, and then a screw drilling tool can be driven to work normally, the filter screen 25 is arranged on the top through groove of the valve core 23, impurities which can be blocked by the hollow channel can be filtered, and the spring 27 is arranged in a sealed space, so that the clamping in the spring 27 is avoided, and the screw drilling tool is ensured.
Preferably, the screw drill driving unit 3 includes a driving motor 31, the driving motor 31 is fixedly connected to the bottom of the valve body 21, the output end of the driving motor 31 is fixedly connected to a universal shaft 32, and the bottom side of the universal shaft 32 is fixedly connected to a transmission shaft 33.
Further alternatively, the damping device 4 includes the braced frame subassembly 41, the braced frame subassembly 41 sets up in the bottom of screw drilling tool drive unit 3, install buffering damper 42 in the braced frame subassembly 41, braced frame subassembly 41 includes braced frame a1, braced frame a1 top and transmission shaft 33 bottom fixed connection, spout a2 has all been seted up on the inner wall of both ends about braced frame a1, spout a2 inner wall all sliding connection has slider a3, buffering damper 42 includes bumper shock absorber b1, bumper shock absorber b1 all imbeds at braced frame a1 top, bumper shock absorber b1 bottom imbeds has backup pad b2, and on the outer wall of both ends about backup pad b2 with slider a3 one side outer wall fixed connection, the damping device 4 of installation, through braced frame subassembly 41 and buffering damper 42 of setting, can alleviate the huge vibrations that the screw drilling tool produced when the operation, avoid the damage of internals, the vibrations that it produced make the spring in the bumper shock absorber b1 be extruded, make slider a3 of backup pad b2 both sides remove in spout a2, through bumper shock absorber b1, and then the inside part that will receive can be protected and the normal operation of drill bit.
Further, the drill bit dismounting device 5 includes installation coupling assembling 51, installation coupling assembling 51 sets up in the bottom of buffering damper 42, install coupling assembling 51 below screw thread and install drill bit subassembly 52, installation coupling assembling 51 includes erection column c1, erection column c 1's top and backup pad b 2's bottom fixed connection, erection tank c4 has been seted up to erection column c1 bottom side, screw hole one c2 has been seted up around the erection tank c4, screw hole one c2 internal thread connection has bolt c3, drill bit subassembly 52 includes installation piece d2, installation piece d2 outer wall and erection tank c4 inner wall sliding connection, threaded hole two d3 have been seted up around the installation piece d2, and bolt c3 passes threaded hole two d3, installation piece d 2's bottom fixedly connected with drill bit d1 on the device, install drill bit dismounting device 5 through installation coupling assembling 51 and drill bit subassembly 52 that set up, be about to be connected through bolt c3 between drill bit d1 and the erection column c1, screw out from screw hole one c2 and two d3 internal screw out, thereby make the internal connection of drill bit d1, and the dismantlement is convenient.
The working principle of the screw drilling tool with the pressure limiting protection function is specifically described below.
As shown in fig. 1-5, when the pump pressure is raised, the valve core 23 is moved downwards, so that the first through hole 22 and the second through hole 24 are staggered, and in a closed state, the bypass valve is in a closed state, so that slurry enters the driving motor 31 to drive the screw drill to work, the drill bit d1 rotates to generate larger vibration force when contacting with rock, the generated vibration presses the springs in the shock absorber b1, the sliding blocks a3 on two sides of the supporting plate b2 move in the sliding groove a2, the shock received by the shock absorber b1 is weakened, and when the drill bit d1 is worn after the screw operation is finished and needs to be disassembled and replaced, the bolt c3 is screwed out from the threaded hole c2 and the threaded hole d3, so that the drill bit d1 is disassembled from the c1, and a new drill bit d1 is replaced.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (7)
1. The utility model provides a screw drilling tool with pressure limiting protect function, includes barrel (1), its characterized in that: the drilling tool is characterized in that a bypass valve unit (2) is fixedly arranged at the upper end inside the cylinder body (1), a screw drilling tool driving unit (3) is arranged at the bottom of the bypass valve unit (2), a damping device (4) is fixedly arranged at the bottom of the screw drilling tool driving unit (3), and a drill bit dismounting device (5) is fixedly arranged at the bottom side of the damping device (4);
the bypass valve unit (2) comprises a valve body (21), the outer surface of the valve body (21) is fixedly connected with the upper end of the inside of the cylinder body (1), a first through hole (22) is formed in the left side and the right side of the lower part of the valve body (21), a valve core (23) is slidably connected to the inner wall of the upper part of the valve body (21), a second through hole (24) is formed in the left side and the right side of the lower part of the valve core (23), and a spring (27) is arranged on the outer wall of the valve core (23);
the damping device (4) comprises a supporting frame assembly (41), the supporting frame assembly (41) is arranged at the bottom of the screw drilling tool driving unit (3), and a damping and damping assembly (42) is arranged in the supporting frame assembly (41);
the drill bit dismounting device (5) comprises an installation connecting assembly (51), the installation connecting assembly (51) is arranged at the bottom of the buffering and damping assembly (42), and a drill bit assembly (52) is installed below the installation connecting assembly (51) in a threaded mode.
2. The screw drilling tool with the pressure limiting protection function according to claim 1, wherein: the top edge of the valve core (23) is fixedly connected with a sealing ring (26), and the top of the through groove of the valve core (23) is fixedly connected with a filter screen (25).
3. The screw drilling tool with the pressure limiting protection function according to claim 1, wherein: the screw drilling tool driving unit (3) comprises a driving motor (31), the driving motor (31) is fixedly connected to the bottom of the valve body (21), the output end of the driving motor (31) is fixedly connected with a universal shaft (32), and the bottom side of the universal shaft (32) is fixedly connected with a transmission shaft (33).
4. A screw drilling tool with pressure limiting protection according to claim 3, wherein: the supporting frame assembly (41) comprises a supporting frame (a 1), the top of the supporting frame (a 1) is fixedly connected with the bottom of the transmission shaft (33), sliding grooves (a 2) are formed in the inner walls of the left end and the right end of the supporting frame (a 1), and sliding blocks (a 3) are slidably connected in the inner walls of the sliding grooves (a 2).
5. The screw drilling tool with the pressure limiting protection function according to claim 4, wherein: the buffering and damping assembly (42) comprises a damper (b 1), wherein the damper (b 1) is embedded in the top of the supporting frame (a 1), a supporting plate (b 2) is embedded in the bottom of the damper (b 1), and the outer walls of the left end and the right end of the supporting plate (b 2) are fixedly connected with the outer wall of one side of the sliding block (a 3).
6. The screw drilling tool with the pressure limiting protection function according to claim 5, wherein: the installation connecting assembly (51) comprises an installation column (c 1), the top of the installation column (c 1) is fixedly connected with the bottom of the supporting plate (b 2), an installation groove (c 4) is formed in the bottom side of the installation column (c 1), a threaded hole I (c 2) is formed in the front and the rear of the installation groove (c 4), and a bolt (c 3) is connected with the threaded hole I (c 2) in a threaded mode.
7. The screw drilling tool with the pressure limiting protection function according to claim 6, wherein: the drill bit assembly (52) comprises a mounting block (d 2), the outer wall of the mounting block (d 2) is in sliding connection with the inner wall of the mounting groove (c 4), a threaded hole II (d 3) is formed in the front and the rear of the mounting block (d 2), the bolt (c 3) penetrates through the threaded hole II (d 3), and a drill bit (d 1) is fixedly connected to the bottom of the mounting block (d 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321746457.8U CN220434671U (en) | 2023-07-05 | 2023-07-05 | Screw drilling tool with pressure limiting protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321746457.8U CN220434671U (en) | 2023-07-05 | 2023-07-05 | Screw drilling tool with pressure limiting protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220434671U true CN220434671U (en) | 2024-02-02 |
Family
ID=89690559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321746457.8U Active CN220434671U (en) | 2023-07-05 | 2023-07-05 | Screw drilling tool with pressure limiting protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220434671U (en) |
-
2023
- 2023-07-05 CN CN202321746457.8U patent/CN220434671U/en active Active
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