CN214463922U - State switching structure for mining drill bit - Google Patents
State switching structure for mining drill bit Download PDFInfo
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- CN214463922U CN214463922U CN202120364448.7U CN202120364448U CN214463922U CN 214463922 U CN214463922 U CN 214463922U CN 202120364448 U CN202120364448 U CN 202120364448U CN 214463922 U CN214463922 U CN 214463922U
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Abstract
The utility model discloses a state switching structure for a mining drill bit, which comprises a sliding tube, a gland, a mandril and a slide block; the sliding tube is used for reciprocating movement along the axis of the sliding tube together with the gland so as to switch between two states of non-contact or contact between the second limiting surface of the gland and the sealing surface of the sliding block, so that the outlet end of the sliding tube is opened for water flow to pass through or the outlet end of the sliding tube is closed, and the water flow flows back to the nozzle and is sprayed out; so that the water flow passes through the drill bit to carry out the drilling operation or the water flow is not reversely sprayed out by the nozzle through the drill bit to carry out the slotting operation.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment for the colliery, concretely relates to state switching structure for mining drill bit.
Background
The high-pressure water jet permeability-increasing outburst-preventing technology is widely applied to pavement cleaning, industrial rust removal, ammunition rust removal, oil well corrosion protection, metal and nonmetal plate cutting, jet grouting, pavement crushing, soybean protein separation crushing, coal mine gas extraction and the like. The domestic high-pressure water jet anti-reflection outburst prevention equipment is suitable for shallow outburst prevention gas drainage drilling; the drilling and cutting integrated drill bit is driven by the rotation of the drilling machine to cut, increase permeability and prevent outburst, the device cannot realize smooth switching between a drilling state and a slotting state of the drill bit, and the problem of high switching failure rate exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a state switching structure for mining drill bit uses with the drill bit cooperation, can be so that rivers can carry out the drilling operation through the drill bit, or rivers can be backward not carry out the slot operation by the nozzle blowout through the drill bit.
The utility model adopts the following technical scheme: a state switching structure for a mining drill bit, comprising:
the sliding pipe comprises a water inlet pipe and a water passing reversing pipe which are communicated, at least one nozzle is arranged on the outer wall of the water inlet pipe, and the axial direction of the nozzle is vertical to the axial direction of the water inlet pipe; the open end of the water inlet pipe is a water inlet of the sliding pipe, and the open end of the water passing reversing pipe is a water outlet of the sliding pipe;
the gland is of a hollow cylinder structure with two open ends, and the two ends of the gland are respectively a water inlet end and a water outlet end; the water inlet end of the gland is detachably and coaxially connected to the inside of the outlet of the water passing reversing pipe; the water outlet end of the gland is provided with a first limiting surface, and the water inlet end of the gland is provided with a second limiting surface;
the ejector rod coaxially extends into the water passing reversing pipe through the gland and is detachably connected to the water inlet side of the drill bit;
the slide block is movably arranged in the cavity of the water passing reversing pipe and is used for reciprocating in the water passing reversing pipe; one side of the upper part close to the gland is provided with a sealing surface, and the side surface of the sliding block is provided with a water path for water flow to pass through; the water-passing reversing pipe is used for being in contact with the ejector rod when high-pressure water or low-pressure water is introduced into the water-passing reversing pipe;
The sliding tube is used for reciprocating movement along the axis of the sliding tube together with the gland, so that the second limiting surface of the gland is not in contact with or is in contact with the sealing surface of the sliding block, the outlet end of the sliding tube is opened for water to pass through, or the outlet end of the sliding tube is closed, and water flows back to the nozzle to be sprayed out.
Furthermore, a step is arranged at one end of the water passing reversing pipe, which is far away from the gland; and the step is used for sealing the slider moving away from the direction of the ejector rod and limiting the suck-back prevention.
Furthermore, the second limiting surface of the gland and the sealing surface of the sliding block are both conical surfaces and are used for realizing complete sealing when the second limiting surface of the gland and the sealing surface of the sliding block are in contact with each other.
Further, a nozzle mounting hole is formed in the sliding pipe, a nozzle is mounted in the nozzle mounting hole, the nozzle mounting hole is a blind hole, a plurality of water through holes are formed in the bottom of the nozzle mounting hole, and a nozzle sealing ring and an anti-falling clamp spring are mounted at the connection position of the nozzle and the sliding pipe respectively.
Further, the slider includes the sealed section of integrated connection and crosses the water section, and the sealed section is located the slider and is close to one side of ejector pin, and the sealed section is the round platform structure, and the side of sealed section is sealed face, crosses the water section and is the spline structure.
The utility model has the advantages that: through the matching use of the state switching structure for the mining drill bit and the drill bit, the water flow can be used for drilling operation through the drill bit, or the water flow can be reversely sprayed out from the nozzle to perform slotting operation without passing through the drill bit, so that the switching of two working modes is realized; specifically, the outlet end of the sliding pipe is opened for water to pass through, or the outlet end of the sliding pipe is closed, and water flows back to the nozzle to be sprayed out. The two modes of operation have the advantage of allowing water to pass through the drill bit for drilling operations or allowing water to be ejected from the nozzle without passing through the drill bit in the reverse direction for slot cutting operations.
Drawings
Fig. 1 is a schematic structural diagram of a first working state of the state switching structure for the mining drill bit of the present invention;
fig. 2 is a schematic structural diagram of a second working state of the state switching structure for the mining drill bit of the present invention;
fig. 3 is a schematic structural view of the sliding tube of the state switching structure for the mining drill bit of the present invention;
fig. 4-1 is a schematic structural diagram of the gland of the state switching structure for the mining drill bit of the present invention;
fig. 4-2 is a schematic perspective view of the gland of the state switching structure for the mining drill bit of the present invention;
fig. 5 is a schematic structural view of the slider of the state switching structure for the mining drill bit of the present invention;
fig. 6 is an enlarged schematic view of a portion a of fig. 2.
The water-saving type water-saving spray nozzle comprises a water inlet pipe 1, a water inlet pipe 2, an ejector rod 8, a gland 9, a sliding block 11, a spray nozzle 12, a spray nozzle sealing ring 13, a spray nozzle clamping spring 14, a water passing reversing pipe 14, a first limiting surface 15, a second limiting surface 16, a sealing surface 17, a step 18, a sealing section 9-1, a water passing section 9-2, a spray nozzle mounting hole 23 and a water passing hole 25.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a state switching structure for mining drill bit, as shown in fig. 1-6, including the inlet tube 1 of coaxial setting and cross water switching-over pipe 14, its inside link up and form water channel. It also comprises a mandril 2, a gland 8, a slide block 9 and a nozzle 11.
Wherein the carrier rod 2 is adapted to be detachably connected to the drill bit on a side remote from its outlet, as shown in fig. 3. The outer side of the sliding pipe is provided with a track structure for the sliding pipe to move back and forth.
As shown in figure 3, the water passing reversing pipe 14 is a section of cavity which is positioned on the sliding pipe and is close to one side of the mandril 2. As shown in fig. 4-1 and 4-2, the gland 8 is a hollow cylinder structure with two open ends, coaxially sleeved outside the ejector rod 2, and detachably mounted on the inner wall of the water passing reversing pipe 14 at one end close to the water passing reversing pipe 14; the gland 8 is used for limiting when the sliding pipe and the drill bit move oppositely, the end face, close to the drill bit, of the gland 8 is a first limiting face 15, and the end face, far away from the drill bit, of the gland 8 is a second limiting face 16.
As shown in fig. 1 and 2, the slide block 9 is movably arranged in the water passing reversing pipe 14 and used for reciprocating in the water passing reversing pipe 14 so as to switch between a state of contacting or not contacting with the ejector rod 2; on the side of which, close to the carrier rod 2, a sealing surface 17 is provided.
As shown in fig. 6, at least one nozzle 11 is vertically arranged on the outer wall of the sliding pipe and is close to the water inlet of the sliding pipe.
As shown in fig. 1, the sliding block 9 is used for moving to contact with the top rod 2 when low-pressure water is introduced, and a water passing gap is formed between the second limiting surface 16 and the sealing surface 17, so that a water outlet of the sliding pipe is opened. When the outlet end of the sliding pipe is open, the water introduced by the sliding pipe is led out through the side surface of the sliding block 9, the gap between the second limiting surface 16 and the sealing surface 17 and the outlet of the gland 8.
As shown in fig. 2, the slide block 9 is further configured to move to contact with the ram 2 and continue moving forward when introducing high-pressure water until the second limiting surface 16 contacts with the sealing surface 17 to close the water passing gap, and when the outlet end of the sliding pipe is closed, the high-pressure water introduced by the sliding pipe flows back to the gland 8 and is ejected out of the nozzle 11.
In some embodiments, a step 18 is arranged at one end of the water passing reversing pipe 14 far away from the installation position of the gland 8 and used for sealing and preventing suck-back of the sliding block 9 moving far away from the top rod 2.
In some embodiments, the second stop surface 16 of the gland 8 and the sealing surface 17 of the slider 9 are both tapered surfaces for complete sealing when in contact with each other.
In some embodiments, the sliding pipe is provided with a nozzle mounting hole 23, the nozzle 11 is mounted in the nozzle mounting hole 23, the nozzle mounting hole 23 is a blind hole, the bottom of the blind hole is provided with a plurality of water through holes 25, and the joint of the nozzle 11 and the sliding pipe is provided with a nozzle sealing ring 12 and an anti-falling clamp spring 13.
In some embodiments, the sliding block 9 comprises a sealing section 9-1 and a water passing section 9-2 which are integrally connected, the sealing section 9-1 is positioned on one side of the sliding block 9 close to the ejector rod 2, the sealing section 9-1 is in a circular truncated cone structure, the side surface of the sealing section 9-1 is a sealing surface, and the water passing section 9-2 is in a spline structure.
The utility model discloses a working method for state switching structure of mining drill bit, with the coaxial assembly of slide tube, gland 8 and ejector pin 2, arrange slider 9 in the water reversing tube 14 of crossing of slide tube again.
As shown in fig. 1, when low-pressure water is introduced, the sliding block 9 moves to contact with the top rod 2, and a water passing gap is formed between the second limiting surface 16 and the sealing surface 17, so that the water outlet of the sliding pipe is opened. When the outlet end of the sliding pipe is open, the water introduced by the sliding pipe is led out through the side surface of the sliding block 9, the gap between the second limiting surface 16 and the sealing surface 17 and the outlet of the gland 8.
As shown in fig. 2, when high-pressure water is introduced, the slide block 9 moves to be in contact with the mandril 2 and continues to move forwards until the second limiting surface 16 is in contact with the sealing surface 17 to close the water passing gap. When the outlet end of the sliding pipe is closed, the high-pressure water introduced by the sliding pipe flows back to the nozzle 11 to be ejected after reaching the gland 8.
The utility model discloses a cooperation that is used for state switching structure of mining drill bit and drill bit is used, through gland 8 the spacing face 16 of second with switch between the sealed face 17 contactless or the contact two kinds of states of slider 9 to realize the switching of two kinds of mode, specifically for the sliding tube exit end open the water supply flow pass through or the sliding tube exit end seals, the palirrhea spout of nozzle department of rivers. The two working modes are respectively drilling operation by making water flow pass through the drill bit or slotting operation by making the water flow not pass through the drill bit and be reversely sprayed out by the nozzle. The switching of the two working modes provides the possibility of realizing the integration of the drilling and slotting operations.
Claims (5)
1. A state switching structure for mining drill bit, characterized by, includes:
the water inlet pipe comprises a water inlet pipe (1) and a water passing reversing pipe (14), wherein the water inlet pipe and the water passing reversing pipe are communicated, at least one nozzle (11) is arranged on the outer wall of the water inlet pipe (1), and the axial direction of the nozzle (11) is vertical to the axial direction of the water inlet pipe (1); the open end of the water inlet pipe (1) is a water inlet of the sliding pipe, and the open end of the water passing reversing pipe (14) is a water outlet of the sliding pipe;
the gland (8) is of a hollow cylinder structure with two open ends, and the two ends are respectively a water inlet end and a water outlet end; the water inlet end of the gland (8) is detachably and coaxially connected to the inside of the outlet of the water passing reversing pipe (14); the water outlet end of the gland (8) is provided with a first limiting surface (15), and the water inlet end of the gland is provided with a second limiting surface (16);
the ejector rod (2) coaxially extends into the water passing reversing pipe (14) through the gland (8) and is detachably connected to the water inlet side of the drill bit;
the sliding block (9) is movably arranged in the cavity of the water passing reversing pipe (14) and is used for reciprocating in the water passing reversing pipe (14); a sealing surface (17) is arranged on one side of the sliding block (9) close to the gland (8), and a water path for water flow is arranged on the side surface of the sliding block; the water-passing reversing pipe (14) is used for keeping contact with the ejector rod (2) when high-pressure water or low-pressure water is introduced into the water-passing reversing pipe;
The sliding pipe is used for reciprocating movement together with the gland (8) along the axis of the gland so as to switch between a non-contact state or a non-contact state of a second limiting surface (16) of the gland (8) and a sealing surface (17) of the sliding block (9), so that the outlet end of the sliding pipe is opened for water to pass through, or the outlet end of the sliding pipe is closed, and water flows back to the nozzle to be sprayed out.
2. The state switching structure for the mining drill bit according to claim 1, characterized in that a step (18) is arranged at one end, far away from the gland (8), in the water passing reversing pipe (14); the step (18) is used for sealing the sliding block (9) moving away from the ejector rod (2) and limiting the anti-suck-back.
3. The state switching structure for mining drill bits according to claim 1 or 2, characterized in that the second limit surface (16) of the gland (8) and the sealing surface (17) of the slider (9) are both conical surfaces for achieving a complete sealing when in mutual contact.
4. The state switching structure for the mining drill bit according to claim 3, wherein the sliding pipe is provided with a nozzle mounting hole (23), a nozzle (11) is mounted in the nozzle mounting hole (23), the nozzle mounting hole (23) is a blind hole, the bottom of the blind hole is provided with a plurality of water through holes (25), and a nozzle sealing ring (12) and an anti-falling snap spring (13) are respectively mounted at the joint of the nozzle (11) and the sliding pipe.
5. The state switching structure for the mining drill bit according to claim 4, characterized in that the sliding block (9) comprises a sealing section (9-1) and a water passing section (9-2) which are integrally connected, the sealing section (9-1) is positioned on one side of the sliding block (9) close to the ejector rod (2), the sealing section (9-1) is of a circular truncated cone structure, the side surface of the sealing section (9-1) is a sealing surface, and the water passing section (9-2) is of a spline structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120364448.7U CN214463922U (en) | 2021-02-09 | 2021-02-09 | State switching structure for mining drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120364448.7U CN214463922U (en) | 2021-02-09 | 2021-02-09 | State switching structure for mining drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214463922U true CN214463922U (en) | 2021-10-22 |
Family
ID=78143379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120364448.7U Active CN214463922U (en) | 2021-02-09 | 2021-02-09 | State switching structure for mining drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214463922U (en) |
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2021
- 2021-02-09 CN CN202120364448.7U patent/CN214463922U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211215 Address after: 710032 yard 65, East Banjie lane, Xincheng District, Xi'an City, Shaanxi Province Patentee after: Zhang Xiaoyin Address before: No. 110, group 4, shuangluqiaocun, Dongguan, Chencang District, Baoji City, Shaanxi Province, 721000 Patentee before: Zhang Hui |
|
| TR01 | Transfer of patent right |