CN213510444U - Jet pressure adjustable cave making device - Google Patents
Jet pressure adjustable cave making device Download PDFInfo
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- CN213510444U CN213510444U CN202022566618.8U CN202022566618U CN213510444U CN 213510444 U CN213510444 U CN 213510444U CN 202022566618 U CN202022566618 U CN 202022566618U CN 213510444 U CN213510444 U CN 213510444U
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Abstract
A jet pressure adjustable cave-making device comprises a device body, wherein an axial inner cavity is arranged in the device body, a high-pressure water outlet is formed in the side surface of the device body and communicated with the axial inner cavity to form an outlet of a high-pressure water channel, a low-pressure water outlet is formed in one end, connected with a drill bit, of the device body and serves as an outlet of the low-pressure water channel, and a water inlet communicated with the axial inner cavity is formed in one end, connected with a drill rod, of the device body; the axial inner cavity is internally provided with a high-pressure and low-pressure channel switching mechanism to realize the switching of high-pressure and low-pressure water channels, the high-pressure and low-pressure channel switching mechanism comprises a spring seat and a piston capable of sliding relative to the spring seat, a spring is arranged in the spring seat, and the high-pressure and low-pressure water channel switching mechanism further comprises an adjusting mechanism for adjusting the pretightening force of the spring. This device is through adjusting the pretightning force adjustment of structure to the spring to the realization is to can communicateing high pressure water channel, opening the jet water pressure threshold value and adjust, with the requirement of making the cave under the different actual conditions of satisfying.
Description
Technical Field
The utility model belongs to colliery drilling equipment field, concretely relates to jet pressure adjustable cave making device.
Background
In order to improve the gas extraction rate, a method of cutting the coal wall by high-pressure water jet to increase the diameter of a drill hole is often adopted in a soft coal seam. But traditional hydraulic punching hole making equipment structure is complicated, and processing is difficult, and easily breaks down in the use, and life is short, and the pressure that the water jet opened is the fixed value in the use, can not adjust according to on-the-spot actual conditions. Against this background, there is a strong need for a new structure and new technology of hydraulic punching and hole-making equipment to solve these problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a jet pressure adjustable cave making device, the device is through adjusting the pretightning force adjustment of structure to the spring to the realization is to can communicateing high pressure water channel, opening the water pressure threshold value of efflux in order to cut the coal wall and adjust, in order to satisfy the requirement of making the cave under the different actual conditions.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a jet pressure adjustable cave-making device comprises a device body, wherein an axial inner cavity is arranged in the device body, a water inlet communicated with the axial inner cavity is formed in one end, connected with a drill rod, of the device body, a high-pressure water outlet is formed in the side face of the device body, the high-pressure water outlet is communicated with the axial inner cavity to form an outlet of a high-pressure water channel, and a low-pressure water outlet is formed in one end, connected with a drill bit, of the device body and serves as an outlet of the low-pressure water channel; a high-pressure and low-pressure channel switching mechanism is arranged in the axial inner cavity to realize the switching of high-pressure and low-pressure water channels; the high-pressure and low-pressure passage switching mechanism comprises a spring seat which is not moved in position and a piston which can slide relative to the spring seat, a water inlet passage is arranged in the piston, the water inlet end of the water inlet passage is communicated with the water inlet, the outer wall of the piston is attached to the inner wall of the axial inner cavity, and the inner wall of the piston is attached to the outer wall of the spring seat; the spring seat is provided with a seat cavity communicated with the water inlet channel, a water passing gap is reserved between the spring seat and the inner wall of the axial inner cavity, and the water passing gap is communicated with the low-pressure water outlet; the piston is provided with a first through hole which is communicated with the water inlet channel and the high-pressure water outlet to form the high-pressure water channel, a second through hole which is positioned on the piston or on the spring seat is arranged in the relative movement range of the piston and the spring seat, and the water inlet channel or the seat cavity is communicated with the water passing gap through the second through hole and then forms the low-pressure water channel with the low-pressure water outlet; the piston is supported by a spring arranged on the spring seat, the spring seat is also provided with an adjusting mechanism, and the adjusting mechanism adjusts the pressure threshold value required by the communication of the high-pressure water channel through adjusting the pretightening force of the spring.
The device body comprises a shell and a connector which are in threaded connection, a sealing structure is arranged between the end faces of the connecting parts of the shell and the connector, the water inlet is arranged at the end part of the shell, and the low-pressure water outlet is arranged at the end part of the connector.
The second through hole is arranged on the piston and extends along the radial direction of the piston.
The second through hole is formed in the spring seat and extends in the radial direction of the spring seat.
The adjusting mechanism comprises an adjusting bolt and a sliding block, the sliding block is arranged in a seat cavity of the spring seat in a sliding mode, the spring is fixed on the sliding block, the adjusting bolt is in threaded connection with a bottom plate of the spring seat, and the adjusting bolt penetrates through the bottom plate of the spring seat to be abutted to the sliding block.
The bottom plate of the spring seat is a triangular flange, and the corner of the bottom plate is propped against the limiting boss of the axial inner cavity.
The high-pressure water outlet comprises an annular groove and a plurality of water spraying holes, the annular groove is arranged around the piston, the inner edge of the annular groove is opened on the inner wall of the shell, the plurality of water spraying holes are uniformly distributed on the periphery of the annular groove, one end of each water spraying hole is communicated with the annular groove, and the other end of each water spraying hole extends along the radial direction of the shell and penetrates through the side wall of the shell.
And a spray head is arranged in the water spray hole.
The first through hole extends in the radial direction of the piston.
The utility model has the advantages that: the utility model has simple structure and convenient assembly and disassembly, when the water pressure is larger, the piston is pushed, so as to connect the high-pressure water channel and cut off the low-pressure water channel, so that the high-pressure water is ejected from the spray head at high speed, and the coal wall can be cut and reamed; when the water pressure is low and is not enough to overcome the elastic force of the spring, the spring pushes the piston, so that the high-pressure water channel is cut off, and the low-pressure water channel is opened, so that water flows out from the low-pressure water outlet and can be used for punching and deslagging.
The utility model discloses in can adjust the pretightning force of spring through adjustment mechanism to increase or reduce the opening pressure that corresponds when high pressure water channel is opened satisfies the required different hydraulic requirements of coal wall cutting and drill bit cooling when making the cave.
Drawings
Fig. 1 is a schematic structural view of the present invention in embodiment 1;
fig. 2 is a schematic structural view of a second through hole arrangement manner in embodiment 2;
the labels in the figure are: 1. the water supply device comprises a shell, 2, a piston, 3, a spring seat, 4, a connector, 5, a water inlet, 6, a water inlet channel, 7, a first through hole, 8, an annular groove, 9, a spray head, 10, a second through hole, 11, a seat cavity, 12, a spring, 13, a sliding block, 14, an adjusting bolt, 15, a low-pressure water outlet, 16, a sealing ring, 17 and a water passing gap.
Detailed Description
The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.
Example 1: referring to the attached figure 1, the device body of the device comprises a hollow shell 1 and a hollow connector 4 which are connected by threads, and a sealing ring 16 is arranged on the end surface of the joint of the shell 1 and the connector 4 to form a sealing structure. The one end of keeping away from connector 4 on the casing 1 is equipped with water inlet 5 to be connected with the drilling rod when using, the one end of keeping away from casing 1 on connector 4 is equipped with low pressure water delivery port 15, and is connected with the drill bit when using, the inside axial inner chamber that communicates each other that is equipped with of casing 1 and connector 4, in order to connect water inlet 5 and low pressure water delivery port 15. And a high-pressure water outlet is formed in the side surface of the shell 1 along the circumference and is communicated with the axial inner cavity to form an outlet of a high-pressure water channel, and the low-pressure water outlet 15 is used as an outlet of a low-pressure water channel. And a high-pressure and low-pressure passage switching mechanism is arranged in the axial inner cavity to realize the switching of high-pressure and low-pressure water passages. The high-pressure water outlet comprises an annular groove 8 and a plurality of water spraying holes, the annular groove 8 is arranged around the piston 2, the inner edge of the annular groove 8 is opened on the inner wall of the shell 1, the plurality of water spraying holes are uniformly distributed on the periphery of the annular groove 8, one end of each water spraying hole is communicated with the annular groove, the other end of each water spraying hole extends along the radial direction of the shell 1 to penetrate through the side wall of the shell 1, and a spray head 9 can be further installed in each.
As a variant, the axial direction of the water jet holes and the radial direction of the housing 1 may be offset by an angle, so that the water jet is emitted obliquely.
High low pressure passageway switching mechanism includes the motionless spring holder 3 of a position and can be for the gliding piston 2 of spring holder 3, 2 inside inhalant canal 6 that is equipped with of piston, inhalant canal 6 intake end with 5 docks and the intercommunication of water inlet, spring holder 3 is equipped with hollow seat chamber 11, 11 one end in seat chamber is sealed by the bottom plate of spring holder, the other end with inhalant canal 6 communicates with each other, 2 slip cap of piston establish outside 11 in seat chamber of spring holder 3, be provided with spring 12 in the seat chamber 11 of spring holder 3, the adjustment mechanism on spring 12 one end and the 3 bottom plates of spring holder is connected, and the other end stretches out spring holder 3 and pushes up on the boss of the 6 inner walls of inhalant canal of piston 2, when not receiving external force, and spring 12 relies on compressed elasticity to push up piston 2 and spring holder 3 respectively at axial cavity's.
The formation of the high-pressure water channel: a plurality of first through holes 7 are formed in the piston 2, after the piston 2 moves rightwards (as shown in fig. 1), the first through holes 7 enter the range of the annular groove 8 in the high-pressure water outlet, the communication between the water inlet channel 6 and the high-pressure water outlet is realized, namely, the high-pressure water channel is formed, and when the piston 2 is located at other positions, the first through holes 7 are blocked by the inner wall of the axial inner cavity of the shell 1, and the high-pressure water channel is cut off.
When the high-pressure water channel is communicated, the piston 2 moves rightwards, and the low-pressure water channel is cut off, so that only one of the high-pressure water channel and the low-pressure water channel is ensured to be in a communicated state.
The formation of the low-pressure water passage: a water passing gap 17 is reserved between the spring seat 3 and the inner wall of the axial inner cavity, and the water passing gap 17 is communicated with the low-pressure water outlet 15; a plurality of second through holes 10 are provided on the piston 2 along its circumference. When the piston 2 slides towards the spring seat 3, the second through hole 10 can be plugged by the outer wall of the spring seat 3, or when the piston 2 slides away from the spring seat 3, the second through hole 10 is opened because of leaving the spring seat 3, the second through hole 10 communicates the water inlet passage 6 in the piston 2 with the water passing gap 17 outside the spring seat 3 after being opened, and then communicates with the low-pressure water outlet 15 of the connector 4, thereby forming a low-pressure water passage for communication.
The adjusting mechanism is mainly used for adjusting the pre-tightening force of the spring 12 and comprises an adjusting bolt 14 and a sliding block 13, the sliding block 13 is arranged in a seat cavity 11 of the spring seat 3 in a sliding mode, the spring 12 abuts against the sliding block 13, the adjusting bolt 14 is in threaded connection with a bottom plate of the spring seat 3, and the adjusting bolt 14 penetrates through the bottom plate of the spring seat 3 and abuts against the sliding block 13. By rotating the adjusting bolt 14, the sliding block 13 can be pushed to move left and right, the length of the spring 12 can be directly adjusted, and then the pre-tightening force of the spring 12 can be adjusted. When the sliding block 13 moves leftwards, the spring 12 is further compressed, the pretightening force is increased, and the piston 2 moves rightwards to overcome larger elastic force, so that higher water pressure is needed to push the piston to move rightwards so as to open the high-pressure water channel; similarly, when the slide block 13 moves rightwards, the pretightening force of the spring 12 is reduced, and the water pressure required for opening the high-pressure water channel is reduced. Therefore, the requirements of different use environments can be met.
Preferably, the bottom plate of the spring seat 3 is a triangular flange, and the corner of the bottom plate is pressed against the limit boss of the axial inner cavity.
Example 2: compared with the embodiment 1, the difference of the embodiment is that as shown in fig. 2, the second through holes 10 are arranged on the spring seat 3 and uniformly distributed along the circumferential direction of the position of the seat cavity 11 of the spring seat 3, when the piston 2 moves to the left, the second through holes 10 are exposed, the second through holes 10 are communicated with the seat cavity 11 of the spring seat 3 and the water gap 17, and further communicated with the low-pressure water outlet 15 of the connector 4, so that a communicated low-pressure water channel is formed. When the piston 2 moves to the right, the piston 2 can close the second through hole 10 and cut off the low-pressure water channel.
It should be noted that the sleeve length of the piston 2 and the spring seat 3, and the axial position of the first through hole 7 and the second through hole 10 need to satisfy the following conditions: when the piston 2 moves rightwards to the limit position, namely the piston 2 abuts against the bottom plate of the spring seat 3, the first through hole 7 is communicated with the annular groove 8, and the second through hole 10 is blocked; when the piston 2 moves to the limit position leftwards, namely the piston 2 moves to the water inlet 5, the second through hole 10 is separated from the spring seat 3 and is communicated with the water passing gap 17, and the first through hole 7 is blocked by the inner wall of the axial inner cavity of the shell 1.
The working process of the device for adjusting the jet pressure is described below by taking example 1 as an example: rivers get into the inhalant canal 6 of piston 2 from water inlet 5 to rivers act on the 2 terminal surfaces of piston, and when water pressure was greater than the spring 12 elasticity that piston 2 received, rivers promoted piston 2 and move to the right, make first through-hole 7 with ring channel 8 intercommunication, high pressure water channel switch-on this moment, rivers jet out at a high speed through the shower nozzle 9 of installation on the high pressure water outlet, cut the reaming to the coal wall on every side, and the water pressure numerical value this moment is exactly to open high pressure water channel or open fluidic pressure threshold. When the sliding block 13 is pushed to move left by the adjusting bolt 14, the length of the spring 12 is compressed, the elastic force is increased, and at this time, a larger water pressure is needed to push the piston 2 to move right against the elastic force of the spring 12, that is, the jet pressure threshold value is increased, and the significance is that: when the drill bit needs low-pressure water for cooling, if the water supply pressure is too high, the high-pressure water channel can be opened, and the low-pressure water channel can be closed, so that the drill bit cannot be supplied with cooling water and the damage is aggravated; however, after the adjusting bolt is adjusted, the jet pressure threshold value is increased, so that the water pressure cannot push the piston to move right, the smoothness of the low-pressure water channel can be ensured, and the cooling water supply to the drill bit is further ensured.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are all within the scope of the claims of the present application.
Claims (9)
1. A jet pressure adjustable cave-making device comprises a device body, wherein an axial inner cavity is arranged in the device body, a water inlet communicated with the axial inner cavity is formed in one end, connected with a drill rod, of the device body, a high-pressure water outlet is formed in the side face of the device body, the high-pressure water outlet is communicated with the axial inner cavity to form an outlet of a high-pressure water channel, and a low-pressure water outlet is formed in one end, connected with a drill bit, of the device body and serves as an outlet of the low-pressure water channel; a high-pressure and low-pressure channel switching mechanism is arranged in the axial inner cavity to realize the switching of high-pressure and low-pressure water channels; the method is characterized in that: the high-pressure and low-pressure passage switching mechanism comprises a spring seat which is not moved in position and a piston which can slide relative to the spring seat, a water inlet passage is arranged in the piston, the water inlet end of the water inlet passage is communicated with the water inlet, the outer wall of the piston is attached to the inner wall of the axial inner cavity, and the inner wall of the piston is attached to the outer wall of the spring seat; the spring seat is provided with a seat cavity communicated with the water inlet channel, a water passing gap is reserved between the spring seat and the inner wall of the axial inner cavity, and the water passing gap is communicated with the low-pressure water outlet; the piston is provided with a first through hole which is communicated with the water inlet channel and the high-pressure water outlet to form the high-pressure water channel, a second through hole which is positioned on the piston or on the spring seat is arranged in the relative movement range of the piston and the spring seat, and the water inlet channel or the seat cavity is communicated with the water passing gap through the second through hole and then forms the low-pressure water channel with the low-pressure water outlet; the piston is supported by a spring arranged on the spring seat, the spring seat is also provided with an adjusting mechanism, and the adjusting mechanism adjusts the pressure threshold value required by the communication of the high-pressure water channel through adjusting the pretightening force of the spring.
2. The adjustable jet pressure cavitation device of claim 1, wherein: the device body comprises a shell and a connector which are in threaded connection, a sealing structure is arranged between the end faces of the connecting parts of the shell and the connector, the water inlet is arranged at the end part of the shell, and the low-pressure water outlet is arranged at the end part of the connector.
3. The adjustable jet pressure cavitation device of claim 2, characterized in that: the second through hole is arranged on the piston and extends along the radial direction of the piston.
4. The adjustable jet pressure cavitation device of claim 2, characterized in that: the second through hole is formed in the spring seat and extends in the radial direction of the spring seat.
5. The adjustable jet pressure cavitation device of claim 3 or 4, characterized in that: the adjusting mechanism comprises an adjusting bolt and a sliding block, the sliding block is arranged in a seat cavity of the spring seat in a sliding mode, the spring abuts against the sliding block, the adjusting bolt is in threaded connection with a bottom plate of the spring seat, and the adjusting bolt penetrates through the bottom plate of the spring seat to abut against the sliding block.
6. The adjustable jet pressure cavitation device of claim 5, characterized in that: the bottom plate of the spring seat is a triangular flange, and the corner of the bottom plate is propped against the limiting boss of the axial inner cavity.
7. The adjustable jet pressure cavitation device of claim 5, characterized in that: the high-pressure water outlet comprises an annular groove and a plurality of water spraying holes, the annular groove is arranged around the piston, the inner edge of the annular groove is opened on the inner wall of the shell, the plurality of water spraying holes are uniformly distributed on the periphery of the annular groove, one end of each water spraying hole is communicated with the annular groove, and the other end of each water spraying hole extends along the radial direction of the shell and penetrates through the side wall of the shell.
8. The adjustable jet pressure cavitation device of claim 7, characterized by: and a spray head is arranged in the water spray hole.
9. The adjustable jet pressure cavitation device of claim 1 or 2, characterized in that: the first through hole extends in the radial direction of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022566618.8U CN213510444U (en) | 2020-11-09 | 2020-11-09 | Jet pressure adjustable cave making device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022566618.8U CN213510444U (en) | 2020-11-09 | 2020-11-09 | Jet pressure adjustable cave making device |
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| Publication Number | Publication Date |
|---|---|
| CN213510444U true CN213510444U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022566618.8U Active CN213510444U (en) | 2020-11-09 | 2020-11-09 | Jet pressure adjustable cave making device |
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|---|---|
| CN (1) | CN213510444U (en) |
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2020
- 2020-11-09 CN CN202022566618.8U patent/CN213510444U/en active Active
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