CN209145497U - A kind of injection mechanism for chisel bit - Google Patents
A kind of injection mechanism for chisel bit Download PDFInfo
- Publication number
- CN209145497U CN209145497U CN201822040062.1U CN201822040062U CN209145497U CN 209145497 U CN209145497 U CN 209145497U CN 201822040062 U CN201822040062 U CN 201822040062U CN 209145497 U CN209145497 U CN 209145497U
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- China
- Prior art keywords
- feed pipe
- spray
- discharge nozzle
- diameter
- chisel bit
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Abstract
The utility model discloses a kind of injection mechanisms for chisel bit, including feed pipe and discharge nozzle, the charging pipe outer wall is provided with annular groove, feed pipe is internally provided with feeding-passage, multiple the first spray-holes being connected to feed pipe inside are evenly provided on the cell wall of the annular groove side, described discharge nozzle one end is connect with feed pipe one end, the discharge nozzle is disposed with the first conical cavity from one end to its other end connecting with feed pipe, adapter cavity, second conical cavity and discharging chamber, multiple the second spray-holes being connected to the second conical cavity are provided on the discharging tube wall.The utility model makes slack coal be pressed into sample tap using compressed air, reaches and is fast and accurately sampled, and can save significantly on sample time, improve depth selection, improves coal mine sampling work efficiency and safety, improve the production efficiency of seam mining.
Description
Technical field
The utility model relates to field of drill, and in particular to a kind of injection mechanism for chisel bit.
Background technique
At present coal mine gas hazard management based on regional control, Local provisions be supplement, region Gas explosion burns it is quick
Determination techniques become urgent problem, thus deep hole sampling is the matter of utmost importance for needing to solve；Existing deep layer gas takes
Sample loading mode mainly has: basket sampling, Auger drilling aperture connect coal dust, pressure wind injection sampling etc., these sampling methods are sampling
Its sample time is generally at 30 minutes or so in the process, and depth selection is at 30 meters or so.Cause sample rate slow and sampling
The main reason for depth as shallow, is that drill bit internal injection mechanism introduces the effect of slack coal, seriously hinders the production of seam mining
Efficiency restricts the development of productivity.
Utility model content
To solve the deficiencies in the prior art, providing one kind can be such that slack coal more smoothly introduces in drilling rod to the utility model
The injection mechanism of the chisel bit of sampling efficiency is improved in portion.
To achieve the above object, the utility model provides following technical scheme:
A kind of injection mechanism for chisel bit, it is described including feed pipe and the discharge nozzle being connect with feed pipe one end
Charging pipe outer wall is provided with annular groove, and feed pipe is internally provided with feeding-passage, uniform on the cell wall of the annular groove side
Multiple the first spray-holes being connected to feed pipe inside are provided with, the discharge nozzle is another to its from the one end connecting with feed pipe
End be disposed with the first conical cavity, adapter cavity, the second conical cavity and discharging chamber, be provided on the discharging tube wall it is multiple and
Second spray-hole of the second conical cavity connection.
Further, the feed pipe right end is provided with the external screw thread for connecting with chisel bit, and left end is provided with
Internal screw thread for being connect with discharge nozzle.
Further, the feeding-passage is gradually reduced by right end to left end diameter.
Further, first spray-hole and the second spray-hole are with the central axis of feed pipe in 30 °~50 ° folders
The round hole at angle.
Further, described maximum one end of first conical cavity diameter is connected to feeding-passage, and have a diameter larger than and its
The diameter of adjacent feeding-passage one end.
Further, the adapter cavity and discharging chamber are the identical cylindrical cavity of both ends of the surface diameter, and discharging chamber is straight
Diameter is greater than the diameter of adapter cavity.
Beneficial effect is, the utility model makes slack coal be pressed into sample tap using compressed air, reach fast and accurately into
Row sampling can save significantly on sample time, improve depth selection, improve coal mine sampling work efficiency and safety, improve coal
The production efficiency of layer exploitation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the main view of the utility model；
Fig. 2 is the cross-sectional view of the line A-A along Fig. 1；
Fig. 3 is the cross-sectional view after the utility model and chisel bit assembly；
The reference numerals are as follows:
In figure: 1, feed pipe；2, annular groove；3, the first spray-hole；4, the second spray-hole；5, discharge nozzle；6, feeding-passage；
7, the first conical cavity；8, adapter cavity；9, the second conical cavity；10, discharging chamber；11, chisel bit；1101, sample tap；1102, it bores
Head jet port；12, annular chamber.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Referring to shown in Fig. 1-Fig. 2, the utility model provides a kind of injection mechanism for chisel bit, including feed pipe
1 and discharge nozzle 5,1 right end of feed pipe be provided with the external screw thread for connecting with chisel bit 11, left end, which is provided with, to be used for
The internal screw thread connecting with discharge nozzle 5,1 outer wall of feed pipe are provided with annular groove 2, and feed pipe 1 is internally provided with feeding-passage 6, institute
State the first spray-hole 3 for being evenly provided with eight on the cell wall in 2 left side of annular groove and being connected to inside feed pipe 1, the discharging
5 one end of pipe is connected with 1 one end of feed pipe by corresponding thread seal, and one end that the discharge nozzle 5 is connect with feed pipe 1 certainly is extremely
Its other end is disposed with the first conical cavity 7, adapter cavity 8, the second conical cavity 9 and the discharging chamber 10 of connection, the discharge nozzle 5
Eight the second spray-holes 4 being connected to the second conical cavity 9 are provided on tube wall.
In the utility model, the feeding-passage 6 is gradually reduced by right end to left end diameter, shown in Figure 2, and charging is logical
The angle of the central axis of the contour line and feed pipe 1 of 6 section of road is 1 °.
In the utility model, first spray-hole 3 and the second spray-hole 4 are with the central axis of feed pipe 1 in 18 °
The round hole of angle makes compressed air reach optimal injection effect when spraying 5 inside of feed and exhaust tube from spray-hole.
In the utility model, the maximum one end of 7 diameter of the first conical cavity is connected to feeding-passage 6, and its diameter is big
Diameter in 6 one end of feeding-passage adjacent thereto, so that compressed air can be out of toroidal cavity 12 during sampling
It is successfully injected into the first conical cavity 7 by the first spray-hole 3.
In the utility model, the adapter cavity 8 and discharging chamber 10 are the identical cylindrical cavity of both ends of the surface diameter, and are discharged
The diameter of chamber 10 is greater than the diameter of adapter cavity 8.
Shown in Figure 3, for the utility model in sampling, a part of compressed air is after annular chamber 12 by drill bit jet port
1102 spray, and another part enters the first conical cavity 7 and the second conical cavity 9 through the first spray-hole 3 and the second spray-hole 4, are boring
Under the reacting cycle effect of head jet port 1102 and the first spray-hole 3 and the effect of the second spray-hole 4, generated in 6 left end of feeding-passage
Suction effect, so that slack coal be made most to lead to inside drilling rod through discharging chamber 10 afterwards by sample tap 1101 into feeding-passage 6.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (6)
1. a kind of injection mechanism for chisel bit, it is characterised in that: connect including feed pipe (1) and with feed pipe (1) one end
The discharge nozzle (5) connect, feed pipe (1) outer wall are provided with annular groove (2), and feed pipe (1) is internally provided with feeding-passage
(6), multiple the first spray-holes being connected to feed pipe (1) inside are evenly provided on the cell wall of annular groove (2) side
(3), the discharge nozzle (5) is disposed with the first conical cavity (7), mistake from one end to its other end connecting with feed pipe (1)
Chamber (8), the second conical cavity (9) and discharging chamber (10) are crossed, multiple and the second conical cavity is provided on discharge nozzle (5) tube wall
(9) the second spray-hole (4) being connected to.
2. a kind of injection mechanism for chisel bit according to claim 1, it is characterised in that: the feed pipe (1)
Right end is provided with the external screw thread for connecting with chisel bit (11), and left end is provided with interior for connecting with discharge nozzle (5)
Screw thread.
3. a kind of injection mechanism for chisel bit according to claim 1, it is characterised in that: the feeding-passage
(6) diameter is gradually reduced from right to left.
4. a kind of injection mechanism for chisel bit according to claim 1, it is characterised in that: first spray-hole
(3) and the second spray-hole (4) be with the central axis of feed pipe (1) be in 15 °~30 ° angles round hole.
5. a kind of injection mechanism for chisel bit according to claim 1, it is characterised in that: first conical cavity
(7) the maximum one end of diameter is connected to feeding-passage (6), and has a diameter larger than the straight of feeding-passage adjacent thereto (6) one end
Diameter.
6. a kind of injection mechanism for chisel bit according to claim 1, it is characterised in that: the adapter cavity (8)
It is the identical cylindrical cavity of both ends of the surface diameter with discharging chamber (10), and the diameter of discharging chamber (10) is greater than the straight of adapter cavity (8)
Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822040062.1U CN209145497U (en) | 2018-12-06 | 2018-12-06 | A kind of injection mechanism for chisel bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822040062.1U CN209145497U (en) | 2018-12-06 | 2018-12-06 | A kind of injection mechanism for chisel bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209145497U true CN209145497U (en) | 2019-07-23 |
Family
ID=67289272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822040062.1U Active CN209145497U (en) | 2018-12-06 | 2018-12-06 | A kind of injection mechanism for chisel bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209145497U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566129A (en) * | 2019-10-27 | 2019-12-13 | 王琨 | Reverse circulation dust sampling drill bit |
| CN113309472A (en) * | 2021-07-02 | 2021-08-27 | 重庆大学 | Three-channel reverse circulation drill bit |
-
2018
- 2018-12-06 CN CN201822040062.1U patent/CN209145497U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566129A (en) * | 2019-10-27 | 2019-12-13 | 王琨 | Reverse circulation dust sampling drill bit |
| CN113309472A (en) * | 2021-07-02 | 2021-08-27 | 重庆大学 | Three-channel reverse circulation drill bit |
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