CN203334950U - Piston with flow guiding port and down-hole hammer manufactured with piston with flow guiding port - Google Patents
Piston with flow guiding port and down-hole hammer manufactured with piston with flow guiding port Download PDFInfo
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- CN203334950U CN203334950U CN2013203800071U CN201320380007U CN203334950U CN 203334950 U CN203334950 U CN 203334950U CN 2013203800071 U CN2013203800071 U CN 2013203800071U CN 201320380007 U CN201320380007 U CN 201320380007U CN 203334950 U CN203334950 U CN 203334950U
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- piston
- flow
- guiding mouth
- flow guiding
- guiding port
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Abstract
The utility model discloses a piston with a flow guiding port and a down-hole hammer manufactured with the piston with the flow guiding port. The piston with the flow guiding port comprises a piston body, wherein a piston central air hole is formed in the piston body, the flow guiding port is formed in the end, close to a rear air chamber, of the piston body, and the flow guiding port is of an expanding structure; the diameter of the small end of the flow guiding port of the expanding structure is the same as the diameter of the piston central air hole, and the diameter of the big end of the flow guiding port of the expanding structure is smaller than the external diameter of the piston body; the piston body and the flow guiding port are arranged integrally; the flow guiding port is in a shape of a concave arc or a convex arc, or the flow guiding port is formed by a plurality of sections of fold lines. The utility model further discloses the down-hole hammer manufactured with the piston with the flow guiding port. The piston with the flow guiding port and the down-hole hammer manufactured with the piston with the flow guiding port have the advantages of being simple in structure and capable of obviously improving working efficiency.
Description
Technical field
The utility model relates to a kind of pneumatic impact equipment, is specially a kind of with the piston of flow-guiding mouth and the down-the-hole air hammer of preparation thereof.
Background technology
Down-the-hole air hammer is a kind of typical pneumatic impact equipment, and it is the drilling tool of down-the-hole drill, is the operating mechanism that rig is implemented boring.Piston is the vitals of down-the-hole air hammer, and the stroke repeatedly by piston and return motion pass to be impacted rock with the form of stress wave through drill bit by the kinetic energy of piston.
Existing piston is plane structure near rear gas chamber's end, and this piston structure is unfavorable for passing through fast of rear gas chamber's gas, affects operating efficiency.
Summary of the invention
The purpose of this utility model provides that a kind of it is simple in structure with the piston of flow-guiding mouth and the down-the-hole air hammer of preparation thereof, can obviously increase work efficiency.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of piston of the down-the-hole air hammer with flow-guiding mouth, comprise piston only, and be provided with the piston centre porosity in piston only, be characterised in that: piston only is provided with flow-guiding mouth by rear gas chamber's end, and described flow-guiding mouth is the hole enlargement structure.
The diameter of osculum one end of the flow-guiding mouth of described hole enlargement structure is identical with the diameter of piston centre porosity, and the diameter of a large mouthful end is less than the external diameter of piston only.
Described piston only and flow-guiding mouth design for integral type.
The contour shape of described flow-guiding mouth is concave arc, protruding circular arc or consists of the multistage broken line.
Adopt the above-mentioned down-the-hole air hammer prepared with the piston of flow-guiding mouth, comprise outer tube, also be provided with distribution bar and piston only in outer tube, one end of piston only is provided with the flow-guiding mouth of hole enlargement structure, one end of distribution bar can form and coordinate and shutoff piston centre porosity with an end of piston only band flow-guiding mouth, between distribution bar and piston only, is provided with rear gas chamber.
The utility model is due to the flow-guiding mouth design that adopts the hole enlargement structure, when using impactor, what make that the gases at high pressure of rear gas chamber can explosion type passes through the piston centre porosity, on the one hand, the instantaneous explosion formula is by guaranteeing have sufficient gases at high pressure to pass through the piston centre porosity, reach the bit central pore until strengthen the deslagging effect at the bottom of hole; On the other hand, resistance when rear gas chamber's gas volume reduces piston stroking upward greatly, impel the increase of piston stroking upward height, potential energy to improve greatly; Thereby final ballistic work improves greatly.
The utility model is conducive to increase work efficiency.Through lab analysis and on-the-spot service efficiency, can improve more than 10%.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is with the down-the-hole air hammer of flow-guiding mouth piston structure schematic diagram.
Fig. 2 is the structural representation of the down-the-hole air hammer that adopts the piston with flow-guiding mouth to prepare.
Fig. 3 is the structural representation of the described piston flow-guiding mouth of embodiment 1.
Fig. 4 is the structural representation of the described piston flow-guiding mouth of embodiment 2.
Fig. 5 is the structural representation of the described piston flow-guiding mouth of embodiment 3.
The specific embodiment
As Figure 1-5, the component names of the numbering correspondence in figure is:
Joint after 1-, 2-non retern valve, 3-O type circle, 4-plastic plug, the compound dish spring of 5-, 6-base, 7-spring, 8-O type circle, 9-distribution bar, 10-inner casing, the 11-piston only, 12-outer tube, 13-O type circle, the 14-fairlead, 15-maintainance set, 16/17-O type circle, the 18-snap ring, 19-front connector, 20-drill bit, 31-flow-guiding mouth.
Joint hollow duct after 21-, 22-distribution bar side passage, 23-annular chamber, 24-piston body surface air supply chamber, 25-circular passage, air chamber before 26-, 27-rear gas chamber, 28-piston centre porosity, 29-bit central pore, 30-air supply channel.
Embodiment 1:
As shown in Figure 1, for the piston structure schematic diagram of the down-the-hole air hammer with flow-guiding mouth, comprise piston only 11, be provided with piston centre porosity 28 in piston only, piston only 11 is provided with flow-guiding mouth 31 by rear gas chamber's end; Described flow-guiding mouth is concave arc hole enlargement structure, sees Fig. 3, and the diameter of osculum one end of flow-guiding mouth is identical with the diameter of piston centre porosity 28, and the diameter of a large mouthful of end is less than the external diameter of piston only, and piston only and flow-guiding mouth design for integral type.The flow-guiding mouth of this hole enlargement structure is compared the better effects if of other hole enlargement structures.
Embodiment 2:
The flow-guiding mouth of this piston is dome arc hole enlargement structure, sees Fig. 4, and all the other structures are with embodiment 1.
Embodiment 3:
The flow-guiding mouth of this piston is the hole enlargement structure that the multistage broken line forms, and sees Fig. 5, and all the other structures are with embodiment 1.The flow-guiding mouth of this hole enlargement structure is compared the better effects if of other hole enlargement structures.
Only enumerated the flow-guiding mouth of three kinds of hole enlargement structures in the utility model, but the flow-guiding mouth of all hole enlargement structures and all should fall into the protection domain of this utility model according to the similar distortion that the flow-guiding mouth of hole enlargement structure carries out.
Embodiment 4:
A kind of down-the-hole air hammer that adopts the piston with flow-guiding mouth to prepare, as shown in Figure 2, comprise outer tube 12, also be provided with distribution bar 9 and piston only 11 in outer tube, one end of piston only 11 is provided with the flow-guiding mouth 31 of hole enlargement structure, the diameter of osculum one end of flow-guiding mouth is identical with the diameter of piston centre porosity 28, and the diameter of a large mouthful of end is less than the external diameter of piston only, and piston only and flow-guiding mouth design for integral type; One end of distribution bar 9 can coordinate and shutoff piston centre porosity 28 with the end formation of piston only 11 with flow-guiding mouth, is provided with rear gas chamber 27 between distribution bar 9 and piston only.
This down-the-hole air hammer is comprised of 19 parts, wherein comprises five O shape circles, simultaneously, for convenience of understanding, has also provided the installation site of drill bit in figure.Its concrete structure is: comprise outside rear joint 1, outer tube 12, the front connector 19 connected successively, described front connector 19 connects drill bit 20, be provided with non retern valve 2 and distribution bar 9 near rear joint in outer tube, non retern valve 2 parts are positioned at distribution bar major part, are provided with compound dish spring 5 and base 6 between distribution bar and rear joint, also be provided with inner casing 10 and piston only 11 in outer tube, can form air supply channel 30 between the interior inside wall of cylinder and piston only outer wall, piston only 11 is provided with the large end of piston and piston small end, distribution bar microcephaly is positioned at the rear gas chamber 27 of the large end of piston, distribution bar microcephaly can coordinate with piston centre porosity 28 the formation shutoff, outer tube is inboard forms annular chamber 23 with the inner casing outside, form piston body surface air supply chamber 24 and circular passage 25 between piston only and outer tube 12, the piston small end can contact with drill bit 20, also be provided with fairlead 14 between piston small end and outer tube 12, air chamber 26 before forming between fairlead 14 and outer tube 12 and piston only 11, drill bit 20 is provided with bit central pore 29.
While using this down-the-hole air hammer, for starting impactor, must first transfer impactor.Contact also jack-up piston only 11, starts preparation and comes to an end when drill bit 20 with rock when position shown in Fig. 2.
The gases at high pressure P0 introduced by rear joint hollow duct 21, back down non retern valve 2, and through distribution bar side passage 22, outer tube is inboard with the inner casing outside, forms annular chamber 23, gases at high pressure enter front air chamber 26 and rear gas chamber 27 by what replace here.
When return starts, piston only 11 is in position shown in Fig. 2, and the gases at high pressure in annular chamber 23 enter front air chamber 26 through piston body surface air supply chamber 24, process piston body surface and promote the piston onlies motion.In the motion of piston only return, when circular passage 25 is closed, front air chamber 26 air inlets stop, and the gases at high pressure in the forward air chamber of piston expand and continue to move upward, after piston small end and fairlead 14 disengagements, the gas of front air chamber 26 is at the bottom of bit central pore 29 drains into hole.When piston only starts the return motion, the gas of rear gas chamber 27, escape at the bottom of hole through flow-guiding mouth 31, piston centre porosity 28, bit central pore 29, and back pressure resistance suffered while making the piston only motion is very little; When distribution bar microcephaly starts to enter the cooperation of the large end centre bore formation of piston, the return motion of piston only is compressed the gas of rear gas chamber 27; When the large end motion of piston, to the interior inside wall of cylinder, forming opening, gases at high pressure enter rear gas chamber 27 through annular chamber 23, air supply channel 30.Due to the piston only motional inertia, piston only slides a segment distance, until enter the gases at high pressure generation pressure of rear gas chamber 27, makes piston only stop the return motion.
During the piston only stroke movement, piston only 11 moves to the opening turn-off transient of the large end of piston and inner casing 10 inwalls formation under the promotion of gases at high pressure, the passage that gases at high pressure enter rear gas chamber 27 is blocked, piston only moves downward by gas expansion and Action of Gravity Field, after piston centre porosity 28 and distribution bar small end break away from, rear gas chamber's gas is at the bottom of flow-guiding mouth 31, piston centre porosity 28, bit central pore 29 drain into hole.Now piston only 11 shock drill bit 20 afterbodys complete stroke movement.When piston only starts stroke movement, the gas of front air chamber 26 continues at the bottom of fairlead 14 and bit central pore 29 are discharged to hole; When the piston small end enters fairlead, the gas of front air chamber starts compression, and piston only moves to always connects circular passage 25, and gases at high pressure enter into front air chamber 26, complete the distribution process.
Being designed with of flow-guiding mouth is beneficial to passing through fast of gases at high pressure.On the one hand, the instantaneous explosion formula is by guaranteeing have sufficient high pressure gas to pass through piston centre porosity, bit central pore until strengthen the deslagging effect at the bottom of hole.On the other hand, resistance when rear gas chamber's gas volume reduces piston stroking upward greatly, impel the increase of piston stroking upward height, potential energy to improve greatly; Thereby final ballistic work improves greatly.
The present embodiment has only been enumerated the piston application in down-the-hole air hammer of a kind of employing with flow-guiding mouth; but protection domain of the present utility model is not limited to the down-the-hole air hammer of this kind of structure, down-the-hole air hammer prepared with the piston of the flow-guiding mouth of hole enlargement structure by all the other employings all should fall into protection domain of the present utility model.
Claims (5)
1. the piston with flow-guiding mouth, comprise piston only (11), is provided with piston centre porosity (28) in piston only (11), is characterised in that: piston only (11) is provided with flow-guiding mouth (31) by rear gas chamber's end, and described flow-guiding mouth is the hole enlargement structure.
2. the piston with flow-guiding mouth according to claim 1, it is characterized in that: the diameter of osculum one end of the flow-guiding mouth of described hole enlargement structure is identical with the diameter of piston centre porosity (28), and the diameter of a large mouthful end is less than the external diameter of piston only (11).
3. the piston with flow-guiding mouth according to claim 1 is characterized in that: described piston only (11) designs for integral type with flow-guiding mouth.
4. the piston with flow-guiding mouth according to claim 1, it is characterized in that: the contour shape of described flow-guiding mouth is concave arc, protruding circular arc or consists of the multistage broken line.
5. adopt one of the claim 1-4 described down-the-hole air hammer prepared with the piston of flow-guiding mouth, it is characterized in that: comprise outer tube (12), also be provided with distribution bar (9) and piston only (11) in outer tube, one end of piston only (11) is provided with the flow-guiding mouth (31) of hole enlargement structure, one end of distribution bar (9) can coordinate and shutoff piston centre porosity (28) with the end formation of piston only (11) with flow-guiding mouth, is provided with rear gas chamber (27) between distribution bar (9) and piston only.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203800071U CN203334950U (en) | 2013-06-28 | 2013-06-28 | Piston with flow guiding port and down-hole hammer manufactured with piston with flow guiding port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203800071U CN203334950U (en) | 2013-06-28 | 2013-06-28 | Piston with flow guiding port and down-hole hammer manufactured with piston with flow guiding port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203334950U true CN203334950U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203800071U Expired - Lifetime CN203334950U (en) | 2013-06-28 | 2013-06-28 | Piston with flow guiding port and down-hole hammer manufactured with piston with flow guiding port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203334950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306599A (en) * | 2013-06-28 | 2013-09-18 | 宜昌市五环钻机具有限责任公司 | Piston with guidance port and down-hole hammer prepared thereby |
-
2013
- 2013-06-28 CN CN2013203800071U patent/CN203334950U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306599A (en) * | 2013-06-28 | 2013-09-18 | 宜昌市五环钻机具有限责任公司 | Piston with guidance port and down-hole hammer prepared thereby |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |