CN101892805A - Seal structure for upward return mud in power head of shaft boring machine - Google Patents
Seal structure for upward return mud in power head of shaft boring machine Download PDFInfo
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- CN101892805A CN101892805A CN 201010231560 CN201010231560A CN101892805A CN 101892805 A CN101892805 A CN 101892805A CN 201010231560 CN201010231560 CN 201010231560 CN 201010231560 A CN201010231560 A CN 201010231560A CN 101892805 A CN101892805 A CN 101892805A
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- wear
- resistant sleeve
- sealing shroud
- sealing
- return mud
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Abstract
The invention discloses a seal structure for upward return mud in a power head of a shaft boring machine, which is characterized in that: a wear-resistant sleeve and a sleeve gasket pressed at the top end of the wear-resistant sleeve form a moving seal structure; in the moving seal structure, the wear-resistant sleeve is a rotatable component driven by a gear; the sleeve gasket is a non-rotatable component fixed by a pin shaft; an end cover is pressed against the top end of the sleeve gasket; and an oil passage is reserved on the sidewall of the sleeve gasket, and is communicated between an oil cup and the seal surface of the sleeve gasket. The seal structure can effectively improve the moving seal reliability of upward return mud parts in the power head of the shaft boring machine, and has prolonged service life.
Description
Technical field
The present invention relates to hermetically-sealed construction, go up the hermetically-sealed construction of return mud in a kind of shaft drilling machine unit head of more specifically saying so.
Background technology
Unit head in the power unit type shaft drilling machine is the heart of rig, it is being born transfer drive torque simultaneously and is getting rid of the task of the drilling cuttings rock slag that carries in the mud, so will make gear and bearing in the stained unit head of mud for the seal failure of last return mud, and influence its application life.
Have in unit head and adopt, but when unit head rotated, because the effect of frictional force can make rubber seal tear along its adhesive surface, this form effective time can only keep about two months with two kinds of rubber seals that material is bonding.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, the hermetically-sealed construction of going up return mud in a kind of shaft drilling machine unit head is provided, to improve the reliability that goes up the movable sealing of return mud place in the shaft drilling machine unit head, increasing the service life.
Technical solution problem of the present invention adopts following technical scheme:
The characteristics that go up the hermetically-sealed construction of return mud in the shaft drilling machine unit head of the present invention are: the sealing shroud on the wear-resistant sleeve top forms movable sealing structure by wear-resistant sleeve and gland, in described movable sealing structure, wear-resistant sleeve is the revolving member by gear driven, sealing shroud is that end cap is pressed on the top of sealing shroud by the fixing nonrotational member of bearing pin; On the sidewall of described sealing shroud oil duct is set, described oil duct is communicated with between the sealing surface of lubricating cup and sealing shroud.
The characteristics that go up the hermetically-sealed construction of return mud in the shaft drilling machine unit head of the present invention also are:
The wear-compensating structure is set, described wear-compensating structure comprises that the sealing surface that described sealing shroud is set is the end face of an axial boss, in the periphery of described sealing shroud one boss radially is set, on described radially boss, press spring base is set vertically, be placed with stage clip in the described press spring base, between gland and sealing shroud, provide axial pre tightening force with described stage clip.
Described wear-resistant sleeve is made of wear-resistant sleeve body and wear ring, and described wear ring is the high-chromium cast iron piece that is embedded on the wear-resistant sleeve body end face, forms the sealing surface of wear-resistant sleeve, is the replaceable structure that is connected with adhesive glue between described wear ring and wear-resistant sleeve body.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention adopts movable sealing structure, good sealing effect.
2, the present invention is provided with the wear-compensating structure and can realizes automatic compensation, has effectively prolonged the application life of hermetically-sealed construction.
3, the wear-out part in the present invention's wear-resistant sleeve is set to replaceable structure, can effectively reduce use cost.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Number in the figure: 1 end cap, 2 stage clips, 3 sealing shrouds, 3a axial boss, 3b be boss, 3c sealing ring, 4 lubricating cups, 5 wear rings, 6 wear-resistant sleeves radially.
The specific embodiment
Referring to Fig. 1, present embodiment is to form movable sealing structure by wear-resistant sleeve 6 and the sealing shroud 3 that is pressed in the wear-resistant sleeve top, and in movable sealing structure, wear-resistant sleeve 6 is the revolving members by gear driven, sealing shroud 3 is that end cap 1 is pressed on the top of sealing shroud 3 by the fixing nonrotational member of bearing pin; On the sidewall of sealing shroud 3 oil duct is set, oil duct is communicated with between the sealing surface of lubricating cup 4 and sealing shroud 3.
Shown in Figure 1, the sealing surface of the sealing shroud 3 in the present embodiment is the end face of an axial boss 3a; In the periphery of sealing shroud 3 a boss 3b radially is set, radially on the boss 3b press spring base being set vertically, be placed with stage clip 2 in the press spring base, between gland 1 and sealing shroud 3, provide axial pre tightening force with stage clip 2, shown in the figure, sealing ring 3c is set in the periphery of sealing shroud 3.
Wear-resistant sleeve 6 in the present embodiment is made of wear-resistant sleeve body and wear ring 5, wear ring 5 is for being embedded on the wear-resistant sleeve body end face, forming the high-chromium cast iron piece of the sealing surface of wear-resistant sleeve, is the replaceable structure that is connected with adhesive glue between wear ring 5 and wear-resistant sleeve body.
Wear-resistant sleeve 6 rotates under the drive of gear, and sealing shroud 3 forms a movable sealing environment because the effect of bearing pin does not rotate between sealing shroud 3 and wear-resistant sleeve 6; End cap 1 provides a suitable specific pressure, with return mud in a little sealings with stage clip 2 compressions on the contact surface of sealing shroud 3 and wear-resistant sleeve 6.
Owing between sealing shroud 3 and wear-resistant sleeve 6, relative motion is arranged, then certainly exist wearing and tearing on their contact surface, for reducing and the compensate for wear amount, lubricating cup 4 should regularly inject lubricating grease, with lubricated moving surface.
When wearing and tearing took place, under the effect of the spring force of stage clip 2, sealing shroud 3 moved down automatically vertically, the wear extent of compensation sealing cover 3.When the axial boss 3a of sealing shroud 3 mill to the greatest extent the time, the life-span of sealing shroud 3 knot that promptly comes to an end; Wear-resistant sleeve 6 adopts the mosaic structure of high-chromium cast iron piece, utilizes the high rigidity and the high-wearing feature amount of reducing wear of high-chromium cast iron piece, improves sealing life, when need are changed, only needs to change the high-chromium cast iron piece of inlaying and gets final product.
Claims (3)
1. go up the hermetically-sealed construction of return mud in the shaft drilling machine unit head, it is characterized in that: the sealing shroud (3) on the wear-resistant sleeve top forms movable sealing structure by wear-resistant sleeve (6) and gland, in described movable sealing structure, wear-resistant sleeve (6) is the revolving member by gear driven, sealing shroud (3) is that end cap (1) is pressed on the top of sealing shroud (3) by the fixing nonrotational member of bearing pin; On the sidewall of described sealing shroud (3) oil duct is set, described oil duct is communicated with between the sealing surface of lubricating cup (4) and sealing shroud (3).
2. go up the hermetically-sealed construction of return mud in the shaft drilling machine unit head according to claim 1, it is characterized in that being provided with the wear-compensating structure, described wear-compensating structure comprises that the sealing surface that described sealing shroud (3) is set is the end face of an axial boss, in the periphery of described sealing shroud (3) boss radially is set, on described radially boss, be provided with press spring base vertically, be placed with stage clip (2) in the described press spring base, between gland (1) and sealing shroud (3), provide axial pre tightening force with described stage clip (2).
3. go up the hermetically-sealed construction of return mud in the shaft drilling machine unit head according to claim 1, it is characterized in that: described wear-resistant sleeve (6) is made of wear-resistant sleeve body and wear ring (5), described wear ring (5) is for being embedded on the wear-resistant sleeve body end face, forming the high-chromium cast iron piece of the sealing surface of wear-resistant sleeve, is the replaceable structure that is connected with adhesive glue between described wear ring (5) and wear-resistant sleeve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010231560 CN101892805B (en) | 2010-07-15 | 2010-07-15 | Seal structure for upward return mud in power head of shaft boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010231560 CN101892805B (en) | 2010-07-15 | 2010-07-15 | Seal structure for upward return mud in power head of shaft boring machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101892805A true CN101892805A (en) | 2010-11-24 |
| CN101892805B CN101892805B (en) | 2013-07-10 |
Family
ID=43102136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010231560 Expired - Fee Related CN101892805B (en) | 2010-07-15 | 2010-07-15 | Seal structure for upward return mud in power head of shaft boring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101892805B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2128878A1 (en) * | 1992-01-31 | 1993-08-05 | Darcy L. Flynn | In-line sub for drilling equipment |
| CN2479179Y (en) * | 2001-03-30 | 2002-02-27 | 石油地球物理勘探局装备制造总厂机械厂 | Multi-functional power head |
| CN201155310Y (en) * | 2007-10-29 | 2008-11-26 | 金湖卫东机械有限公司 | Under balance drilling rotating control device sealing body |
| US20090057026A1 (en) * | 2007-08-27 | 2009-03-05 | Williams John R | Spring load seal assembly and well drilling equipment comprising same |
| CN201723149U (en) * | 2010-07-15 | 2011-01-26 | 中煤矿山建设集团有限责任公司 | Sealing structure for mud return of vertical shaft drilling machine power head |
-
2010
- 2010-07-15 CN CN 201010231560 patent/CN101892805B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2128878A1 (en) * | 1992-01-31 | 1993-08-05 | Darcy L. Flynn | In-line sub for drilling equipment |
| CN2479179Y (en) * | 2001-03-30 | 2002-02-27 | 石油地球物理勘探局装备制造总厂机械厂 | Multi-functional power head |
| US20090057026A1 (en) * | 2007-08-27 | 2009-03-05 | Williams John R | Spring load seal assembly and well drilling equipment comprising same |
| CN201155310Y (en) * | 2007-10-29 | 2008-11-26 | 金湖卫东机械有限公司 | Under balance drilling rotating control device sealing body |
| CN201723149U (en) * | 2010-07-15 | 2011-01-26 | 中煤矿山建设集团有限责任公司 | Sealing structure for mud return of vertical shaft drilling machine power head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101892805B (en) | 2013-07-10 |
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Granted publication date: 20130710 Termination date: 20150715 |
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| EXPY | Termination of patent right or utility model |