CN202708073U - Rotary body sealing device and rotary bit of horizontal directed drilling rig - Google Patents
Rotary body sealing device and rotary bit of horizontal directed drilling rig Download PDFInfo
- Publication number
- CN202708073U CN202708073U CN 201220367423 CN201220367423U CN202708073U CN 202708073 U CN202708073 U CN 202708073U CN 201220367423 CN201220367423 CN 201220367423 CN 201220367423 U CN201220367423 U CN 201220367423U CN 202708073 U CN202708073 U CN 202708073U
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- seal ring
- rotation
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Abstract
The utility model discloses a rotary body sealing device and a rotary bit of a horizontal directed drilling rig. The rotary body sealing device comprises a rotating shaft (1), an O-shaped ring (11) and a sealing ring (13), wherein the O-shaped ring (11) is sleeved at the periphery of the sealing ring (13) to form a sealing component; the sealing component is embedded in a sealing groove (12) of a rotary bit body (5); an outer peripheral surface of the O-shaped ring (11) on the sealing component and the bottom of the sealing ring (12) are in static contact and are sealed; and an inner peripheral surface of the sealing ring (13) on the sealing component and the rotating shaft (1) are in dynamic contact and are sealed. The sealing device is reliable in sealing effect, long in service life, low in manufacturing cost and convenient to assemble and disassemble.
Description
Technical field
The utility model relates to machinery, the horizontal directional drilling machine swivel head that relates in particular to a kind of solid of rotation seal arrangement and this device is installed.
Background technique
Be used for the solid of rotation seal arrangement of machinery, modal seal form has: three kinds of seal with elastometic washer, packing seal and mechanical seals.The many NBR of seal with elastometic washer material adopt moving contact seal form, and are easy to wear, need the frequent cycle to change, and affect efficiency of construction; The packing seal mode seals flute length, needs air vent, and manufacturing requires high, and two ends need to support, and can only be fit to low-speed motion, changes the Sealing trouble; Mechanical sealing adopts dynamic and static sealing separately, adopts spring compression after the wearing and tearing of contacting point, and realizes sealability in the effect of pressure, and sealing configuration is relatively reliable, but complex structure, manufacture cost is high, and it is time-consuming to change accessory.
At present, the swivel head of horizontal directional drilling machine is owing to adopting traditional seal arrangement, its poor sealing performance, and life cycle is short, has affected the normal use of equipment.
The model utility content
It is reliable that first technical problem to be solved in the utility model provides a kind of sealing effect, long service life, low cost of manufacture, solid of rotation seal arrangement easy to loading and unloading.
Second technical problem to be solved in the utility model provides a kind of good sealing effect, and life cycle is long, horizontal directional drilling machine swivel head easy to maintenance.
For solving above-mentioned first technical problem, the technological scheme that a kind of solid of rotation seal arrangement of the present utility model adopts is: comprise O shape circle and seal ring, the outer circumferential suit O shape circle of described seal ring consists of black box, the sealing assembly is embedded in the seal groove, the outer circumferential face of O shape on described black box circle and the bottom of described seal groove be quiet to contact sealing, and the inner peripheral surface of the seal ring on the described black box moves with running shaft and contacts sealing.
As of the present utility model a kind of preferred, described O shape circle adopts the NBR material, and described seal ring adopts the DBU material.
Preferred as another kind of the present utility model, described running shaft is provided with the sealing attachment face, and the width of described sealing attachment face is greater than the width 3-5mm of described black box.
Further, the inner peripheral surface of the seal ring on the described black box moves with running shaft installation sealing surface and contacts sealing.
Further, the both sides of described rotation axis seal attachment face also are provided with annular and stay air drain.
For solving above-mentioned second technical problem, a kind of horizontal directional drilling machine swivel head of the present utility model comprises foregoing solid of rotation seal arrangement is installed.
A kind of solid of rotation seal arrangement of the present utility model and horizontal directional drilling machine swivel head.Because the outer circumferential suit O-ring seals at seal ring consists of black box, sealing assembly material adopts NBR+DBU composite structure form, the O shape circle outer circumferential face that namely has a NBR material and the bottom surface of seal groove be quiet to contact sealing, inner peripheral surface with seal ring of DBU material moves with the rotation axis seal attachment face and contacts sealing, because seal ring not only has extremely low friction factor (0.02～0.04, only be rubber 1/10), and dynamic and static friction factor is quite approaching.Seal ring also has self lubricity, is difficult for adhesion when forming friction pair with running shaft, and starting friction power is little.Thereby reach the effect of good sealing effect, physical life length, low cost of manufacture.
In addition, be provided with annular in the both sides of rotation axis seal attachment face and stay air drain, be convenient on the one hand seal ring and install, annular stays that air drain can store motive sealing between foul and seal ring and the rotation axis seal face and the buffing that produces improves the motive sealing operating conditions on the other hand.
Description of drawings
The accompanying drawing that consists of this specification part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof just are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is a kind of solid of rotation seal arrangement of the present utility model and horizontal directional drilling machine swivel head embodiment's structural representation: and
Fig. 2 is the local enlarged diagram at I place among the figure one.
Embodiment
Hereinafter also describe in conjunction with the embodiments the utility model in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Referring to Fig. 1, a kind of solid of rotation seal arrangement preferred embodiment of the present utility model comprises by running shaft 1, swivel head body 5, O shape circle 11 and seal ring 13 forming.
Running shaft 1 has through hole 2 vertically, and the middle part is provided with the vertical hole that communicates with axial hole.At the right-hand member of running shaft 1, screw by outside thread with the bolt 9 of axial bore and to be installed in the end, screw at the right-hand member of bolt 9 plug 10 is installed, bolt 9 is realized the through hole 2 of running shafts 1 and extraneous sealing by stuffing box gland 7 and seal ring 8 and plug 10.
In conjunction with referring to Fig. 2, be sleeved on the swivel head body 5 on the running shaft 1, take the vertical hole at running shaft 1 middle part as symmetry center, both sides are provided with twice sealing attachment face 14 spaced apart and bearing 3 successively.Wherein, per pass seals the width of attachment face 14 greater than the width 3-5mm of seal ring 13, and in the both sides of per pass sealing attachment face, offers annular and stay air drain 15.Annular is stayed the effect of air drain 15, is convenient to install on the one hand seal ring 13, and annular is stayed air drain 15 and can be stored the buffing that foul and seal ring 13 produce with sealing motive sealing between the attachment face 14 on the other hand, improves the motive sealing operating conditions.
The two ends of swivel head body 5 are supported by the bearing 3 that is installed on the running shaft 1, and the middle part offers mounting hole with respect to the opposite position in vertical hole on the running shaft 1, and the transit joint 4 that connects for the outside is installed in this mounting hole.The position that corresponds to sealing attachment face 14 at swivel head body 5 offers seal groove 12.Axially being located by the back-up ring 6 that is located at the boss on running shaft 1 left side and be located on the right of swivel head body 5.
The material of seal ring 13 is preferably BDU, the material of O-ring seals 11 is preferably NBR, the outer circumferential suit O shape circle 11 of seal ring 13 consists of black box, the sealing assembly is embedded in the swivel head body 5 corresponding seal grooves 12, the outer circumferential face of O shape on black box circle 11 and the bottom of seal groove 12 form that elasticity is quiet to contact sealing, the flexible moving sealing that contacts of sealing attachment face 14 formation of setting on the inner peripheral surface of the seal ring 13 on the black box and the running shaft 1.The black box material adopts NBR+DBU composite structure form, have namely that outer circumferential face and the bottom surface elasticity of seal groove 12 of O shape circle 11 of NBR material is quiet to contact sealing, inner peripheral surface with seal ring 13 of DBU material moves with the sealing attachment face elasticity of running shaft 1 and contacts sealing, because seal ring 13 not only has extremely low friction factor (0.02～0.04, only be rubber 1/10), and dynamic and static friction factor is quite approaching.Seal ring 13 also has self lubricity, is difficult for adhesion when forming friction pair with running shaft, and starting friction power is little.Thereby reach the effect of good sealing effect, physical life length, low cost of manufacture.
As a kind of application, a kind of horizontal directional drilling machine swivel head of the present utility model comprises foregoing solid of rotation seal arrangement is installed.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, concrete structure of the present utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. solid of rotation seal arrangement, comprise running shaft (1), O shape circle (11) and seal ring (13), it is characterized in that, the outer circumferential suit O shape circle (11) of described seal ring (13) consists of black box, the sealing assembly is embedded in the seal groove (12) of swivel head body (5), the outer circumferential face of O shape on described black box circle (11) and the bottom of described seal groove (12) be quiet to contact sealing, and the inner peripheral surface of the seal ring on the described black box (13) moves with running shaft (1) and contacts sealing.
2. solid of rotation seal arrangement according to claim 1 is characterized in that, described O shape circle (11) adopts the NBR material, and described seal ring (13) adopts the DBU material.
3. solid of rotation seal arrangement according to claim 1 is characterized in that, described running shaft (1) is provided with sealing attachment face (14), and the width of described sealing attachment face (14) is greater than the width 3-5mm of described black box.
4. according to claim 1 or 3 described solid of rotation seal arrangements, it is characterized in that, the inner peripheral surface of the seal ring on the described black box (13) is provided with sealing attachment face (14) with running shaft (1) and contacts sealing.
5. solid of rotation seal arrangement according to claim 3 is characterized in that, the both sides of described rotation axis seal attachment face (14) also are provided with annular and stay air drain (15).
6. a horizontal directional drilling machine swivel head is characterized in that, comprises the described solid of rotation seal arrangement of any one in the claim 1 to 5 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367423 CN202708073U (en) | 2012-07-27 | 2012-07-27 | Rotary body sealing device and rotary bit of horizontal directed drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367423 CN202708073U (en) | 2012-07-27 | 2012-07-27 | Rotary body sealing device and rotary bit of horizontal directed drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708073U true CN202708073U (en) | 2013-01-30 |
Family
ID=47588379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367423 Expired - Fee Related CN202708073U (en) | 2012-07-27 | 2012-07-27 | Rotary body sealing device and rotary bit of horizontal directed drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191615A (en) * | 2017-06-04 | 2017-09-22 | 江苏圣迪德智能科技有限公司 | A kind of pipeline positions practical valve with interior |
| CN109237029A (en) * | 2018-11-30 | 2019-01-18 | 恒天九五重工有限公司 | A kind of rotary sealing appts |
-
2012
- 2012-07-27 CN CN 201220367423 patent/CN202708073U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191615A (en) * | 2017-06-04 | 2017-09-22 | 江苏圣迪德智能科技有限公司 | A kind of pipeline positions practical valve with interior |
| CN109237029A (en) * | 2018-11-30 | 2019-01-18 | 恒天九五重工有限公司 | A kind of rotary sealing appts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Panpan economic and Technological Development Zone of Hunan province Changsha City Road 410100 18-1 Patentee after: HUNAN WUXIN TUNNEL INTELLIGENT EQUIPMENT CO., LTD. Address before: 410100 Hunan Province Economic and Technological Development Zone Changsha Panpan Road No. 18-1 Patentee before: Hunan Wuxin Heavy Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20190727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |