CN104696209A - Sealing box - Google Patents
Sealing box Download PDFInfo
- Publication number
- CN104696209A CN104696209A CN201510006249.8A CN201510006249A CN104696209A CN 104696209 A CN104696209 A CN 104696209A CN 201510006249 A CN201510006249 A CN 201510006249A CN 104696209 A CN104696209 A CN 104696209A
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- Prior art keywords
- hole
- connecting rod
- sealing case
- tubular casing
- gland
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Abstract
The invention discloses a sealing box. According to the sealing box, a first through hole is formed in a box body; a second through hole is formed in a tubular sleeve arranged in the first through hole in a penetrating manner; a gland comprises a first end, a second end as well as a third through hole communicated with the first end and the second end; the first end is fixedly inserted in the first through hole, and the end surface of the first end is fit with one end surface of the tubular sleeve; a groove is formed in the inner wall of the third through hole, and a rubber sealing ring is embedded in the groove; central lines of the first through hole, the second through hole and the third through hole are overlapped, when a connecting rod is arranged in the first through hole, the second through hole and the third through hole in a penetrating manner, a gap between the inner wall of the second through hole and the connecting rod is smaller than a preset difference, and the rubber sealing ring is fit with the connecting rod, so that oil on the connecting rod is prevented from flowing to the second end. The sealing box is used for solving technical problems that oil leakage occurs easily, and the labor intensity is high and the cost is high for replacement of a framework oil seal after oil leakage in the prior art. Technical effects of effectively preventing oil leakage and reducing the maintenance cost are realized.
Description
Technical field
The present invention relates to technical field of petroleum extraction, particularly relate to a kind of sealing case.
Background technique
At present, the plunger pump crankcase that oil field uses adopts splashing oil lubricating, and adopts skeleton oil seal connecting rod position.But the problem that machine oil is missed from oil sealing position is often there is in plunger pump runs, the main cause of oil sealing leakage of oil is connecting rod is straight reciprocating motion, and outside framework oil seal lip rubber and connecting rod surface of contact less, long-play causes lip rubber to be worn, and outside framework oil seal lip and connecting rod gap increase causes leakage of oil.
After there is leakage of oil, just need to change outside framework oil seal, and change that outside framework oil seal labor intensity is large and cost is high.
That is, adopt the oil on skeleton oil seal connecting rod in prior art, not only easily occur leakage of oil, and the labor intensity changing outside framework oil seal after there is leakage of oil is large and cost is high.
Summary of the invention
The present invention, by providing a kind of sealing case, solves in prior art the oil adopted on skeleton oil seal connecting rod, not only easily occurs leakage of oil, and the large and technical problem that cost is high of the labor intensity changing outside framework oil seal after there is leakage of oil.
The embodiment of the present application provides following technological scheme:
A kind of sealing case, the oil on the connecting rod of water-tight equipment, described sealing case comprises:
Box body, described box body offers the first through hole;
Tubular casing, described tubular casing offers the second through hole, and described tubular casing is arranged in described first through hole, and the outer surface of described tubular casing coordinates with the internal wall transitions of described first through hole;
Gland, described gland comprises first end, the second end and third through-hole, the through described first end of described third through-hole and described second end; Described first end is fixing to be inserted in described first through hole, and the end face of described first end and the end face of described tubular casing are fitted; The inwall of described third through-hole offers a circle groove, in described groove, be embedded with a circle O-ring seal;
Wherein, the center line of the center line of described first through hole, the center line of described second through hole and described third through-hole overlaps, when described connecting rod is arranged in described first through hole, described second through hole and described third through-hole, the gap of described second through-hole wall and described connecting rod is less than preset difference value, and described O-ring seal and described connecting rod are fitted, flow to described second end to stop the oil on described connecting rod.
Optionally, described gap is more than or equal to 0.07 millimeter, and described gap is less than or equal to 0.1 millimeter.
Optionally, the smoothness of described second through-hole wall is greater than the first default smoothness.
Optionally, described first through hole comprises: first paragraph and the second segment be connected with described first paragraph; Wherein, the aperture of described first paragraph is less than the aperture of described second segment, and is less than the external diameter of described tubular casing, is fixed on described second segment to make described tubular casing wear.
Optionally, the radius of described third through-hole is greater than described second through hole, and when described O-ring seal is embedded in described groove, the internal diameter of described O-ring seal is less than described connecting rod, to increase the area of contact of described O-ring seal and described connecting rod.
Optionally, the bottom land center line of described groove is circular, and described bottom land center line is positioned at in the plane of the central axis of described third through-hole.
Optionally, described O-ring seal is coated with oiling agent.
Optionally, described gland is connected by worm structure with described box body.
Optionally, the end face of described second end of described gland is provided with opening slot, to make when spanner inserts described opening slot, described gland can be rotated with by described gland precession or screw out described first through hole.
Optionally, described box body offers attachment hole, described box body is by being bolted on described equipment through described attachment hole.
The one or more technological schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
1, the sealing case that provides of the embodiment of the present application, when connecting rod is arranged in sealing case, because the aperture of the second through hole of tubular casing is close to the external diameter of connecting rod, therefore the second through-hole wall and connecting rod form mechanical seal, then fitted by cushion rubber and connecting rod and form secondary seal, by double seal means, effectively prevent leakage of oil, and when cushion rubber service time is long, cushion rubber can be changed easily, reduce maintenance cost.
2, the sealing case that provides of the embodiment of the present application, the the second through-hole wall face arranging tubular casing is smooth, the gap of the second through hole and connecting rod is more than or equal to 0.07 millimeter, be less than or equal to 0.1 millimeter, to make on the basis realizing mechanical seal, in the gap of the second through-hole wall and connecting rod, form lubricant film, play and alleviate wearing and tearing and cooling effect, extend the working life of sealing case.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the sectional view of sealing case in the embodiment of the present application;
Fig. 2 is the schematic diagram that in the embodiment of the present application, connecting rod is arranged in sealing case.
Embodiment
The embodiment of the present application, by providing a kind of sealing case, solves in prior art the oil adopted on skeleton oil seal connecting rod, not only easily occurs leakage of oil, and the large and technical problem that cost is high of the labor intensity changing outside framework oil seal after there is leakage of oil.Achieve the technique effect effectively preventing leakage of oil and reduce maintenance cost.
For solving the problems of the technologies described above, the embodiment of the present application provides the general thought of technological scheme as follows:
The application provides a kind of sealing case, the oil on the connecting rod of water-tight equipment, and described sealing case comprises:
Box body, described box body offers the first through hole;
Tubular casing, described tubular casing offers the second through hole, and described tubular casing is arranged in described first through hole, and the outer surface of described tubular casing coordinates with the internal wall transitions of described first through hole;
Gland, described gland comprises first end, the second end and third through-hole, the through described first end of described third through-hole and described second end; Described first end is fixing to be inserted in described first through hole, and the end face of described first end and the end face of described tubular casing are fitted; The inwall of described third through-hole offers a circle groove, in described groove, be embedded with a circle O-ring seal;
Wherein, the center line of the center line of described first through hole, the center line of described second through hole and described third through-hole overlaps, when described connecting rod is arranged in described first through hole, described second through hole and described third through-hole, the gap of described second through-hole wall and described connecting rod is less than preset difference value, and described O-ring seal and described connecting rod are fitted, flow to described second end to stop the oil on described connecting rod.
Can be found out by foregoing, when connecting rod is arranged in described sealing case, because the aperture of the second through hole of described tubular casing is close to the external diameter of connecting rod, therefore the second through-hole wall and connecting rod form mechanical seal, then fitted by cushion rubber and connecting rod and form secondary seal, by double seal means, effectively prevent leakage of oil, and when cushion rubber service time is long, cushion rubber can be changed easily, reduce maintenance cost.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete mode of execution, technique scheme is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical scheme, instead of the restriction to technical scheme, when not conflicting, the technical characteristics in the embodiment of the present application and embodiment can combine mutually.
In the present embodiment, provide a kind of sealing case, the oil on the connecting rod of water-tight equipment, please refer to Fig. 1, and Fig. 1 is the sectional view of sealing case in the embodiment of the present application, and described sealing case comprises:
Box body 1, described box body 1 offers the first through hole 11;
Tubular casing 2, described tubular casing 2 offers the second through hole 21, and described tubular casing 2 is arranged in described first through hole 11, and the outer surface of described tubular casing 2 coordinates with the internal wall transitions of described first through hole 11;
Gland 3, described gland 3 comprises first end 31, second end 31 and third through-hole 33, the through described first end 31 of described third through-hole 33 and described second end 32; Described first end 31 is fixing to be inserted in described first through hole 11, and the end face of described first end 31 and the end face of described tubular casing 2 are fitted; The inwall of described third through-hole 33 offers a circle groove 34, in described groove 34, be embedded with a circle O-ring seal 4;
Wherein, the center line of the center line of described first through hole 11, the center line of described second through hole 21 and described third through-hole 33 overlaps, when described connecting rod is arranged in described first through hole 11, described second through hole 21 and described third through-hole 33, the gap of described second through hole 21 inwall and described connecting rod is less than preset difference value, and described O-ring seal 4 is fitted with described connecting rod, flows to described second end 31 to stop the oil on described connecting rod.
In the embodiment of the present application, described connecting rod is the connecting rod of plunger pump crankcase, and certainly, in specific implementation process, described connecting rod also can need the connecting rod on the equipment of transmission for motor or gearbox etc., this is not restricted.
Below by the use of the structure and described sealing case of introducing described sealing case respectively.
First, the structure of described sealing case is introduced.
In the embodiment of the present application, described gap is more than or equal to 0.07 millimeter, and is less than or equal to 0.1 millimeter.That is, the difference that the radius of described second through hole 21 deducts the radius of described connecting rod is more than or equal to 0.07 millimeter, and is less than or equal to 0.1 millimeter.
Specifically, arrange when connecting rod is arranged in described second through hole 21, the gap of described second through hole 21 inwall and connecting rod is more than or equal to 0.07 millimeter, and be less than or equal to 0.1 millimeter, effectively can form mechanical seal because gap is less on the one hand, the oil leakage on prevention connecting rod is in third through-hole 33; On the other hand, because connecting rod often needs back and forth movement, therefore certain interval is set, lubricant film can be formed in the gap of the second through hole 21 inwall and connecting rod, play and alleviate wearing and tearing and cooling effect, extend the working life of sealing case.
Further, the smoothness of described second through hole 21 inwall is greater than the first default smoothness.
Specifically, arranging the second through hole 21 inner wall smooth, is also the mechanical seal strengthening the second through hole 21 inwall and connecting rod on the one hand, on the other hand, smooth surface is also beneficial to the formation of oil film, and then plays and alleviate wearing and tearing and cooling effect, extends working life of sealing case.
In the embodiment of the present application, described first through hole 11 comprises as shown in Figure 1: first paragraph 111 and the second segment 112 be connected with described first paragraph 111; Wherein, the aperture of described first paragraph 111 is less than the aperture of described second segment 112, and is less than the external diameter of described tubular casing 2, is fixed on described second segment to make described tubular casing 2 wear.
Specifically, described tubular casing 2 one end stop bit is in the boundary end face of first paragraph 111 and second segment 112.The other end stop bit is in the end face of the first end 31 of gland 3.Described tubular casing 2 one aspect, by fixing with the transition fit of described first through hole 11, is strengthened fixing by compressing of gland 3 on the other hand.
In the embodiment of the present application, the radius of described third through-hole 33 is greater than described second through hole 21, and when described O-ring seal 4 is embedded in described groove 34, the internal diameter of described O-ring seal 4 is less than described connecting rod, to increase the area of contact of described O-ring seal 4 and described connecting rod.
In specific implementation process, the radius arranging described third through-hole 33 is greater than described second through hole 21, energy also in being embedded as thicker O-ring seal 4 in groove 34, to increase the area of contact of O-ring seal 4 and described connecting rod, and then increases sealing and the abrasion resistance of O-ring seal 4.
Further, the internal diameter arranging O-ring seal 4 is less than described connecting rod, makes O-ring seal 4 be crushed between groove 34 and connecting rod, also can increase the area of contact of O-ring seal 4 and described connecting rod, and then increases sealing and the abrasion resistance of O-ring seal 4.
Further, described O-ring seal 4 is set for solid cushion rubber, increases the abrasion resistance of O-ring seal 4 with a step again.
In the embodiment of the present application, the bottom land center line of described groove 34 is circular, and described bottom land center line is positioned at in the plane of the central axis of described third through-hole 33.
Specifically, bottom land center line is set and is positioned at in the plane of the central axis of described third through-hole, the oil be tightly connected on bar with the O-ring seal 4 that girth is the shortest can be realized.
Further, described O-ring seal 4 is coated with oiling agent, to increase the abrasion resistance of O-ring seal 4, extends the working life of O-ring seal 4.
In specific implementation process, after gland 3 inserts the first through hole 11, the end face of first end 31 and the end face of tubular casing 2 fit tightly, the Placement of described gland 3 and described box body 1, can be arrange worm structure at gland 3 outer wall and the first through hole 11 inwall, by worm structure screwed connection gland 3 and box body 1, also can be arrange bayonet arrangement on gland 3 and box body 1, connect gland 3 and box body 1 by bayonet arrangement, this is not restricted.
Specifically, gland 3 is set and is connected by worm structure with box body 1, the connection of gland 3 and box body 1 can be convenient to and be separated, facilitating the replacing of O-ring seal 4.
In the embodiment of the present application, the end face of described second end 32 of described gland 3 is provided with opening slot 35, to make when spanner inserts described opening slot 35, described gland 3 can be rotated with by the precession of described gland 3 or screw out described first through hole 11.
In specific implementation process, described opening slot 35 can be one or more, and this is not restricted, in order to save the power consumed when the spanner inserting described opening slot 35 rotates, can arrange described opening slot 35 and being symmetricly set on the end face of described second end 32.
In the embodiment of the present application, described box body 1 offers attachment hole 12,
Described box body 1 is by being bolted on described equipment through described attachment hole 12.
Certainly, in specific implementation process, also can be that described box body 1 is provided with projective structure, described equipment be also provided with the notch corresponding with described projective structure, the projective structure card of described box body 1 and be fixed in described notch, with realize by fixing for box body 1 on said device.
Next, the use of described sealing case is introduced.
Please refer to Fig. 1 and Fig. 2, when needing to fill described sealing case, first, the first through hole 11 of box body 1 is set on connecting rod 201, and by the bolt through attachment hole 21, sealing case 202 is fixed on equipment 203;
Next, tubular casing 2 is loaded the first through hole 11 of box body 1 with special tool;
Again by O-ring seal 4 surface smear butter, insert in the groove 34 of gland 3, and by the spanner insertion opening groove 35 of coupling, gland 3 screws in the first through hole 11 of box body 1 by rotary spanner again, screw gland 3 and tubular casing 2, the end face of the first end 31 of gland 3 and the end face of tubular casing 2 are fitted tightly, completes sealing case and install.
When connecting rod 201 back and forth movement, second through-hole wall and the connecting rod 201 of tubular casing 2 form mechanical seal, the lubricant oil on connecting rod 201 is stoped to flow in the third through-hole 33 of gland 3, and O-ring seal 4 and connecting rod 201 are fitted and are formed secondary seal, the lubricant oil on connecting rod 201 is stoped to flow to described second end, by double seal means, effectively prevent leakage of oil.
When cushion rubber changed by needs, by the spanner insertion opening groove 35 of coupling, then rotary spanner, thus drive gland 3 to screw out the first through hole 11, older cushion rubber can be taken out easily with pliers or hand, change new aprons.
Technological scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
1, the sealing case that provides of the embodiment of the present application, when connecting rod is arranged in sealing case, because the aperture of the second through hole of tubular casing is close to the external diameter of connecting rod, therefore the second through-hole wall and connecting rod form mechanical seal, then fitted by cushion rubber and connecting rod and form secondary seal, by double seal means, effectively prevent leakage of oil, and when cushion rubber service time is long, cushion rubber can be changed easily, reduce maintenance cost.
2, the sealing case that provides of the embodiment of the present application, the the second through-hole wall face arranging tubular casing is smooth, the gap of the second through hole and connecting rod is more than or equal to 0.07 millimeter, be less than or equal to 0.1 millimeter, to make on the basis realizing mechanical seal, in the gap of the second through-hole wall and connecting rod, form lubricant film, play and alleviate wearing and tearing and cooling effect, extend the working life of sealing case.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a sealing case, the oil on the connecting rod of water-tight equipment, is characterized in that, described sealing case comprises:
Box body, described box body offers the first through hole;
Tubular casing, described tubular casing offers the second through hole, and described tubular casing is arranged in described first through hole, and the outer surface of described tubular casing coordinates with the internal wall transitions of described first through hole;
Gland, described gland comprises first end, the second end and third through-hole, the through described first end of described third through-hole and described second end; Described first end is fixing to be inserted in described first through hole, and the end face of described first end and the end face of described tubular casing are fitted; The inwall of described third through-hole offers a circle groove, in described groove, be embedded with a circle O-ring seal;
Wherein, the center line of the center line of described first through hole, the center line of described second through hole and described third through-hole overlaps, when described connecting rod is arranged in described first through hole, described second through hole and described third through-hole, the gap of described second through-hole wall and described connecting rod is less than preset difference value, and described O-ring seal and described connecting rod are fitted, flow to described second end to stop the oil on described connecting rod.
2. sealing case as claimed in claim 1, it is characterized in that, described gap is more than or equal to 0.07 millimeter, and described gap is less than or equal to 0.1 millimeter.
3. sealing case as claimed in claim 2, is characterized in that, the smoothness of described second through-hole wall is greater than first and presets smoothness.
4. sealing case as claimed in claim 1, it is characterized in that, described first through hole comprises: first paragraph and the second segment be connected with described first paragraph; Wherein, the aperture of described first paragraph is less than the aperture of described second segment, and is less than the external diameter of described tubular casing, is fixed on described second segment to make described tubular casing wear.
5. sealing case as claimed in claim 1, it is characterized in that, the radius of described third through-hole is greater than described second through hole, and when described O-ring seal is embedded in described groove, the internal diameter of described O-ring seal is less than described connecting rod, to increase the area of contact of described O-ring seal and described connecting rod.
6. sealing case as claimed in claim 5, is characterized in that, the bottom land center line of described groove is circular, and described bottom land center line is positioned at in the plane of the central axis of described third through-hole.
7. sealing case as claimed in claim 6, is characterized in that, described O-ring seal is coated with oiling agent.
8. sealing case as claimed in claim 1, it is characterized in that, described gland is connected by worm structure with described box body.
9. sealing case as claimed in claim 8, is characterized in that, the end face of described second end of described gland is provided with opening slot, to make when spanner inserts described opening slot, can rotate described gland with by described gland precession or screw out described first through hole.
10. the sealing case as described in as arbitrary in claim 1-9, is characterized in that, described box body offers attachment hole, and described box body is by being bolted on described equipment through described attachment hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006249.8A CN104696209B (en) | 2015-01-06 | 2015-01-06 | A kind of seal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006249.8A CN104696209B (en) | 2015-01-06 | 2015-01-06 | A kind of seal box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104696209A true CN104696209A (en) | 2015-06-10 |
| CN104696209B CN104696209B (en) | 2017-08-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510006249.8A Active CN104696209B (en) | 2015-01-06 | 2015-01-06 | A kind of seal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696209B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120058000A1 (en) * | 2010-09-06 | 2012-03-08 | National Oilwell Varco, L.P. | Self-Aligning Rod Seal |
| CN202418571U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Seal device of hydraulic cylinder |
| CN203051768U (en) * | 2013-01-22 | 2013-07-10 | 无锡联营电力设备有限公司 | Front shaft sealing device of denitration air door |
| CN203272106U (en) * | 2013-05-13 | 2013-11-06 | 高英 | Novel oil leakage preventive booster pump |
| CN203348065U (en) * | 2013-06-20 | 2013-12-18 | 合肥华升泵阀有限责任公司 | Combined sealing device for plunger pump |
-
2015
- 2015-01-06 CN CN201510006249.8A patent/CN104696209B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120058000A1 (en) * | 2010-09-06 | 2012-03-08 | National Oilwell Varco, L.P. | Self-Aligning Rod Seal |
| CN202418571U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Seal device of hydraulic cylinder |
| CN203051768U (en) * | 2013-01-22 | 2013-07-10 | 无锡联营电力设备有限公司 | Front shaft sealing device of denitration air door |
| CN203272106U (en) * | 2013-05-13 | 2013-11-06 | 高英 | Novel oil leakage preventive booster pump |
| CN203348065U (en) * | 2013-06-20 | 2013-12-18 | 合肥华升泵阀有限责任公司 | Combined sealing device for plunger pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104696209B (en) | 2017-08-04 |
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