CN204212730U - Screw pump short fish head fishing spear - Google Patents
Screw pump short fish head fishing spear Download PDFInfo
- Publication number
- CN204212730U CN204212730U CN201420630508.5U CN201420630508U CN204212730U CN 204212730 U CN204212730 U CN 204212730U CN 201420630508 U CN201420630508 U CN 201420630508U CN 204212730 U CN204212730 U CN 204212730U
- Authority
- CN
- China
- Prior art keywords
- cone shaft
- screw pump
- fish head
- fishing spear
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of screw pump short fish head fishing spear.Mainly solve the problem of not easily salvaging after the existing screw pump pump housing comes off.It is characterized in that: described cone shaft (2) lower external face is provided with two relative inclined-planes, and top, inclined-plane tilts to cone shaft (2) center, two described inclined-planes are equipped with the track (4) of protrusion, track (4) are connected with circular slip insert (5); The bottom surface that described cone shaft (2) is upper and above-mentioned inclined-plane is perpendicular has side direction hydrophthalmia (3), and place of cone shaft (2) bottom centre is provided with central ports (8).This screw pump short fish head fishing spear can realize the screw pump pump housing and salvage, and avoids overhaul, saves duration and expense.
Description
Technical field
The utility model relates to oilfield, specifically a kind of screw pump short fish head fishing spear.
Background technology
Screw pump is one of oil well pump of generally using of Daqing oil field, owing to easily coming off between screw pump extension tube bottom and the top connection of the screw pump pump housing, screw pump top connection internal diameter is Φ 102mm, external diameter is 114mm, the possibility of dragging for outward is minimum, and below screw buckle, stator rubber body and dragging in making also cannot realize.And current all shaping fishing tools are all without applicable size, the troop of conventional inspection pump is caused to salvage, can only overhaul, waste duration and expense.
Summary of the invention
In order to overcome the deficiency of not easily salvaging after the existing screw pump pump housing comes off, the utility model provides a kind of screw pump short fish head fishing spear, and this screw pump short fish head fishing spear can realize the screw pump pump housing and salvage, and avoids overhaul, saves duration and expense.
The technical solution of the utility model is: a kind of screw pump short fish head fishing spear, comprise top connection, top connection bottom is connected with cone shaft, described cone shaft lower external face is provided with two relative inclined-planes, and top, inclined-plane tilts to cone shaft center, two described inclined-planes are equipped with the track of protrusion, track are connected with circular slip insert; Bottom surface perpendicular with above-mentioned inclined-plane in described cone shaft has side direction hydrophthalmia, and place of cone shaft bottom centre is provided with central ports.
Described cone shaft lower surface is fixed with key by screw, and the outer of key and circular slip insert end contact.
The utility model has following beneficial effect: owing to taking such scheme, the inclined-plane of cone shaft bottom is provided with circular slip insert, circular slip insert can move down under the hydraulic action of side direction hydrophthalmia, thus radial direction outwards movement along inclined-plane, match with screw pump top connection screw thread, produce radial support power, thus junk is pulled out.This fishing spear structure is simple, easy construction, solves the problem that the screw pump pump housing is salvaged, avoids overhaul, save duration and expense.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is exploded view of the present utility model.
1-top connection in figure, 2-cone shaft, 3-side direction hydrophthalmia, 4-track, the circular slip insert of 5-, 6-key, 7-screw, 8-central ports.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in Fig. 1, Fig. 2, a kind of screw pump short fish head fishing spear, comprise top connection 1, top connection 1 bottom is connected with cone shaft 2, described cone shaft 2 inner hollow, lower external face is provided with two relative inclined-planes, and namely two inclined-planes are radially uniform, and top, inclined-plane tilts to cone shaft 2 center.Two described inclined-planes are equipped with the track 4 of protrusion, track 4 is axis direction, and track 4 is connected with circular slip insert 5, circular slip insert 5 has the draw-in groove matched with track 4, and circular slip insert 5 can be slided along track 4.Bottom surface perpendicular with above-mentioned inclined-plane in described cone shaft 2 has side direction hydrophthalmia 3, namely two side direction hydrophthalmias 3 all aim at circular slip insert 5 upper surface, and place of cone shaft 2 bottom centre is provided with central ports 8, above-mentioned side direction hydrophthalmia 3 and central ports 8 all communicate with cone shaft 2 inside.Described cone shaft 2 lower surface is fixed with key 6 by screw 7, and the outer of key 6 and circular slip insert 5 end contact, namely when circular slip insert 5 is along track 4 slippage to beveled top end, after key 6 being fixed on cone shaft 2 end face by screw 7, just circular slip insert 5 can be fixed, prevent it from coming off.
When this fishing spear is gone into the well, circular slip insert 5 moves, and external diameter diminishes, and makes it go into the well.After this fishing spear enters top of fish inner chamber, circular slip insert 5 moves down under the hydraulic action of gravity and side direction hydrophthalmia 3, coincide with screw pump top connection screw thread and produces radial frictional force; Then upper lifting pipe post, cone shaft 2 is up, and circular slip insert 5 external diameter under the effect on inclined-plane increases, and screw thread and the screw pump upper portion screw thread on its surface match, and produce radial support power, thus are pulled out by junk.
Claims (2)
1. a screw pump short fish head fishing spear, comprise top connection (1), top connection (1) bottom is connected with cone shaft (2), it is characterized in that: described cone shaft (2) lower external face is provided with two relative inclined-planes, and top, inclined-plane tilts to cone shaft (2) center, two described inclined-planes are equipped with the track (4) of protrusion, track (4) are connected with circular slip insert (5); The bottom surface that described cone shaft (2) is upper and above-mentioned inclined-plane is perpendicular has side direction hydrophthalmia (3), and place of cone shaft (2) bottom centre is provided with central ports (8).
2. screw pump according to claim 1 short fish head fishing spear, is characterized in that: described cone shaft (2) lower surface is fixed with key (6) by screw (7), and the outer of key (6) and circular slip insert (5) end contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630508.5U CN204212730U (en) | 2014-10-28 | 2014-10-28 | Screw pump short fish head fishing spear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630508.5U CN204212730U (en) | 2014-10-28 | 2014-10-28 | Screw pump short fish head fishing spear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204212730U true CN204212730U (en) | 2015-03-18 |
Family
ID=52981411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420630508.5U Expired - Fee Related CN204212730U (en) | 2014-10-28 | 2014-10-28 | Screw pump short fish head fishing spear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204212730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116752923A (en) * | 2023-08-16 | 2023-09-15 | 牡丹江市林海石油打捞工具有限公司 | Screw pump hydraulic overshot |
-
2014
- 2014-10-28 CN CN201420630508.5U patent/CN204212730U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116752923A (en) * | 2023-08-16 | 2023-09-15 | 牡丹江市林海石油打捞工具有限公司 | Screw pump hydraulic overshot |
| CN116752923B (en) * | 2023-08-16 | 2023-11-07 | 牡丹江市林海石油打捞工具有限公司 | Screw pump hydraulic overshot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20211028 |