CN201225281Y - Sand-proof three-screw-rod pump - Google Patents
Sand-proof three-screw-rod pump Download PDFInfo
- Publication number
- CN201225281Y CN201225281Y CNU2008200215840U CN200820021584U CN201225281Y CN 201225281 Y CN201225281 Y CN 201225281Y CN U2008200215840 U CNU2008200215840 U CN U2008200215840U CN 200820021584 U CN200820021584 U CN 200820021584U CN 201225281 Y CN201225281 Y CN 201225281Y
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- CN
- China
- Prior art keywords
- screw rod
- bearing
- pump
- screw
- lining
- 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
- 230000002265 prevention Effects 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a petroleum industry storage and transportation device, in particular to a sand prevention triple screw pump which mainly comprises a pump body, an end cover, a drive bolt, a driven bolt, a bearing box, a mechanical seal, a bearing, a sleeve, a nut and a seal box, wherein the sleeve is arranged in the pump body, the drive bolt and the driven bolt which are meshed mutually are arranged in the sleeve, the end cover and the pump body as well as the sleeve are movably connected, the mechanical seal and the seal box are arranged on the drive bolt, the bearing box and the bearing are arranged on the drive bolt and are locked by the nut and the drive bolt. The utility model has the advantages that the friction loss is less, the higher volume efficiency is ensured by the tight matching, and the service life of the bearing is greatly prolonged.
Description
One, technical field:
The utility model relates to a kind of petroleum industry gathering and transporting device, particularly relates to a kind of sand prevention three screw pump.
Two, background technique:
Screw pump is to rely on one or several screw rod to be meshing with each other, and the spatial volume of formation constantly changes carries liquid.Number difference according to intermeshing screw rod, can be divided into helical rotor pump, two screw pump, three screw pump or the like, its working principle is: liquid is inhaled into and enters the confined space that screw thread and pump case surround during screw pump work, again during the rotation of screw rod, the screw pump sealed volume improves screw pump pressure under the extruding of thread, and move vertically, because the rotation of screw rod constant speed, so flow is even.
Because each screw rod is meshing with each other, and screw rod and lining inwall closely cooperate, be divided into one or more confined space at Pump Suction Nozzle and exhaust port, along with moving and engagement of screw rod, confined space constantly forms in the suction side of pump, with the liquid seal of suction chamber wherein, and pass continuously to exhaust end, the liquid in the sealing is constantly discharged from suction chamber.Be characterized in: lose for a short time, economic performance is good, and pressure is high and evenly, flow is even, can with prime mover direct connection.But in thick oil collection and transportation, existing three screw pump is carried requirement for satisfying, and needs to increase pump housing external diameter, increases the helical pitch number, and screw and bushing is longer, in addition, causes frictional loss to increase, and bearing life shortens.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of sand prevention three screw pump that increases the service life is provided.
Its technological scheme is: mainly be made up of the pump housing, end cap, active screw rod, driven screw rod, bearing housing, mechanical seal, bearing, lining, nut, sealed case, in the pump housing, be provided with lining, intermeshing active screw rod and driven screw rod are housed in lining, end cap, the pump housing and lining link joint, initiatively on the screw rod mechanical seal and sealed case are housed, and bearing housing and bearing are housed, and by nut and initiatively screw rod locking.
Wherein, an end of described active screw rod radially is provided with boss, and an end of driven screw rod is provided with balance set, has a plurality of apertures on balance set.
Be provided with steel pipe in the pump housing, the one end communicates with low-pressure cavity, and the other end is connected in Seal cage, and Seal cage is provided with auxiliary hole and communicates with low-pressure cavity.
The beneficial effects of the utility model are: frictional loss is less, and it closely cooperates and has guaranteed very high volumetric efficiency, has increased the working life of bearing greatly.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is plan views of the present utility model.
Five, embodiment:
1-2 in conjunction with the accompanying drawings, the utility model will be further described: mainly by the pump housing 1, end cap 2, initiatively screw rod 3, driven screw rod 4, bearing housing 5, mechanical seal 6, bearing 7, lining 8, nut 9, sealed case 10, balance set 11, locating stud 12, bolt 13, steel pipe 14, set screw 15, low-pressure cavity 16 and Seal cage 17 are formed.In the pump housing 1, be provided with lining 8, intermeshing active screw rod and driven screw rod are housed in lining, and end cap 2, the pump housing 1 and lining 8 link joints initiatively are equipped with mechanical seal 6 and sealed case 10 on the screw rod, and bearing housing 5 and bearing 7 are housed, and by nut 9 and initiatively screw rod locking.Initiatively an end of screw rod radially is provided with boss, and an end of driven screw rod is provided with balance set 11, has a plurality of apertures on balance set.Be provided with steel pipe 14 in the pump housing, the one end communicates with low-pressure cavity 16, and the other end is connected in Seal cage 17, and Seal cage is provided with auxiliary hole and communicates with low-pressure cavity.
Working principle is: initiatively screw rod 3 synchronizedly runs by being transferred two driven screw rods 4 of the formed oil film drive of medium, intermeshing screw and bushing 8 forms the little airtight chamber of some mutual isolation, be transferred medium and in these little airtight chamber, make uniform motion in a straight line to hyperbaric chamber by low-pressure cavity, being transferred medium is so just flowed to pump discharge continuously by pump inlet, driven screw rod communicates with low-pressure cavity by the balance set 11 that has aperture, reaches the purpose of hydro-cushion.
Claims (3)
1, a kind of sand prevention three screw pump, mainly form by the pump housing, end cap, active screw rod, driven screw rod, bearing housing, mechanical seal, bearing, lining, nut, sealed case, in the pump housing, be provided with lining, intermeshing active screw rod and driven screw rod are housed in lining, it is characterized in that: end cap, the pump housing and lining link joint, initiatively on the screw rod mechanical seal and sealed case are housed, and bearing housing and bearing are housed, and by nut and initiatively screw rod locking.
2, sand prevention three screw pump according to claim 1 is characterized in that: an end of described active screw rod radially is provided with boss, and an end of driven screw rod is provided with balance set, has a plurality of apertures on balance set.
3, sand prevention three screw pump according to claim 1 is characterized in that: be provided with steel pipe in the pump housing, the one end communicates with low-pressure cavity, and the other end is connected in Seal cage, and Seal cage is provided with auxiliary hole and communicates with low-pressure cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200215840U CN201225281Y (en) | 2008-04-30 | 2008-04-30 | Sand-proof three-screw-rod pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200215840U CN201225281Y (en) | 2008-04-30 | 2008-04-30 | Sand-proof three-screw-rod pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225281Y true CN201225281Y (en) | 2009-04-22 |
Family
ID=40598167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200215840U Expired - Fee Related CN201225281Y (en) | 2008-04-30 | 2008-04-30 | Sand-proof three-screw-rod pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225281Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712553A (en) * | 2015-02-12 | 2015-06-17 | 溧阳市超强链条制造有限公司 | Three-screw pump |
-
2008
- 2008-04-30 CN CNU2008200215840U patent/CN201225281Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712553A (en) * | 2015-02-12 | 2015-06-17 | 溧阳市超强链条制造有限公司 | Three-screw pump |
| CN104712553B (en) * | 2015-02-12 | 2017-04-05 | 溧阳市超强链条制造有限公司 | A three-screw pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20100430 |