CN201588777U - Light oil conveying high-pressure three-screw pump - Google Patents
Light oil conveying high-pressure three-screw pump Download PDFInfo
- Publication number
- CN201588777U CN201588777U CN 200920251098 CN200920251098U CN201588777U CN 201588777 U CN201588777 U CN 201588777U CN 200920251098 CN200920251098 CN 200920251098 CN 200920251098 U CN200920251098 U CN 200920251098U CN 201588777 U CN201588777 U CN 201588777U
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- screw
- pump
- light oil
- screw rod
- linings
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- Expired - Fee Related
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Abstract
The utility model relates to a light oil conveying high-pressure three-screw pump, which comprises a pump body, linings, a driving screw, a driven screw and a seal. The light oil conveying high-pressure three-screw pump is characterized in that two split linings are mounted inside the pump body, the lengthened driving screw and the lengthened driven screw are arranged inside the linings, a built-in front cover is arranged inside the pump body and connected with the linings through fastening parts, a bearing box and a bearing are disposed on the outer side of the seal, and one side outside the pump body is connected with an oil return pipe. The light oil conveying high-pressure three-screw pump has the advantages that abrasion between the linings and the driving screw and abrasion between the driving screw and the front cover are reduced, deformation of an inner hole of the built-in front cover is reduced, a fit clearance between the inner hole of the front cover and a shaft of the driving screw is guaranteed so as to bring convenience for forming an oil film well without heavy leakage, and the linings which are two split structures not only bring convenience for processing but guarantee processing precision. In addition, service life of the light oil conveying high-pressure three-screw pump is greatly prolonged, and then large quantities of capitals of users can be saved.
Description
Technical field
The utility model belongs to industrial pump and makes the field, particularly relates to a kind of light oil high-pressure delivery three screw pump.
Background technique
Three screw pump is as the power source of liquid, and extensively installation is matched in all kinds of lubrication statioies, hydraulic system and the various technology cooling system, and it is multi-field to be applied to boats and ships, metallurgy, iron and steel, petrochemical industry, electric power and machining etc.Use for many years facts have proved that three screw pump all has significant advance than existing other positive displacement pump in all many-sides such as economic benefit, delivery quality, running life and maintainings.Three screw pump of the prior art generally is to be used to carry lubricant oil, because the lubricity of lubricant oil is good, can well form oil film between screw rod and lining, has guaranteed the working life of pump.Present many power plant need light a fire with diesel oil, pressure height, medium poor lubricity, and very quick-wearing heating between screw rod and lining, screw rod and the mobile jib, pump breaks down very soon.In addition, because lining is an overall structure, difficulty of processing is big, and installing/dismounting trouble, machining accuracy are difficult to guarantee.
Summary of the invention
The utility model provides a kind of compact structure for solving the technical problem that exists in the known technology, be convenient to process and installing/dismounting can prolong the pump conveying light oil high pressure three screw pump in working life.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: carry light oil high pressure three screw pump, comprise the pump housing, lining, initiatively screw rod, driven screw rod and sealing, it is characterized in that: the lining that two splits are installed in the described pump housing, be provided with the active screw rod and the driven screw rod of lengthening helix length in the described lining, built-in protecgulum is housed in the pump housing, built-in protecgulum is connected with lining by fastening piece, be provided with bearing housing and bearing in the sealing outside, the outer side of the pump housing is connected with return tube.
The utility model can also adopt following technological scheme:
Described two branch body bushings are located by locating stud, and bolt connects.
Two helical pitches of spiral section lengthening of described active screw rod and driven screw rod.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, reduced between lining and the active screw rod, the initiatively wearing and tearing between screw rod and the protecgulum, built-in protecgulum has reduced the distortion in hole in the protecgulum, has guaranteed the matching gap between protecgulum endoporus and driving screw shaft so that well form oil film but be unlikely to have too big leakage; Lining is two fens body structures, both has been convenient to its processing, can guarantee the machining accuracy of lining again.This conveying light oil high pressure three screw pump has increased substantially the working life of pump, and can be the user and save substantial contribution.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the plan view of Fig. 1.
Among the figure: 1, the pump housing; 2, lining A; 3, lining B; 4, built-in protecgulum; 5, bearing housing; 6, active screw rod; 7, driven screw rod; 8, connecting pin; 9, bearing; 10, return tube; 11, screw; 12, sealing; 13, fixing pin; 14, lubricating cup.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 and Fig. 2, carry light oil high pressure three screw pump, comprise the pump housing 1, lining, initiatively screw rod 6, driven screw rod 7 and be installed in sealing 12 on the pump housing main shaft.The lining A2 and the B3 of two splits are installed in the described pump housing 1, and lining A2 and lining B3 are located by connecting by screw 11 and connecting pin 8.Be provided with the active screw rod 6 and the driven screw rod 7 of lengthening helix length in the described lining, two helical pitches of spiral section lengthening of described active screw rod 6 and driven screw rod 7.Built-in protecgulum 4 is installed in the pump housing, and built-in protecgulum is connected and fixed by fastening piece and lining, is provided with bearing housing 5 and the bearing 9 that is installed in the bearing housing in sealing 12 outsides, and bearing 9 places the outside of sealing 12, and injects the grease lubrication bearings by lubricating cup 14.The outer side of the pump housing is connected with return tube 10 and is communicated with pump housing Seal cage, and the oil in the Seal cage is got back to suction chamber by return tube 10.This compact structure, easy installation and removal has reduced the frictional force between lining and the screw rod after extend master and slave bar and the liner sleeve length, and in the working life of having improved pump, the external bearing that guaranteed of bearing can obtain the well lubricated heat of also in time taking away generation.
Claims (3)
1. carry light oil high pressure three screw pump for one kind, comprise the pump housing, lining, initiatively screw rod, driven screw rod and sealing, it is characterized in that: the lining that two splits are installed in the described pump housing, be provided with the active screw rod and the driven screw rod of lengthening helix length in the described lining, built-in protecgulum is housed in the pump housing, built-in protecgulum is connected with lining by fastening piece, is provided with bearing housing and bearing in the sealing outside, and the outer side of the pump housing is connected with return tube.
2. conveying light oil high pressure three screw pump according to claim 1 is characterized in that: described two branch body bushings are located by locating stud, and bolt connects.
3. conveying light oil high pressure three screw pump according to claim 1 is characterized in that: two helical pitches of spiral section lengthening of described active screw rod and driven screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920251098 CN201588777U (en) | 2009-11-30 | 2009-11-30 | Light oil conveying high-pressure three-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920251098 CN201588777U (en) | 2009-11-30 | 2009-11-30 | Light oil conveying high-pressure three-screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588777U true CN201588777U (en) | 2010-09-22 |
Family
ID=42748555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920251098 Expired - Fee Related CN201588777U (en) | 2009-11-30 | 2009-11-30 | Light oil conveying high-pressure three-screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588777U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536793A (en) * | 2012-02-17 | 2012-07-04 | 河南大学 | Internally tangent barrel-shaped four-rotor displacement pump |
| CN103547807A (en) * | 2011-05-20 | 2014-01-29 | 吉格姆凡赫克比希尔公司 | Pump, pump system and method for pumping a medium |
| CN103644115A (en) * | 2013-08-29 | 2014-03-19 | 钟文填 | Biarc screw pump |
| CN103711690A (en) * | 2013-12-19 | 2014-04-09 | 黄山工业泵制造有限公司 | High-property high-pressure three-screw pump |
| CN108791467A (en) * | 2018-07-04 | 2018-11-13 | 湖北三环汽车方向机有限公司 | A kind of New Cycle ball-type power steering gear screw axis-torsion bar assembly |
-
2009
- 2009-11-30 CN CN 200920251098 patent/CN201588777U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547807A (en) * | 2011-05-20 | 2014-01-29 | 吉格姆凡赫克比希尔公司 | Pump, pump system and method for pumping a medium |
| CN102536793A (en) * | 2012-02-17 | 2012-07-04 | 河南大学 | Internally tangent barrel-shaped four-rotor displacement pump |
| CN102536793B (en) * | 2012-02-17 | 2015-01-14 | 河南大学 | Internally tangent barrel-shaped four-rotor displacement pump |
| CN103644115A (en) * | 2013-08-29 | 2014-03-19 | 钟文填 | Biarc screw pump |
| CN103711690A (en) * | 2013-12-19 | 2014-04-09 | 黄山工业泵制造有限公司 | High-property high-pressure three-screw pump |
| CN103711690B (en) * | 2013-12-19 | 2016-07-06 | 黄山工业泵制造有限公司 | high pressure three-screw pump |
| CN108791467A (en) * | 2018-07-04 | 2018-11-13 | 湖北三环汽车方向机有限公司 | A kind of New Cycle ball-type power steering gear screw axis-torsion bar assembly |
| CN108791467B (en) * | 2018-07-04 | 2024-01-30 | 湖北三环汽车方向机有限公司 | Screw shaft-torsion bar assembly of recirculating ball type power steering gear |
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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: 20100922 Termination date: 20111130 |